CN212644404U

CN212644404U - Lamp and lamp assembly

Info

Publication number: CN212644404U
Application number: CN202021239387.3U
Authority: CN
Inventors: 姚越
Original assignee: Signify Holding BV
Current assignee: Signify Holding BV
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-03-02
Anticipated expiration: 2030-06-30

Abstract

The application provides a lamps and lanterns and lamps and lanterns subassembly, this lamps and lanterns include: a reflector (10) in which a light source assembly (20) is disposed; a driving box (30) having a driver therein, the driver being electrically connected to the light source assembly (20) to drive the light source assembly (20); radiator (40), with reflector (10) hot junction, radiator (40) are cavity cage structure, the outside of one end with drive box (30) can be dismantled and be connected, the outside of the other end with reflector (10) can be dismantled and be connected. According to the above-mentioned lamps and lanterns that this application provided, reflector (10) can conduct the heat that light source subassembly (20) produced to radiator (40), and radiator (40) are cavity cage structure, help the circulation of air when increasing heat radiating area, can give off the heat to the environment rapidly to be favorable to improving the radiating effect of lamps and lanterns, the life of extension lamps and lanterns.

Description

Lamp and lamp assembly

Technical Field

The application relates to the technical field of lighting lamps, in particular to a lamp and a lamp assembly.

Background

In factory buildings, a lighting device suspended in the air is generally used for lighting to facilitate operation of workers, such a lighting device is generally called a "ceiling Light (high bay)", and with the popularization of Light Emitting Diode (LED) technology, LED ceiling lights are increasingly used. Because the heat productivity of the LED during working is larger, the current LED ceiling lamp usually needs to be provided with a metal radiator for heat radiation. The existing metal radiator is unreasonable in structural design, heat cannot be effectively dissipated, LED light attenuation can be caused after long-time use, and the service life of the lamp is shortened.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the application provides a lamp and a lamp assembly, the structure of a radiator is improved, the overall radiating effect of the lamp can be improved, and the service life of the lamp can be prolonged.

In a first aspect, a luminaire is provided, comprising: a reflector, in which a light source component is arranged; the driving box is internally provided with a driver which is electrically connected with the light source component so as to drive the light source component; the radiator is in a hollow cage-shaped structure, the outer side of one end of the radiator is detachably connected with the driving box, and the outer side of the other end of the radiator is detachably connected with the reflecting cover.

According to the above-mentioned lamps and lanterns that this application provided, the reflector can conduct the heat that the light source subassembly produced to the radiator, and the radiator is cavity cage-shaped structure, helps the circulation of air when increasing heat radiating area, can give off the heat to the environment rapidly to be favorable to improving the radiating effect of lamps and lanterns, the life of extension lamps and lanterns.

The different both ends of radiator are connected drive box and reflector respectively for heat on the reflector can not or can be conducted to the drive box by the seldom, thereby can effectively reduce the temperature of drive box interior driver, and then can prolong the life of driver. The utility model provides a drive box and reflector connect in the outside of radiator one end, are favorable to being the circulation of the inside and outside air of radiator of cavity cage-like structure, can strengthen the radiating efficiency of radiator.

In one possible design, the lamp further comprises a spacer that spaces the drive box and the heat sink apart. Through above setting, on the one hand, can further realize the thermal insulation between drive box and the radiator, reduce the heat transfer between the two, be favorable to improving the life of driver. On the other hand, through setting up the separator for form the interval between drive box and the radiator, make the air can realize the heat convection with the upper surface of the roof of radiator, be favorable to improving the radiating efficiency of radiator.

In one possible embodiment, the heat sink is fixedly connected to the drive box via the spacer.

In one possible design, the spacing between the drive pod and the heat sink is 6 to 10 millimeters.

In one possible design, the heat sink includes a top wall and a side wall, a flange is arranged at the bottom end of the side wall, the top wall is connected with the driving box, and the flange is closely attached to the reflecting cover.

In a possible design, the top wall is provided with a plurality of through holes, and the side wall is provided with a plurality of grooves along a direction perpendicular to the top wall.

In one possible design, the overall open area of the top wall and the side wall is 20% to 40%.

In one possible embodiment, a thermally conductive gasket with high thermal conductivity is provided between the flange and the reflector.

In one possible design, the light source assembly includes a printed circuit board and a plurality of light emitting diodes fixedly attached to the printed circuit board.

In another aspect, the present application further provides a lamp assembly, including the lamp provided in any one of the possible designs of the first aspect, wherein the heat sink includes a plurality of heat sinks, and the heat sinks are different from each other in size; the light source components comprise a plurality of light sources, and the heat productivity of the light sources working mutually is different; the reflecting covers comprise a plurality of reflecting covers, and the sizes of the reflecting covers are different from each other; the radiator and the reflecting cover are mutually combined to match the radiating requirements of different light source components.

This application is through carrying out the modularized design with reflector, light source subassembly, radiator etc. and radiator and reflector make up the heat dissipation demand that can match different light source subassemblies each other to collocation that can be nimble goes out the lamps and lanterns that accord with different occasion needs.

Drawings

Fig. 1 is an overall assembly schematic diagram of a lamp provided in an embodiment of the present application.

Fig. 2 is a front view of a lamp provided in an embodiment of the present application.

Fig. 3 is an exploded view of a lamp according to an embodiment of the present disclosure.

Fig. 4 is a cross-sectional view of a lamp provided in an embodiment of the present application.

Fig. 5 is a schematic partial structural diagram of a lamp assembly provided in an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a lamp assembly provided in the embodiment of the present application after different parts are combined.

Reference numerals: 10. a reflector; 10a, a first reflector; 10b, a second reflector; 20. a light source assembly; 20a, a first light source assembly; 20b, a second light source assembly; 20c, a third light source assembly; 21. a printed circuit board; 22. a light emitting diode; 30. a drive cartridge; 31. avoiding the groove; 40. a heat sink; 40a, a first heat sink; 40b, a second heat sink; 41. a top wall; 42. a side wall; 43. a flange; 44. a through hole; 45. a trench; 50. a spacer; 100a, a first lamp; 100b, a second lamp; 100c, a third luminaire.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "upper", "lower", "side", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on installation, are only used for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

In the following, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of the features.

In a first aspect, an embodiment of the present application first provides a lamp, which may be the ceiling lamp, or may be other types of lamps such as an industrial and mining lamp, a ceiling lamp, a tunnel lamp, a street lamp, and a fluorescent lamp.

Fig. 1 is an overall assembly schematic diagram of a lamp provided in an embodiment of the present application. Fig. 2 is a front view of a lamp provided in an embodiment of the present application. Fig. 3 is an exploded view of a lamp according to an embodiment of the present disclosure. Fig. 4 is a cross-sectional view of a lamp provided in an embodiment of the present application. As shown in fig. 1 to 4, the lamp provided by the embodiment of the present application includes a reflector 10, a light source assembly 20, a driving box 30, and a heat sink 40.

Wherein, the light source assembly 20 is disposed in the reflector 10. On the one hand, the reflector 10 can prevent dust, rain water and the like from entering the light source assembly 20, and can protect the light source assembly 20, so as to prolong the service life of the light source assembly 20. On the other hand, the reflector 10 can condense and project the light generated from the light source assembly 20, thereby providing illumination to the user. In yet another aspect, the reflector 10 may also absorb heat generated by the light from the light source assembly 20 and dissipate the heat to the environment.

In order to improve the heat dissipation effect, the reflector 10 may be made of a thin metal plate. The metal may be aluminum, aluminum alloy, copper alloy, stainless steel, or the like. The light source assembly 20 is fixedly disposed in the reflector 10, and a heat conductive gasket may be disposed between the light source assembly 20 and the inner surface of the reflector 10, so as to enhance heat transfer therebetween. For example, the material of the heat conducting pad may be heat conducting silicone or heat conducting silicone grease.

In addition, a reflective layer may be disposed on the inner surface of the reflector 10 by a spraying or electroplating process to improve the light extraction efficiency, for example, the reflective layer may be a nano aluminum reflective layer.

A driver (not shown) is disposed in the driving box 30, and is electrically connected to the light source assembly 20 and capable of providing power to the light source assembly 20 to drive the light source assembly 20 to emit light. For example, the driver may be a driving circuit.

The heat sink 40 is thermally connected to the reflector 10. The reflector 10 absorbs heat generated by the light source assembly 20 when it emits light, and a portion of the heat is directly dissipated to the environment, and another portion of the heat is conducted to the heat sink 40 and dissipated to the environment by the heat sink 40. Here, the heat sink 40 is thermally connected to the reflector 10, which means that heat conduction can be achieved between the heat sink 40 and the reflector 10, and heat on the reflector 10 can be conducted to the heat sink 40, and the heat conduction efficiency between the two is sufficiently high.

In the embodiment of the present application, the heat sink 40 has a hollow cage structure, and the outer side of one end is detachably connected to the driving box 30, and the outer side of the other end is detachably connected to the reflector 10. Different ends of the heat sink 40 are connected to the driving case 30 and the reflector 10, respectively, so that the above-mentioned components can form an integral structure.

As shown in fig. 1, 2 and 4, the driving case 30 is connected to the reflector 10 through a heat sink 40. The driving case 30 and the reflection case 10 are respectively coupled to opposite ends of the heat sink 40. Specifically, the driving case 30 is connected to the top end of the heat sink 40, and the reflector 10 is connected to the bottom end of the heat sink 40.

In other embodiments, the driving box 30 and the reflector 10 may be connected to two adjacent ends of the heat sink 40, respectively, which is not limited in this application. For example, the driving case 30 is connected to a side end of the heat sink 40, and the reflector 10 is connected to a bottom end of the heat sink 40.

Alternatively, the heat sink 40 is made of a thin metal plate. The metal may be aluminum, aluminum alloy, copper alloy, stainless steel, or the like. The heat sink 40 and the reflector 10 may be made of the same material.

Optionally, the heat sink 40 is a sheet metal part.

Alternatively, the heat sink 40 may be press-formed from a metal plate material, such as an aluminum plate or a steel plate.

According to the above lamp provided by the embodiment of the application, the reflector 10 can conduct the heat generated by the light source assembly 20 to the radiator 40, the radiator 40 is in a hollow cage-shaped structure, the heat dissipation area is increased, the circulation of air is facilitated, the heat can be rapidly dissipated to the environment, the heat dissipation effect of the lamp is improved, and the service life of the lamp is prolonged.

The different both ends of radiator 40 are connected drive box 30 and reflector 10 respectively for the heat on the reflector 10 can not or rarely be conducted to drive box 30, thereby can effectively reduce the temperature of the interior driver of drive box 30, and then can prolong the life of driver.

The driving box 30 and the reflecting cover 10 are connected to the outer side of one end of the radiator 40, circulation of air inside and outside the radiator 40 with a hollow cage-shaped structure is facilitated, and the radiating efficiency of the radiator 40 can be enhanced.

As shown in fig. 1 to 4, in the present application, the heat sink 40 includes a top wall 41 and a side wall 42, a flange 43 is disposed at a bottom end of the side wall 42, the top wall 41 is connected to the driving box 30, and the flange 43 is closely attached to the reflector 10. The top wall 41 is provided with a plurality of through holes 44, and the side wall 42 is provided with a plurality of grooves 45 along a direction perpendicular to the top wall 41. With the above-described related arrangement, the radiator 40 of the present application forms the above-described hollow cage-like structure.

In the present embodiment, the top wall 41 is circular, and in other embodiments, the top wall 41 may also be square or have other shapes, which is not limited in the present application.

In order to further improve the heat dissipation effect, the entire opening ratio of the top wall 41 and the side wall 42 is 20% to 40%. The opening ratio is preferably 20% to 30%, and the heat dissipation effect can be optimized. Here, the open area ratio, i.e., the open area, means the percentage of the area of the open area to the total area of the entire top wall 41 and the side wall 42.

The flange 43 is in close fitting connection with the reflector 10 to achieve a reliable thermal connection therebetween. Optionally, a heat conducting gasket with high heat conductivity is provided between the flange 43 and the reflector 10. For example, the heat conducting pad may be made of heat conducting silicone or heat conducting silicone grease.

Alternatively, the flange 43 and the reflector 10 may be connected by a snap, a screw, a bolt, a heat-conducting adhesive, or the like.

As shown in fig. 3 and 4, in the embodiment of the present application, the light source assembly 20 is an LED light source assembly, and includes a printed circuit board 21 and a plurality of light emitting diodes 22, where the light emitting diodes 22 are fixedly connected to the printed circuit board 21. The driver is electrically connected to the printed circuit board 21, and the electric energy transmitted by the driver is transmitted to the light emitting diode 22 through the printed circuit board 21 to drive the light emitting diode 22 to emit light. At this time, the heat conductive pad may be disposed between the printed circuit board 21 and the inner surface of the reflector 10. Alternatively, the printed circuit board 21 may adopt an aluminum substrate or a copper substrate, such as a sheet material of CEM1, CEM3, FR4, and the like.

As shown in fig. 1-4, the light fixture further includes a spacer 50, the spacer 50 spacing the drive box 30 from the heat sink 40. Through the above arrangement, on the one hand, thermal isolation between the driving box 30 and the heat sink 40 can be further realized, heat transfer between the driving box and the heat sink is reduced, and the service life of the driver is prolonged. On the other hand, by providing the spacer 50, a space s is formed between the driving box 30 and the heat sink 40, so that the air can perform heat convection with the upper surface of the top wall 41 of the heat sink 40, which is beneficial to improving the heat dissipation efficiency of the heat sink 40.

Alternatively, the interval s between the drive cassette 30 and the heat sink 40 is 6 to 10 mm. As can be seen from experimental data, the larger the value of the interval s (i.e., the distance therebetween), the better the heat dissipation effect of the heat sink 40. The interval s is preferably 8mm in consideration of the design aesthetic of the product.

While 4 spacers 50 are shown in fig. 3 by way of example, it will be appreciated that more or fewer spacers 50 are possible, as the structure and space permits, in accordance with particular requirements.

As shown in fig. 1-4, the heat sink 40 is fixedly connected to the drive cassette 30 via a spacer 50. Specifically, a threaded hole may be formed in the spacer 50, and a through hole is correspondingly formed in the bottom wall of the driving box 30, and a bolt may pass through the through hole and be locked in the threaded hole, so as to achieve a fixed connection therebetween. Further, for convenience of the locking operation and at the same time for the sake of the appearance, an escape groove 31 may be provided at a side wall of the drive case 30.

On the other hand, the embodiment of the application also provides a lamp assembly, and the lamp assembly comprises the lamp provided by the embodiment.

Further, the heat sink 40 includes a plurality of heat sinks, which are different in size from one another, that is, the heat dissipation capacity of each heat sink 40 is different. The plurality of light source assemblies 20 are operated with different amounts of heat, that is, different intensities of light emitted from the light source assemblies 20. The reflector 10 includes a plurality of reflectors having different sizes from one another, and the heat sink 40 and the reflector 10 are combined with each other to match the heat dissipation requirements of different light source modules 20.

Fig. 5 is a schematic partial structural diagram of a lamp assembly provided in an embodiment of the present application. As shown in fig. 5, in the embodiment of the present application, there are two radiators 40, namely, a first radiator 40a and a second radiator 40b, and the size of the second radiator 40b is larger than that of the first radiator 40 a.

The number of the reflectors 10 is two, and the reflectors are respectively a first reflector 10a and a second reflector 10b, and the size of the second reflector 10b is larger than that of the first heat sink 40 a.

The number of the light source assemblies 20 is 3, which are respectively a first light source assembly 20a, a second light source assembly 20b, and a third light source assembly 20c, and the luminous intensities of the first light source assembly 20a, the second light source assembly 20b, and the third light source assembly 20c are sequentially increased, that is, the amount of heat emitted during light emission is also sequentially increased.

As can be seen from the foregoing description, the outer side of one end of the heat sink 40 is detachably connected to the driving box 30, the outer side of the other end of the heat sink 40 is detachably connected to the reflective cover 10, and the light source assembly 20 is also detachably connected to the reflective cover 10, so that the heat sink 40 and the reflective cover 10 can be conveniently combined for use to match the heat dissipation requirements of different light source assemblies 20.

Specifically, the first light source assembly 20a with lower luminous intensity can be matched through the combination of the first heat sink 40a and the first reflector 10a to form the first lamp 100a in fig. 6.

The second light source assembly 20b with intermediate luminous intensity can be matched by the combination of the first heat sink 40a and the second reflector 10b to form the second luminaire 100b in fig. 6.

The third light source assembly 20c with higher luminous intensity can be matched by the combination of the second heat sink 40b and the second reflector 10b to form the third luminaire 100c in fig. 6.

Since the lamp provided by the above embodiment is adopted in the lamp assembly, the lamp assembly also has the technical effect corresponding to the lamp, and the details are not repeated herein.

In addition, this application is through carrying out modular design with reflector 10, light source subassembly 20, radiator 40 etc. and radiator 40 and reflector 10 make up the heat dissipation demand that can match different light source subassemblies 20 each other to the collocation that can be nimble goes out the lamps and lanterns that accord with different occasion needs.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A light fixture, comprising:

a reflector (10) in which a light source assembly (20) is disposed;

a driving box (30) having a driver therein, the driver being electrically connected to the light source assembly (20) to drive the light source assembly (20);

radiator (40), with reflector (10) hot junction, radiator (40) are cavity cage structure, the outside of one end with drive box (30) can be dismantled and be connected, the outside of the other end with reflector (10) can be dismantled and be connected.

2. A light fixture as claimed in claim 1, characterized in that the light fixture further comprises a spacer (50), the spacer (50) spacing apart the drive box (30) and the heat sink (40).

3. A lamp as claimed in claim 2, characterized in that said heat sink (40) is fixedly connected to said driving box (30) by means of said spacer (50).

4. A light fixture as claimed in claim 2 or 3, characterized in that the spacing between the drive box (30) and the heat sink (40) is 6 to 10 mm.

5. A lamp as claimed in any one of claims 1 to 3, characterized in that the heat sink (40) comprises a top wall (41) and a side wall (42), a flange (43) is arranged at the bottom end of the side wall (42), the top wall (41) is connected with the driving box (30), and the flange (43) is closely attached to the reflector (10).

6. A lamp as claimed in claim 5, characterized in that said top wall (41) is provided with a plurality of through holes (44), and said side walls (42) are provided with a plurality of grooves (45) in a direction perpendicular to said top wall (41).

7. A lamp as claimed in claim 6, characterized in that the total opening ratio of the top wall (41) and the side walls (42) is 20-40%.

8. A lamp as claimed in claim 5, characterized in that a thermally conductive gasket with high thermal conductivity is provided between the flange (43) and the reflector (10).

9. A lamp as claimed in any one of claims 1 to 3, characterized in that the light source assembly (20) comprises a printed circuit board (21) and a plurality of light-emitting diodes (22), the plurality of light-emitting diodes (22) being fixedly connected to the printed circuit board (21).

10. A lamp assembly, characterized in that it comprises a lamp according to any one of claims 1 to 9, said heat sink (40) comprising a plurality of portions, each having a different size from the others; the light source assembly (20) comprises a plurality of light sources, and the heat generation amounts of the light sources are different from each other; the reflector (10) comprises a plurality of reflectors, and the sizes of the reflectors are different from each other; the heat sink (40) and the reflector (10) are combined with each other to match the heat dissipation requirements of different light source assemblies (20).