CN202884746U - Light-emitting diode (LED) car lamp - Google Patents
Light-emitting diode (LED) car lamp Download PDFInfo
- Publication number
- CN202884746U CN202884746U CN201220534772XU CN201220534772U CN202884746U CN 202884746 U CN202884746 U CN 202884746U CN 201220534772X U CN201220534772X U CN 201220534772XU CN 201220534772 U CN201220534772 U CN 201220534772U CN 202884746 U CN202884746 U CN 202884746U
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- led
- cover
- copper substrate
- screw thread
- groove
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Abstract
The utility model discloses a light-emitting diode (LED) car lamp. The LED car clamp comprises an LED lamp plate, a copper substrate, an aluminum base seat, a transparent lens and a panel cover, wherein the aluminum base seat is provided with a concave groove, a nickel layer is plated on the bottom of the concave groove, soldering paste is covered on one surface of the copper substrate, the copper substrate is welded with the bottom of the concave groove through the covered soldering paste, the LED lamp plate is fixed on the other surface of the copper substrate, a light-emitting surface of the LED lamp plate faces the transparent lens, the transparent lens is fixed in the panel cover, and the panel cover is fixedly connected with the aluminum base seat. According to the LED car clamp, the copper substrate and the aluminum base seat are directly welded for heat conduction, the structure is simple, the heat dissipation effect is good, the anti-aging effect is good, and the phenomenon that the service life of the LED car clamp is affected by high conjunction temperature generated by heat dissipation bonding agents is avoided.
Description
Technical field
The utility model relates to lighting technical field, relates in particular to a kind of LED auto lamp.
Background technology
In the LED industry, the heat radiation of LED auto lamp is a technical barrier.So far, each large LED auto lamp manufacturing firm does not all have better way to solve this heat dissipation problem.The radiator structure that existing employing aluminium base and thermal grease are bonding causes the heat radiation temperature difference between LED, aluminium base and aluminium base (auto lamp shell) larger, and the LED junction temperature is higher.When the LED junction temperature more than 70 ℃ the time, LED lamp pearl will be subject to badly damaged, causes light decay, affects the life-span of whole LED light fixture.
At present, adopt aluminium base to be applied on the LED, when more being applied to the LED auto lamp, its radiating effect is not good enough.Particularly need to arrange one deck heat radiation adhesive between aluminium base and aluminium shell and be bonded together, thermal resistance is too large.After the LED heat conducted to aluminium base, the heat of aluminium base just can be directly transferred on the auto lamp shell body by thermal paste, caused LED and skin temperature higher.And the junction temperature of LED lamp pearl or LED module is during greater than 75 ℃, and the life-span of LED can shorten greatly.In addition, the bad processing of the welding procedure between aluminium base and aluminium base, thermal grease can be aging through long-term the use, can not reach radiating effect and easily cause contact insufficient, and the inhomogeneous local temperature that also can make light fixture of dispelling the heat is too high and affect the life-span.
The utility model content
For the weak point that exists in the above-mentioned technology, the utility model provides a kind of simple in structure, good heat dissipation effect and the good LED auto lamp of antiageing effect, can not produce the service life that high junction temperature affects LED because of the heat radiation adhesive.
For achieving the above object, the utility model provides a kind of LED auto lamp, comprises LED lamp plate, copper base, aluminium base, transparent mirror and cover; Described aluminium base is provided with a groove, be coated with nickel dam on the bottom of described groove, the one side of described copper base covers solder(ing) paste, described copper base is by the solder(ing) paste of covering and the bottom welding of groove, described LED lamp plate be fixed on the another side of copper base and exiting surface towards transparent mirror, described transparent mirror is fixed in the cover, and described cover is fixedly connected with aluminium base.
Wherein, described solder(ing) paste is without the chlorine leadless soldering tin paste, and this thickness without the chlorine leadless soldering tin paste is 0.2-0.6mm.
Wherein, the inwall of described groove is provided with screw thread, and the side of described cover is provided with screw thread; Screw thread and the screw thread on the cover on the described groove are suitable.
The beneficial effects of the utility model are: compared with prior art, the LED auto lamp that the utility model provides, directly weld heat conduction by copper base and aluminium base, simple in structure, good heat dissipation effect and antiageing effect are good, can not produce the service life that high junction temperature affects LED because of the heat radiation adhesive.
Description of drawings
Fig. 1 is the explosive view of LED auto lamp of the present utility model.
The main element symbol description is as follows:
1, LED lamp plate 2, copper base
3, aluminium base 4, transparent mirror
5, cover 31, groove
51, the screw thread on the screw thread on the cover 311, the groove
The specific embodiment
In order more clearly to explain the utility model, below in conjunction with accompanying drawing the utility model is done to describe further.
See also Fig. 1, the LED auto lamp that the utility model provides comprises LED lamp plate 1, copper base 2, aluminium base 3, transparent mirror 4 and cover 5; Aluminium base 3 is provided with a groove 31, be coated with nickel dam on the bottom of groove 31, the one side of copper base 2 covers solder(ing) paste, copper base 2 is by the solder(ing) paste of covering and the bottom welding of groove 31, LED lamp plate 1 be fixed on the another side of copper base 2 and exiting surface towards transparent mirror 4, transparent mirror 4 is fixed in the cover 5, and cover 5 is fixedly connected with aluminium base 3.
Situation compared to prior art, the LED auto lamp that present embodiment provides, directly weld heat conduction by copper base 2 and aluminium base 3, simple in structure, good heat dissipation effect and antiageing effect are good, can not produce the service life that high junction temperature affects LED because of the adhesive that dispels the heat.
In the present embodiment, above-mentioned soldering-tin layer is without the chlorine lead-free soldering tin layer, and this thickness without the chlorine lead-free soldering tin layer is 0.2-0.6mm.The utility model is not limited to thickness, fusing point and the material of tin cream; so long as weld with the aluminium base of nickel coating and the embodiment of copper base by tin cream; all belong to simple deformation of the present utility model or conversion, fall into protection domain of the present utility model.
In the present embodiment, the inwall of groove 31 is provided with screw thread, and the side of cover 5 is provided with screw thread; Screw thread 311 on the groove is connected with the sealing of aluminium base 3 with screw thread 51 suitable covers 5 of realizing on the cover, when needs were changed LED lamp plate 1, copper base 2 or transparent mirror 4, the screw thread of only need to outwarding winding got final product.Certainly; the utility model is not limited to and adopts the suitable mode of screw thread to realize the embodiment that cover 5 is connected with the sealing of aluminium base 3; can also be by engaging, be spirally connected or other specific embodiment such as welding; if the change of the mode that cover 5 is connected with the sealing of aluminium base 3; all belong to simple deformation of the present utility model or conversion, fall into protection domain of the present utility model.
More than disclosed only be several specific embodiment of the present utility model, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.
Claims (3)
1. a LED auto lamp is characterized in that, comprises LED lamp plate, copper base, aluminium base, transparent mirror and cover; Described aluminium base is provided with a groove, be coated with nickel dam on the bottom of described groove, the one side of described copper base covers solder(ing) paste, described copper base is by the solder(ing) paste of covering and the bottom welding of groove, described LED lamp plate be fixed on the another side of copper base and exiting surface towards transparent mirror, described transparent mirror is fixed in the cover, and described cover is fixedly connected with aluminium base.
2. LED auto lamp according to claim 1 is characterized in that, described solder(ing) paste is without the chlorine leadless soldering tin paste, and this thickness without the chlorine leadless soldering tin paste is 0.2-0.6mm.
3. LED auto lamp according to claim 1 and 2 is characterized in that, the inwall of described groove is provided with screw thread, and the side of described cover is provided with screw thread; Screw thread and the screw thread on the cover on the described groove are suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220534772XU CN202884746U (en) | 2012-10-18 | 2012-10-18 | Light-emitting diode (LED) car lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220534772XU CN202884746U (en) | 2012-10-18 | 2012-10-18 | Light-emitting diode (LED) car lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202884746U true CN202884746U (en) | 2013-04-17 |
Family
ID=48076170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220534772XU Expired - Fee Related CN202884746U (en) | 2012-10-18 | 2012-10-18 | Light-emitting diode (LED) car lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202884746U (en) |
-
2012
- 2012-10-18 CN CN201220534772XU patent/CN202884746U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20131018 |