CN209782502U - LED car light with high-efficient heat abstractor - Google Patents

Abstract

A LED car light with a high-efficiency heat dissipation device is characterized in that a heat radiator is formed by splicing a first heat conductor and a second heat conductor which are high in heat conduction material and have symmetrical shapes, a cavity capable of containing corresponding LED modules and phase change heat pipes is arranged in the heat radiator, and a fan shield are mounted at the end part of the cavity; the two heat conductors spliced into the radiator are uniformly provided with a plurality of radiating fins and wiring notches on the peripheral side wall of one end close to the fan, the direction of gaps formed among the radiating fins is consistent with the air outlet direction of the fan, and the other end of each radiating fin is uniformly provided with a light-transmitting window which is used for accommodating the LED element and has the function of light passing; the LED module consists of a copper-based circuit board and an LED element, wherein the copper-based circuit board and the phase change heat pipe are bonded or welded into a whole by using a high-heat-conductivity adhesive or soldering tin and then are arranged in a heat conductor of the radiator; a power supply wire of the car lamp is electrically connected with the LED module and the fan through the wiring notch; the lamp cap of the vehicle lamp is arranged on the radiator.

Description

LED car light with high-efficient heat abstractor

The technical field is as follows:

The utility model relates to an automotive lighting field especially relates to a LED car light with high-efficient heat abstractor.

Background art:

The technology applied to automobiles is constantly innovated, wherein the automobile lighting technology is developed from the past halogen lamp and HID lamp (namely, high-pressure gas discharge lamp is commonly called xenon lamp) to the present LED (namely, light-emitting diode is short), and along with the progress of the LED technology, the LED lighting lamp has the advantages of high lighting effect, electricity saving, long service life, quick start, strong technological sense and the like, and is accepted by more and more consumers. However, it has the disadvantage that due to the construction and the operating principle of the LED element, too high temperatures may cause severe light degradation, shorten the service life, and even affect the driving safety, which requires a good heat sink device to ensure its proper operation.

at present, the existing heat dissipation device for the LED car lamp adopts methods of thickening and enlarging an aluminum lamp body, adding more heat dissipation fins to increase the heat dissipation area, adding a fan and the like to solve the problems. However, due to the limitation of available space in the car lamp, the method of simply thickening and enlarging the aluminum lamp body and adding more heat dissipation fins is limited to a certain extent, the heat dissipation effect is not obvious, the car lamp is inconvenient to mount and poor in compatibility, so that a plurality of cars cannot be mounted, and even the optical position of the LED light source deviates from the original design requirement of the lamp, so that the optical effect of the car lamp is affected.

The reasons for the above-mentioned drawbacks are: the heat-conducting property and structure of the material of the LED lamp body do not meet the requirements, and the high-temperature heat generated by the LED element during working cannot be sufficiently and quickly dissipated.

The utility model has the following contents:

the utility model aims at solving the prior art problem, provide a LED car light with high-efficient heat abstractor, it can solve the unsatisfactory light decay that causes of current LED car light heat dissipation serious, life is short, the not good problem of optical effect, is a heat dissipation and optical effect hold concurrently good LED car light.

The utility model discloses a realize like this:

an LED car lamp with a high-efficiency heat dissipation device comprises a car lamp cap, a heat radiator, a fan shield, an LED module and a phase change heat pipe; the radiator is formed by splicing a first heat conductor and a second heat conductor which are of high heat conduction materials and have symmetrical shapes, a cavity capable of containing corresponding LED modules and phase change heat pipes is arranged in the radiator, and a fan shield are arranged at the end part of the cavity; the two heat conductors spliced into the radiator are uniformly provided with a plurality of radiating fins and wiring notches on the peripheral side wall of one end close to the fan, the direction of gaps formed among the radiating fins is consistent with the air outlet direction of the fan, and the other end of each radiating fin is uniformly provided with a light-transmitting window which is used for accommodating the LED element and has the function of light passing; the LED module consists of a copper-based circuit board and an LED element, wherein the copper-based circuit board and the phase change heat pipe are bonded or welded into a whole by using a high-heat-conductivity adhesive or soldering tin and then are arranged in a heat conductor of the radiator; a power supply wire of the car lamp is electrically connected with the LED module and the fan through the wiring notch; the lamp cap of the vehicle lamp is arranged on the radiator.

The radiator is also used as a lamp body; grooves are formed in the inner sides of the first heat conductor and the second heat conductor which are spliced to form the radiator, and a cavity for containing the LED module and the phase change heat pipe is formed after splicing.

The evaporation end of the phase change heat pipe is arranged close to the LED element in the LED module, the condensation end of the phase change heat pipe is opposite to the evaporation end of the phase change heat pipe and is far away from the LED element in the LED module, and the partial surface of the copper-based circuit board and the surface of one side of the phase change heat pipe are bonded or welded into a whole by high heat conduction adhesive or soldering tin.

The LED module and the phase change heat pipe are adhered by a high-heat-conductivity adhesive or welded into a whole by soldering tin and then arranged in a cavity of the radiator, the condensation end of the phase change heat pipe is close to the radiating fin, the evaporation end of the phase change heat pipe is close to the light-transmitting window of the radiator, the LED element is aligned with the window of the radiator, and light emitted by the LED element is emitted out through the light-transmitting window.

The phase change heat pipe is in a strip shape, and the section of the phase change heat pipe is square.

The beneficial effects of the utility model are that through providing a novel structure, reasonable heat abstractor, utilize the good heat conductivility of copper base circuit board, can establish the structure that does not influence optical effect with less volume and thickness, and the advantage of the higher heat conductivility of phase transition heat pipe, combine together two devices respective advantage and specialty, conduct the heat that sends LED component work rapidly for high heat conduction material's radiator in the field of bringing out the best in each other, the combined action of the multi-disc heat radiation fins and the fan of rethread radiator, with the heat fully, dissipate rapidly, the light decay of LED car light has been inhibited effectively, service life and optical effect have been improved, be a heat dissipation and optical effect good LED car light concurrently.

Drawings

FIG. 1: is a schematic diagram of the decomposition structure of the utility model;

FIG. 2: is a schematic view of the combined structure of the utility model;

FIG. 3: is a schematic view of the combined structure of the LED module and the phase change heat pipe;

FIG. 4: do the utility model discloses a heat conduction principle sketch map of LED module and phase transition heat pipe.

Detailed Description

The present invention will be further described with reference to the drawings.

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, in an exemplary embodiment, the device includes a lamp cap (100), a heat sink (200), a fan (300), a fan shroud (400), an LED module (500), and a phase-change heat pipe (600). Radiator (200) constitute by two shape symmetry's high heat conduction material's heat conductor one (201) and heat conductor two (202) amalgamation, the inboard one side of two heat conductors all is provided with recess (2011), forms a cavity that is used for holding LED module (500) and phase transition heat pipe (600) after the amalgamation.

In order to obtain a better heat dissipation effect, a heat conduction convection conduction mode is utilized, a fan (300) and a fan shield (400) are installed at the end part of the heat radiator (200), a heat conduction radiation mode is also utilized, a plurality of heat dissipation fins (2013) are arranged on the peripheral side walls of one ends, close to the fan (300), of the heat conductor- (201) and the second heat conductor (202) which are spliced to form the heat radiator (200), the heat dissipation area required by the radiation mode is enlarged, and the direction of gaps formed among the heat dissipation fins (2013) is consistent with the air outlet direction of the fan (300).

The radiator (200) is provided with a heat dissipation fin (2013), one end of the heat dissipation fin is provided with a wiring notch (2012) for electric connection, and the other end of the heat dissipation fin is provided with a light-transmitting window (2012) for accommodating the LED element (502) and allowing light to pass through.

As shown in fig. 3, the LED module (500) is composed of a copper-based circuit board (501) and an LED element (502), and in order to obtain a better optical effect, the optical position of the LED element (502) is required to be accurate. In the optical reflector of the car lamp, only one optimal light source position point exists, and the current LED manufacturing technology reason is that the effective light emitting angle of the LED of one LED element (502) is lower than 180 degrees, the use requirement of the car lamp light can be met only by using two or more LED elements (502) in a combined mode, the distance between the rows of the two or more LED elements (502) is required to be as close as possible under the normal working condition, all the LED elements (502) can be in the optimal light source position point in the optical reflector of the car lamp, and even the optimal optical effect is obtained, so the copper-based circuit board (501) adopts the production process of a double-sided circuit, and the purpose is to achieve the optical design requirement of the car lamp with smaller thickness under the condition that the heat dissipation of the LED elements (502) on the copper-based circuit board (501) is enough.

the surface of the copper-based circuit board (501) in the LED module (500) is partially bonded or soldered with one side surface of the phase-change heat pipe (600) by using a high-heat-conductivity adhesive, and the efficiency of heat generated by the LED element (502) and transmitted to the phase-change heat pipe (600) is higher due to the soldering mode, and the mode should be selected for high-requirement products. The phase change heat pipe (600) is in a strip shape, and the section of the phase change heat pipe is square.

As shown in fig. 4, the evaporation end (601) of the phase-change heat pipe is disposed close to the LED element (502) in the LED module (500), and the condensation end (602) of the phase-change heat pipe is opposite to the evaporation end and is away from the LED element (502) in the LED module (500),

The surface of part of a copper-based circuit board (501) and the surface of one side of a phase-change heat pipe (600) are bonded or soldered into a whole by using a high-thermal-conductivity adhesive, and then the integrated circuit board is placed in a cavity formed by splicing grooves (2011) of a radiator (200), a condensation end (602) of the phase-change heat pipe is close to a radiating fin (2013), an evaporation end (601) of the phase-change heat pipe is close to a light-transmitting window (2012) of the radiator (200), an LED element (502) is aligned with the light-transmitting window (2012) of the radiator (200), and light emitted by the LED element (502) is emitted out through the.

The heat conductor- (201) and the second heat conductor (202) which are spliced into the radiator (200) are fixed in a screw mode, the fan (300) is also fixed on the radiator (200) in a screw mode, the fan shield (400) and the lamp cap (100) of the vehicle lamp are pressed and buckled on the radiator (200) in a buckling structure mode, and a power supply lead of the vehicle lamp is electrically connected with the LED module (500) and the fan (300) through the wiring notch (2014).

The outer surfaces of the LED module (500) and the phase change heat pipe (600) are in interference fit with the groove (2011), and high-heat-conductivity silicone grease is coated on the matching surfaces to enhance the thermal contact between the LED module and the phase change heat pipe, so that the heat conduction efficiency is improved. Heat generated during the operation of the LED element (502) is conducted to the radiator (200) and the evaporation end (601) of the phase-change heat pipe through the copper-based circuit board (501), according to the phase-change principle, the heat is rapidly conducted from the evaporation end (601) of the phase-change heat pipe to the condensation end (602) of the phase-change heat pipe according to the heat conduction direction (603), then conducted to the heat dissipation fins (2013), and then towards the heat dissipation direction (604), a part of the heat is dissipated in a radiation mode in the heat conduction process, and more is dissipated in a convection mode through the operation of a fan. Therefore, the whole heat dissipation process is continuously circulated, and normal and efficient work of the LED element (502) is powerfully guaranteed.

The foregoing is only a preferred embodiment of the present invention, and other embodiments are possible according to actual needs and further exploration. However, it should be understood that variations based on the above-described or other embodiments not shown, having the same concept, are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a LED car light with high-efficient heat abstractor which characterized in that: the LED lamp comprises a lamp cap of a vehicle lamp, a radiator, a fan shield, an LED module and a phase change heat pipe; the radiator is formed by splicing a first heat conductor and a second heat conductor which are of high heat conduction materials and have symmetrical shapes, a cavity capable of containing corresponding LED modules and phase change heat pipes is arranged in the radiator, and a fan shield are arranged at the end part of the cavity; the two heat conductors spliced into the radiator are uniformly provided with a plurality of radiating fins and wiring notches on the peripheral side wall of one end close to the fan, the direction of gaps formed among the radiating fins is consistent with the air outlet direction of the fan, and the other end of each radiating fin is uniformly provided with a light-transmitting window which is used for accommodating the LED element and has the function of light passing; the LED module consists of a copper-based circuit board and an LED element, wherein the copper-based circuit board and the phase change heat pipe are bonded or welded into a whole by using a high-heat-conductivity adhesive or soldering tin and then are arranged in a heat conductor of the radiator; a power supply wire of the car lamp is electrically connected with the LED module and the fan through the wiring notch; the lamp cap of the vehicle lamp is arranged on the radiator.

2. the LED vehicle lamp provided with the efficient heat dissipation device as set forth in claim 1, wherein: the radiator is also used as a lamp body; grooves are formed in the inner sides of the first heat conductor and the second heat conductor which are spliced to form the radiator, and a cavity for containing the LED module and the phase change heat pipe is formed after splicing.

3. the LED vehicle lamp provided with the efficient heat dissipation device as set forth in claim 1, wherein: the evaporation end of the phase change heat pipe is arranged close to the LED element in the LED module, the condensation end of the phase change heat pipe is opposite to the evaporation end of the phase change heat pipe and is far away from the LED element in the LED module, and the partial surface of the copper-based circuit board and the surface of one side of the phase change heat pipe are bonded into a whole by high heat conduction adhesive or soldering tin.

4. The LED vehicle lamp provided with the efficient heat dissipation device as set forth in claim 1 or 3, wherein: the LED module and the phase change heat pipe are adhered by a high-heat-conductivity adhesive or welded into a whole by soldering tin and then arranged in a cavity of the radiator, the condensation end of the phase change heat pipe is close to the radiating fin, the evaporation end of the phase change heat pipe is close to the light-transmitting window of the radiator, the LED element is aligned with the window of the radiator, and light emitted by the LED element is emitted out through the light-transmitting window.

5. The LED vehicle lamp provided with the efficient heat dissipation device as set forth in claim 1, wherein: the phase change heat pipe is in a strip shape, and the section of the phase change heat pipe is square.