CN105937715B

CN105937715B - Lighting device

Info

Publication number: CN105937715B
Application number: CN201610469654.8A
Authority: CN
Inventors: 白坤; 王洪波; 肖一胜; 曹亮
Original assignee: Opple Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd
Priority date: 2016-06-23
Filing date: 2016-06-23
Publication date: 2023-06-30
Anticipated expiration: 2036-06-23
Also published as: EP3462077B1; WO2017219811A1; EP3462077A4; CN105937715A; EP3462077A1

Abstract

The invention discloses a lighting device, which comprises a shell, an optical element connected with the shell, a containing cavity formed by the cooperation of the shell and the optical element, a light source component and a driving power component which are positioned in the containing cavity, and a channel which is positioned in the containing cavity and penetrates through the shell and the optical element, wherein the channel communicates the inside with the outside. The heat emitted by the light source component in the lighting device can be effectively and rapidly radiated through the channel, and a radiating element is not required to be additionally arranged, so that the cost and the weight of the lighting device are reduced.

Description

Lighting device

Technical Field

The invention belongs to the technical field of illumination, and particularly relates to an illumination device.

Background

The current lighting device generally emits illumination light through an electrically driven light source assembly to illuminate an object, and adjusts the lighting effect of the lighting device through driving a power supply assembly to adjust the current supplied to the light source assembly. However, during use of the lighting device, both the light source assembly and the driving power assembly through which current passes generate heat, which may cause a decrease in reliability of the lighting device.

The existing lighting device, especially the high-power lighting device, generally has a heat dissipation structure between the lamp housing and the mask, the heat dissipation structure is mostly made of aluminum alloy, and a plurality of fins are closely arranged on the heat dissipation structure, so that the structure is complex and the weight is large. The heat radiation structure is additionally arranged to reduce the temperature of the whole lamp when the high-power lighting device emits light, so that the weight of the whole lamp is increased, and the cost of the lamp is increased.

Disclosure of Invention

The invention aims to solve the problems and provide the lighting device which is light in weight and good in heat dissipation effect.

In order to achieve the above object, the present invention provides a lighting device, which includes a housing, an optical element connected to the housing, a housing cavity formed by the housing and the optical element, a light source assembly and a driving power assembly disposed in the housing cavity, and a channel disposed in the housing cavity and penetrating the housing and the optical element, wherein the channel communicates the interior thereof with the exterior.

Further, the channel comprises a pipeline positioned in the accommodating cavity, the light source assembly comprises a light source, and the light source is arranged on the outer wall of the pipeline.

Further, the light source assembly includes a base plate connected to the light source, the base plate constituting part of the outer wall of the duct.

Further, the driving power supply component and the light source component are integrally arranged on the substrate or are separately arranged in the shell.

Further, a first opening is formed in the optical element, a pipeline is formed around the light source assembly, a first port is formed in the shell, and the pipeline is respectively communicated with the first port and the first opening to form the heat dissipation channel.

Further, the maximum outer diameter of the first port is greater than the maximum outer diameter of the first opening.

Further, the first ports are arc-shaped, and the first ports are arranged in a ring shape.

Further, the lighting device further comprises a guide plate, the guide plate is arranged between the shell and the light source assembly, a second through hole is formed in the guide plate, and the second through hole is communicated with the pipeline and the first port.

Further, the light source assembly comprises a first substrate, a plurality of second substrates clamped on the first substrate, and a light source arranged on the second substrates.

Further, the first substrate and the optical element enclose an optical cavity forming a light source.

Further, the second substrate is vertically clamped with the first substrate, a plurality of second substrates enclose the pipeline, and the light source is arranged on the outer side of the pipeline.

Further, the light sources are vertically arranged on the second substrate.

Further, the lighting device further comprises a fixing ring, the fixing ring is clamped at one end of the second substrate extending to the optical element, a plurality of grids are formed on the fixing ring, and the grids are communicated with the pipeline and the first channel.

Further, the light source component and the driving power component are arranged in a split mode, and the driving power component is fixed in the shell and is electrically connected with the light source component.

Further, the optical element is a lens or a diffusing mask.

Further, the lighting device further comprises a lamp cap, and the lamp cap is arranged at the other end of the shell.

Compared with the prior art, the illuminating device is provided with the channel penetrating through the shell and the optical element, the inside of the channel is communicated with the outside, and convection between the outside air and the inside air of the illuminating device can be realized by utilizing the channel, so that heat emitted by the light source component and the driving power supply component in the illuminating device can be effectively and rapidly radiated through the channel, a radiating element is not required to be additionally arranged, and the cost and the weight of the illuminating device are reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic perspective assembly view of a lighting device according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of the other angle of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is an exploded view of fig. 1.

Fig. 5 is an exploded view of fig. 2.

Fig. 6 is a schematic diagram of an optical element in a lighting device according to a preferred embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view taken along line A-A in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Fig. 1 to 7 show a lighting device 100 according to an embodiment of the invention, which is a high-power bulb lamp. The lighting device 100 includes a housing 1, an optical element 2 connected to one end of the housing 1 in a mounting direction (in the embodiment of the present invention, the height direction or the up-down direction of the lighting device 100), and a base 3 connected to the other end of the housing 1. The housing 1 and the optical element 2 are connected to form a housing cavity 7, and the housing cavity 7 houses the light source assembly 4, the driving power assembly 5 electrically connected with the light source assembly 4, and the deflector 6. The lighting device 100 is provided with a plurality of channels 8 communicating the inside with the outside, wherein each channel 8 penetrates through the optical element 2, the light source assembly 4, the deflector 6 and the housing 1. The above-described passage 8 can realize communication between the air outside the lighting device 100 and the air inside the lighting device 100. The lighting device 100 may be a high-power LED lamp for indoor lighting or industrial and mining lighting, which may be installed on a ceiling or the like, and the lamp cap 3 is electrically connected to the internal driving power assembly 5 and electrically connects the lighting device 100 to the mains.

The following describes each element and the connection relationship between the elements in the lighting device 100 according to the embodiment of the present invention.

Referring to fig. 1 to 7, the housing 1 is in a cap shape, is integrally formed of an insulating material, and includes a semicircular main body 110 and a connection portion 120 at the top of the main body, and the connection portion 120 is used for being combined with the lamp cap 3. In a preferred embodiment of the present invention, the base 3 and the connecting portion 120 are screwed by respective female and male screws. In other preferred embodiments, the lamp cap 3 may also be integrally formed with the housing 1, such as by over-molding. A plurality of first ports 11 are formed on the outer circumferential wall of the housing 1, and a space inside the housing 1 can communicate with the outside of the lighting device 100 through the first ports 11. The first ports 11 are arc-shaped, and the plurality of first ports 11 are arranged on the outer peripheral wall of the main body 110 in a ring shape, and are arranged in two concentric rings, so that the space inside the housing 1 is enhanced to communicate with the outside of the lighting device 100. In other embodiments, the first ports 11 may be arranged in a single ring or multiple rings, and the first ports 11 may be arranged in other shapes and other forms. The inner surface of the side wall of the main body 110 of the shell 1 is convexly provided with a plurality of positioning columns 12 and first clamping grooves 13 for positioning the light source component 4 and the guide plate 6, and a plurality of first ribs 14 and second ribs 15 for connecting with the optical element 2 and positioning the guide plate 6. The positioning columns 12 are arranged between the first ports 11 at intervals and extend in a strip shape along the installation direction, and first positioning holes 121 are formed in the positioning columns 12. The first slot 13 is located at a height Yu Dingwei of the post 12 and adjacent to the connector 120. The first ribs 14 are disposed inside and spaced apart along the lower end edge of the main body 110, and the second ribs 15 are disposed at intervals in a bar-shaped structure extending in the mounting direction.

The optical element 2 is a hollow oblong bulb, which is integrally molded from an insulating material such as plastic. One end of the optical element 2 connected with the shell 1 is convexly provided with a circle of clamping part 21, and the clamping part 21 is in buckling connection with the first convex rib 14. In other preferred embodiments, the snap-fit connection of the optical element 2 and the housing 1 may be interchanged. The other end of the optical element 2 is a substantially flat end 220 having a thickness that is connected to the other end of the oval sidewall of the optical element 2 with a tapered outer diameter. The first openings 22 are spaced apart from the inner surface of the end 220, and thus the flow guide 23 is formed, and in the preferred embodiment of the present invention, the flow guide 23 is formed of ribs 231 spaced apart between the adjacent first openings 22. Through the first opening 22, the space inside the housing 1 may communicate with the outside of the lighting device 100. The first openings 22 are triangular pillars, and a plurality of first openings 22 are arranged in a circumferential array at the end 220 and are arranged in a polygon. The maximum outside diameter dimension formed by the first opening 22 is smaller than the maximum outside diameter dimension formed by the first port 11. In other embodiments, the first openings 22 may have other shapes and arrangements. The optical element 2 may be a TIR lens, a COB lens, a blister-type reticle, or a combination of a lens and a blister, and may be configured in a ring shape for a ring-shaped light source.

As shown in fig. 4 and 5, the light source assembly 4 includes a circular first substrate 41 formed to extend along a horizontal plane perpendicular to the mounting direction, a plurality of second substrates 42 engaged with the first substrate 41 and extending along the mounting direction, a light source 43 provided on the second substrate 42, and a fixing ring 45 fixing the second substrates 42. The second substrate 42 is mainly fixed to the first substrate 41 and the fixing ring 45 in the up-down direction. The first substrate 41 is circular, and the first substrate 41 and the optical element 2 enclose an optical cavity (not shown) that accommodates the light source 43. The first substrate 41 is provided with two second positioning holes 411 for positioning, and a first through hole 412 for clamping the second substrate 42 and arranged in the middle of the first substrate 41, which is in a polygonal configuration. The light source 43 may be provided at a free position in the horizontal plane extending direction of the first substrate 41. In the embodiment of the invention, six second substrates 42 are provided, the second substrates 42 are clamped in clamping grooves (not shown) in the first through holes 412 and provided with a first portion 421 extending beyond the first through holes 412 and a second portion 422 provided with the light source 43, and the side wall of the extending end of the second portion 422 is attached to the side wall of the first opening 22 of the optical element 2, namely clamped in the first opening 22. The second substrate 42 is perpendicular to the first substrate 41, and encloses a hexagonal pipe 44, which is used as a hollow heat dissipation channel, and the light source is located outside the pipe 44. In this embodiment, the light source 43 adopts LED light sources, and each second substrate 42 is provided with a group of vertically arranged LED light emitting units 431, where the LED light emitting units 431 may emit any one of white light (W), red light (R), blue light (B) or green light (G). In other embodiments, other light sources such as TL may be used as the light source.

The fixing ring 45 is clamped to the extending end of the second substrate 42 extending toward the optical element 2 and is disposed on the inner surface of the end of the optical element 2, for fixing the second substrate 42. In this embodiment, the fixing ring 45 is made of plastic material, and has a hexagonal shape, and six grids 451 are formed inside the hexagonal shape, and the grids 451 are in communication with the first opening 22 and the pipe 44. In other embodiments, the securing ring 45 may be any other shape.

The driving power supply assembly 5 includes several components including, but not limited to, an LED driving controller chip, a rectifying chip, a resistor, a capacitor, a fuse, a coil, etc., and the driving power supply assembly 5 is electrically connected to the light source assembly 4 and integrally disposed, and is respectively mounted on two sides of the first substrate 41. In other embodiments, the driving power assembly 5 and the light source assembly 4 may be disposed on the same side of the first substrate 41, or the driving power assembly 5 may be disposed around the outer side of the second substrate 42, or the driving power assembly 5 and the light source assembly 4 may be separately disposed and respectively fixed in the housing 1.

The deflector 6 is circular, is arranged between the shell 1 and the light source assembly 4, and is positioned on the shell 1. The baffle 6 is provided with a polygonal second through hole 61, and the second through hole 61 communicates with the pipe 44 and the first port 11. The second through hole 61 is provided with a plurality of second clamping grooves 62 which are clamped with the second substrate 42 and extend beyond the first portion 421 of the first substrate 41, and two third positioning holes 611 for positioning. In the present embodiment, the baffle 6 is made of an insulating material such as plastic.

In the lighting device 100, after six second substrates 42 of the light source assembly 4 are clamped through the second clamping grooves 62, the ends of the first portions 421 are accommodated in the first clamping grooves 13 of the housing 1, so as to realize positioning between the light source assembly 4 and the deflector 6 as well as between the light source assembly and the housing 1. The lighting device 100 further includes two screws (not shown), and the screws are used to pass through the second positioning holes 411 of the first substrate 41 and the third positioning holes 611 of the baffle 6 and are accommodated in the first positioning holes 121 of the housing 1, and the first substrate 41 abuts against the plurality of second ribs 15 to form a receiving surface (not shown), so as to fixedly connect the light source assembly 1, the baffle 6 and the housing 1. In other embodiments, other means of attachment may be used, such as adhesive, or snap-fit, or welding.

Referring to fig. 7, the light source 43 and the driving power module 5 are used as the heat source in the lighting device 100 according to the embodiment of the invention, and a plurality of channels 8 are provided to communicate the inside with the outside, so that the heat dissipation of the outside air and the inside air of the lighting device 100 can be realized by using the channels 8. The first opening 22, the conduit 44, the first port 11 form a convective pathway 8. When the lighting fixture 100 works, the first opening 22 is an air inlet, cold air enters and flows through the pipeline 44, and finally flows out of the first port 11 under the action of the deflector 6, and the first port 11 is an air outlet. The light source 43 emits light to generate heat, the air in the channel 8 is heated, the density is reduced, upward buoyancy is generated, and the air passes through the convection channel 8 and rapidly flows out of the air outlet under the action of the guide plate 6. Meanwhile, the driving power supply assembly 5 is located near the air outlet, and the generated heat enables the air at the corresponding position to be rapidly heated, so that the convection effect of the air is enhanced, and the chimney effect is enhanced. The size of the air inlet, the cross section area of the heat dissipation channel, the size of the air outlet and the position of the heating source are reasonably designed, so that the air flow effect is greatly accelerated, the convection effect is enhanced exponentially, and the temperature is reduced by more than 15 ℃. The temperature of the light source 43 and the driving power supply assembly 5 is reduced, improving the reliability and lifetime of the lighting fixture. The channel 8 is defined by the maximum surface area of the second substrate 42, and is sufficiently in contact with heat dissipation.

The lighting device does not additionally have a heat dissipation structure, saves the cost of the heat dissipation structure, and can quickly and effectively dissipate heat through reasonable structural design, thereby solving the problem of difficult heat dissipation of the lamp.

In summary, the lighting device 100 has the characteristic of good heat dissipation effect, so that the service life of the light source assembly 4 in the lighting device 100 is prolonged. On the other hand, the weight of the entire lighting device 100 is reduced because the components are lighter in weight.

While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications may be made within the spirit and principles of the invention.

Claims

1. The lighting device is characterized by comprising a shell, an optical element connected with the shell, a containing cavity formed by the shell and the optical element in a matching way, a light source component and a driving power component which are positioned in the containing cavity, and a channel which is positioned in the containing cavity and penetrates through the shell and the optical element, wherein the channel communicates the inside with the outside;

the light source assembly comprises a first substrate, a plurality of second substrates clamped on the first substrate, and a light source arranged on the second substrates, wherein the plurality of second substrates enclose a pipeline;

the end of the optical element is provided with a first opening;

the shell is provided with a first port, and the pipeline is respectively communicated with the first port and the first opening to form the channel;

the lighting device further comprises a fixing ring, the fixing ring is clamped at one end of the second substrate extending to the optical element and is placed on the inner surface of the end portion of the optical element, a plurality of grids are formed on the fixing ring, and the grids are communicated with the pipeline and the first opening.

2. A lighting device as recited in claim 1, wherein said channel comprises a tube positioned in said receiving cavity, and said light source assembly comprises a light source, said light source being disposed on an outer wall of said tube.

3. A lighting device as recited in claim 2, wherein said drive power supply assembly is integrally or separately disposed with said light source assembly and said drive power supply assembly is disposed within a housing.

4. A lighting device as recited in claim 1, wherein said first port defines a maximum outside diameter dimension that is greater than a maximum outside diameter dimension defined by said first opening.

5. A lighting device as recited in claim 1, wherein said first port is arcuate and a plurality of first ports are arranged in a circular pattern.

6. A lighting device as recited in claim 5, further comprising a baffle, said baffle being disposed between said housing and said light source assembly, said baffle having a second through hole formed therein, said second through hole being in communication with said conduit and said first port.

7. A lighting device as recited in claim 1, wherein said first substrate and said optical element define an optical cavity which forms a light source.

8. A lighting device as recited in claim 7, wherein said second substrate is vertically snapped onto said first substrate, and said light source is disposed outside of said conduit.

9. A lighting device as recited in claim 8, wherein said light sources are vertically aligned on said second substrate.

10. A lighting device as recited in claim 1, wherein said light source assembly and said drive power assembly are separately disposed, and said drive power assembly is secured within said housing and is electrically connected to said light source assembly.

11. A lighting device as recited in claim 1, wherein said optical element is a lens or a diffusing mask.

12. A lighting device as recited in claim 1, further comprising a light head, said light head being disposed at an end of said housing that faces away from said optical element.