CN106813117B

CN106813117B - LED straight lamp

Info

Publication number: CN106813117B
Application number: CN201610898129.8A
Authority: CN
Inventors: 江涛
Original assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Current assignee: Jiaxing Super Lighting Electric Appliance Co Ltd
Priority date: 2015-11-27
Filing date: 2016-10-14
Publication date: 2020-09-04
Anticipated expiration: 2036-10-14
Also published as: CN207849028U; CN106813117A; CN206409923U; CN207584418U

Abstract

An LED straight lamp, characterized in that, LED straight lamp includes: a lamp tube; two lamp caps respectively arranged at two opposite ends of the lamp tube; the power supply is arranged in the one or two lamp holders; the LED lamp panel is arranged in the lamp tube, a plurality of LED light sources are arranged on the LED lamp panel, and the LED light sources are electrically connected with the power supply through the LED lamp panel; wherein, the lamp holder includes: side walls coaxial with the lamps and connected with each other; the end wall is perpendicular to the axial direction of the side wall and is connected with one end, far away from the lamp tube, of the side wall; the hole penetrates through the end wall and is communicated with the inner space of the lamp holder and the outside; an angle is formed between the axial direction of the hole and the axial direction of the side wall, and the angle is an acute angle.

Description

LED straight lamp

Technical Field

The invention relates to the field of lighting appliances, in particular to an LED straight lamp and a component thereof.

Background

LED lighting technology is rapidly advancing to replace traditional incandescent and fluorescent lamps. Compared with a fluorescent lamp filled with inert gas and mercury, the LED straight lamp does not need to be filled with mercury. Therefore, LED straight tube lamps have become a highly desirable lighting option unintentionally and unexpectedly in various lighting systems for homes or workplaces dominated by lighting options such as traditional fluorescent bulbs and LED tubes. Advantages of LED straight lamps include improved durability and longevity and lower power consumption. Therefore, a LED straight tube lamp would be a cost effective lighting option, taking all factors into account.

Please refer to the chinese patent application with publication number CN 104633497a, which discloses a basic structure of a direct-insertion LED straight tube lamp, wherein the LED straight tube lamp includes an LED tube and an LED tube plug, the LED tube plug includes a power board and a plug housing, a light bar assembly is disposed in the LED tube, and the light bar assembly is connected to the power board. Please refer to chinese patent application with publication number CN 203489210U, which discloses a lamp holder with adjustable power and a LED straight lamp, wherein the lamp holder of the LED straight lamp includes a lamp holder body and a power adjusting rotating ring. Please refer to US patent application with publication number US2012146503, which discloses an in-line LED straight tube lamp comprising a tubular member, an LED disposed in the tubular member, and a transparent liquid for dissipating heat. Please refer to US patent application publication No. US20140071667, which discloses a straight tube lamp, which includes a cylindrical housing, end caps disposed at two ends of the cylindrical housing, an LED substrate disposed in the cylindrical housing, and an LED disposed on the LED substrate.

Therefore, the basic structure of the conventional LED straight lamp comprises a lamp tube, lamp caps at two ends of the lamp tube, LEDs arranged on a substrate and a substrate in the lamp tube, and a power supply arranged in the lamp caps, wherein the LED lamp tube and the lamp caps form a closed space. The conversion efficiency of the conventional LED from electrical energy to optical energy is to be improved, so that besides the conversion into optical energy, most of the electrical energy is converted into thermal energy to be released, especially for the high power LED chip, which generates more thermal energy. Therefore, a heat sink or other heat conduction and/or heat dissipation structures are required to be disposed around the substrate to increase the heat conduction from the LED chip and the substrate to the outside of the lamp tube, thereby avoiding the low light emitting efficiency of the LED chip caused by overheating. In addition, the holes on the lamp tube which do not release pressure can reduce the reliability of the LED straight lamp, and meanwhile, the LED straight lamp is not easy to assemble and disassemble.

The LED straight tube lamp is provided with a hole for heat dissipation on a lamp cap, the hole is parallel to the axial direction of the LED straight tube lamp, and the inside and the outside of the lamp are communicated through the hole. Such holes parallel to the straight LED tube lamp have the following disadvantages: 1. the internal path of the external air of the straight tube lamp entering through the hole is short, and dust easily enters the straight tube lamp directly to influence the performance of a power supply; 2. the holes are parallel to the axial direction of the straight tube lamp, dust is not blocked in the process of entering the straight tube lamp, if the holes are inclined to the axial direction of the straight tube lamp, the wall surfaces of the holes can more easily block dust in the air, more dust is deposited on the wall surfaces of the holes, and the quantity of the dust reaching a power supply is reduced; 3. considering the complete factor, set up the hole on the straight tube lamp, if the hole is on a parallel with the axial of LED straight tube lamp, then the probe is easier to insert from the hole, leave the potential safety hazard, and further, when the probe inserts in the straight tube lamp from the hole, probably touch the power to probably damage the power, if under the situation of using, then have the risk of electrocuteeing, supposing to set up the hole to be the axial of slope straight tube lamp, then during the design, stagger the extending direction and the power of hole more easily, thereby avoid or reduce the possibility that above-mentioned condition takes place.

Disclosure of Invention

The existing LED straight lamp has the following problems to be solved. When the LED straight tube lamp is in operation, the electronic components of the power supply inside the lamp cap can continuously generate heat energy, and the generated heat energy cannot be dissipated outside the lamp cap along with air convection, but can be accumulated inside the lamp cap, which reduces the service life and reliability of the product. And, according to the ideal gas equation:

PV＝nRT

where P is the pressure, V is the volume of the gas, n is the amount of the gas, R is the ideal gas constant, and T is the absolute temperature. If the volume and amount of the gas are fixed, the temperature and the pressure are in a direct proportion relationship, that is, the higher the temperature is, the higher the pressure is; the lower the temperature, the lower the pressure. In the case of a closed space or a nearly closed space inside the lamp cap (for example, the lamp cap and the lamp tube are connected by an adhesive method so that there is no gap or the gap is very small at the connection position between the lamp cap and the lamp tube), the volume and the amount of the gas inside the lamp cap are fixed values or nearly fixed values, and at this time, the change of the temperature may cause a change of the pressure, especially, the sudden change of the temperature may cause a sharp increase or decrease of the pressure inside the lamp cap, which may increase the chance of breaking the electrical connection (for example, the connection position between the soft board and the hard board is loosened). In addition, the pressure inside the lamp cap is increased due to the long-term high temperature, so that the electronic components need to bear the high temperature and the high pressure for a long time, and the service life of the electronic components is reduced. The high temperature or high pressure in the lamp cap not only influences the reliability of the LED straight lamp, but also improves the risk of spontaneous combustion of electronic elements, and fire accidents can be caused by carelessness.

In the assembly process of the LED straight tube lamp, because the pressure inside the lamp tube and the lamp cap is increased along with the assembly process of the lamp tube and the lamp cap, resistance exists when the lamp cap is assembled on the lamp tube, and then negative effects are generated on the assembly efficiency. In addition, during the detachment process of the LED straight lamp, because of the negative pressure inside the lamp tube and the lamp head (which is caused when the temperature inside the lamp tube and the lamp head decreases), there is resistance when the lamp head is detached from the lamp tube.

In view of the above, the present invention and embodiments thereof are set forth below. The invention provides a novel LED straight lamp to solve the problems.

In one embodiment, the LED straight lamp is characterized by comprising:

a lamp tube;

two lamp caps respectively arranged at two opposite ends of the lamp tube;

the power supply is arranged in the one or two lamp holders; and

the LED lamp panel is arranged in the lamp tube, a plurality of LED light sources are arranged on the LED lamp panel, and the LED light sources are electrically connected with the power supply through the LED lamp panel;

wherein, the lamp holder includes:

side walls coaxial with the lamps and connected with each other;

the end wall is perpendicular to the axial direction of the side wall and is connected with one end, far away from the lamp tube, of the side wall; and

the hole penetrates through the end wall and is communicated with the inner space of the lamp holder and the outside; an angle is formed between the axial direction of the hole and the axial direction of the side wall, and the angle is an acute angle.

In an embodiment, two holes are provided, and the two holes are symmetrically arranged with respect to each other, wherein one of the holes is vertically higher than the axes of the lamp and the lamp head, and the other hole is vertically lower than the axes of the lamp and the lamp head.

In an embodiment, the lamp head further comprises a dust screen, and the dust screen covers the hole.

In one embodiment, the power supply includes a power supply circuit board, a side of the power supply circuit board close to the end wall of the power supply is higher than a side of the power supply circuit board far from the end wall of the power supply, and the side of the power supply circuit board close to the end wall of the power supply is closer to the hole than the other side of the power supply circuit board close to the hole.

In one embodiment, the lamp head further comprises two vertical ribs, and the power circuit board of the power supply is fixed with the vertical ribs.

In one embodiment, the vertical rib includes a first side, a second side and a third side, the first side and the second side are opposite to each other, the second side is close to the hole relative to the first side, the third side is far away from the side wall and is located between the first side and the second side, and the third side is connected to the power circuit board of the power supply.

In one embodiment, the extending direction of the third side and the axial direction of the lamp cap form an acute angle, so that the power circuit board connected to the power supply of the third side is inclined.

In one embodiment, the power circuit board includes a first surface and a second surface opposite and parallel to each other, the vertical rib maintains a distance between the second surface of the power circuit board and the side wall, and an extending direction of the vertical rib faces the hole.

In an embodiment, the LED lamp panel is located on a first plane, the power supply includes a power supply circuit board, the power supply circuit board of the power supply is located on a second plane, the first plane and the second plane are parallel to the axial direction of the lamp tube, an angle is included between the first plane and the second plane, and the angle is greater than 0 degree and less than or equal to 90 degrees.

Through the various embodiments of the LED straight tube lamp provided by the invention, when the LED straight tube lamp is in operation, heat energy generated by electronic elements of a power supply in the lamp cap can be more efficiently dissipated out of the lamp cap through the holes. The holes can also be used as pressure relief channels, and even if the gas in the lamp holder expands, the gas can be released through the at least one hole, so that the pressure in the lamp holder cannot rise or fall along with the temperature.

According to the invention, an angle is formed between the axial direction of the hole and the axial direction of the side wall, and the angle is an acute angle, namely, the hole is inclined, and the inclined hole is beneficial to the circulation of hot air to the outside along the hole in the process of rising (rising along the vertical direction V).

According to the invention, two holes are arranged, wherein one hole is higher than the axes of the lamp tube and the lamp holder in the vertical direction, and the other hole is lower than the axes of the lamp tube and the lamp holder in the vertical direction. Thus, the exchange of cold air and hot air is facilitated, better gas circulation efficiency can be achieved, and a better heat dissipation effect is obtained.

According to the invention, one side of the power supply circuit board of the power supply, which is close to the end wall, is higher than one side of the power supply circuit board of the power supply, which is far away from the end wall, and one side of the power supply circuit board of the power supply, which is close to the end wall, is closer to the hole relative to the other side of the power supply circuit board of the power supply, so that hot air generated by the power supply can rise along the inclination direction of the power supply and can flow to the outside of the lamp holder through the hole in the state.

The extending direction of the vertical rib faces the hole, so that a space for flowing gas can be maintained between the power supply and the side wall, and hot gas can easily flow to the outside from the hole.

According to the LED lamp panel, the LED lamp panel is located on the first plane, the power supply circuit board of the power supply is located on the second plane, the first plane and the second plane are parallel to the axial direction of the lamp tube, an angle is formed between the first plane and the second plane, the angle is larger than 0 degree and smaller than or equal to 90 degrees, through the structure that the plane where the LED lamp panel is located and the plane where the power supply circuit board of the power supply are located are staggered but not parallel, when hot air generated by the LED lamp panel and the LED light source flows to the lamp holder from the lamp tube, the hot air can smoothly pass through the power supply staggered with the LED lamp panel and further flows to the outside from the holes, and the improvement of the heat dissipation effect is facilitated.

Drawings

FIG. 1 is a schematic view of an LED straight tube lamp according to an embodiment of the invention;

FIG. 2 is an exploded schematic view of an LED straight tube lamp according to an embodiment of the invention;

FIG. 3 is a partial schematic view of an LED straight tube lamp according to an embodiment of the invention;

FIG. 4 is a partial cross-sectional view of FIG. 3 in the direction A-A';

FIG. 5 is a partial cross-sectional view of an LED straight tube lamp according to an embodiment of the invention;

FIG. 6 is a partial cross-sectional view of an LED straight tube lamp according to another embodiment of the invention;

FIGS. 7-14 are partial schematic views of LED straight tube lamps according to various embodiments of the present invention;

FIGS. 15-18 are partial cross-sectional views of LED straight tube lamps according to various embodiments of the present invention;

FIGS. 19 and 20 are partial cross-sectional views of a straight LED lamp mounted to a socket in accordance with various embodiments of the present invention;

FIG. 21 is a schematic view of a straight LED lamp mounted to a lampholder according to one embodiment of the present invention;

FIG. 22 is a partial schematic view of an LED straight tube lamp according to an embodiment of the invention;

FIG. 23 is a partial cross-sectional view of FIG. 22 in the direction B-B';

FIG. 24 is a partial perspective cross-sectional view of FIG. 22;

FIG. 25 is a partial perspective cross-sectional view of an LED straight tube lamp according to an embodiment of the invention;

FIG. 26 is a partial cross-sectional view of an LED straight tube lamp according to an embodiment of the invention;

FIG. 27 is a schematic view of an LED straight tube lamp according to an embodiment of the invention, with the viewing angle substantially horizontal to the axial direction of the lamp head;

FIG. 28 is a radial cross-sectional view of the lamp base of FIG. 27;

FIG. 29 is a partial axial cross-sectional view in the direction C-C' of FIG. 27;

FIGS. 30 and 31 are partial axial cross-sectional views of LED straight tube lamps in accordance with various embodiments of the present invention;

FIG. 32 is a partial schematic view of an LED straight tube lamp according to an embodiment of the invention with some internal components in perspective;

FIG. 33 is a partial schematic view of an LED straight tube lamp according to an embodiment of the invention;

FIG. 34 is a partial cross-sectional view of FIG. 33 in the direction D-D' with the addition of a light sensor;

fig. 35 is a partial schematic view of a welding structure of an LED lamp panel and a power supply according to an embodiment of the present invention; and

fig. 36 to 38 are schematic diagrams illustrating a welding process of an LED lamp panel and a power supply according to an embodiment of the invention.

Detailed Description

The invention provides an LED straight lamp to solve the problems. In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. The following description of the various embodiments of the present invention is provided for illustration only and to enable one skilled in the art to understand the scope of the present invention without representing all embodiments of the invention or limiting the invention to particular embodiments. The same or similar reference numerals are used to designate the same or similar elements.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It will be understood that terms such as "comprising," "including," or "having," and the like, are used herein to specify the presence of stated features (e.g., elements, units, steps, components, etc.) and are not intended to exclude other present, possible, or additional features.

It should be understood that "and/or" includes one or more combinations of juxtaposed elements. The terms "first," "second," or "third," etc. preceding the terms element, component, region, and/or area, etc., are used for distinguishing technical features for convenience of description and not limitation. Thus, a first element, component, region or section could be termed a second element, component, region or section without departing from the teachings of the present invention.

The following detailed description of specific embodiments of the invention refers to the accompanying drawings. And the embodiments of the present invention and the technical features of the embodiments may be arbitrarily combined without conflict.

If priority is claimed, the contents of the present invention will be combined with the contents of all the parent documents, but in the claims, if any conflict or inconsistency exists between the present invention and the parent documents, the claims, the specification and the application history of the present invention shall be made.

Referring to fig. 1 and 2, an embodiment of the invention provides an LED straight lamp 50, which includes a lamp tube 100, an LED lamp panel 200, and a lamp cap 300. The LED lamp panel 200 is disposed in the lamp tube 100, and the two lamp caps 300 are respectively disposed at two ends of the lamp tube 100. The lamp 100 may be a plastic lamp, a glass lamp, a plastic and metal mixed lamp, or a glass and metal mixed lamp, and the two lamp caps 300 may have the same or different sizes.

Referring to fig. 2, the LED lamp panel 200 is provided with a plurality of LED light sources 202, and the lamp cap 300 is provided with a power supply 400. The power supply 400 may be an integrated single unit (e.g., all components of the power supply 400 are disposed in a body) and disposed in a lamp cap 300 at one end of the lamp 100. Alternatively, the power supply 400 may be two separate components (e.g., the elements of the power supply 400 are divided into two parts) and disposed in the two lamp caps 300, respectively. The LED light source 202 is electrically connected to the power supply 400 through the LED lamp panel 200. The LED lamp panel 200 may be a flexible circuit board. In addition, in some embodiments, the length of the flexible circuit board is greater than the length of the lamp tube (excluding the lengths of the two lamp caps 300 respectively connected to the two ends of the lamp tube 100), or at least greater than the length of the middle portion between two transition regions (e.g., the circumferential constriction of the lamp tube) at the two ends of the lamp tube 100. In one embodiment, the flexible circuit board as the LED lamp panel 200 has a longitudinal extension length greater than that of the lamp tube 100. The middle portion of the LED lamp panel 200 may be fixed on the inner circumferential surface of the LED lamp tube 100. The two opposite short sides of the LED lamp panel 200 are not fixed to the inner circumferential surface of the lamp tube 100. The LED lamp panel 200 includes two free portions 210, and two short sides of the LED lamp panel 200 are located respectively to two free portions 210, and two free portions 210 stretch out from the opening part at the two ends of the lamp 100 in the axial direction along the lamp 100, respectively, and two free portions 210 can extend to the inside of the lamp cap 300 and be electrically connected with the power supply 400. Each lamp cap 300 is provided with two hollow conductive pins 310 for connecting an external power source, and when the LED straight lamp 50 is to be mounted on a lamp holder, the hollow conductive pins 310 can be inserted into corresponding conductive grooves in the lamp holder, so that the LED straight lamp 50 can be electrically connected with the lamp holder.

In one embodiment, the LED light panel 200 includes a flexible circuit board having a plurality of conductive circuit layers and a dielectric layer (not shown) stacked on each other. The circuit layer and the dielectric layer have the same area, or the area of the circuit layer is slightly smaller than that of the dielectric layer. The LED light source 202 is disposed on one surface of the circuit layer, and the dielectric layer is disposed on the other surface of the circuit layer away from the LED light source 202. The circuit layer is electrically connected to a power source 400 to transmit a Direct Current (DC) signal. At this time, the surface of the dielectric layer away from the circuit layer is fixed to the inner circumferential surface of the lamp tube 100 by an adhesive sheet (not shown). The wiring layer may be a metal layer or a power supply layer, which includes wiring, such as copper wiring.

In another embodiment, the outer surface of the wiring layer or the dielectric layer may be covered by a circuit protection layer. The circuit protection layer is formed by ink and has the functions of welding resistance and reflectivity increase. Alternatively, the dielectric layer may be omitted and the circuit layer may be directly bonded to the inner circumferential surface of the lamp tube 100, and the circuit protection layer is coated on the outer surface of the circuit layer. The circuit protection layer is applicable to either one-layer structure or two-layer structure. In some embodiments, the circuit protection layer is disposed on a single side/surface of the LED lamp panel 200, such as the surface with the LED light sources 202. In some embodiments, the flexible circuit board is a layer structure formed by a circuit layer; or may be a two-layer structure formed by a wiring layer and a dielectric layer. Compared with the traditional flexible substrate with a three-layer structure (a dielectric layer is sandwiched between two circuit layers), the flexible circuit flexible board has better flexibility and is easier to bend. Therefore, the flexible circuit board of the LED lamp panel 200 can be installed in a lamp tube with a shape conforming to the specification or in a non-tubular lamp tube, and is suitable for being installed on the inner surface of the lamp tube 100. In some cases, the flexible circuit board can be tightly fitted on the inner surface of the lamp tube 100. In addition, the flexible circuit soft board with fewer layers can improve heat dissipation and reduce material cost.

However, the flexible circuit board is not limited to a single layer or a double layer. In other embodiments, the flexible circuit board may include a plurality of circuit layers and a plurality of dielectric layers (not shown), and the circuit layers and the dielectric layers are sequentially stacked in an alternating manner. The layers stacked alternately are away from the surface of the outermost wiring layer on which the LED light sources 202 are disposed, and are electrically connected to the power supply 400. Moreover, the extension length of the flexible circuit board is greater than the length of the lamp 100.

In one embodiment, the LED lamp panel 200 includes a flexible circuit board, which sequentially includes a first circuit layer, a dielectric layer and a second circuit layer (not shown). The thickness of the second circuit layer is greater than that of the first circuit layer, and/or the extension length of the LED lamp panel 200 is greater than that of the lamp tube 100. The end region of the LED lamp panel 200 extends beyond the end of the lamp tube 100 and has no LED light source 202 thereon, and the end region of the LED lamp panel 200 has two separate through holes (not shown) electrically connected to the first circuit layer and the second circuit layer, respectively. The two through holes are not communicated with each other to avoid short circuit.

In this case, the second circuit layer has a thicker thickness to support the first circuit layer and the dielectric layer, and the LED lamp panel 200 connected to the inner circumferential surface of the lamp tube 100 is not easily moved or deformed, thereby improving the yield of the product. In addition, the first circuit layer and the second circuit layer are electrically connected with each other, so that the circuit layout of the first circuit layer can extend downwards to the second circuit layer to complete the circuit layout of the whole LED lamp panel 200. In some embodiments, the first circuit layer connects the positive electrodes and the second circuit layer connects the negative electrodes. Moreover, the circuit layout can be arranged at two layers, the area of each single layer and the width of the LED lamp panel 200 can be reduced, and therefore more LED lamp panels 200 can be placed on the production line to improve the production efficiency. Further, the first circuit layer and the second circuit layer of the end region of the LED lamp panel 200, which is beyond the end of the lamp 100 and is not provided with the LED light source 202, can be used to complete the circuit layout of the power supply 400, so that the power supply 400 can be directly disposed on the flexible circuit board of the LED lamp panel 200.

As shown in fig. 2, the lamp 100 includes two end regions 101, two transition regions and a body region 102, the two end regions 101 are located at two opposite ends of the body region 102, and the two transition regions are respectively located between the two end regions 101 and the body region 102. Two lamp caps 300 are connected to the two end regions 101, respectively. The end region 101 is a radially inwardly contracted portion of the lamp 100, the end region 101 forms a reduced opening, and the diameter of the end region 101 is smaller than that of the body region 102. That is, the lamp 100 may be tapered or tapered at the transition region to have a smaller diameter when viewed along the length of the lamp 100 from the body region 102 to the end region 101. The narrowing or tapering may be a continuous, smooth manner (e.g., an angle that forms a smooth curve rather than a straight line). By avoiding the formation of included angles, particularly acute angles, lamp tube 100 is less likely to break or split when stressed. Further, the two ends of the transition region include two curved sections, wherein one curved section faces the inner side of the lamp tube 100, and the other curved section faces the outer side of the lamp tube 100. For example, the curved section near the body region 102 is convex as viewed from the inside of the lamp vessel 100, while the curved section near the end region 101 is concave as viewed from the inside of the lamp vessel 100. In one embodiment, the transition region of the lamp 100 includes only smoothly curved sections and does not include any planar portions having included angles. As shown in fig. 1, the appearance of the LED straight lamp 50 is uniform from the lamp tube 100 to the lamp cap 300, that is, the outer surface of the lamp cap 300 is flush with the outer surface of the lamp tube 100.

Referring to fig. 3 and 4, fig. 3 is a partial schematic view of an LED straight tube lamp 50, and fig. 4 is a cross-sectional view of fig. 3 in a direction a-a'. The base 300 of the present embodiment further includes a sidewall 301, an end wall 302 and a hole 320. The sidewall 301 is tubular. Sidewall 301 is coaxial with lamp 100 and connected to each other, which means that lamp head 300 and lamp 100 may have tolerance in manufacturing, and therefore their axes are slightly offset, but in general lamp head 300 and lamp 100 are coaxial. The end wall 302 is substantially perpendicular to the axial direction of the side wall 301, and the end wall 302 connects the end of the side wall 301 away from the lamp vessel 100, said perpendicular means that the end wall 302 and the side wall 301 may have a tolerance in manufacturing, and thus they are not 90 degrees perpendicular but slightly inclined, and optionally they are inclined by ± 20 degrees based on 90 degrees, and this still falls within the range of said perpendicular. However, even if the end wall 302 is slightly inclined with respect to the axial direction of the side wall 301, it may form a space for disposing the power supply 400 together with the side wall 301 and may match the lamp socket. The side wall 301 and the end wall 302 form an inner space of the lamp cap 300, the power source 400 is disposed in the inner space of the lamp cap 300, and the hole 320 penetrates the end wall 302, i.e., the hole 320 communicates the inner space of the lamp cap 300 with the outside, and the gas can flow between the inner space of the lamp cap 300 and the outside through the hole 320. Also, the hole 320 facilitates pressure relief (i.e., the hole 320 is a pressure relief hole), and the light sensor 450 (see fig. 34) can be disposed in the lamp cap 300 and aligned with the hole 320 for light detection and electric shock protection during the process of mounting or dismounting the LED straight lamp 50 to or from the lamp socket.

The power supply 400 may be a modular type, that is, the power supply 400 may be an integrated power supply module. The power supply 400 may be an integrated single unit (e.g., all components of the power supply 400 are disposed in a body) and disposed in a lamp cap 300 at one end of the lamp 100. Alternatively, the power supply 400 may be two separate components (e.g., the elements of the power supply 400 are divided into two parts) and disposed in the two lamp caps 300, respectively. The power supply 400 further includes a conductive pin 410, wherein the conductive pin 410 extends from the power supply 400 to the inside of the hollow conductive pin 310 and is connected to the hollow conductive pin 310, in other words, the power supply 400 can be electrically connected to an external power supply through the conductive pin 410 and the hollow conductive pin 310. A hollow conductive pin 310 is provided outside the end wall 302 and extends in the axial direction of the side wall 301. As shown in fig. 4, when the LED straight lamp 50 is mounted on a horizontal lamp holder (not shown), the axial direction of the sidewall 301 is substantially parallel to the horizontal direction H, and the two hollow conductive pins 310 are overlapped with each other at the same height in the vertical direction V, and at this time, the position of the hole 320 in the vertical direction V is higher than the axial center of the sidewall 301.

In the present embodiment, as shown in fig. 4, the axial direction of the hole 320 is substantially parallel to the axial direction of the sidewall 301. The axial direction of the hole 320 is defined as the extending direction of the hole 320, which penetrates from the inner side wall surface (the surface located in the inner space of the base 300) of the end wall 302 and extends to the outer side wall surface (the surface located outside). In the embodiment, the hole 320 is substantially aligned with the inner sidewall surface (the surface located in the inner space of the lamp cap 300) of the sidewall 301. Specifically, a portion of the wall of the hole 320 is substantially aligned with a portion of the inner sidewall surface of the sidewall 301.

In the present embodiment, as shown in fig. 4, in the radial direction of the lamp cap 300 (substantially parallel to the vertical direction V of fig. 4), an end wall radius r is defined from the center of the end wall 302 (where the axial center of the side wall 301 passes) to the periphery of the end wall 302, and the distance between the hole 320 and the center of the end wall 302 is defined as a distance L. Distance L is 2/5 to 4/5 of end wall radius r, i.e., the position of hole 320 relative to the center of end wall 302 conforms to the following equation:

0.4r≦L≦0.8r

when the position of the hole 320 relative to the center of the end wall 302 satisfies the above equation, the gas communication between the LED straight lamp 50 and the outside can be achieved with better efficiency.

Referring to fig. 5, the difference between the LED straight tube lamp 50 of fig. 5 and fig. 4 is the pattern of the holes 320. In this embodiment, as shown in fig. 5, the holes 320 may also be inclined. An angle θ 1 is formed between the axial direction of the hole 320 and the axial direction of the side wall 301, the angle θ 1 is an acute angle, and the axial direction of the hole 320 is defined as the extending direction of the hole 320 from the inner side wall surface to the outer side wall surface of the end wall 302. When the LED straight lamp 50 is installed in a horizontal lamp socket, the axial directions of the lamp 100 and the lamp cap 300 are substantially parallel to the horizontal direction H, and the hole 320 is higher than the axial centers of the lamp 100 and the lamp cap 300 in the vertical direction V. When the power source 400 generates heat due to operation, the inclined holes 320 shown in fig. 5 facilitate the hot air to flow to the outside along the holes 320 during the process of rising (rising along the vertical direction V).

Also, there may be two apertures 320. As shown in fig. 5, the two inclined holes 320 are substantially symmetrical to each other. When the LED straight lamp 50 is installed in a horizontal lamp socket, the axial directions of the lamp 100 and the lamp cap 300 are substantially parallel to the horizontal direction H, one of the holes 320 is higher than the axial centers of the lamp 100 and the lamp cap 300 in the vertical direction V, and the other hole 320 is lower than the axial centers of the lamp 100 and the lamp cap 300 in the vertical direction V. The axial direction of the two holes 320 and the axial direction of the sidewall 301 have an acute angle therebetween. When the power supply 400 generates heat due to operation, the upper hole 320 shown in fig. 5 facilitates the hot air to flow to the outside along the upper hole 320 during the process of rising (rising along the vertical direction V), and the lower hole 320 shown in fig. 5 facilitates the cold air from the outside to flow into the inner space of the lamp cap 300 along the lower hole 320. Thus, the exchange of cold air and hot air is facilitated, better gas circulation efficiency can be achieved, and a better heat dissipation effect is obtained.

Referring to fig. 6, the difference between the LED straight tube lamp 50 of fig. 6 and fig. 4 is the pattern of the holes 320. In various embodiments, as shown in FIG. 6, the holes 320 may not be aligned with the inner sidewall surface of the sidewall 301. The aperture 320 of fig. 6 is further from the periphery of the end wall 302 than the aperture 320 of fig. 4.

In order to prevent the opening of the hole 320 from being too large, so that external dust can easily enter the inner space of the lamp cap 300 through the hole 320 and accumulate on the power supply 400, thereby adversely affecting the overall heat dissipation effect. The aperture 320 may have a smaller radial area than 1/10 of the radial area of the end wall 302, in which case dust is less likely to enter the interior space of the lamp cap 300 through the aperture 320. Taking the standard LED lamp of T8 as an example, the outer diameter of the lamp 100 ranges from 25mm to 28mm, and the outer diameter of the lamp cap 300 (i.e. the diameter of the end wall 302 in the vertical direction V shown in fig. 4) is substantially equal to the outer diameter of the lamp 100. If the diameter of the end wall 302 in the vertical direction V shown in fig. 4 is 25mm, the area of the end wall 302 in the vertical direction V is 490.625 square millimeters, which is equal to the square of the radius multiplied by 3.14, and the opening area (radial area) of the hole 320 in the vertical direction V may range from 0.5 square millimeters to 6 square millimeters. For example, if the radial area of aperture 320 is 6 square millimeters and the radial area of end wall 302 is 490.625 square millimeters, the radial area of aperture 320 is approximately 1/100 the radial area of end wall 302. In this case, dust is less likely to enter the inner space of the lamp cap 300 through the holes 320. In various embodiments, the opening area (radial area) of the hole 320 in the vertical direction V may range from 0.5mm square to 3 mm square, in which case dust is less likely to enter the inner space of the lamp head 300 through the hole 320.

In various embodiments, the base 300 can further include a dust screen (not shown), which is a mesh with a plurality of holes. The dust screen may cover the holes 320, for example, by being fixed to the outer wall surface or the inner wall surface of the end wall 302, such that the dust screen covers the holes 320, and thus the dust screen can effectively block dust and maintain good gas flow efficiency.

Referring to fig. 7, the lamp head 300 of fig. 7 and fig. 3 is different in the form of the holes 320.

In fig. 3, the opening of the hole 320 is circular in shape. In the embodiment, as shown in fig. 7, the opening shape of the hole 320 may also be a long and flat arc shape, and the opening shape of the hole 320 in fig. 7 may be defined as two opposite long sides 320l (arc sides) and two opposite short sides 320s located between the two long sides 320l, and a distance I is provided between the two long sides, and the distance I is a shortest distance between the two long sides 320 l. In this case, the pitch I of the holes 320 is much shorter than the length of the long side 320l, so that the opening area of the holes 320 of fig. 7 is larger than that of the holes 320 of fig. 3 even if the pitch I of the holes 320 of fig. 7 is equal to or slightly smaller than the diameter (i.e., the diameter) of the openings of the holes 320 of fig. 3. Thus, the holes 320 of fig. 7 not only can effectively prevent most of the dust from passing through, but also can maintain better gas flow efficiency due to the larger opening area. In one embodiment, the distance between the holes 320 is 0.5mm to 1.5mm, and the length of the long side 320l of the hole 320 is 1mm to 7 mm.

In different embodiments, the number, shape, position or configuration of the holes 320 can be designed differently according to the needs, as will be described in detail later.

Referring to fig. 8, the difference between the lamp head 300 of fig. 8 and the lamp head 300 of fig. 7 is the number and the type of the holes 320, in this embodiment, there are two holes 320 of fig. 8, and the two holes 320 are substantially symmetrical to each other. The two symmetrical holes 320 shown in fig. 8 facilitate the exchange of cold and hot air, so as to achieve better air circulation efficiency and better heat dissipation.

Referring to fig. 9, the difference between the lamp head 300 of fig. 9 and fig. 7 is the number and the type of the holes 320, in this embodiment, there are two holes 320 of fig. 9, and the two holes 320 are adjacent to each other. In the case where the short-side spacing of any one of the apertures 320 in FIG. 9 is still substantially equal to the short-side spacing of the aperture 320 in FIG. 7, the sum of the opening areas of two adjacent apertures 320 in FIG. 9 is larger than the opening area of a single aperture 320 in FIG. 7, which is designed to facilitate gas flow, but still reduce the possibility of dust entering the lamp head 300 through the apertures 320.

Referring to fig. 10, the difference between the lamp head 300 of fig. 10 and fig. 9 is the number and type of the holes 320. In the present embodiment, there are two sets of the holes 320 in fig. 10, each set has two adjacent holes 320, and the two sets of the holes 320 are symmetrical to each other. The design is beneficial to air circulation and cold and hot air exchange, and the possibility of dust entering the lamp cap 300 through the holes 320 can be reduced.

Referring to fig. 11, the difference between the lamp head 300 of fig. 11 and fig. 9 is the type of the holes 320, in which two opposite short sides of each hole 320 of fig. 9 have rounded corners, and in the present embodiment, two opposite short sides of each hole 320 of fig. 11 are right-angled. Referring to fig. 12, the difference between the lamp head 300 of fig. 12 and fig. 10 is the type of the holes 320, in which two opposite short sides of each hole 320 of fig. 10 have rounded corners, and in the present embodiment, two opposite short sides of each hole 320 of fig. 12 are right-angled. In various embodiments, the opening of the hole 320 may be in the shape of a long, thin, straight strip.

Referring to fig. 13, the difference between the lamp head 300 of fig. 13 and fig. 3 is the number and type of the holes 320. In the embodiment, the lamp cap 300 of fig. 13 includes a plurality of holes 320, and the holes 320 are holes with circular openings and are asymmetrically distributed on the end wall 302. Referring to fig. 3 and 13, when the LED straight lamp 50 is installed in a horizontal lamp socket, the axial directions of the lamp 100 and the lamp head 300 are substantially parallel to the horizontal direction H, and at least one of the holes 320 in fig. 13 is higher than the axial center of the lamp 100 and the lamp head 300 in the vertical direction V. In the present embodiment, the holes 320 in fig. 13 are all higher than the axes of the lamp 100 and the lamp head 300 in the vertical direction V. In various embodiments, the openings of the holes 320 symmetrically distributed on the end wall 302 may have other shapes, such as an oval shape, and at least a portion of the opening of at least one of the holes 320 is higher than the axial center of the lamp 100 and the lamp head 300 in the vertical direction V.

Referring to fig. 14, the difference between the lamp head 300 of fig. 14 and fig. 13 is the number, arrangement and type of the holes 320. In the present embodiment, the lamp cap 300 of fig. 14 includes a plurality of holes 320, and the holes 320 are distributed on the end wall 302 around the axis of the lamp cap 300 in a point-symmetric manner with the axis of the lamp cap 300 as a symmetric center.

Referring to fig. 15, the difference between the LED straight tube lamp 50 of fig. 15 and fig. 4 is the type of the power source 400 and the holes 320. The power supply 400 of fig. 15 includes a power circuit board 420 and one or more electronic components 430, and the power circuit board 420 includes a first side 421 and a second side 422 opposite and parallel to each other. The first side 421 and the second side 422 of the power circuit board 420 are substantially perpendicular to the axial direction of the sidewall 301, the second side 422 of the power circuit board 420 is close to the end wall 302 of the lamp cap 300 relative to the first side 421, and at least a portion of the power supply 400 is located in the lamp cap 300. The electronic component 430 is disposed on the first surface 421 of the power circuit board 420. The electronic component 320 is, for example, a capacitor.

In the present embodiment, as shown in fig. 15, the second face 422 of the power circuit board 420 contacts the inner side wall face of the end wall 302. Moreover, the conductive pin 410 (not shown in fig. 15) of the power supply 400 can be directly inserted into the hollow conductive pin 310 from the power circuit board 420; alternatively, the hollow conductive pins 310 may directly contact corresponding contacts on the second side 422 of the power circuit board 420. In addition, the free portion 210 is connected to the first surface 421 of the power circuit board 420. In various embodiments, the second surface 422 of the power circuit board 420 may not contact the inner sidewall surface of the end wall 302, but the second surface 422 of the power circuit board 420 is spaced from the inner sidewall surface of the end wall 302 by a certain distance, and the space between the power circuit board 420 and the end wall 302 is favorable for the circulation of gas. The free portion 210 is connected to a second surface 422 (not shown) of the power circuit board 420.

In the present embodiment, as shown in fig. 15, the second surface 422 of the power circuit board 420 completely contacts the inner side wall surface of the end wall 302 and covers the hole 320. Therefore, the heat generated by the power circuit board 420 can directly exchange heat with the external cold air through the hole 320, thereby achieving a good heat dissipation effect. Moreover, in the case that the second surface 422 of the power circuit board 420 completely covers the hole 320, dust is blocked by the power circuit board 420 and does not enter the inner space of the lamp head 300 through the hole 320, and therefore, the opening area of the hole 320 in fig. 15 may be larger than that of the hole 320 in fig. 4.

In various embodiments, the second face 422 of the power circuit board 420 contacts the inner sidewall surface of the end wall 302, but the light head 300 does not have the hole 320. In this case, the end wall 302 may include a material with high thermal conductivity, for example, the end wall 302 is made of a composite material, wherein the hollow conductive pin 310 of the end wall 302 is made of an insulating material, and the rest of the end wall 302 is made of aluminum, so that the heat generated by the power circuit board 420 can be directly conducted to the aluminum portion of the end wall 302, and then exchanges heat with the external cold air through the aluminum portion of the end wall 302, thereby achieving a good heat dissipation effect. In different embodiments, the hole 320 may be disposed on the sidewall 301 instead, so that when the LED straight lamp 50 is installed in a horizontal lamp holder, the hole 320 on the sidewall 301 is higher than the axial center of the lamp 100 and the lamp cap 300 in the vertical direction V.

Referring to fig. 16, the difference between the LED straight tube lamp 50 of fig. 16 and fig. 15 is that the power supply 400 of fig. 16 further includes a heat dissipation element or driving module 440. The heat dissipation element or driving module 440 is disposed on the second surface 422 of the power circuit board 420, and the heat dissipation element or driving module 440 extends into the hole 320. In one embodiment, the heat dissipation element 440a is a heat dissipation member, such as a metal heat pipe or a heat conduction fin, so that heat generated by the electronic element 430 on the power circuit board 420 can be conducted to the heat dissipation element 440a, and then exchanges heat with external cold air through the heat dissipation element 440a, thereby achieving a good heat dissipation effect. Since the driving module 440b is the main heat source of the electronic components of the power supply 400, the general electronic components 430 (the general electronic components 430 generate less heat relative to the driving module 440b) of the electronic components are separately disposed from the driving module 440b, which is beneficial to improving the heat dissipation effect. For example, the general electronic component 430 is disposed on the first side 421 of the power circuit board 420, and the driving module 440b with relatively high heat generation is disposed on the second side 422 of the power circuit board 420 and adjacent to the at least one hole 320. The heat dissipation element or the driving module 440 can be disposed in the hole 320, so that heat generated by the heat dissipation element or the driving module 440 can be directly exchanged with cold air from the outside, thereby achieving a good heat dissipation effect. The driving module 440b includes electronic components with relatively high heat generation, such as inductors, transistors, or integrated circuits, and the inductors, transistors, or integrated circuits can be disposed in the holes 320 to improve the heat dissipation effect.

In various embodiments, a plurality of heat dissipation elements or driving modules 440 of the power supply 400 may be respectively disposed in the plurality of holes 320. For example, the inductor, the transistor, and the integrated circuit of the power supply 400 may be respectively located in the plurality of holes 320; alternatively, the heat sinks, inductors, transistors, and integrated circuits of the power supply 400 may be located in the holes 320, respectively.

Referring to fig. 16 and 17, the difference between fig. 16 and 17 is whether the heat dissipation element or the driving module 440 is tightly fit with the hole 320. The heat dissipation element or driving module 440 (in this case, the heat dissipation element 440a) and the hole 320 of fig. 16 are closed in the radial direction of the hole 320, that is, the shape and size of the cross section of the heat dissipation element or driving module 440 in the radial direction are exactly complementary to the shape and size of the opening of the hole 320 in the radial direction. In one embodiment, the heat dissipation element or at least one element of the driving module 440 and the at least one hole 320 are substantially sealed with each other in a radial direction of the hole 320. The heat dissipation element or driving module 440 (the driving module 440b in this example) of fig. 17 has a gap G with the hole 320 in the radial direction of the hole 320, so that when the heat dissipation element or driving module 440 is located in the hole 320, the external air can still freely flow into the hole 320 through the gap G. The radial close fit between the heat dissipation element or driving module 440 and the hole 320 in fig. 16 is not equal to the airtight effect, and a gap that is invisible to naked eyes may still exist between the heat dissipation element or driving module 440 and the hole 320 in fig. 16, but the gap in this state is much smaller than the gap G in fig. 17, and the external cold air is greatly blocked from flowing into the hole 320.

Referring to fig. 18, the difference between the LED straight tube lamp 50 of fig. 18 and fig. 4 is the type of the power source 400. The power supply 400 of fig. 18 includes a power circuit board 420, one or more electronic components 430, and a heat dissipation component or driving module 440, the power circuit board 420 includes a first surface 421 and a second surface 422 that are opposite and substantially parallel to each other, and the first surface 421 and the second surface 422 of the power circuit board 420 are substantially parallel to the axial direction of the sidewall 301. The electronic device 430 and the heat dissipation device or the driving module 440 (in this case, the driving module 440b) are disposed on the first surface 421 of the power circuit board 420, and the heat dissipation device or the driving module 440 is close to the hole 320 relative to the electronic device 430. In an embodiment, the heat dissipation element 440a is a metal heat pipe or a heat conduction fin, so that heat generated by the power circuit board 420 can be conducted to the heat dissipation element 440a, and the heat dissipation element 440a is closer to the hole 320 than the electronic element 430, which is beneficial for heat exchange between the heat dissipation element 440a and external cold air, thereby achieving a good heat dissipation effect. In one embodiment, the driving module 440b is closer to the hole 320 than the electronic component 430 (the electronic component 430 generates less heat than the driving module 440b), which is beneficial for the heat generated by the driving module 440b to exchange heat with the external cold air, so as to achieve a good heat dissipation effect. Wherein the driving module 440b includes one or more specific electronic components generating more heat. The specific electronic device includes an inductor, a transistor, or an integrated circuit, so that the inductor, the transistor, or the integrated circuit can be close to the hole 320 relative to the general electronic device 430, thereby facilitating the improvement of the heat dissipation effect.

Referring to fig. 19, fig. 19 is a partial schematic view illustrating the LED straight lamp 50 mounted on the lamp socket 60. The LED straight lamp 50 of fig. 19 includes a coupling structure, a portion of which is provided at the end region 101 of the lamp 100 and another portion of which is provided at the base 300, through which the lamp 100 and the base 300 can be connected to each other. The combination structure includes a first thread 3001 disposed on the sidewall 301 and a second thread 1001 disposed on the end region 101 of the lamp tube 100, the first thread 3001 is disposed on an inner sidewall surface of the sidewall 301 and at an end of the sidewall 301 away from the end wall 302, the second thread 1001 is disposed on an outer sidewall surface of the end region 101 of the lamp tube 100 and near an open end of the lamp tube 100 (i.e., opposite ends of the lamp tube 100), the first thread 3001 corresponds to the second thread 1001, and the lamp cap 300 can be connected to the lamp tube 100 by the first thread 3001 and the second thread 1001 being rotated oppositely. Through the coupling structure, the lamp cap 300 can be easily assembled to the lamp tube 100 or disassembled from the lamp tube 100.

As shown in fig. 19, in the present embodiment, when the first thread 3001 and the second thread 1001 are screwed together (i.e. when the lamp cap 300 is properly assembled to the lamp 100), the hole 320 rotates to a predetermined position around the axis of the lamp 100. Specifically, the predetermined position means that when the lamp holder 60 is horizontally or substantially horizontally disposed and the LED straight lamp 50 is horizontally installed on the lamp holder 60, the axial directions of the lamp tube 100 and the lamp cap 300 are substantially parallel to the horizontal direction H, and the predetermined position where the hole 320 is located is higher than the axis of the tube wall 302 in the vertical direction V.

As shown in fig. 19, in the present embodiment, the combination structure further includes a first positioning unit 3002 disposed on the sidewall 301 and a second positioning unit 1002 disposed on the end region 101 of the lamp tube 100. The first positioning unit 3002 corresponds to the second positioning unit 1002. When the first thread 3001 and the second thread 1001 are screwed, the first positioning unit 3002 matches the second positioning unit 1002 to position the lamp 100 and the lamp cap 300 with each other. In the present embodiment, the first positioning unit 3002 is a concave point concavely disposed on the inner sidewall surface of the sidewall 301, and the second positioning unit 1002 is a convex point convexly disposed on the outer sidewall surface of the end region 101 of the lamp 100. When the first thread 3001 and the second thread 1001 are screwed, the convex point of the second positioning unit 1002 will be engaged with the concave point of the first positioning unit 3002, thereby generating the positioning and fixing effect. Also, a slight sound or vibration is generated when the first positioning unit 3002 and the second positioning unit 1002 are engaged with each other. Therefore, in the process that the lamp head 300 is assembled on the lamp tube 100 by the assembly personnel through the first screw 3001 and the second screw 1001, once the first positioning unit 3002 and the second positioning unit 1002 are matched with each other (engaged with each other) to generate sound or vibration, the assembly personnel can immediately know that the lamp head 300 is properly assembled on the lamp tube 100 at the moment, and stop the rotation action in time. Therefore, the assembling efficiency is improved.

In various embodiments, the first positioning unit 3002 may be a bump, and the second positioning unit 1002 may be a pit. In different embodiments, the first positioning unit 3002 and the second positioning unit 1002 may be located at different positions on the lamp head 300 and the end region 101 of the lamp 100, respectively, as long as the positions when the first positioning unit 3002 and the second positioning unit 1002 are matched with each other may correspond to a state where the lamp head 300 has been properly assembled onto the lamp 100.

As shown in fig. 19, the LED straight lamp 50 is mounted to the lamp socket 60 by inserting the hollow conductive pin 310 of the lamp cap 300 into the conductive groove 61 of the lamp socket 60, and then further rotating the LED straight lamp 50 with the axial center of the lamp tube 100 and the lamp cap 300 as the rotation center to rotate the hollow conductive pin 310 to a specific position in the conductive groove 61, thereby completing the mounting.

In the present embodiment, the torque value required to be applied when the first screw 3001 and the second screw 1001 are screwed together is greater than the torque value required to be applied when the LED straight lamp 50 is mounted to the lamp socket 60 (i.e., when the hollow conductive pin 310 is rotated in the conductive groove 61). In other words, the friction force between the first threads 3001 and the second threads 1001 of the completed LED straight lamp 50 is greater than the friction force between the hollow conductive pin 310 and the conductive groove 61 of the completed LED straight lamp 50. In one embodiment, the friction between the first thread 3001 and the second thread 1001 is at least one time greater than the friction between the hollow conductive pin 310 and the conductive slot 61. When the installed LED straight lamp 50 is to be detached from the lamp holder 60, the hollow conductive pin 310 needs to be reversely rotated to a specific position in the conductive groove 61, and then the LED straight lamp 50 is pulled out of the lamp holder 60 (i.e. the hollow conductive pin 310 is pulled out of the conductive groove 61). Since the friction force between the first thread 3001 and the second thread 1001 is greater than the friction force between the hollow conductive pin 310 and the conductive groove 61, the relative positions of the first thread 3001 and the second thread 1001 can be maintained fixed when the hollow conductive pin 310 is reversely rotated in the conductive groove 61. Therefore, during the process of detaching the LED straight lamp 50 from the lamp holder 60, the lamp cap 300 can be prevented from being accidentally released from the lamp tube 100.

Referring to fig. 20, fig. 20 is a partial schematic view illustrating the LED straight lamp 50 mounted on the lamp socket 60, and the difference between the LED straight lamp 50 of fig. 20 and fig. 19 lies in the combination structure. As shown in fig. 20, in the present embodiment, the combination structure includes an annular protrusion 3003 disposed on the sidewall 301 and an annular sliding groove 1003 disposed on the end region 101 of the lamp 100. The annular protrusion 3003 protrudes from the inner sidewall of the sidewall 301 and is located at an end of the sidewall 301 away from the end wall 302, and the annular sliding slot 1003 is recessed from the outer sidewall of the end region 101 of the lamp 100. The annular protrusion 3003 corresponds to the annular sliding slot 1003, and the lamp cap 300 can be inserted into the annular sliding slot 1003 through the annular protrusion 3003 to connect to the lamp 100. When the annular protrusion 3003 and the annular sliding groove 1003 are fitted into each other, the lamp 100 and the base 300 are rotatably connected to each other. Specifically, the annular protrusion 3003 is slidable in the annular slide groove 1003, and the lamp 100 and the base 300 are coupled to each other via the annular protrusion 3003 and the annular slide groove 1003, and have a degree of freedom of relative rotation about the axial center of the lamp 100 and the base 300.

As shown in fig. 20, in the present embodiment, the combination structure further includes a first positioning unit 3002 disposed on the sidewall 301 and a second positioning unit 1002 disposed on the end region 101 of the lamp 100, wherein the structures and functions of the first positioning unit 3002 and the second positioning unit 1002 are as described above, and are not described herein again. Although the lamp 100 and the base 300 are rotatably connected to each other by the annular protrusion 3003 and the annular sliding groove 1003 being engaged with each other, when the lamp 100 and the base 300 are rotated to a specific position relative to each other, the first positioning unit 3002 is matched with the second positioning unit 1002 (for example, the concave point of the first positioning unit 3002 is engaged with the convex point of the second positioning unit 1002), so that the lamp 100 and the base 300 can be positioned and fixed with each other. Through the coupling structure, the lamp cap 300 can be easily assembled to the lamp tube 100 or disassembled from the lamp tube 100.

As shown in fig. 20, in the present embodiment, the end region 101 of the lamp vessel 100 for connecting the base 300 is radially inwardly retracted. The extent of the retraction of the end region 101 (the difference in level of the body region 102 in the radial direction from the end region 101) corresponds to the thickness of the side wall 301 of the burner 300. Therefore, when the base 300 and the lamp 100 are connected to each other, the outer wall surfaces of the sidewalls 301 of the base 300 are flush with the outer wall surfaces of the lamp 100.

In various embodiments, the annular runner 1003 may instead be disposed on the sidewall 301, and the annular protrusion 3003 may instead be disposed on the end region 101 of the lamp 100. Furthermore, the bonding structure may also comprise a hot melt adhesive, which may be provided between the connections of the lamp vessels 100 and the lamp caps 300 (e.g. between the end regions 101 and the side walls 301 of the lamp vessels 100). When the assembling personnel wants to assemble the lamp tube 100 and the lamp cap 300, the lamp cap 300 can be assembled on the lamp tube 100 through the combination structure before the hot melt adhesive is solidified. After the hot melt adhesive is heated and absorbs heat to expand, the hot melt adhesive flows, and is solidified after being cooled, so that the lamp cap 300 can be combined with the lamp tube 100 (not shown). When the hot melt adhesive is heated from room temperature (about 15 to 30 degrees celsius) to about 200 to 250 degrees celsius, the volume of the hot melt adhesive expands about 1.3 times its original size. The base 300 and the ends of the lamp vessel 100 can be fixed to each other by means of a hot melt adhesive, so that a moment of about 1.5 to 5 newton meters (Nt-m) is sufficient for loading in a torque test and/or a moment of about 5 to 10 newton meters (Nt-m) is sufficient for loading in a bending test. During the heating and curing of the hot melt adhesive, the heat and pressure inside the lamp cap 300 will increase and will be dissipated and released from the at least one hole 320 of the lamp cap 300. After the hot melt adhesive is solidified, the lamp cap 300 can be more stably fixed to the lamp tube 100. In this case, unless the hot melt adhesive is restored to a liquid state through a specific procedure, the lamp cap 300 and the lamp tube 100 are difficult to separate, so that the convenience of the LED straight lamp 50 in assembly and the robustness after assembly can be both considered.

Referring to fig. 21, fig. 21 is a partial schematic view of the LED straight lamp 50 mounted on the inclined lamp base 60. In various embodiments, the LED straight lamp 50 can also be mounted on the inclined or vertical lamp base 60 in an inclined or vertical manner. In the present embodiment, as shown in fig. 21, the lamp socket 60 is inclined, so that when the LED straight lamp 50 is mounted on the lamp socket 60, the axis of the LED straight lamp 50 forms an acute angle with the horizontal direction H. When the LED straight lamp 50 is installed in the lamp holder 60 and then tilted, the hole 320 of the lamp cap 300 is still higher than the axis of the LED straight lamp 50 in the vertical direction V, which is beneficial to improving the heat dissipation effect.

Referring to fig. 22, 23 and 24, fig. 22 is a partial schematic view of an LED straight tube lamp 50 according to an embodiment of the invention, fig. 23 is a partial sectional view of fig. 22 in a direction B-B', and fig. 24 is a perspective sectional view of fig. 22 with parts omitted. The difference between the lamp cap 300 of fig. 22-24 and the lamp cap 300 of fig. 3 is the pattern of the holes 320, and the lamp cap 300 of fig. 22-24 further includes two vertical ribs 330. in addition, the vertical ribs 330 are used to fix the power circuit board 420 of the power supply 400, and therefore, the power circuit board 420 of the power supply 400 of fig. 22-24 has different angles with respect to the lamp cap 300 according to the shape of the vertical ribs 330.

As shown in fig. 22, in the present embodiment, the opening of the hole 320 is arcuate, and the size and the position of the hole 320 correspond to the two vertical ribs 330, that is, if the hole 320 is viewed into the lamp cap 300 in a direction substantially horizontal to the axial direction of the lamp cap 300, the two vertical ribs 330 can be viewed. Further, two vertical ribs 330 are disposed on the inner side wall surface of the side wall 301, and the two vertical ribs 330 are spaced from each other and extend along the axial direction of the side wall 301. The vertical ribs 330 are substantially perpendicular to the plane of the power circuit board 420 of the power supply 400, in other words, if viewed in a radial section of the lamp head 300, the two vertical ribs 330 are vertically standing on one side of the power circuit board 420 of the power supply 400. As illustrated in fig. 23, when the LED straight lamp 50 is horizontally disposed, the axial direction of the lamp head 300 is substantially parallel to the horizontal direction H, and the vertical rib 330 extends from the inner sidewall surface of the sidewall 301 along the vertical direction V and is connected to the power circuit board 420 of the power supply 400.

As shown in fig. 23 and 24, the vertical rib 330 includes a first side 331, a second side 332 and a third side 333, the first side 331 and the second side 332 are opposite to each other, the second side 332 is close to the hole 320 relative to the first side 331, the third side 333 is far away from the sidewall 301 and is located between the first side 331 and the second side 332, and the third side 333 is connected to the power circuit board 420 of the power supply 400. The third side 333 may be connected to the power circuit board 420 of the power supply 400 by an adhesive or a tenon, but is not limited thereto.

In the present embodiment, as shown in fig. 22 to 24, the shortest distance between the third side 333 of the vertical rib 330 and the side wall 301 is gradually decreased toward the end wall 302 along the axial direction of the side wall 301. As described with reference to fig. 23, the shortest distance means a height of the vertical rib 330 in the vertical direction V from the side wall 301 at any point in the horizontal direction H. Moreover, the height of the vertical rib 330 is gradually reduced toward the end wall 302 along the axial direction of the side wall 301, that is, the height of the vertical rib 330 relative to the side wall 301 is gradually reduced from the first side 331 to the second side 332 thereof, so that the extending direction of the third side 333 and the axial direction of the lamp cap 300 form an acute angle, and accordingly, the power circuit board 420 of the power supply 400 connected to the third side 333 is also inclined. If fig. 23 illustrates that the heights of the side of the power circuit board 420 of the power supply 400 close to the end wall 302 and the other side thereof far from the end wall 302 are different in the vertical direction V, the side of the power circuit board 420 of the power supply 400 close to the end wall 302 is higher than the side of the power circuit board 420 of the power supply 400 far from the end wall 302, and the side of the power circuit board 420 of the power supply 400 close to the end wall 302 is closer to the hole 320 than the other side thereof. In this state, the hot air generated by the power supply 400 rises along the inclined direction of the power supply 400 and flows to the outside of the lamp cap 300 through the hole 320, which is beneficial to improving the heat dissipation effect.

Referring to fig. 25, the difference between the lamp cap 300 of fig. 25 and the lamp cap 300 of fig. 22-24 is the pattern of the vertical ribs 330. The shortest distance between the third side 333 of the vertical rib 330 of fig. 25 and the side wall 301 is gradually increased toward the end wall 302 along the axial direction of the side wall 301, that is, the height of the vertical rib 330 with respect to the side wall 301 is gradually increased from the first side 331 to the second side 332 thereof. In this state, the power circuit board 420 of the power supply 400 connected to the third side 333 of the vertical rib 330 is lower on the side close to the end wall 302 than on the other side away from the end wall 302. This design facilitates the entry of cool air from the outside of the lamp cap 300 into the inner space of the lamp cap 300 through the holes 320, and facilitates the exchange of cool and hot air.

Referring to fig. 26, the difference between the lamp cap 300 of fig. 26 and the lamp cap 300 of fig. 22-24 is the configuration of the vertical rib 330, and in addition, the power supply 400 of fig. 26 further includes a power circuit board 420. In various embodiments, the power supply 400 may further include a power module disposed on the power circuit board 420 or may include an electronic component 430 and one or more heat dissipation components or driving modules 440 disposed on the power circuit board 420. In various embodiments, the power supply 400 may be of a modular type (i.e., the power circuit board 420 and the electronic components are integrated).

As shown in fig. 26, in the present embodiment, the power supply 400 further includes an electronic component 430 and a heat dissipation component or a driving module 440 disposed on the power circuit board 420. Specifically, the power circuit board 420 includes a first surface 421 and a second surface 422 opposite to each other, the electronic component 430 and the heat dissipation component or the driving module 440 are disposed on the first surface 421, and the second surface 422 and the third side 333 of the vertical rib 330 are connected to each other. In the present embodiment, the height of the vertical rib 330 relative to the sidewall 301 is maintained to be uniform from the first side 331 to the second side 332, and accordingly, the power circuit board 420 connected to the third side 333 is in a horizontal state rather than an inclined state. The heat dissipation element or driving module 440 may be a heat dissipation element, an inductor, a transistor, or an integrated circuit, and the heat dissipation element or driving module 440 is close to the hole 320. In addition, the vertical rib 330 maintains a certain distance between the second surface 422 of the power circuit board 420 and the sidewall 301, and the extending direction of the vertical rib 330 is toward the hole 320. Thus, a space for flowing gas is maintained between the power source 400 and the sidewall 301, and the hot gas is easily flowed to the outside through the hole 320.

Referring to fig. 27, 28 and 29, fig. 27 is a view of the base 300 looking in a direction substantially horizontal to the axial direction of the base 300, fig. 28 is a radial cross-sectional view of fig. 27, and fig. 29 is a partial axial cross-sectional view of fig. 27 in the direction of C-C'. The difference between fig. 27-29 and fig. 26 is that the light head 300 of fig. 27-29 also includes two horizontal ribs 340, and the power supply 400 of fig. 27-29 is in a modular configuration.

As mentioned above, the opening of the hole 320 is arcuate, and the size and the position of the hole 320 correspond to the two vertical ribs 330, specifically, the projection of the two vertical ribs 330 is located inside the projection of the hole 320 on the axial projection plane of the sidewall 301, in other words, as shown in fig. 27, when looking into the hole 320 along the axial direction of the lamp cap 300, it can be seen that the two vertical ribs 330 are located within the opening of the hole 320. In this way, the space between the two vertical ribs 330 and the power supply 400 for the air to flow corresponds to the hole 320, which is favorable for improving the heat dissipation effect.

In the present embodiment, as shown in fig. 27 to 29, two horizontal ribs 340 are provided on the inner side wall surface of the side wall 301, and the two horizontal ribs 340 are spaced apart from each other and extend in the axial direction of the side wall 301. Each horizontal rib 340 has a long and flat shape, and the two horizontal ribs 340 are opposite and symmetrical to each other. The two horizontal ribs 340 correspond to the two vertical ribs 330, respectively, and the power source 400 is sandwiched between the vertical ribs 330 and the horizontal ribs 340. That is, one side of the power circuit board 420 of the power supply 400 is connected to the vertical rib 330, and the other side of the power circuit board 420 of the power supply 400 is connected to the horizontal rib 340. The vertical ribs 330 and the horizontal ribs 340 cooperate with each other to more firmly hold and fix the power circuit board 420 of the power supply 400.

Referring to fig. 30, the difference between fig. 30 and fig. 29 is that the horizontal rib 340 of fig. 29 is a whole piece, and the horizontal rib 340 of fig. 30 has a broken part. Specifically, the horizontal rib 340 of fig. 30 includes a first rib portion 341, a second rib portion 342, and a cut-off 343, and the cut-off 343 is located between the first rib portion 341 and the second rib portion 342, that is, the first rib portion 341 and the second rib portion 342 are spaced apart from each other by the cut-off 343. The break opening 343 allows air to flow, which is beneficial to improving the heat dissipation effect.

In addition, fig. 30 differs from fig. 29 in that the base 300 of fig. 30 further includes a stopper plate 350, the stopper plate 350 is provided on an inner side wall surface of the side wall 301, and the stopper plate 350 and the end wall 302 are spaced from each other in the axial direction of the side wall 301. Wherein a side of the power circuit board 420 of the power supply 400 facing the end wall 302 contacts the stopper plate 350. Through the stop plate 350, a gap can be maintained between the power circuit board 420 of the power supply 400 and the end wall 302, and the gap can allow air to flow, which is beneficial to improving the heat dissipation effect.

Referring to fig. 31, the difference between fig. 31 and fig. 29 is that the horizontal rib 340 of fig. 29 is a whole piece, and the horizontal rib 340 of fig. 31 has an opening. Specifically, each horizontal rib 340 of fig. 31 includes a plurality of baffle holes 344, the baffle holes 344 extending through the horizontal rib 340 and being arranged on the horizontal rib 340. The flow guiding holes 344 allow air to flow, which is beneficial to improving the heat dissipation effect.

Referring to fig. 32, the difference between fig. 32 and fig. 1-4 lies in the relative relationship between the LED lamp panel 200 and the power circuit board 420 of the power supply 400. The plane on which the LED lamp panel 200 of fig. 1-4 is located and the plane on which the power supply 400 is located are substantially parallel to each other, and the plane on which the LED lamp panel 200 of fig. 32 is located and the plane on which the power supply circuit board 420 of the power supply 400 is located are not parallel to each other. Specifically, as shown in fig. 32, the LED lamp panel 200 is located on a first plane P1, the power circuit board 420 of the power supply 400 is located on a second plane P2, the first plane P1 and the second plane P2 are substantially parallel to the axial direction of the lamp tube 100, an angle θ 2 is included between the first plane P1 and the second plane P2, and the angle θ 2 is greater than 0 degree and less than or equal to 90 degrees. In other words, when the axis of the lamp tube 100 is taken as the rotation center, the rotation angle of the power circuit board 420 of the power supply 400 relative to the LED lamp panel 200 is the angle θ 2, and by the structure that the plane on which the LED lamp panel 200 is located and the plane on which the power circuit board 420 of the power supply 400 is located are staggered rather than parallel to each other, when hot air generated by the LED lamp panel 200 and the LED light source 202 flows from the lamp tube 100 to the lamp cap 300, the hot air can smoothly pass through the power supply 400 staggered with the LED lamp panel 200, and further flows to the outside through the hole 320, which is beneficial to improving the heat dissipation effect.

Referring to fig. 33, the difference between fig. 33 and fig. 1-4 is the type of the holes 320. The hole 320 of fig. 33 is located in the center of the end wall 302, but is not so limited. In the assembly process of the LED straight lamp 50, an assembler needs to assemble two bases 300 to both ends of the lamp tube 100. If one of the bases 300 is already assembled to one end of the lamp 100 and the other base 300 is being assembled to the other end of the lamp 100, the gas existing in the inner spaces of the lamp 100 and the base 300 will be compressed to increase the internal pressure because the inner space of the lamp 100 is a closed or nearly closed space. When the internal pressure is increased, the assembler needs to use more strength to assemble the cap 300 to the lamp tube 100, which causes difficulty in assembly. The holes 320 in fig. 33 can be used as pressure releasing holes, so that the gas existing in the inner spaces of the lamp 100 and the lamp cap 300 can be released from the holes 320 in the process of assembling the lamp cap 300 to the lamp 100, so that the internal pressure of the lamp 100 and the lamp cap 300 is kept constant, which is beneficial to the assembly operation of the LED straight lamp 50 and can improve the assembly efficiency. On the other hand, if the lamp cap 300 does not have any hole, the pressure inside the lamp tube 100 and the lamp cap 300 of the LED straight tube lamp 50 becomes negative pressure due to the decrease of temperature, and the hole 320 serving as a pressure release channel allows the external air to flow into the lamp tube 100 and the lamp cap 300 so that the internal pressure of the lamp tube 100 and the lamp cap 300 can be kept constant (equal to the external pressure of the lamp tube 100 and the lamp cap 300), so that the lamp cap 300 can be conveniently detached from the lamp tube 100 during the detachment of the LED straight tube lamp 50.

In addition, when the LED straight lamp 50 operates, the electronic components inside the LED straight lamp 50 generate heat energy, so that the internal temperature of the LED straight lamp 50 is increased. According to the ideal gas equation, when the temperature rises, the product of the gas volume and the pressure inside the LED straight tube lamp 50 increases, but if the gas is enclosed inside the lamp tube 100 and the lamp head 300, this means that the gas volume is fixed, and therefore, as the temperature of the gas rises, the pressure also increases, which means that the electronic components inside the LED straight tube lamp 50 need to be subjected to high temperature and high pressure for a long time when the LED straight tube lamp 50 continues to work, and this will reduce the service life of the electronic components. The holes 320 in fig. 33 have a pressure releasing function, that is, when the temperature of the gas inside the LED straight tube lamp 50 increases, the expanded gas can be released from the holes 320, so as to effectively reduce the pressure inside the LED straight tube lamp 50.

Referring to fig. 34, fig. 34 is a sectional view taken along the direction D-D' of fig. 33, and the difference between fig. 34 and fig. 33 is that the LED straight tube lamp 50 of fig. 34 further includes a light sensor 450 and a circuit safety switch (not shown). In the present embodiment, the optical sensor 450 and the circuit safety switch are disposed on the power circuit board 420 of the power supply 400 and electrically connected to the power circuit board 420 of the power supply 400, but not limited thereto. Moreover, the power source 400 may have a built-in power source, for example, the power source 400 may have a built-in micro battery, so that the power source 400 can also obtain power from the micro battery to supply the light sensor 450 and the circuit safety switch with the operation requirement under the condition that the LED straight lamp 50 is not mounted on the lamp holder. The circuit safety switch is integrated inside the power source 400, and the light sensor 450 is disposed corresponding to the hole 320. The photo sensor 450 is aligned with the aperture 320. In various embodiments, the light sensor 450 may not extend into the hole 320; alternatively, the light sensor 450 may extend into the aperture 320, whereby the light sensor 450 may sense the brightness within the aperture 320 or the ambient brightness outside the aperture 320 but near the end wall 302. The optical sensor 450 generates a corresponding sensing signal according to the sensed brightness, the sensing signal is transmitted to the circuit safety switch, and the circuit safety switch determines whether to turn on or off the circuit of the power supply 400 according to the received sensing signal.

The operation of the light sensor 450 and the circuit safety switch is as follows, but not limited to: when the brightness sensed by the light sensor 450 in any one of the lamp heads 300 is greater than or equal to a specific threshold, the circuit safety switch will open the circuit of the power supply 400; when the brightness sensed by the light sensors 450 in the two light heads 300 is less than a specific threshold, the circuit safety switch turns on the circuit of the power supply 400.

For example, when a user holds the LED straight lamp 50 and prepares to mount the LED straight lamp 50 on the lamp holder 60 (please refer to fig. 19-21), since the lamp caps 300 at both ends of the LED straight lamp 50 are exposed to the environment without being shielded, the brightness sensed by the light sensors 450 in the two lamp caps 300 is greater than a certain threshold, and the circuit of the power supply 400 is turned off by the circuit safety switch. Then, when the user inserts the hollow conductive pin 310 of the lamp cap 300 at one end of the LED straight lamp 50 into the conductive slot 61 at one end of the lamp holder 60, the light sensor 450 of the lamp cap 300 inserted into one end of the lamp holder 60 is shielded by the lamp holder 60, so that the sensed brightness is less than a specific threshold, but the sensed brightness of the light sensor 450 of another lamp cap 300 not inserted into the lamp holder 60 is still greater than the specific threshold, so that the circuit safety switch still keeps the circuit of the power supply 400 open. Therefore, the user does not have the risk of electric shock. Finally, when the user properly installs the LED straight lamp 50 in the lamp socket 60, the lamp caps 300 at two ends of the LED straight lamp 50 are covered by the lamp socket 60, and the brightness sensed by the light sensors 450 in the two lamp caps 300 is less than a specific threshold, in this case, the circuit safety switch will turn on the circuit of the power supply 400, and the power supply 400 will receive the power from the lamp socket 60 and supply the power to the LED lamp panel 200 and the LED light source 202.

According to the photo-sensor 450 and the circuit safety switch of the LED straight lamp 50 of fig. 34, in the case that the hollow conductive pin 310 of the lamp cap 300 at one end of the LED straight lamp 50 is inserted into the conductive groove 61 of the lamp holder 60 and the hollow conductive pin 310 of the lamp cap 300 at the other end is still exposed to the environment, even if the exposed hollow conductive pin 310 is touched by the user, the circuit safety switch automatically opens (or maintains open) the circuit of the power supply 400, so that the user does not have the risk of electric shock. Thereby, the safety of the LED straight lamp 50 in use can be increased.

Referring to fig. 35 to 38, fig. 35 is a schematic view of a connection structure between an LED lamp panel 200 (e.g., a flexible circuit board) and a power circuit board 420 of a power supply 400, and fig. 36 to 38 are schematic views of a connection process between the LED lamp panel 200 and the power circuit board 420 of the power supply 400. In this embodiment, the LED lamp panel 200 and the free portion 210 have the same structure, and the free portion 210 is a portion of the LED lamp panel 200 at two opposite ends for connecting the power circuit board 420. The LED lamp panel 200 is a flexible circuit board, and the LED lamp panel 200 includes a circuit layer 200a and a circuit protection layer 200c stacked one on another.

In one embodiment, the LED light panel 200 includes a flexible circuit board having a plurality of conductive circuit layers and a dielectric layer (not shown) stacked on each other. The circuit layer and the dielectric layer have the same area, or the area of the circuit layer is smaller than that of the dielectric layer. The LED light source 202 is disposed on one surface of the circuit layer, and the dielectric layer is disposed on the other surface of the circuit layer away from the LED light source 202. The circuit layer is electrically connected to a power source 400 to transmit a Direct Current (DC) signal. At this time, the surface of the dielectric layer away from the circuit layer is fixed to the inner circumferential surface of the lamp tube 100 by an adhesive sheet (not shown). The wiring layer may be a metal layer or a power supply layer, which includes wiring, such as copper wiring.

In another embodiment, the outer surface of the wiring layer or the dielectric layer may be covered by a circuit protection layer. The circuit protection layer is formed by ink and has the functions of welding resistance and reflectivity increase. Alternatively, the dielectric layer may be omitted and the circuit layer may be directly bonded to the inner circumferential surface of the lamp tube 100, and the circuit protection layer is coated on the outer surface of the circuit layer. The circuit protection layer is applicable to either one-layer structure or two-layer structure. In some embodiments, the circuit protection layer is disposed on a single side/surface of the LED lamp panel 200, such as the surface with the LED light sources 202. In some embodiments, the flexible circuit board is a layer structure formed by a circuit layer; or may be a two-layer structure formed by a wiring layer and a dielectric layer. Compared with the traditional flexible substrate with a three-layer structure (a dielectric layer is sandwiched between two circuit layers), the flexible circuit flexible board has better flexibility and is easier to bend. Thus, the flexible circuit board of the LED lamp panel 200 can be installed in a lamp tube with a shape conforming to the specification or in a non-tubular lamp tube, and can be suitably installed on the inner surface of the lamp tube 100. In some cases, the flexible circuit board can be tightly fitted on the inner surface of the lamp tube 100. In addition, the flexible circuit soft board with fewer layers can improve heat dissipation and reduce material cost.

In one embodiment, the LED lamp panel 200 includes a flexible circuit board, which sequentially includes a first circuit layer, a dielectric layer and a second circuit layer (not shown). The thickness of the second circuit layer is greater than that of the first circuit layer, and the length of the LED lamp panel 200 is greater than that of the lamp tube 100. The end region of the LED lamp panel 200 extends beyond the end of the lamp tube 100 and is not provided with the LED light source 202 thereon, and the end region of the LED lamp panel 200 is provided with two separated through holes, which are respectively electrically connected to the first circuit layer and the second circuit layer. The two through holes are not communicated with each other to avoid short circuit.

In this case, the second circuit layer has a thicker thickness to support the first circuit layer and the dielectric layer, and the LED lamp panel 200 connected to the inner circumferential surface of the lamp tube 100 is not easily moved or deformed, thereby improving the yield of the product. In addition, the first circuit layer and the second circuit layer are electrically connected with each other, so that the circuit layout of the first circuit layer can extend downwards to the second circuit layer to complete the circuit layout of the whole LED lamp panel 200. Moreover, the circuit layout can be arranged at two layers, the area of each single layer and the width of the LED lamp panel 200 can be reduced, and therefore more LED lamp panels 200 can be placed on the production line to improve the production efficiency. Further, the first circuit layer and the second circuit layer of the end region of the LED lamp panel 200, which is beyond the end of the lamp 100 and is not provided with the LED light source 202, can be used to complete the circuit layout of the power supply 400, so that the power supply 400 can be directly disposed on the flexible circuit board of the LED lamp panel 200.

The surface of the circuit layer 200a away from the circuit protection layer 200c is defined as a first surface 2001, and the surface of the circuit protection layer 200c away from the circuit layer 200a is defined as a second surface 2002, that is, the first surface 2001 and the second surface 2002 are two opposite surfaces of the LED lamp panel 200. The plurality of LED light sources 202 are disposed on the first surface 2001 and electrically connected to the circuit of the circuit layer 200 a. The circuit protection layer 200c has low electrical and thermal conductivity, but has the effect of protecting the circuit. First face 2001 of LED lamp plate 200 has pad b, is used for placing soldering tin g on the pad b, and the welding end of LED lamp plate 200 has breach f. The power circuit board 420 includes a power circuit layer 420a, and the power circuit board 420 defines a first surface 421 and a second surface 422 opposite to each other, and the second surface 422 is located on a side of the power circuit board 420 having the power circuit layer 420 a. The first surface 421 and the second surface 422 of the power circuit board 420 are respectively formed with pads a corresponding to each other, and solder g may be formed on the pads a. As a further optimization in terms of soldering stability and automation processing, in the present embodiment, the LED lamp panel 200 is placed under the power circuit board 420 (refer to the direction of fig. 36), that is, the first surface 2001 of the LED lamp panel 200 is connected to the second surface 422 of the power circuit board 420.

As shown in fig. 37 and 38, when the LED lamp panel 200 and the power circuit board 420 are welded, the circuit protection layer 200c of the LED lamp panel 200 is first placed on the support platform 52 (the second surface 2002 of the LED lamp panel 200 contacts the support platform 52), the pad a of the second surface 422 of the power circuit board 420 is directly and sufficiently contacted with the pad b of the first surface 2001 of the LED lamp panel 200, and then the thermal compression head 51 is pressed on the welding position of the LED lamp panel 200 and the power circuit board 420. At this time, the heat of the hot pressing head 51 is directly transferred to the pad b of the first surface 2001 of the LED lamp panel 200 through the pad a of the first surface 421 of the power circuit board 420, and the heat of the hot pressing head 51 is not affected by the circuit protection layer 200c with relatively poor thermal conductivity, so that the efficiency and stability of the welding process of the connection between the pad a and the pad b of the LED lamp panel 200 and the power circuit board 420 are further improved. Meanwhile, the pad b of the first surface 2001 of the LED lamp panel 200 is in contact welding with the pad a of the second surface 422 of the power circuit board 420, and the pad a of the first surface 421 of the power circuit board 420 is connected to the thermal compression head 51. As shown in fig. 37, the power circuit board 420 and the LED lamp panel 200 are completely welded together by the solder g, and the main connection portions of the power circuit board 420, the LED lamp panel 200 and the solder g are located between the virtual lines M and N in fig. 37, and the power circuit board 420, the power circuit layer 420a, the pad a on the second surface 422 of the power circuit board 420, the pad b on the first surface 2001 of the LED lamp panel 200, the circuit layer 200a of the LED lamp panel 200, and the circuit protection layer 200c of the LED lamp panel 200 are sequentially arranged from top to bottom. The power supply circuit board 420 and the LED lamp panel 200 combined structure formed in this order are more stable and firm.

In different embodiments, another circuit protection layer may be further disposed on the first surface 2001 of the circuit layer 200a, that is, the circuit layer 200a may be sandwiched between two circuit protection layers 200c, so that the first surface 2001 of the circuit layer 200a may also be protected by the circuit protection layer 200c, and only a portion of the circuit layer 200a (the portion having the pad b) is exposed for contacting with the pad a of the power circuit board 420. At this time, a portion of the bottom of the LED light source 202 contacts the circuit protection layer 200c on the first surface 2001 of the circuit layer 200a, and another portion contacts the circuit layer 200 a.

In addition, with the design scheme of fig. 35 to 38, after the solder is placed in the circular hole h on the pad a of the power circuit board 420, in the automatic soldering process, when the hot pressing head 51 is automatically pressed down to the power circuit board 420, the solder is pushed into the circular hole h due to the pressure, thereby well meeting the requirement of automatic processing.

The power source may be, among other things, a power conversion module/circuit or a power module, which includes the usual meaning recognized by those skilled in the art for a "power source" term, including circuitry that converts an ac voltage to a dc voltage and powers the LEDs or LED modules. The term "power source" as used herein refers to an external signal from an alternating current power line (AC powerline) or ballast (ballast) to power the LED module. These various terms, such as "power conversion module/circuit" and "power module," may be used in this or future continuous applications to represent a "power source.

It should be noted that, in each embodiment of the present invention, the features of the LED straight lamp and the lamp cap thereof are, for example, "pressure release hole", "photo sensor", "circuit safety switch", "photo sensor aligned with hole", "hole may be inclined", "hole is inclined and has two symmetrical arrangements", "hole is not aligned with inner side wall surface of side wall", "dust screen", "hole opening is circular", "hole opening is long and flat circular arc shape", "two holes of circular arc shape are symmetrical", "two holes of circular arc shape are adjacent to each other", "two short edges of hole opposite are rounded corners", "two short plates of hole opposite are right angle", "circular holes are plural and asymmetrically distributed on end wall", "plural holes use axis of lamp cap as symmetrical center", and, The lamp holder comprises a lamp holder, a plurality of holes, a power circuit board, a plurality of radiating elements, a plurality of driving modules, a plurality of radiating elements and a plurality of holes, wherein the plurality of holes surround the axis of the lamp holder in a point-symmetric mode, the holes are arranged on the side wall, the power circuit board is vertical to the axial direction of the side wall of the lamp holder, the second surface of the power circuit board is in contact with the inner side wall surface of the end wall of the lamp holder and covers the holes, the second surface of the power circuit board is not in contact with the inner side wall surface of the end wall, the power supply comprises the radiating elements or the driving modules, the radiating elements and the holes are approximately sealed in the radial direction of the holes, gaps are formed between the radiating elements and the holes in the radial direction of the holes, the power, The horizontal ribs are provided with holes, the plane where the LED lamp panel is located is not parallel to the plane where the power circuit board is located, the holes are located in the center of the end wall of the lamp cap, and the like, so that any combination of the characteristics can be adopted on the premise of no conflict, and the LED straight tube lamp is used for improving the LED straight tube lamp. And any combination of these features falls within the scope of the present invention. Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An LED straight lamp, characterized in that, LED straight lamp includes:

a lamp tube;

two lamp caps respectively arranged at two opposite ends of the lamp tube;

the power supply is arranged in the one or the two lamp holders and comprises a power supply circuit board; and

wherein, the lamp holder includes:

side walls coaxial with the lamps and connected with each other;

the hole penetrates through the end wall and is communicated with the inner space of the lamp holder and the outside; an angle is formed between the axial direction of the hole and the axial direction of the side wall, and the angle is an acute angle; the lamp holder is provided with two holes, the two holes are symmetrically arranged with each other, one hole is higher than the axes of the lamp tube and the lamp holder in the vertical direction, and the other hole is lower than the axes of the lamp tube and the lamp holder in the vertical direction;

wherein, the side of the power supply circuit board of the power supply close to the end wall is higher than the side of the power supply circuit board of the power supply far away from the end wall, and the side of the power supply circuit board of the power supply close to the end wall is closer to the hole relative to the other side.

2. The straight LED tube lamp according to claim 1, wherein when said straight LED tube lamp is mounted in a socket, one of said holes is vertically higher than the axial centers of said lamp tube and said base, and the other of said holes is vertically lower than the axial centers of said lamp tube and said base.

3. The LED straight lamp according to claim 1, wherein the lamp head further comprises a dust screen, and the dust screen covers the hole.

4. An LED straight lamp as claimed in claim 1, wherein said lamp head further comprises two vertical ribs, and said power circuit board of said power supply is fixed to the vertical ribs.

5. An LED straight tube lamp as claimed in claim 4, wherein said vertical rib includes a first side, a second side and a third side, said first side and said second side being opposite to each other and said second side being adjacent to said hole with respect to said first side, said third side being remote from said side wall and located between said first side and said second side, said third side being connected to said power circuit board of said power supply.

6. An LED straight lamp as claimed in claim 5, wherein the third side extends at an acute angle to the axial direction of the base so that the power circuit board connected to the power supply of the third side is inclined.

7. The LED straight lamp according to any one of claims 4 to 5, wherein the power circuit board comprises a first face and a second face which are opposed to and parallel to each other, the vertical rib maintains a space between the second face and the side wall of the power circuit board, and the vertical rib extends in a direction toward the hole.

8. The LED straight lamp tube according to claim 1, wherein the LED lamp panel is located on a first plane, the power supply comprises the power supply circuit board, the power supply circuit board of the power supply is located on a second plane, the first plane and the second plane are parallel to an axial direction of the lamp tube, an angle is formed between the first plane and the second plane, and the angle is greater than 0 degree and smaller than or equal to 90 degrees.