CN204786024U - LED automobile lamp - Google Patents

Abstract

The utility model discloses a LED automobile lamp, including the lamp stand, install LED light source board, drive circuit and lamp shade in the lamp stand, install radiator and a control unit who is used for controlling LED luminance in the lamp stand, the radiator is the cylinder or the stage body that one end is the plane setting, LED light source board is connected and is fixed at the plane end of radiator, fully contacts with the radiator to the heat dissipation body can be directly, the heat that produces LED light source board is derived fast, makes the temperature of LED light source board keep in normal operating temperature scope, prolongs the life of LED light source board; the control unit is a pulse width modulation controller or an input power adjusting device, the current flowing through the LED is changed through the pulse width modulation controller, or the power of the LED is adjusted through the input power adjusting device, so that the brightness of the LED automobile lamp is adjustable, and different requirements of people on the brightness when the automobile lamp is used for illumination are met.

Description

LED car lights

technical field

The utility model relates to a lamp for automobile lighting, in particular to an LED automobile lamp.

Background technique

Car lights are various traffic lights installed on cars to ensure safe driving. It is an important part in car production. Although its technical content is relatively low compared with the engine or electrical control part, its role Small vision, has the function of lighting and transmitting signals. LED light sources have the characteristics of long life, no pollution, high light efficiency, etc., and are also used in car lights to form LED car lights. However, the LED light source will generate heat. If the heat generated by the LED light source cannot be dissipated in time, the internal temperature of the lamp body will become higher and higher, which will not only accelerate the aging of the LED, shorten its service life, and even cause the LED to burn out in severe cases. And the brightness of existing LED automobile light cannot be adjusted, and people can't satisfy people's demand to brightness when using automobile light illumination when playing outside.

Therefore, how to solve the above problems is an urgent technical problem in the industry.

Utility model content

The main purpose of the utility model is to provide an LED automobile lamp with adjustable brightness and long service life, so as to meet people's different demands on brightness when using the automobile lamp for lighting.

The utility model proposes an LED automobile lamp, which includes a lamp holder, an LED light source board installed in the lamp holder, a driving circuit and a lampshade, and a radiator and a lamp for controlling the brightness of the LED light are installed in the lamp holder. The control unit, the heat sink is a cylinder or platform with one end in a plane, the LED light source board is connected and fixed on the plane end of the heat sink, and the control unit is a pulse width modulation controller or an input power regulator device, the control unit is connected to the driving circuit.

Preferably, the LED light source board is pasted and fixed on the plane end surface of the heat sink by thermally conductive adhesive.

Preferably, the LED light source board is fixed on the plane end surface of the heat sink through screw connection.

Preferably, the radiator includes several radiator fins arranged radially.

Preferably, a passage is provided through the heat sink, and a through hole corresponding to the passage is provided on the LED light source board, and the leads of the LED light source board and the power output wires of the driving circuit pass through The channels and the through holes are connected to each other.

The beneficial effects of the LED automobile light of the present utility model are:

The lamp holder of the LED automobile lamp of the utility model is provided with a heat sink, and the LED light source board is directly fixed on the plane end surface of the heat sink, and fully contacts with the heat sink, so that the heat sink can directly and quickly dissipate the heat produced by the LED light source board. The heat is exported, the heat conduction and heat dissipation are fast, which can keep the temperature of the LED light source board within the normal operating temperature range, prolong the service life of the LED light source board, and solve the problem of heat dissipation.

The lamp holder of the LED automobile lamp of the utility model is provided with a control unit that can control the luminous brightness of the LED light source, and the current flowing through the LED can be changed through a pulse width modulation controller, or the power of the LED can be adjusted through an input power adjustment device. Adjustment makes the brightness of LED car lights adjustable, meeting people's different needs for brightness when using car lights for lighting.

Description of drawings

Fig. 1 is the three-dimensional view of the combination of the LED light source board and the radiator of the LED automobile lamp of the present invention;

Fig. 2 is a perspective view of the utility model LED automobile lamp;

Fig. 3 is a circuit block diagram of the LED automobile lamp of the present invention.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1 to Fig. 3, an embodiment of the LED automobile lamp of the present utility model is proposed:

A kind of LED automobile lamp, comprises lamp holder 10, LED light source board 20 installed in lamp holder 10, driving circuit 40 and lampshade 60, lampshade 60 is set on the upper port of lamp holder 10, and LED light source board 20 is covered on Inside. The LED light source board 20 is composed of a circular aluminum substrate and a plurality of LED chips welded on the aluminum substrate. A radiator 30 and a control unit for controlling the brightness of the LED light are also installed in the lamp holder 10 .

The radiator 30 is made of aluminum alloy material with high thermal conductivity, and has efficient heat conduction and heat dissipation performance. The cooling body 30 is a cylinder with one end flat, and a number of radially arranged cooling fins 301 are arranged on its side wall. The arrangement of the cooling fins 301 increases the cooling area of the cooling body 30 and improves the cooling efficiency. The LED light source board 20 is pasted and fixed on the plane end surface of the heat sink 30 with heat-conducting adhesive, and the LED light source board 20 is fully in contact with the heat sink 30, so that the heat sink 30 can directly and quickly export the heat generated by the LED light source board 20, conduct heat , The heat dissipation speed is fast, which can keep the temperature of the LED light source board 20 within the normal working temperature range, prolong the service life of the LED light source board 20, and solve the problem of heat dissipation.

A passage is provided through the radiator 30, and a through hole corresponding to the passage is provided on the LED light source board 20. The leads of the LED light source board 20 and the power output wires of the driving circuit 40 are connected to each other through the passage and the through hole. The circuit 40 provides constant DC power for the LED light source board 20 to drive the LED light source board 20 to emit light.

The control unit is a pulse width modulation controller 50 , and the pulse width modulation controller 50 is respectively connected to the external power supply and the driving circuit 40 . The magnitude of the current flowing through the LED chip is changed by the pulse width modulation controller 50, and the magnitude of the current flowing through the LED chip changes, and the luminous brightness of the LED light source board 20 changes accordingly, so that the brightness of the LED car light can be adjusted to meet People have different needs for brightness when using car lights for lighting.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (5)

1. A kind of LED automobile light, comprise lamp holder, be installed in the LED light source plate in described lamp holder, drive circuit and lampshade, it is characterized in that, heat dissipation body and a for controlling LED to emit light are installed in described lamp holder Brightness control unit, the heat sink is a column or platform with one end in a plane, the LED light source board is connected and fixed on the plane end of the heat sink, and the control unit is a pulse width modulation controller or an input power An adjustment device, the control unit is connected with the drive circuit. 2 . The LED automobile light according to claim 1 , wherein the LED light source board is pasted and fixed on the plane end surface of the radiator by means of thermally conductive adhesive. 3 . 3. The LED automobile lamp according to claim 1, wherein the LED light source board is fixed on the plane end surface of the radiator by screw connection. 4. The LED automotive lamp according to claim 1, wherein the heat sink comprises a plurality of heat sinks arranged radially. 5. The LED automobile lamp according to any one of claims 1 to 4, characterized in that, a passage is provided through the heat sink, and a passage corresponding to the passage is provided on the LED light source board. The lead wire of the LED light source board and the power output wire of the driving circuit are connected to each other through the channel and the through hole.