CN116146921A

CN116146921A - Lighting device

Info

Publication number: CN116146921A
Application number: CN202111376467.2A
Authority: CN
Inventors: 宋江许; 张清泉; 谢建民
Original assignee: Suzhou Op Lighting Co Ltd
Current assignee: Suzhou Op Lighting Co Ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2023-05-23

Abstract

The invention discloses a lighting device, comprising: the shell is provided with a top wall and a peripheral side wall, and the bottom of the shell is of an open structure; the light-transmitting cover is arranged at the bottom of the shell and seals the open structure, and the light-transmitting cover and the shell jointly enclose an optical cavity; the light source module is arranged in the optical cavity; the heat dissipation assembly comprises a plurality of heat dissipation air channels which are formed on the shell and form convection with the external environment. The heat dissipation assembly is arranged, and a heat dissipation channel which is in convection with the external environment is formed on the shell, so that cooling airflow in the external environment can exchange heat with the shell fully when flowing through the heat dissipation air channel, heat on the shell is taken away, and a good heat dissipation effect is achieved.

Description

Lighting device

Technical Field

The invention relates to the technical field of illumination, in particular to an illumination device.

Background

Conventional lighting devices, such as panel lamps, flat panel lamps, etc., are generally suspended from indoor suspended ceilings or ceilings by means of a suspending structure (such as a chain or a hanger rod) during installation, and of course, ceiling lamps can also be used by being embedded in ceilings by means of a ceiling-mounted structure. The lighting device adopts a lamp panel structure generally, the structure of the lighting device is formed by a disc-shaped shell, a light-transmitting cover, a light source module and a reflector, the light-transmitting cover is connected to the bottom of the shell and encloses an optical cavity together with the shell, the light source module is arranged in the optical cavity, the light source module generally comprises an LED lamp panel, a plurality of LED light-emitting elements are integrally arranged on the LED lamp panel, and the reflector is arranged in the optical cavity and is used for distributing light for the whole LED lamp panel, so that light rays emitted by the LED light-emitting elements on the LED lamp panel can be concentrated. Obviously, this type of lamp generally has the following drawbacks: 1. the light emitted by each LED light-emitting element is divergent, and the plurality of LED light-emitting elements share one reflector, so that the light-gathering effect is general, and the light-transmitting cover is generally made of plastic materials with low transmittance or general light transmittance, so that the illumination effect of the whole lighting device is not ideal. 2. After the light-transmitting cover and the shell are assembled, a gap is usually reserved between the light-transmitting cover and the shell, so that on one hand, the light leakage defect is caused, and on the other hand, mosquitoes, water mist and the like in the air easily permeate through the gap to invade the inside of the lighting device, so that the inner surface of the light-transmitting cover is stained, and even the light source module is damaged. 3. The housing is usually a thin metal shell, and the heat dissipation effect is generally not suitable for a high-power light source module.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a lighting device with better heat dissipation effect.

To this end, the invention provides a lighting device comprising:

the shell is provided with a top wall and a peripheral side wall, and the bottom of the shell is of an open structure;

the light-transmitting cover is arranged at the bottom of the shell and seals the open structure, and the light-transmitting cover and the shell jointly enclose an optical cavity;

the light source module is arranged in the optical cavity;

the heat dissipation assembly comprises a plurality of heat dissipation air channels which are formed on the shell and form convection with the external environment.

Preferably, the heat dissipation assembly comprises a plurality of heat dissipation fins which are arranged on the top wall of the shell and are distributed along the circumferential direction, each heat dissipation fin extends along the radial direction, and a heat dissipation air channel is formed by the space between two adjacent heat dissipation fins.

Preferably, the heat dissipation assembly further comprises at least one heat dissipation fan disposed on the top wall of the housing, the heat dissipation fan being located at an intersection of the plurality of heat dissipation air channels, the heat dissipation fan being configured to: and providing air flow circulating between the external environment and each radiating air duct.

Preferably, the light source module comprises a light source plate and a plurality of light emitting elements integrally arranged on the light source plate.

Preferably, the light distribution unit is arranged in the optical cavity and used for processing the light rays emitted by the light emitting elements.

Preferably, the light distribution unit includes light distribution lenses which are identical in number to and matched with the light emitting elements, and the light distribution lenses are configured to: the light emitted by each light-emitting element is processed by the corresponding light distribution lens.

Preferably, the light distribution lens has an incident portion, an exit portion, and a reflecting portion connected between the incident portion and the exit portion, and is configured to: the light emitted by each light-emitting element enters the corresponding light distribution lens through the incidence part, and is reflected by the reflection part and then emitted from the emission part.

Preferably, the incident portion is provided with a fitting hole adapted to the shape of the light emitting element, the reflecting portion is horn-shaped, and the emitting portion is honeycomb-shaped.

Preferably, the light distribution unit comprises a light distribution support, positioning holes with the same number as the light distribution lenses are formed in the light distribution support, and each light distribution lens is located in the corresponding positioning hole and is clamped between the light distribution support and the light source plate in the height direction of the light distribution lens.

Preferably, the light distribution support and the shell are in screw connection or buckle connection.

Preferably, the light-transmitting cover is made of high-permeability material.

Preferably, the high-transmittance material is made of glass, acrylic or polycarbonate, and the light transmittance is more than 85%.

Preferably, a sealing ring is arranged between the light-transmitting cover and the shell, a circle of embedded part is arranged at the lower end of the peripheral side wall of the shell, and the sealing ring is provided with a groove which extends along the circumferential direction and is embedded with the embedded part.

Preferably, the sealing ring is of hollow structure.

Preferably, the light-transmitting cover is connected with the shell through a face frame, and screw connection, snap connection, riveting or welding are adopted between the face frame and the shell.

Preferably, an annular pressing sheet is arranged between the face frame and the light-transmitting cover.

Preferably, the annular preform is a glass sheet.

Compared with the prior art, the invention has the following beneficial effects:

the heat dissipation assembly is arranged, and a heat dissipation channel which is in convection with the external environment is formed on the shell, so that cooling airflow in the external environment can exchange heat with the shell fully when flowing through the heat dissipation air channel, heat on the shell is taken away, and a good heat dissipation effect is achieved.

Drawings

FIG. 1 is an exploded schematic view of a preferred embodiment consistent with the present invention;

FIG. 2 is an enlarged schematic view of a portion of the portion A shown in FIG. 1;

FIG. 3 is a schematic front view of a preferred embodiment consistent with the present invention;

FIG. 4 is a schematic cross-sectional view of the lighting device shown in FIG. 3;

FIG. 5 is a schematic top view of the lighting device shown in FIG. 3;

FIG. 6 is an enlarged partial schematic view at B shown in FIG. 4;

wherein the reference numerals are as follows:

100. a lighting device;

1. a housing; 10. a heat dissipation assembly; 11. a top wall; 12. a peripheral sidewall; 13. a fitting portion; 14. a heat radiation fin; 15. a heat radiation fan; 16. a heat dissipation air duct;

2. a light-transmitting cover;

3. a light source module; 31. a light source board; 32. a light emitting element;

4. a light distribution unit; 41. a light distribution lens; 411. an incidence part; 412. an emission unit; 413. a reflection section; 414. a fitting hole; 42. a light distribution bracket; 421. positioning holes;

5. a seal ring; 51. a groove; 52. a barb portion;

6. a face frame;

7. annular tabletting;

8. and a driving power supply.

Detailed Description

It is to be understood that, according to the technical solution of the present invention, those skilled in the art may propose various alternative structural modes and implementation modes without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.

The terms of directions such as up, down, front, rear, etc. mentioned in the present specification are defined with respect to the configurations shown in the drawings, and they are relative concepts, so that they may be changed according to the different positions and the different use states thereof. These and other directional terms should not be construed as limiting terms.

As shown in fig. 1, 3 and 5, a lighting device 100 includes a housing 1, a light-transmitting cover 2, a light source module 3 and a light distribution unit 4.

The housing 1 is integrally formed of an aluminum alloy material. Which has a top wall 11 and a peripheral side wall 12, the bottom of the housing 1 being of open construction. The light-transmitting cover 2 is provided at the bottom of the housing 1 and closes the open structure. The light-transmitting cover 2 and the shell 1 together enclose an optical cavity. The light source module 3 is disposed in the optical cavity. Referring to fig. 6, the light source module 3 includes a light source board 31, and a plurality of light emitting elements 32 integrally disposed on the light source board 31. The light emitting elements 32 may be LED beads, and the light distribution unit 4 is disposed in the optical cavity and is used for focusing light emitted by the plurality of light emitting elements 32. The light emitting element 32 may be an LED light bead. The casing 1 is provided with a driving power source 8, the driving power source 8 may be disposed inside or outside the casing 1, and the driving power source 8 is electrically connected to the light source plate 31 through a cable (not shown) passing through the casing 1.

Specifically, as shown in fig. 2, 4, and 6, the light distribution unit 4 includes a plurality of light distribution lenses 41 and a light distribution bracket 42. The light distribution support 42 is connected with the shell 1 by a screw. Of course, in other embodiments, other detachable connection manners, such as a snap connection, may be used between the light distribution bracket 42 and the housing 1. The light distribution bracket 42 is provided with positioning holes 421 in the same number as the light distribution lenses 41, and each light distribution lens 41 is located in the corresponding positioning hole 421 and sandwiched between the light distribution bracket 42 and the light source plate 31 in the height direction thereof.

The light distribution lens 41 is configured to: the light emitted from each light emitting element 32 is focused by the corresponding light distribution lens 41. Specifically, as shown in fig. 2, the light distribution lens 41 has an incident portion 411, an exit portion 412, and a reflection portion 413 connected between the incident portion 411 and the exit portion 412, and the light distribution lens 41 is configured to: the light emitted from each light emitting element 32 enters the corresponding light distribution lens 41 through the incident portion 411, is reflected by the reflecting portion 413, and is emitted from the emitting portion 412. The incident portion 411 has a fitting hole 414 formed therein to fit the shape of the light emitting element 32, the reflecting portion 413 has a horn shape, and the emitting portion 412 has a honeycomb shape. In this way, when the light emitted by the light emitting element 32 reaches the emitting portion 412, the light can be refracted multiple times, so as to increase the light condensing capability of the light, and make the illumination effect of the illumination device better.

In order to further improve the light emitting effect of the lighting device, in this example, the light-transmitting cover 2 is made of a high-transmittance material, such as high-transmittance glass, acryl or polycarbonate, and has a light transmittance of 85% or more. The light-transmitting cover 2 is connected with the shell 1 through a face frame 6, and the face frame 6 is connected with the shell 1 through screws. Of course, in other embodiments, the connection between the bezel 6 and the housing 1 may be other detachable or non-detachable connections, such as a snap connection, an adhesive connection, a rivet connection, or a weld. The annular pressing sheet 7 is arranged between the face frame 6 and the light-transmitting cover 2, so that the light-transmitting cover 2 can be prevented from being damaged due to direct rigid contact between the light-transmitting cover 2 and the face frame 6. The annular pressing piece 7 can be a gasket such as a glass sheet, a plastic sheet, etc.

In order to improve the sealing performance of the lighting device, and to make it waterproof and mosquito-proof, as shown in fig. 1 and 6, a sealing ring 5 is provided between the translucent cover 2 and the housing 1, a circle of engaging portion 13 is provided at the lower end of the peripheral side wall 12 of the housing 1, and the sealing ring 5 has a groove 51 extending along the circumferential direction and engaged with the engaging portion 13. In order to make the sealing ring 5 firmly embedded, the grooves 51 of the sealing ring 5 are provided with barb parts 52 on two opposite inner side walls. In order to increase the contact area between the sealing ring 5 and the light-transmitting cover 2 and improve the sealing performance, the inside of the sealing ring 5 is designed to be a hollow structure. So, sealing washer 5 can compression deformation when using to pack the contact gap between printing opacity cover 2 and the casing 1, waterproof and mosquito-proof worm effect is better.

In order to achieve good heat dissipation of the lighting device 100, the high-power light source module 3 is adapted. As shown in fig. 3 and 5, the heat dissipating assembly 10 includes a plurality of heat dissipating fins 14 disposed on the top wall 11 and the peripheral side wall 12 of the housing 1 and arranged in the circumferential direction, and two heat dissipating fans 15 disposed on the top wall of the housing 1, each heat dissipating fin 14 extending in the radial direction. A heat dissipation air duct 16 for communicating the heat dissipation fan 15 with the external environment to form convection is formed between two adjacent heat dissipation fins 14, the heat dissipation fan 15 is positioned at the junction of the plurality of heat dissipation air ducts 16, and the heat dissipation fan 15 is configured to: providing a circulating air flow between the ambient environment and the respective cooling air ducts 16. Of course, in other embodiments, the heat radiation fins 14 are provided on one of the top wall 11 and the peripheral side wall 12 of the housing 1, and there may be only one or more heat radiation fans. In this way, the heat of the shell 1 is conducted by the radiating fins 14, and the air flow is blown out by the radiating fan 14, so that the cold air flow in the external environment enters the radiating air channels 16 formed between the radiating fins 14, thereby taking away the heat on the radiating fins 14, and the radiating effect is better.

It should be noted that, the lighting device 100 of the present disclosure may be installed on an indoor ceiling as a ceiling lamp by using a ceiling structure existing in the prior art, or may be hung on an indoor suspended ceiling or a ceiling as a ceiling lamp by using a hanging structure, such as a chain or a hanging rod, which is not described herein.

The technical scope of the present application is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present application, and these changes and modifications should all fall within the scope of protection of the present application.

Claims

1. A lighting device, comprising:

the shell (1) is provided with a top wall (11) and a peripheral side wall (12), and the bottom of the shell (1) is of an open structure;

the light-transmitting cover (2) is arranged at the bottom of the shell (1) and seals the open structure, and the light-transmitting cover (2) and the shell (1) jointly enclose an optical cavity;

a light source module (3) arranged in the optical cavity; characterized in that it also comprises;

the heat dissipation assembly (10) comprises a plurality of heat dissipation air channels (16) which are formed on the shell (1) and form convection with the external environment.

2. A lighting device as recited in claim 1, wherein: the heat dissipation assembly (10) comprises a plurality of heat dissipation fins (14) which are arranged on the top wall (11) of the shell (1) and are circumferentially distributed, each heat dissipation fin (14) extends along the radial direction, and a space between two adjacent heat dissipation fins (14) forms the heat dissipation air duct (16).

3. A lighting device as recited in claim 1, wherein: the heat dissipation assembly (10) further comprises at least one heat dissipation fan (15) arranged on the top wall (11) of the shell (1), the heat dissipation fan (15) is positioned at the junction of a plurality of heat dissipation air channels (16), and the heat dissipation fan (15) is configured to: providing an air flow circulating between the external environment and each of the heat dissipation air channels (16).

4. A lighting device as recited in claim 1, wherein: the light source module (3) comprises a light source plate (31) and a plurality of light emitting elements (32) which are integrally arranged on the light source plate (31).

5. A lighting device as recited in claim 4, wherein: the light distribution unit (4) is arranged in the optical cavity and is used for processing light rays emitted by the light emitting elements (32).

6. A lighting device as recited in claim 5, wherein: the light distribution unit (4) comprises light distribution lenses (41) which are consistent in number with the light emitting elements (32) and matched, and the light distribution lenses (41) are configured to: the light emitted from each light emitting element (32) is processed by the corresponding light distribution lens (41).

7. A lighting device as recited in claim 6, wherein: the light distribution lens (41) has an incidence part (411), an emission part (412), and a reflection part (413) connected between the incidence part (411) and the emission part (412), and the light distribution lens (41) is configured to: the light emitted from each light emitting element (32) enters the corresponding light distribution lens (41) through the incidence part (411), and is reflected by the reflection part (413) and then emitted from the emission part (412).

8. A lighting device as recited in claim 7, wherein: the incident part (411) is provided with a fitting hole (414) which is matched with the shape of the light-emitting element (32), the shape of the reflecting part (413) is horn-shaped, and the shape of the emergent part (412) is honeycomb-shaped.

9. A lighting device as recited in claim 6, wherein: the light distribution unit (4) comprises a light distribution support (42), positioning holes (421) with the same number as the light distribution lenses (41) are formed in the light distribution support (42), and each light distribution lens (41) is located in the corresponding positioning hole (421) and is clamped between the light distribution support (42) and the light source plate (31) in the height direction.

10. A lighting device as recited in claim 9, wherein: the light distribution support (42) is in screw connection or buckle connection with the shell (1).

11. A lighting device as recited in claim 1, wherein: the light-transmitting cover (2) is made of high-permeability materials.

12. A lighting device as recited in claim 11, wherein: the high-transmittance material is made of glass, acrylic or polycarbonate, and the light transmittance is more than 85%.

13. A lighting device as recited in claim 1, wherein: a sealing ring (5) is arranged between the light-transmitting cover (2) and the shell (1), a circle of embedded parts (13) are arranged at the lower end of the peripheral side wall (12) of the shell (1),

the seal ring (5) has a groove (51) extending in the circumferential direction and fitted with the fitting portion (13).

14. A lighting device as recited in claim 13, wherein: the sealing ring (5) is of a hollow structure.

15. A lighting device as recited in claim 1, wherein: the light-transmitting cover (2) is connected with the shell (1) through a face frame (6), and screw connection, buckle connection, riveting or welding are adopted between the face frame (6) and the shell (1).

16. A lighting device as recited in claim 15, wherein: an annular pressing sheet (7) is arranged between the face frame (6) and the light-transmitting cover (2).

17. A lighting device as recited in claim 16, wherein: the annular pressing sheet (7) is a glass sheet.