CN213177755U - LED filament lamp - Google Patents

Abstract

The utility model provides a LED filament lamp, includes the shell to and locate at least one reflect meter in the shell, reflect meter's center is equipped with LED filament, its characterized in that: the LED filament comprises at least one spiral strip-shaped filament, and a radiator matched with the spiral strip-shaped filament in shape is arranged below the at least one spiral strip-shaped filament. This LED filament lamp not only can utilize LED light emitting component to throw light on, can arrange more LED light emitting component in the finite space of lamp moreover, has also solved LED lighting component's heat dissipation problem better moreover, realizes the illumination of wide angle to because the kind and the number of the LED light emitting component who arranges can be multiple, and then just can realize lighting component's intelligent control through the timesharing control.

Description

LED filament lamp

Technical Field

The utility model relates to a lighting device especially relates to a LED filament lamp.

Background

As a new light source, LEDs have been widely used for household and commercial lighting, and are becoming a common light source in people's life. However, the LED light source has high directivity and high heat generation, and thus, it is difficult to apply the LED light source to a small-sized bulb. In order to obtain all-directional light emission, more LED light emitting elements must be provided, and the more LED light emitting elements, the larger volume is required for heat dissipation, and therefore, the conventional LED light source has a larger volume or lower brightness due to the heat generation limitation and the volume limitation.

Particularly, the existing LED lamp, for example, chinese patent CN104100858A, includes an LED ring light source, which includes a ring substrate, a light source, and a power supply, and is characterized in that: the light source and the power supply are arranged on the annular substrate, the wiring hole is formed in the middle of the annular substrate, and the light source can be integrally packaged by a plurality of LED chips or can be attached to the annular substrate in a multi-LED light source patch mode.

Although such LED lamps can meet basic lighting requirements, they have poor heat dissipation and low illumination brightness. Moreover, the LED light source is single in arrangement, and various electric connection modes and intelligent control functions cannot be selected.

As also disclosed in chinese patent CN108468986A, an LED lamp with a wide irradiation range includes a lamp holder and a lampshade, the lampshade is mounted on the lamp holder, cross bars are disposed on both sides of the lamp holder, a first spring fastener and a second spring fastener are disposed on the cross bars respectively, the first spring fastener and the second spring fastener are both composed of a torsion spring and a pulling block, a spiral portion of the torsion spring is sleeved on the cross bar of the lamp holder, both ends of the torsion spring are located inside the pulling block, the pulling block is sleeved on both ends of the torsion spring, a slot is further disposed on the lamp holder, a power line is disposed in the slot, a pressing block is disposed on the power line, both ends of the pressing block are provided with screws, the pressing block is fixed on the power line through screws, the lampshade includes a lampshade and a lampshade, a lampshade is disposed on the outer side of the lampshade, an arc surface is disposed on the lampshade, the arc surface is, the arc surface is an inclined surface, and the inclination angle is 135 degrees. Because the limitation of the directivity of the LED light source, the illumination angle of the LED lamp is single, and multi-angle illumination cannot be realized, the improvement of the illumination range of the LED lamp can be realized only by the transformation of the outer cover on the shape structure of the outer cover, the manufacturing steps are complex, and the effect on the improvement of the illumination angle is extremely low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a LED filament lamp that heat dispersion is good, light source alternative is wide, the illumination angle is big and can realize intelligent control and multiple colour control is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a LED filament lamp, includes the shell to and locate at least one reflect meter in the shell, reflect meter open-top is used for the light-emitting, reflect meter's bottom center is equipped with LED filament, its characterized in that: the LED filament comprises at least one strip filament, the strip filament is arranged from the center of the reflecting device to gradually incline and rise or gradually incline and fall towards the periphery, and a radiator matched with the strip filament in shape is arranged below the strip filament.

Preferably, the strip-shaped filament is a spiral strip-shaped filament, a straight strip-shaped filament, or a zigzag strip-shaped filament.

Preferably, when the strip-shaped filament is a spiral strip-shaped filament, the spiral strip-shaped filament spirally descends and extends from the center of the reflecting device to the periphery, and the radius of the spiral is gradually increased; or the spiral strip-shaped filament spirally rises and extends from the center of the reflecting device to the periphery, and the radius of the spiral gradually increases.

Preferably, the heat radiator is in a continuous form matched with the strip-shaped filament; or the upper surface of the filament is in a continuous form matched with the strip-shaped filament, and the lower part of the filament is in a hollow structure; or a plurality of discontinuous radiator parts are included, and the lower surface of the strip-shaped filament is fixed with the radiator parts in sequence.

Preferably, the strip-shaped filament comprises a filament substrate and a plurality of LED light-emitting elements arranged on the filament substrate, at least one end of the strip-shaped filament is provided with an electric connector, and the electric connector is connected to the lead and is electrically connected to a driver arranged in the outer shell through the lead.

Preferably, when the number of the strip-shaped filaments is at least two, a connecting piece is arranged at one end of each strip-shaped filament and electrically connected with the at least two strip-shaped filaments, the connecting piece is connected to the lead, and the connecting piece is connected to the filament substrate or the electric connecting piece of the spiral strip-shaped filament.

Preferably, the housing has a partition to divide the housing space into two parts, the first part has an opening and is provided with a reflecting device, the heat sink is fixed on a bottom plate fixed on the bottom of the reflecting device, one end of a lead wire is electrically connected with the LED filament, and the other end of the lead wire penetrates through the bottom and the partition to enter the second part of the housing and is connected with a driver positioned in the second part.

Preferably, an installation mechanism is arranged on the outer side of the shell, and a cover plate is arranged at an opening of the reflection device.

Preferably, the heat sink has a reflective surface.

Preferably, the strip-shaped filament comprises a filament substrate and a plurality of LED light-emitting elements arranged on the filament substrate, the LED light-emitting elements are connected in parallel and/or in series, and transparent medium layers with protection or light-emitting functions are coated on the outer sides of the LED light-emitting elements.

Compared with the prior art, the utility model has the advantages of above-mentioned LED filament lamp not only can utilize LED light emitting component to throw light on, can arrange more LED light emitting component in the finite space of lamp moreover, has also solved LED light emitting component's heat dissipation problem better moreover, realizes the illumination of wide angle to because the kind and the number of the LED light emitting component who arranges can be multiple, and then just can realize lighting element's intelligent control through intelligent control.

Drawings

Fig. 1 is a schematic view of a lamp according to a first embodiment of the present invention.

Fig. 2 is a partial schematic view of a lamp according to a first embodiment of the present invention.

Fig. 3 is a cross-sectional view of a lamp according to a first embodiment of the present invention.

Fig. 4 is a schematic diagram of another embodiment of the heat sink and the LED filament of the present invention.

Fig. 5 is a schematic diagram of another embodiment of the heat sink and LED filament of the present invention.

Fig. 6 is a schematic diagram of another embodiment of the heat sink and LED filament of the present invention.

Fig. 7 is a schematic diagram of another embodiment of the heat sink and LED filament of the present invention.

Fig. 8 is a schematic diagram of another embodiment of the heat sink and LED filament of the present invention.

Fig. 9 is a schematic view of a lamp according to a second embodiment of the present invention.

Fig. 10 is a schematic component view of a lamp according to a second embodiment of the present invention.

Fig. 11 is a schematic view of a lamp according to a third embodiment of the present invention.

Fig. 12 is a schematic component view of a lamp according to a third embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, 2 and 3, which are schematic views of a lamp according to an embodiment of the present invention. The lamp comprises a shell 1, wherein the shell 1 is of a tubular structure with one open end, a reflecting device 2 is arranged in the shell 1, one end of the reflecting device, namely the top of the reflecting device, is provided with an opening for emitting light, and a hollow accommodating space is arranged in the reflecting device and used for accommodating an LED filament 4. Preferably, the reflector 2 is a reflector structure with an inner diameter gradually increasing. The outer side of the housing 1 is further provided with a mounting mechanism 3, as shown in fig. 1, in this embodiment, the mounting mechanism is a torsion spring mechanism, and is used for mounting the lamp holder inside a mounting hole in a wall or a roof. The top opening part of the reflecting device 2 is provided with a cover plate 5, the cover plate 5 can be made of transparent materials or semi-transparent materials such as frosted materials, and if the cover plate is made of semi-transparent materials such as frosted materials, colored materials can be adopted to perform color mixing of light. The inner surface of the reflecting device 2 is provided with a reflecting material, so that light emitted by the filament can be better reflected and scattered. The housing may take the form of the housing of a variety of light fixtures, such as a concealed down light, a surface mounted down light, a PAR light, an MR16 light bulb, and the like.

The other end of reflecting device 2 is the bottom, and its center is equipped with LED filament 4, the LED filament includes at least one strip filament 41, strip filament 41 follows reflecting device's center sets up towards periphery slope decline gradually, or the slope setting that rises gradually, consequently, forms the low or center low, the high toper light emitting area in periphery in center height, periphery respectively. A radiator 6 is arranged below the LED filament 4, the shape of the radiator 6 is matched with that of the LED filament 4, and the radiator 6 is fixedly connected to the bottom of the reflecting device 2.

As shown in fig. 1 to 3, which is one embodiment of the LED filament 4, the LED filament 4 includes at least one strip filament 41, and the strip filament 41 is a spiral strip filament, as shown in fig. 1 to 3, the spiral filament is 3, the spiral strip filament includes a strip filament substrate, and a plurality of LED light emitting elements disposed on the filament substrate, and at least one end of the spiral strip filament is provided with an electrical connector 42 for connecting a lead. The coiled strip filament extends spirally upward from the bottom to the top of the reflector 2, and the radius of the spiral gradually decreases.

As shown in fig. 3, a heat sink 6 matching the shape of the LED filament is provided below the LED filament 4. In this embodiment, the heat sink 6 also spirals upward from the bottom of the reflector 2 toward the top, and the radius of the spiral gradually decreases. The upper surface of the heat sink 6 is a continuous surface, and the bottom of the spiral strip-shaped filament is attached to the upper surface of the heat sink and fixed. The fixing of the spiral strip-shaped filament and the heat sink 6 may be by adhesive or by screw fixation. In order to better dissipate the reflected light, the heat sink 6 has a reflective surface.

As shown in fig. 4, is another form of the heat sink 6. The bottom of the heat sink 6 is provided with a bottom plate 9, the heat sink 6 may have an upper surface matched with the spiral strip-shaped filament, and a hollow structure is arranged below the heat sink 6, or as shown in fig. 4, the heat sink 6 includes a plurality of discontinuous heat sink components, and the lower surface of the spiral strip-shaped filament is sequentially fixed with the plurality of heat sink components. The finally formed LED filament is still in a spiral shape, in a form of a spiral descending from the center of the reflecting means 2 to the outer periphery, with a radius of the spiral gradually increasing, that is, in a form of a spiral ascending from the bottom of the reflecting means 2 to the top, and with a radius of the spiral gradually decreasing.

Alternatively, as shown in fig. 5, another arrangement of the filament and heat sink in the lamp is provided. In this manner, the helically shaped strip filament extends spirally upward from the center of the reflecting device 2 toward the outer periphery, and the radius of the spiral gradually increases, that is, the helically shaped strip filament extends spirally upward from the bottom of the reflecting device 2 toward the top, and the radius of the spiral gradually increases. The heat sink 6 is continuous as shown in fig. 5, and spirally rises from the center toward the outer periphery. Or, the heat sink 6 may also be in a discontinuous or hollow form, so that the light-emitting angle range of the spiral strip-shaped filament can be maximized without shielding.

As shown in fig. 6, another embodiment of the LED filament and the heat sink in the LED filament lamp is shown, in this embodiment, the LED filament 4 includes a plurality of strip filaments 41, the strip filaments 41 are straight filaments, the strip filaments 41 are each obliquely arranged from the center of the reflector 2 to the periphery, and are provided in a scattering shape, that is, the strip filaments 41 are obliquely arranged from the bottom of the reflector to the open end, and the outer diameter of the whole LED filament 4 is gradually reduced, as can be understood by those skilled in the art, the strip filaments 41 may be uniformly distributed or non-uniformly distributed. Accordingly, the heat sink 6 in this embodiment is a plurality of separate heat sink members having inclined upper surfaces that match the filament strip 41, each heat sink member being in the form of a sheet, the upper surfaces of the heat sink members gradually decreasing from the center toward the outer periphery; of course, it will be understood by those skilled in the art that the heat sink 6 may be a continuous part having a conical outer surface with a high center and a low periphery, and the straight strip-shaped filament 41 is disposed on the conical outer surface. The heat sink 6 is fixed to the base plate 9. Of course, those skilled in the art will also understand that the strip-shaped filament 41 in this embodiment may be arranged obliquely upward from the center of the reflector 2 toward the outer periphery, that is, obliquely upward from the bottom of the reflector toward the open end toward the outer side, the outer diameter of the whole LED filament is gradually enlarged, and the plurality of strip-shaped filaments 41 are in a radial form.

As shown in fig. 7, another embodiment of the LED filament and the heat sink in the LED filament lamp is shown, in which the LED filament 4 includes three strip filaments 41, the strip filaments 41 are folded strip filaments, the folded strip filaments are gradually and obliquely arranged downward from the center of the reflector 2 to the periphery, and the heat sink 6 includes several heat sink components having an oblique upper surface matched with the folded strip filaments. The heat sink 6 is fixed to the base plate 9.

As shown in fig. 8, in another embodiment of the LED filament and the heat sink, the LED filament includes a plurality of strip filaments 41, each strip filament 41 has an irregular shape that is bent back and forth, the strip filaments 41 are gradually inclined downward from the center of the reflector 2 to the outer periphery to form a conical light emitter with a high middle part and a low outer periphery, and the heat sink 6 below the strip filaments 41 has a shape that matches the strip filament 41 and also has an irregular bent shape. The bottom end of the heat sink 6 is fixed on the bottom plate 9, and the bottom plate 9 is fixed at the bottom end of the reflection device 2.

Of course, it will be understood by those skilled in the art that the strip-shaped filament 41 may have other irregular curved shapes, such as an irregular reciprocating curved strip as shown in fig. 8, or may have regular curved shapes, such as a wave shape or other regular curved shapes.

The strip-shaped filament 41 includes a filament substrate and a plurality of LED light emitting elements disposed on the filament substrate. The plurality of LED light-emitting elements can be connected in parallel or in series, the material of the filament substrate is not limited to metal, organic glass, PVC, plastic, sapphire, ceramic and silica gel, and can be one of the materials, or the materials can be made by splicing and/or nesting, and the filament substrate can also be directly PCB or FPCB and the like. The LED light-emitting element can be an LED chip, or an LED lamp bead or other packaged LED light-emitting units, and the LED chip can be a vertical chip, a horizontal chip, a white light chip or a flip chip. And the LED luminous elements on the filament substrate can be fixed on the filament substrate by transparent adhesive, conductive adhesive such as silica gel, modified resin, epoxy resin, silver adhesive or copper adhesive, and then the LED luminous elements can be connected in series and/or in parallel through chip connecting wires arranged on the filament substrate or circuits reserved on the filament substrate. The outer side of the LED light-emitting element can be coated with a transparent medium layer with a protection or light-emitting function, and the material of the transparent medium layer is one or a combination of more of silica gel, epoxy resin glue and LED light-emitting powder glue.

The edges of the filament substrate may be the same curve or broken line, or may be wavy line, or irregular line, such as a partial broken line and a partial curve. The width of the filament substrate may gradually increase or gradually decrease from the first end to the second end, that is, the width of the filament substrate gradually changes, although those skilled in the art will also understand that the width of the filament substrate may also be kept consistent all the time.

When the number of the strip-shaped filaments 41 is at least two, a connecting member 7 is further disposed at one end of the strip-shaped filament 41, as shown in fig. 3, the connecting member 7 is located at the top of the LED filament and is used for electrically connecting the at least two strip-shaped filaments 41 as shown in the figure, and the connecting member 7 may be directly connected to the electrical connecting member 42, or may be directly connected to the filament substrate without the electrical connecting member 42. The ends of the strip-shaped filament 41 may be connected to the lead wires 8 by means of electrical connections 42 and/or connections 7, or may be directly connected to the lead wires 8, the lead wires 8 being electrically connected to a driver in the bottom of the envelope 1 of the lamp and connected to an external power supply via the driver.

Preferably, as shown in fig. 3, the envelope 1 has a partition 11 to divide the envelope space into two parts, the first part has an opening and is provided with the reflecting means 2, the heat sink 6 is fixed on a bottom plate 9, the bottom plate 9 is fixed on the bottom of the reflecting means 2, one end of a lead 8 is connected to the LED filament, and the other end passes through the bottom plate and the partition 11 into the second part of the envelope 1 to be connected to a driver located in the second part of the envelope 1.

As shown in fig. 9 and 10, for the schematic view of the second embodiment of the present invention, the mounting mechanism 3 on the lamp housing 1 in this embodiment is a threaded structure, and the shape of the housing 1 is different from that in the first embodiment, a reflection device 2 is disposed in the housing 1, and an LED filament 4 and a heat sink 6 are disposed in the reflection device 2.

As shown in fig. 11 and 12, for a third schematic view of the embodiment of the present invention, in this embodiment, three reflection devices 2 are disposed in the housing 1, and an LED filament 4 and a heat sink 6 are disposed in each reflection device 2. The heat sink and the LED filament 4 may be in any form described above.

Above-mentioned LED filament lamp not only can utilize the LED component to throw light on, can arrange more LED lighting element in the finite space of lamp, has adopted the radiator that laminates mutually with the filament and match in addition, has also solved LED lighting element's heat dissipation problem better, realizes the illumination of wide angle to because the kind and the number of the LED lighting element who arranges can be multiple, and then just can realize lighting element's intelligent control through the timesharing control.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a LED filament lamp, includes shell (1) to and locate at least one reflect meter (2) in the shell, reflect meter (2) open-top is used for the light-emitting, the bottom center of reflect meter (2) is equipped with LED filament (4), its characterized in that: the LED filament (4) comprises at least one strip filament (41), the strip filament (41) is arranged from the center of the reflecting device (2) to gradually incline and rise or gradually incline and fall towards the periphery, and a radiator (6) matched with the strip filament (41) in shape is arranged below the strip filament (41).

2. The LED filament lamp of claim 1, wherein: the strip-shaped filament (41) is a spiral strip-shaped filament, a straight strip-shaped filament or a broken-line strip-shaped filament.

3. The LED filament lamp of claim 2, wherein: when the strip-shaped filament (41) is a spiral strip-shaped filament, the spiral strip-shaped filament spirally descends and extends from the center of the reflecting device (2) to the periphery, and the radius of the spiral is gradually increased; or the spiral strip-shaped filament spirally rises and extends from the center of the reflecting device (2) to the periphery, and the radius of the spiral gradually increases.

4. The LED filament lamp of claim 1, 2 or 3 wherein: the radiator (6) is in a continuous form matched with the strip-shaped filament (41); or the upper surface of the filament is in a continuous form matched with the strip-shaped filament (41), and the lower part of the filament is in a hollow structure; or comprises a plurality of discontinuous radiator parts, and the lower surface of the strip-shaped filament (41) is fixed with the plurality of radiator parts in sequence.

5. The LED filament lamp of claim 1, wherein: the strip-shaped filament (41) comprises a filament substrate and a plurality of LED light-emitting elements arranged on the filament substrate, wherein at least one end of the strip-shaped filament (41) is provided with an electric connecting piece (42), and the electric connecting piece (42) is connected to a lead (8) and is electrically connected to a driver arranged in the shell (1) through the lead.

6. The LED filament lamp of claim 5, wherein: when strip filament (41) are two at least, strip filament (41) one end is equipped with connecting piece (7) and all is connected with two at least strip filament (41) electricity, and connecting piece (7) are connected to lead wire (8), connecting piece (7) are connected to the filament base plate or electric connector (42) of strip filament (41).

7. The LED filament lamp of claim 1, wherein: the shell (1) is provided with a partition plate (11) to divide the shell space into two parts, the first part is provided with an opening and is provided with a reflecting device (2), the radiator (6) is fixed on a bottom plate (9), the bottom plate (9) is fixed at the bottom of the reflecting device (2), one end of a lead (8) is electrically connected with the LED filament (4), and the other end of the lead penetrates through the bottom plate (9) and the partition plate (11) to enter the second part of the shell (1) and is connected with a driver positioned in the second part.

8. The LED filament lamp of claim 1, wherein: the outer side of the shell (1) is provided with an installation mechanism (3), and the opening of the reflection device (2) is provided with a cover plate (5).

9. The LED filament lamp of claim 1, wherein: the heat sink (6) has a reflective surface.

10. The LED filament lamp of claim 1, wherein: the strip-shaped filament comprises a filament substrate and a plurality of LED light-emitting elements arranged on the filament substrate, wherein the LED light-emitting elements are mutually connected in parallel and/or in series, and transparent medium layers with protection or light-emitting functions are coated on the outer sides of the LED light-emitting elements.

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