CN210951237U - LED down lamp heat radiation structure and LED down lamp - Google Patents
LED down lamp heat radiation structure and LED down lamp Download PDFInfo
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- CN210951237U CN210951237U CN201922089207.1U CN201922089207U CN210951237U CN 210951237 U CN210951237 U CN 210951237U CN 201922089207 U CN201922089207 U CN 201922089207U CN 210951237 U CN210951237 U CN 210951237U
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Abstract
An LED down lamp heat radiation structure comprises an LED down lamp shell and a driving substrate for fixing a driving module, wherein the LED down lamp shell comprises a lamp body bottom cover, a lamp body surrounding wall and an installation cavity; the lamp body bottom possesses the first louvre of intercommunication installation cavity and outside, and the drive base plate possesses the second louvre, and the lamp body leg possesses the third louvre, and first louvre and second louvre can cooperate and communicate installation cavity and outside, and the third louvre sets up in the one side that the drive base plate deviates from the lamp body bottom. According to the embodiment of the application, the through heat dissipation holes are formed in the down lamp shell, the driving substrate and the lamp body bottom cover, so that a channel for circulating and flowing cold and hot air outside the down lamp, namely the driving substrate, the lamp body bottom cover and the down lamp is formed, the heat exchange efficiency between the inside of the down lamp and the outside of the down lamp is improved, and the technical effect of prolonging the service life of the LED down lamp is achieved.
Description
Technical Field
The invention relates to the field of lighting equipment, in particular to an LED down lamp heat dissipation structure and an LED down lamp.
Background
As a decorative lighting lamp, the LED down lamp has the characteristics of good light emitting effect, energy conservation, convenience in installation and the like, and is widely applied to indoor and outdoor decoration.
However, the light source and the driving module in the LED tube light have large heat productivity, and are easy to generate phenomena such as overheating and ignition when being used for a long time, thereby reducing the service life of the LED tube light.
Disclosure of Invention
The embodiment of the application provides a heat radiation structure of an LED down lamp and the LED down lamp, so that the problems are solved.
The embodiment of the application adopts the following technical scheme:
the embodiment of the application provides a heat dissipation structure of an LED (light emitting diode) down lamp, which comprises an LED down lamp shell and a driving substrate for fixing a driving module, wherein the LED down lamp shell comprises a lamp body bottom cover, a lamp body surrounding wall and an installation cavity, the lamp body surrounding wall is circumferentially surrounded to form a lamp body opening and a bottom opening which are opposite, the lamp body bottom cover covers the bottom opening, the lamp body surrounding wall and the lamp body bottom cover are commonly surrounded to form the installation cavity, the driving substrate is fixed in the installation cavity, and the orientation of the driving substrate is the same as that of the lamp body opening; the lamp body bottom cover is provided with a first heat dissipation hole communicated with the installation cavity and the outside, the driving substrate is provided with a second heat dissipation hole penetrating through the driving substrate, the lamp body surrounding wall is provided with a third heat dissipation hole communicated with the installation cavity and the outside, the first heat dissipation hole and the second heat dissipation hole can be matched and communicated with the installation cavity and the outside, and the third heat dissipation hole is formed in one side, deviating from the lamp body bottom cover, of the driving substrate.
Preferably, the number of the third heat dissipation holes is multiple, and the multiple third heat dissipation holes are arranged along the circumferential direction of the lamp body surrounding wall.
Preferably, the LED lamp further comprises a light source substrate for fixing the LED light source, the light source substrate is fixed in the mounting cavity and stacked with the driving substrate, the light source substrate is arranged on one side of the driving substrate, which is far away from the lamp body bottom cover, and the third heat dissipation hole is formed between the driving substrate and the light source substrate.
Preferably, a distance is provided between the driving substrate and the mounting bottom cover and between the driving substrate and the light source substrate.
Preferably, the light source substrate includes a fourth heat dissipation hole, and the fourth heat dissipation hole penetrates through the light source substrate.
Preferably, the first heat dissipation hole, the second heat dissipation hole and the fourth heat dissipation hole are coaxially arranged.
Preferably, the first heat dissipation hole is disposed in the center of the lamp body bottom cover, the second heat dissipation hole is disposed in the center of the driving substrate, and the fourth heat dissipation hole is disposed in the center of the light source substrate.
Preferably, the inner diameters of the fourth heat dissipation hole, the second heat dissipation hole and the first heat dissipation hole are sequentially increased.
Preferably, an extending direction of the third heat dissipation hole is perpendicular to an orientation direction of the lamp body opening.
Preferably, LED down lamp shell still includes circumference and centers on the enhancement leg of lamp body leg, strengthen the leg with the lamp body leg links to each other, strengthen the leg with form between the lamp body leg along the passageway of taking a breath that the lamp body leg extends, the third louvre set up in the passageway of taking a breath.
The embodiment of the application further provides an LED down lamp, including LED light source, drive module and as above LED down lamp heat radiation structure, the LED light source is fixed in the installation cavity, drive module is fixed in the drive base plate, drive module with the LED light source electricity is connected.
Preferably, still include the spotlight cup, the spotlight cup possess go out the light outlet and with the relative income light outlet that sets up of light outlet, LED down lamp shell possesses circumference and surrounds the lamp body opening just dorsad the buckling part that the lamp body open-ended direction extends, the inner edge that goes into the light outlet possesses the round and corresponds the buckling groove of buckling part, the opening direction orientation in buckling groove the center of going into the light outlet, the spotlight cup passes through buckling part with the mating reaction in buckling groove with LED down lamp shell can dismantle the connection.
Preferably, the lamp further comprises a diffuser plate, a circle of first abutting portion is convexly arranged on an inner edge of the light inlet, the first abutting portion is closer to the light outlet than the buckling groove, a circle of second abutting portion is convexly arranged on an inner edge of the lamp body opening, the first abutting portion is provided with a first abutting surface, the second abutting portion is provided with a second abutting surface, and the diffuser plate is arranged between the first abutting portion and the second abutting portion and is clamped by the first abutting surface and the second abutting surface in a matching manner.
According to the embodiment of the application, the through heat dissipation holes are formed in the down lamp shell, the driving substrate and the lamp body bottom cover, so that a channel for circulating and flowing cold and hot air outside the down lamp, namely the driving substrate, the lamp body bottom cover and the down lamp is formed, the heat exchange efficiency between the inside of the down lamp and the outside of the down lamp is improved, the occurrence probability of phenomena such as overheating and ignition is reduced, and the technical effect of prolonging the service life of the LED down lamp is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic view of each component of an LED tube lamp provided in the embodiment of the present application;
fig. 2 is a schematic cross-sectional view of a heat dissipation structure and other components of an LED tube lamp according to an embodiment of the present disclosure;
FIG. 3 is an enlarged view of area A in FIG. 2;
fig. 4 is a schematic view of an LED tube lamp provided in the embodiment of the present application.
Description of reference numerals:
1-LED down lamp shell, 2-drive substrate, 3-light source substrate, 4-reinforced wall, 5-LED light source, 6-drive module, 7-light-gathering cup, 8-diffusion plate, 10-lamp body bottom cover, 12-lamp body wall, 14-installation cavity, 16-buckling part, 18-protective screen, 20-second heat dissipation hole, 30-fourth heat dissipation hole, 40-air exchange channel, 70-light outlet, 72-light inlet, 74-buckling groove, 76-first abutting part, 100-first heat dissipation hole, 120-lamp body opening, 122-bottom opening, 124-third heat dissipation hole, 126-second abutting part, 760-first abutting surface, 1260-second abutting surface
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
The embodiment of the application discloses LED down lamp heat radiation structure, as shown in FIG. 4, LED down lamp heat radiation structure shown in FIG. 1 is cylindrical, can also be other shapes such as cuboid or square, and is not limited to cylindrical. As shown in fig. 4, the heat dissipation structure of the LED down lamp according to the embodiment of the present application includes an LED down lamp housing 1 and a driving substrate 2 for fixing a driving module, in order to facilitate installation, the LED down lamp housing 1 includes a lamp body bottom cover 10, a lamp body wall 12 and an installation cavity 14, the lamp body wall 12 circumferentially surrounds and forms a lamp body opening 120 and a bottom opening 122 which are opposite to each other, in the embodiment shown in fig. 1, in order to simplify the assembly process, the lamp body bottom cover 10 covers the bottom opening 122 and is detachably connected to the bottom opening 122, so as to facilitate the maintenance of the internal components in the process of the LED down lamp, the lamp body bottom cover 10 may be set to cover the bottom opening 122 and be fixedly connected to the bottom opening 122, or even integrally set.
The mounting cavity 14 is formed by the surrounding action of the lamp body surrounding wall 12 and the lamp body bottom cover 10, the mounting cavity 14 is mainly used for fixing functional components, the driving substrate 2 is fixed in the mounting cavity 14, as shown in fig. 2, the driving substrate 2 and the lamp body opening 120 are in the same orientation, the lamp body bottom cover 10 is provided with a first heat dissipation hole 100 communicating the mounting cavity 14 with the outside, the driving substrate 2 is provided with a second heat dissipation hole 20 penetrating through the driving substrate 2, the lamp body surrounding wall 12 is provided with a third heat dissipation hole 124 communicating the mounting cavity 14 with the outside, for better heat dissipation effect, the third heat dissipation hole 124 is arranged at one side of the driving substrate 2 departing from the lamp body bottom cover 10, and the first heat dissipation hole 100 and the second heat dissipation hole 20 can be matched and communicated with the mounting cavity 14 and the outside, as shown in fig. 2, a certain distance is provided between the driving substrate 2 and the lamp body bottom cover 10, and the first heat dissipation hole 100, the driving substrate 2 and the lamp body bottom cover 10 may be attached to each other, the first heat dissipation hole 100 and the second heat dissipation hole 20 may be engaged with each other and communicated with each other, and the hot air in the mounting cavity 14 may be transmitted to the outside through the first heat dissipation hole 100 and the second heat dissipation hole 20. Like this when the inside hot-air that produces of installation cavity 14 because LED down lamp work after, the hot-air can rise and transfer to the outside along the route of second louvre 20 to first louvre 100 to supply into outside cold air from the third louvre 124 of seting up on lamp body surrounding wall 12, supply into the cold air of installation cavity 14 and continue to be heated and rise, take away the inside heat of lamp body, thereby form the heat dissipation circulation that a cold and hot air flows.
According to the embodiment of the application, the through heat dissipation holes are formed in the down lamp shell, the driving substrate and the lamp body bottom cover, so that a channel for circulating and flowing cold and hot air outside the down lamp, namely the driving substrate, the lamp body bottom cover and the down lamp is formed, the heat exchange efficiency between the inside of the down lamp and the outside of the down lamp is improved, the occurrence probability of phenomena such as overheating and ignition is reduced, and the technical effect of prolonging the service life of the LED down lamp is achieved.
In order to enhance the efficiency of supplying cool air into the mounting cavity 14, in this embodiment, as shown in fig. 1, the third heat dissipation holes 124 are multiple and are circumferentially arranged along the lamp body peripheral wall, and may be uniformly arranged, or may have a certain density distribution according to the arrangement of other structures, and the like.
The heat dissipation structure of the LED tube light described in this embodiment further includes a light source substrate 3 for fixing the LED light source, as shown in fig. 2, the light source substrate 3 is fixed in the installation cavity 14, and is stacked with the driving substrate 2 and located at one side of the driving substrate 2 departing from the lamp body bottom cover 10, the third heat dissipation hole 124 is disposed between the driving substrate 2 and the light source substrate 3, so that the cold air flowing in from the third heat dissipation hole 124 can take away the heat on the light source substrate 3 at the same time. In order to achieve the best heat dissipation effect, as shown in fig. 1, a certain distance is provided between the driving substrate 2 and the lamp body bottom cover 10 and between the light source substrate 3, so that the hot air flowing effect is good.
In order to enhance the heat dissipation efficiency of the light source substrate 3, the light source substrate 3 is provided with a fourth heat dissipation hole 30, and the fourth heat dissipation hole 30 penetrates through the light source substrate 3, so that the heat on the other side of the light source substrate 3 can be conducted into the mounting cavity 14 through the fourth heat dissipation hole 30 and be taken out by the circulation of the cold and hot air.
In order to make the circulation of the cold and hot air smoother, in the present embodiment, the first heat dissipation hole 100, the second heat dissipation hole 20, and the fourth heat dissipation hole 30 are coaxially arranged, so that the hot air in the installation cavity 14 can be directly led to the outside without any twisting, further, the first heat dissipation hole 100, the second heat dissipation hole 20, and the fourth heat dissipation hole 30 can be all disposed at the center of the lamp body bottom cover 10, the driving substrate 2, and the light source substrate 3, so that the effect of taking away heat when the hot air flows is better, the aperture of the fourth heat dissipation hole 30, the aperture of the second heat dissipation hole 20, and the aperture of the first heat dissipation hole 100 can be sequentially increased, and the heat dissipation efficiency can also be increased.
In this embodiment, the extending direction of the third heat dissipation hole 124 is set to be perpendicular to the direction of the lamp body opening 120, so as to increase the flowing distance of the cold air in the installation cavity 14, as shown in fig. 1 and fig. 2, the heat dissipation structure of the LED tube light according to this embodiment further includes a reinforcing wall 4 circumferentially surrounding the lamp body wall 12, the reinforcing wall 4 may be connected to the lamp body wall 12 through a reinforcing rib as shown in fig. 1, or the reinforcing wall 4 and the lamp body wall 12 are both fixed on the same base and fixed at opposite positions, etc., a certain distance is provided between them and a ventilation channel 40 extending along the lamp body wall 12 is formed, and meanwhile, the position of the third heat dissipation hole 124 is set according to the position of the ventilation channel 40, so that the external cold air will flow through the outer surface of the lamp body wall 12 before being brought into the installation cavity 14, thereby increasing the heat.
Because the application the LED down lamp heat radiation structure during operation, often first louvre 100 is setting up, in order to reduce the probability that debris fall into the inside LED down lamp, in this embodiment, LED down lamp shell 1 still possesses protection network 18, protection network 18 links to each other with the inner edge of first louvre 100 and covers first louvre 100, can be as shown in fig. 1, protection network 18 and lamp body bottom 10 integration set up, can also be with protection network 18 setting up to an independent lid, can cover first louvre 100 in order to reduce the probability that debris got into the lamp body can.
The embodiment also provides an LED down lamp, and this LED down lamp includes LED light source 5, drive module 6 and foretell LED down lamp heat radiation structure, and LED light source 5 is fixed in installation cavity 14, can be as shown being fixed in light source substrate 3 in fig. 1, also can be fixed in other positions such as bottom in installation cavity 14, and drive module 6 is fixed in drive substrate 2, and is luminous for driving the LED light source, and drive module 6 is connected with LED light source 5 electricity.
The LED tube light provided by the embodiment of the present application further includes a light collecting cup 7, the light collecting cup has a light outlet 70 and a light inlet 72 opposite to the light outlet 70, light emitted from the LED light source 5 enters the light collecting cup 7 through the light inlet 72, and exits from the light outlet 70 after being gathered by the light collecting cup 7, as shown in fig. 3, the LED tube light housing 1 has a fastening portion 16 circumferentially surrounding the lamp body opening 120 and extending in a direction away from the lamp body opening 120, the fastening portion 16 may be a ring of convex fastening rings as shown in fig. 1, or may be a plurality of convex fastening teeth, etc., an inner edge of the light inlet 72 has a ring of fastening grooves 74 corresponding to the fastening portion 16, an opening direction of the fastening grooves 74 faces a center of the light inlet 72, the light collecting cup 7 is detachably connected to the LED tube light housing 1 through a matching effect of the fastening portion 16 and the fastening grooves 74, as shown in fig. 1, the fastening portion 16 extends into the fastening grooves 74 and is engaged with each other, thereby fixing the light-gathering cup 7 to the LED downlight housing 1.
As shown in fig. 3, the LED tube light provided by the embodiment of the present invention further includes a diffusion plate 8, a circle of first abutting portion 76 is provided to protrude from an inner edge of the light inlet 72, the first abutting portion 76 is closer to the light outlet 70 than the fastening groove 74, a circle of second abutting portion 126 is provided to protrude from an inner edge of the light body opening 120, the first abutting portion 76 has a first abutting surface 760, the second abutting portion 126 has a second abutting surface 1260, and the diffusion plate 8 is disposed between the first abutting portion 76 and the second abutting portion 126 and is clamped by the first abutting surface 760 and the second abutting surface 1260.
According to the embodiment of the application, the through heat dissipation holes are formed in the down lamp shell, the driving substrate and the lamp body bottom cover, so that a channel for circulating and flowing cold and hot air outside the down lamp, namely the driving substrate, the lamp body bottom cover and the down lamp is formed, the heat exchange efficiency between the inside of the down lamp and the outside of the down lamp is improved, the occurrence probability of phenomena such as overheating and ignition is reduced, and the technical effect of prolonging the service life of the LED down lamp is achieved.
In the embodiments of the present application, the difference between the embodiments is described in detail, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in view of brevity of the text.
Claims (14)
1. The utility model provides a LED down lamp heat radiation structure which characterized in that, includes LED down lamp shell and is used for fixed drive module's drive base plate, wherein:
the LED down lamp shell comprises a lamp body bottom cover, a lamp body surrounding wall and an installation cavity, wherein the lamp body surrounding wall circumferentially surrounds to form a lamp body opening and a bottom opening which are opposite, the lamp body bottom cover covers the bottom opening, the lamp body surrounding wall and the lamp body bottom cover jointly surround to form the installation cavity, the driving substrate is fixed in the installation cavity, and the extending direction of the driving substrate is perpendicular to the direction of the lamp body opening;
the lamp body bottom cover is provided with a first heat dissipation hole communicated with the installation cavity and the outside, the driving substrate is provided with a second heat dissipation hole penetrating through the driving substrate, the lamp body surrounding wall is provided with a third heat dissipation hole communicated with the installation cavity and the outside, the first heat dissipation hole and the second heat dissipation hole can be matched and communicated with the installation cavity and the outside, and the third heat dissipation hole is formed in one side, deviating from the lamp body bottom cover, of the driving substrate.
2. The LED down lamp heat dissipation structure of claim 1, wherein the third heat dissipation holes are multiple, and the multiple third heat dissipation holes are arranged along the circumferential direction of the lamp body surrounding wall.
3. The LED tube light heat dissipation structure of claim 1, further comprising a light source substrate for fixing an LED light source, wherein the light source substrate is fixed in the mounting cavity and stacked with the driving substrate, the light source substrate is disposed on a side of the driving substrate away from the lamp body bottom cover, and the third heat dissipation hole is disposed between the driving substrate and the light source substrate.
4. The heat dissipation structure of an LED tube lamp as claimed in claim 3, wherein a distance is provided between the driving substrate and the lamp body bottom cover and the light source substrate.
5. The LED tube light heat dissipation structure of claim 4, wherein the light source substrate is provided with a fourth heat dissipation hole, and the fourth heat dissipation hole penetrates through the light source substrate.
6. The LED tube light heat dissipation structure of claim 5, wherein the first heat dissipation hole, the second heat dissipation hole, and the fourth heat dissipation hole are coaxially arranged.
7. The LED tube light heat dissipation structure of claim 6, wherein the first heat dissipation hole is disposed at the center of the lamp body bottom cover, the second heat dissipation hole is disposed at the center of the driving substrate, and the fourth heat dissipation hole is disposed at the center of the light source substrate.
8. The LED tube light radiating structure of claim 7, wherein the inner diameters of the fourth radiating hole, the second radiating hole and the first radiating hole are increased in sequence.
9. The LED down lamp heat dissipation structure of claim 1, wherein the LED down lamp housing further comprises a protective mesh, and the protective mesh is connected with the inner edge of the first heat dissipation hole and covers the first heat dissipation hole.
10. The LED tube light heat dissipation structure of claim 1, wherein the extension direction of the third heat dissipation hole is perpendicular to the direction of the opening of the light body.
11. The LED down lamp heat dissipation structure of claim 1, wherein the LED down lamp housing further comprises a reinforcing wall circumferentially surrounding the lamp body wall, the reinforcing wall is connected to the lamp body wall, a ventilation channel extending along the lamp body wall is formed between the reinforcing wall and the lamp body wall, and the third heat dissipation holes are disposed in the ventilation channel.
12. An LED down lamp is characterized by comprising an LED light source, a driving module and the LED down lamp heat dissipation structure according to any one of claims 1 to 11, wherein the LED light source is fixed to the mounting cavity, the driving module is fixed to the driving substrate, and the driving module is electrically connected with the LED light source.
13. The LED downlight of claim 12, further comprising a light collection cup, wherein the light collection cup has a light exit and a light entrance opposite to the light exit, the LED downlight housing has a fastening portion circumferentially surrounding the lamp body opening and extending in a direction away from the lamp body opening, the inner edge of the light entrance has a circle of fastening grooves corresponding to the fastening portion, the opening direction of the fastening grooves faces the center of the light entrance, and the light collection cup is detachably connected to the LED downlight housing by cooperation of the fastening portion and the fastening grooves.
14. The LED tube light of claim 13, further comprising a diffuser plate, wherein a circle of first abutting portions is provided to protrude from an inner edge of the light inlet, the first abutting portions are closer to the light outlet than the fastening grooves, a circle of second abutting portions is provided to protrude from an inner edge of the lamp body opening, the first abutting portions have first abutting surfaces, the second abutting portions have second abutting surfaces, and the diffuser plate is disposed between the first abutting portions and the second abutting portions and is clamped by the first abutting surfaces and the second abutting surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922089207.1U CN210951237U (en) | 2019-11-28 | 2019-11-28 | LED down lamp heat radiation structure and LED down lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922089207.1U CN210951237U (en) | 2019-11-28 | 2019-11-28 | LED down lamp heat radiation structure and LED down lamp |
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| CN210951237U true CN210951237U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922089207.1U Active CN210951237U (en) | 2019-11-28 | 2019-11-28 | LED down lamp heat radiation structure and LED down lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660851A (en) * | 2022-04-12 | 2022-06-24 | Tcl华星光电技术有限公司 | Backlight module and display device |
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2019
- 2019-11-28 CN CN201922089207.1U patent/CN210951237U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660851A (en) * | 2022-04-12 | 2022-06-24 | Tcl华星光电技术有限公司 | Backlight module and display device |
| CN114660851B (en) * | 2022-04-12 | 2024-02-09 | Tcl华星光电技术有限公司 | Backlight module and display device |
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