CN106051646B

CN106051646B - Lighting device

Info

Publication number: CN106051646B
Application number: CN201610463893.2A
Authority: CN
Inventors: 程争光; 肖柳华; 白坤; 王洪波
Original assignee: Opple Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd
Priority date: 2016-06-23
Filing date: 2016-06-23
Publication date: 2023-07-28
Anticipated expiration: 2036-06-23
Also published as: DE202017006973U1; EP3447374A4; EP3447374A1; WO2017219772A1; CN106051646A; EP3447374B1

Abstract

The invention discloses a lighting device, which comprises a shell, a heat radiating element arranged at one end of the shell, a light source component configured to be in thermal contact with one end of the heat radiating element, an optical element arranged at the other end of the light source component, and a driving power supply component, wherein the light source component and the shell are respectively positioned at two ends of the heat radiating element, the inside of the lighting device is provided with a plurality of channels communicated with the outside through the external heat radiating element, and the channels penetrate through the shell and the heat radiating element. The heat emitted by the light source component in the lighting device can be effectively and rapidly radiated through the channel. Therefore, the lighting device has the characteristic of good heat dissipation effect, thereby prolonging the service life of the light source component in the lighting device.

Description

Lighting device

Technical Field

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

Background

The temperature of the whole lamp, especially the high-power lamp, is very high after the lamp is lighted and used for a long time, and the service life of the lamp is greatly shortened under the condition that the lamp cannot effectively dissipate heat. Therefore, a heat dissipation structure is generally added between the lamp housing and the face mask of the high-power lamp, the current heat dissipation structure is mostly made of aluminum alloy, a plurality of fins are closely arranged on the current heat dissipation structure, the structure is complex, the weight of the whole lamp is large, the weight of the whole lamp exceeds the weight borne by a lamp cap (such as a standard lamp cap E27 or E40), and a safety hanging chain is additionally required to be assembled on the lighting lamp. The safety hanging chain is connected between the mounting frame and the light source, so that the cost of the high-power lamp is increased, and the light source is inconvenient to replace.

Disclosure of Invention

The invention aims to solve the problems and provide a lighting device with good heat dissipation effect.

In order to achieve the above object, the present invention provides a lighting device, which includes a housing, a heat dissipation element disposed at one end of the housing, a light source assembly configured to thermally contact with one end of the heat dissipation element, an optical element disposed at the other end of the light source assembly, and a driving power assembly electrically connected to the optical element, wherein the light source assembly and the housing are respectively disposed at two ends of the heat dissipation element, and a plurality of channels communicating the interior with the exterior are disposed in the lighting device, and penetrate through the housing and the heat dissipation element.

Further, the lighting device further includes a mask that positions the optical element at the other end of the light source assembly.

Further, a plurality of first through grooves are formed in the shell, a plurality of pipelines are formed in the heat radiating element, a plurality of first openings are formed in the face mask, the pipelines are respectively communicated with the first through grooves and the first openings, and the first through grooves, the pipelines and the first openings form the channels.

Further, the first through groove comprises a first port and a first groove which are communicated, the first port is arranged on the first end face and is communicated with at least one pipeline, and the first groove is formed by concavely arranging the outer surface of the side wall.

Further, a plurality of second through grooves are formed in the shell, and the second through grooves penetrate through the inner surface and the outer surface of the side wall of the shell.

Further, the second through groove comprises at least one second port and a second groove which are communicated, the second port penetrates through the inner surface and the outer surface of the side wall of the shell and is communicated with at least one pipeline, and the second groove is formed by concavely arranging the outer surface of the side wall.

Further, the heat dissipation element is in a circular column shape and comprises an inner ring, an outer ring and a plurality of connecting plates for connecting the inner ring and the outer ring, and the pipeline is formed by encircling the inner ring, the outer ring and the connecting plates.

Further, the light source assembly comprises a substrate and a light source arranged on one side of the substrate, and emergent light of the light source is emitted after being subjected to light homogenizing or light distribution at least through the optical element.

Further, the light sources are annularly arranged.

Further, the lighting device further comprises a soaking plate, and the soaking plate is arranged on the other side of the substrate and is in thermal contact with the heat dissipation element.

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.

Further, the light source component and the driving power component are integrally arranged.

Further, the optical element comprises an edge portion and a central portion, the mask is circumferentially arranged on the edge portion of the optical element, and the central portion of the optical element is convexly arranged on the upper surface of the mask.

Further, the mask is coupled to the vapor chamber.

Further, the heat dissipation element is provided with a first end and a second end which are arranged along the up-down direction, and the shell is fixedly connected with the second end of the heat dissipation element and is attached to the second end.

Further, the heat dissipation element is provided with a first end and a second end which are arranged along the up-down direction, and the light source component is fixedly connected with the first end of the heat dissipation element and is attached to the first end.

Further, the lighting device further comprises a lamp cap, wherein the lamp cap is electrically connected with the driving power supply assembly, and the lighting device is electrically connected to an external power supply.

Compared with the prior art, the external heat dissipation element and the plurality of channels for communicating the inside with the outside are arranged in the lighting device, and convection between the outside air and the inside air of the lighting device can be realized by utilizing the channels, so that heat emitted by the light source component in the lighting device can be effectively and rapidly dissipated through the channels. Therefore, the lighting device has the characteristic of good heat dissipation effect, thereby prolonging the service life of the light source component in the lighting device.

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 fig. 1.

Fig. 3 is an exploded view of the other angle of fig. 1.

Fig. 4 is a schematic view of a housing in a lighting device according to a preferred embodiment of the present invention.

FIG. 5 is a schematic view of the housing of FIG. 4 at another angle

Fig. 6 is a schematic view of a further angle of the housing of fig. 4.

Fig. 7 is a schematic diagram of a heat dissipation element in a lighting device according to a preferred embodiment of the present invention.

Fig. 8 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 3 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, a heat dissipation element 2 disposed at one end of the housing 1, a light source assembly 5 having one end thermally contacted with the heat dissipation element 2, an optical element 6 disposed at the other end of the light source assembly 5, a mask 7 connected to the light source assembly 5 and positioning the optical element 6 at one end of the light source assembly 5, a lamp cap 3 connected to the other end of the housing 1, and a driving power assembly 4 accommodated in the housing 1 and electrically connected to the light source assembly 5. Wherein, the light source component 5 and the shell 1 are respectively positioned at two ends of the heat dissipation element 2. The thermal contact of the heat dissipation element 2 with the light source assembly 5 means that the heat emitted by the light source assembly 5 can be transferred to the heat dissipation element 2, and the heat is emitted by the heat dissipation element 2 to the outside of the lighting device 100, and the medium for heat transfer can be air or other heat conducting substances.

Referring to fig. 8, the lighting device 100 is provided therein with a plurality of passages 8 communicating the inside thereof with the outside. Wherein each channel 8 extends through the housing 1, the heat dissipating element 2 and the mask 7. 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, which may be installed on a ceiling or the like, and the lamp cap 3 is electrically connected to an internal driving power component to electrically connect the lighting device to a commercial power.

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.

As shown in fig. 2, 4 and 5, the case 1 has a cover shape and is integrally formed of an insulating material. The housing 1 is formed with a plurality of first through grooves 11 and a plurality of second through grooves 12. A plurality of first positioning columns 13 for connecting the heat dissipation element 2 and a plurality of second positioning columns 14 for supporting the light source assembly 5 are arranged in the shell 1. One end of the housing 1 has a horizontal end surface, which is fitted to one end of the heat dissipating element 2, and the horizontal end surface of the housing 1 may be defined as a first end surface 15 of the housing 1. The other end of the housing 1 is connected to a lamp cap 3, a screw thread 16 is provided on the outer surface of the other end of the housing 1, and the lamp cap 3 can be screwed to the other end of the housing 1.

Specifically, the first through groove 11 extends from the first end face 15 of the housing 1 to the outer surface of the side wall of the housing 1, and the first through groove 11 communicates with the at least one passage 8. The first through groove 11 includes a first port 111 and a first groove 112 which communicate. The first port 111 is disposed on the first end surface 15, and the first groove 112 is concavely formed by the outer surface of the sidewall. The space inside the housing 1 may communicate with the outside of the lighting device 100 through the first through groove 11.

Specifically, the second through groove 12 penetrates the inner and outer surfaces of the side wall of the housing 1, and the first through groove 12 communicates with the at least one passage 8. The second through groove 12 includes two second ports 121 and a second groove 122, wherein the second ports 121 penetrate through the inner and outer surfaces of the sidewall of the housing 1, the second groove 122 is concavely formed by the outer surface of the sidewall, and the two second ports 121 are respectively formed at two sides of the second groove 122. The communication between the space inside the housing 1 and the space outside the lighting device 100 is further enhanced by the second through groove 12. In other embodiments, a single one of the first through groove and the second through groove may be provided.

As shown in fig. 4, a plurality of first positioning posts 13 are formed inside the housing 1, the top surface of each first positioning post is flush with the first end surface 15, and first positioning holes 131 extending from the top surface to the outer side surface of the housing 1 are formed in the first positioning posts 13. As shown in fig. 5 and 8, a plurality of second positioning columns 14 are disposed inside the housing 1, the top surfaces of the second positioning columns 14 are lower than the first end surface 15, and the top surfaces of the plurality of second positioning columns 14 together form a receiving surface for placing the driving power supply assembly 4. The second positioning column 14 is provided with a second positioning hole 141.

As shown in fig. 3 and 7, the heat dissipation member 2 has a circular cylindrical shape, is made of a metal material having good thermal conductivity such as aluminum, and has an outer diameter flush with the outer diameter of the housing 1. The heat dissipation element 2 has a first end (not labeled) and a second end (not labeled) disposed along an up-down direction, the first end of the heat dissipation element 2 is fixedly connected with the light source assembly 5, and the second end of the heat dissipation element 2 is fixedly connected with the housing 1. The heat dissipation element 2 comprises an inner ring 21 having a circular shape, an outer ring 22 having a circular shape, and a plurality of connection portions 23 extending in the radial direction and connecting the inner ring 21 and the outer ring 22. Specifically, the inner ring 21 and the outer ring 22 are coaxially arranged, and the plurality of connecting portions 23 extend in the vertical direction and are uniformly distributed between the inner ring 21 and the outer ring 22. The shape of the connecting portion 23 is not limited to a straight plate shape, and may be a curved shape or the like. Through the design, a plurality of longitudinally extending pipelines 24 are formed in the radiating element 2, and the pipelines 24 are surrounded by the inner ring 21, the outer ring 22 and the connecting part 23. Further, the connecting portion 23 is provided with a plurality of vertical third positioning holes 231 and fourth positioning holes 232, where the third positioning holes 231 correspond to the first positioning holes 131.

As shown in fig. 2 and 3, the lighting device 100 further includes a plurality of first screws 16, and the first screws 16 penetrate through the first positioning holes 131 of the first positioning posts 13 and are accommodated in the third positioning holes 231, so as to fixedly connect the housing 1 and the heat dissipation element 2. A plurality of vertical protruding strips 25 are arranged on the wall surfaces of the plurality of pipelines 24 of the heat dissipation element 2, and the protruding strips 25 are used for increasing the inner surface area of the heat dissipation element 2 and enhancing the heat dissipation effect. In other embodiments, other means of attachment may be used, such as adhesive, or snap-fit, or welding.

The heat dissipation element 2 is preferably made of aluminum profiles, and for different whole lamp power, luminous flux and photoelectric parameters, the heat dissipation element with required length is cut on an aluminum profile matrix with corresponding diameter, so that the power range from tens of watts to hundreds of watts and the luminous flux range from hundreds of lumens to tens of thousands of lumens can be realized, and the high-power light sources such as the traditional high-power fluorescent lamp, the high-power metal halogen lamp and the like can be well replaced. Meanwhile, one set of aluminum profile die can realize a plurality of lighting devices with different powers, and the product cost is greatly saved.

As shown in fig. 2 and 3, the light source assembly 5 includes a second substrate 51, a light source 52 disposed on one side of the second substrate 51, a soaking plate 53 disposed on the other side of the second substrate 51, the soaking plate 53 thermally contacts the heat dissipating element 2, and the light emitted from the light source 52 is at least homogenized or distributed by the optical element 6 and then emitted. In the embodiment of the invention, the light sources adopt LED light sources and are annularly arranged, and one annular LED light source can be arranged, and a plurality of concentric annular LED light sources can also be arranged. In other embodiments, other light sources such as TL may be used as the light source.

The second substrate 51 may be a printed circuit board, and the second substrate 51 is provided with a plurality of fifth positioning holes 511. The soaking plate 53 is a vacuum cavity with a fine structure on the inner wall, is made of metal with good thermal conductivity such as copper and is used for enhancing heat dissipation, a plurality of sixth positioning holes 531 are formed in the plate surface of the soaking plate 53, and a plurality of seventh positioning holes 532 and a plurality of clamping grooves 533 are further formed in the circumference of the soaking plate 53. The lighting device 100 further includes a plurality of second screws 54, where the second screws 54 pass through the fifth positioning holes 511 and the sixth positioning holes 531 and are received in the fourth positioning holes 232, so as to realize a fixed connection between the light source assembly 5 and the heat dissipation element 2, and the light source assembly 5 is attached to a first end (not labeled) of the heat dissipation element 2. In other embodiments, other means of attachment may be used, such as adhesive, or snap-fit, or welding.

As shown in fig. 2 and 8, the driving power supply assembly 4 includes several components, including but not limited to an LED driving controller chip, a rectifying chip, a resistor, a capacitor, a fuse, a coil, and the like, all mounted on a first substrate 41 of the driving power supply assembly 4, through holes 411 corresponding to the four second positioning posts 14 are formed in the first substrate 41, and the first substrate 41 is disposed on a receiving surface formed by the four second positioning posts 14 in the housing 1. The lighting device 100 further includes four third screws 42, and the third screws 42 are received in the second positioning posts 14 through the through holes 411 to fix the first substrate 41 in the housing 1. In other embodiments, the driving power component 4 and the light source component 5 may be integrally disposed, and the driving power component 4 and the light source component 5 may be disposed on the same surface or different surfaces of the substrate.

As shown in fig. 2 and 3, in the embodiment of the present invention, the optical element 6 is a bulb, which is integrally formed of an insulating material such as plastic, and has a semicircular spherical shape. The optical element 6 includes a light-transmitting portion 61 as a central portion and provided to protrude from the upper surface of the mask 7, and a horizontal edge portion 62 extending outward from one side of the light-transmitting portion 61. The edge portion 62 abuts the second substrate 51 of the light source assembly 5 against the heat dissipation element 2, and the edge portion 62 of the light-transmitting portion 61 is provided with a plurality of notches (not shown in the drawings). In other embodiments, a TIR lens, COB lens, or a bubble-shaped reticle, or a combination of a lens and a bubble may be used as the optical element, and the optical element may be configured to be annular for the annular light source.

As shown in fig. 2, 3 and 8, the mask 7 has a circular ring shape and is disposed around the edge portion 62 of the optical element 6. The face mask 7 includes a horizontal portion 71, and first and second vertical portions 72 and 73 provided on both sides of the horizontal portion 71, and the outer diameter of the face mask 7 is flush with the outer diameter of the heat radiating element 2. The first vertical portion 72 is provided with a plurality of positioning columns 721 and elastic clamping arms 722, the positioning columns 721 can be matched with seventh positioning holes 532 on the soaking plate 53, the elastic clamping arms 722 penetrate through a plurality of notches (not shown in the figure) of the edge portion 62 and clamping grooves 533 arranged at the edge of the soaking plate 53 and are buckled at the edge of the soaking plate 53, so that the combination of the mask 7 and the soaking plate 53 is realized, and the mask 7 and the light source assembly 5 are fixedly connected. The horizontal portion 71 is provided with a plurality of first openings 711, and the first openings 711 are vertically aligned with the first through grooves 11. The duct 24 communicates with the first through groove 11 and the first opening 711, the duct 24, and the first through groove 11 form the passage 8. The air flow outside the lighting device 100 enters through the first opening 711, passes through the pipe 24 of the heat dissipation element 2 via the channel 8, and is discharged from the first port 112 and the second port 122 of the housing 1 to form internal and external convection for effective heat dissipation. In other embodiments, the mask element may be omitted, the structure of the optical element may be adjusted to be flush with the outer diameter of the heat dissipating element 2 and fixedly connected thereto, and the optical element may be provided with a structure that is part of the heat dissipating channel.

In summary, the lighting device 100 of the embodiment of the invention is provided with the plurality of channels 8 for communicating the inside with the outside, and the convection of the outside air and the inside air of the lighting device 100 can be realized by using the channels 8. Referring to fig. 8, the heat dissipation airflow direction is divided into at least two parts: one path aligned in the up-down direction has a faster first flow rate; and the other path, which diffuses into the larger-sized tube 24, has a second flow rate that is slower than the first flow rate and is sufficiently heat-exchangeable with the inner wall of the tube 24. In this way, the heat emitted by the light source assembly 5 in the lighting device 100 can be effectively and rapidly dissipated through the channel 8. Therefore, the lighting device 100 has the characteristic of good heat dissipation effect, thereby prolonging the service life of the light source assembly 5 in the lighting device 100. On the other hand, the heat dissipation element 2 has a simple structure and a light weight, so that the weight of the whole lighting device 100 is reduced, and the light source assembly 5 can be replaced without additionally installing a safety hanging chain, so that the lighting device 100 has the characteristics of convenient assembly and disassembly.

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, a heat radiating element arranged at one end of the shell, a light source component, an optical element and a driving power supply component, wherein one end of the light source component is in thermal contact with the heat radiating element, the optical element is arranged at the other end of the light source component, the driving power supply component is electrically connected with the light source component, the light source component and the shell are respectively positioned at two ends of the heat radiating element, a plurality of channels for communicating the inside with the outside are arranged in the lighting device, the lighting device further comprises a mask, the mask positions the optical element at the other end of the light source component, and a plurality of longitudinally extending pipelines are formed in the heat radiating element; the light source assembly comprises a second substrate, a light source arranged on one side of the second substrate, and the channel sequentially penetrates through the mask, the pipeline of the radiating element and the shell; the front projection part of the channel on the light source assembly, which is positioned on the heat radiating element, falls on the light source assembly, the rest part of the channel falls outside the light source assembly, and the front projection part of the channel on the light source assembly, which is positioned on the shell, falls on the light source assembly, and the rest part of the channel falls outside the light source assembly.

2. A lighting device as recited in claim 1, wherein said housing is formed with a plurality of first through slots, said heat dissipation element is formed with a plurality of conduits therein, said mask is provided with a plurality of first openings, said conduits are respectively in communication with said first through slots and said first openings, and said first through slots, said conduits and said first openings form said channels.

3. A lighting device as recited in claim 2, wherein said housing is provided with a first end surface which contacts an end of said heat dissipation element, said first through slot extending from said first end surface to an exterior surface of a side wall of said housing.

4. A lighting device as recited in claim 3, wherein said first through slot comprises a first port and a first groove which are in communication, said first port being disposed on said first end face and in communication with at least one of said conduits, said first groove being formed by a recess in an outer surface of said sidewall.

5. A lighting device as recited in claim 4, wherein said housing further comprises a plurality of second through slots formed therein, said second through slots extending through inner and outer surfaces of said housing side walls.

6. A lighting device as recited in claim 5, wherein said second through slot comprises at least one second port and a second groove which are in communication, said second port extending through an inner and outer surface of said housing sidewall and being in communication with at least one of said conduits, said second groove being formed by a depression in an outer surface of said sidewall.

7. A lighting device as recited in claim 1, wherein said heat dissipation element is a circular column comprising an inner ring, an outer ring and a plurality of connecting portions connecting said inner ring and said outer ring, said conduit being defined by said inner ring, said outer ring and said connecting portions.

8. A lighting device as recited in claim 1, wherein said light source emits light which is at least homogenized or distributed by an optical element.

9. A lighting device as recited in claim 8, wherein said light sources are arranged in an annular configuration.

10. A lighting device as recited in claim 1, further comprising a soaking plate, said soaking plate being disposed on another side of said second substrate and in thermal contact with said heat dissipating element.

11. A lighting device as recited in claim 1, wherein said light source assembly and said drive power assembly are separately disposed, said drive power assembly being secured within said housing.

12. A lighting device as recited in claim 1, wherein said light source assembly and said drive power assembly are integrally provided.

13. A lighting device as recited in claim 1, wherein said optical element comprises an edge portion and a center portion, said mask being disposed circumferentially about said edge portion of said optical element, said center portion of said optical element being disposed convexly above said mask.

14. A lighting device as recited in claim 1, further comprising a soaking plate, said mask being coupled to said soaking plate.

15. A lighting device as recited in claim 1, wherein said heat dissipation element has a first end and a second end which are disposed in an up-down direction, and said housing is fixedly connected to and attached to said second end of said heat dissipation element.

16. A lighting device as recited in claim 1, wherein said heat dissipating element has a first end and a second end which are disposed in an up-down direction, and said light source assembly is fixedly connected to and attached to said first end of said heat dissipating element.

17. A lighting device as recited in claim 16, wherein said optical element is a lens or a diffusing mask.

18. A lighting device as recited in claim 1, further comprising a lamp cap, said lamp cap being electrically connected to said drive power assembly and electrically connecting said lighting device to an external power source.