CN201368435Y - Heat radiating structure of LED (light emitting diode) lighting lamp - Google Patents

Abstract

The utility model relates to a heat dissipation structure of a light-emitting diode lighting fixture, which includes a light bar metal profile bar and a metal lamp frame. Pressed on the metal lamp frame, the metal profiled strip of the light bar is connected together with the circuit board on which the light-emitting diodes are installed. The utility model has good heat dissipation effect, can increase the service life of the LED, and can reduce the attenuation of the LED, so that the high-power LED can be well applied to lighting and decorative lamps.

Description

Heat Dissipation Structure of LED Lighting Lamps

technical field

The utility model relates to a heat dissipation structure of a light-emitting diode lighting fixture.

Background technique

As a lighting source, light-emitting diodes (LEDs) have many advantages such as energy saving, environmental protection, long life, high energy conversion efficiency, good color temperature and color consistency, and have been applied to lighting and decorative lights in more and more places. Because the brightness of a single LED is not enough, the overall structure of LED display is generally used in the production of lamps, but the biggest problem with this method is that the heat dissipation is not good. Due to the high temperature, it is easy to cause the LED lamp to decay quickly and die easily. Heat dissipation is one of the bottlenecks in the development of semiconductor lighting applications.

Contents of the invention

The purpose of the utility model is to provide a heat dissipation structure of a light-emitting diode lighting fixture with a good heat dissipation effect for the problem of poor heat dissipation effect of the existing LED lamps.

The purpose of this utility model is achieved in the following way: the utility model includes a light bar metal profile bar and a metal lamp frame, the metal profile bars of the light bar are two to dozens of pieces, fixed on the top of the metal light frame, and its bottom surface is tightly pressed On the metal light frame, the metal profile strip of the light bar is connected together with the circuit board on which the light emitting diode is installed.

As a preferred solution, the metal strip of the light bar is a grooved metal strip, and the circuit board is connected to the top of the groove of the grooved metal strip. As a better solution, the groove of the metal strip of the light bar is filled with thermal conductive glue.

As a preferred solution, the metal lamp holder is a frame structure, which is composed of metal strips connected by the lamp holder. As a better solution, the metal profile bar of the lamp holder is a hollow metal profile bar, and a vertical through hole is opened on the metal profile bar of the lamp frame.

The technical effect of the utility model lies in: the utility model enables the heat energy generated by the LED light source to be quickly transmitted to the metal profile strip and the metal lamp frame of the light bar, has a good heat dissipation effect, and can ensure that the LED lamp works below 60 degrees. The utility model can improve the service life of the LED, reduce the attenuation of the LED, and make the high-power LED can be well applied to lighting and decorative lamps.

Description of drawings

Fig. 1 is a front view of the LED light bar in the embodiment.

Fig. 2 is a schematic structural view of the LED light bar in the embodiment before installing the plastic parts at the head end and the plastic parts at the tail end.

Fig. 3 is a schematic structural view of the embodiment before installing the LED light bar and the interface protective plastic cover.

Fig. 4 is a schematic structural view of the embodiment during the assembly process.

Fig. 5 is a schematic structural diagram of the embodiment.

Fig. 6 is a sectional view of the embodiment.

Detailed ways

Referring to Fig. 1 to Fig. 6, the present embodiment is an assembled light-emitting diode lamp (referred to as "assembled LED lamp") adopting the heat dissipation structure of the present invention.

Referring to Fig. 1 and Fig. 2, the light-emitting diode light bar (referred to as "LED light bar") in this embodiment includes a high-power light-emitting diode (referred to as "high-power LED") 1, an aluminum-based circuit board 2, and an aluminum-shaped light bar. Strip 4, transparent plastic light bar cover 5, head-end plastic parts 19, tail-end plastic parts 21, aluminum-based circuit board 2 is strip-shaped, and in this embodiment, thirteen high-power light-emitting lamps are installed on an aluminum-based circuit board 2 Diodes 1 are arranged longitudinally along the aluminum-based circuit board 2, and the aluminum-shaped strip 4 of the light bar is a groove-shaped aluminum-shaped bar, and there are slots 9 on both sides of the groove, and the two sides of the aluminum-based circuit board 2 are inserted into the lamp The two slots 9 of the strip aluminum strip 4 are installed on the top of the groove of the groove-shaped aluminum strip, and the groove is filled with thermal conductive glue 3, and the heat generated by the high-power light-emitting diode 1 passes through a part of the aluminum-based circuit board 2 It is directly transmitted to the aluminum strip 4 of the light bar, and part of it is transmitted to the aluminum strip 4 of the light bar through the heat-conducting adhesive 3. The outer walls on both sides of 4 are provided with card positions 8, and the inner walls on both sides of the transparent plastic light bar cover 5 are provided with buckles. Fix the transparent plastic light strip cover 5 on the aluminum strip 4 of the light strip, and a sealant strip 6 is installed in the card position 8 to play a waterproof role. The plastic parts 19 at the head end and plastic parts 21 at the tail end are respectively located At both ends of the strip, there are screw positions 7 on the aluminum strip 4 of the light bar. The plastic part 19 at the head end and the plastic part 21 at the tail end are respectively connected with the head end and the tail end of the aluminum strip 4 of the light bar through screws. A light bar power interface 22 is fixed inside the head-end plastic part 19, and the light bar power interface 22 is connected with the aluminum-based circuit board 2 through wires.

Referring to Fig. 3 to Fig. 5, this embodiment includes a metal light frame, an interface fixing plastic part 12, a light bar fixing plastic part 15, an interface protective plastic cover 20 and five LED light bars. The outer peripheral light frame aluminum strip 14 is connected with the light frame aluminum strip 16 arranged horizontally in the frame, the interface fixing plastic part 12 and the light bar fixing plastic part 15 are respectively fixed on the top and bottom ends of the metal light frame with screws, The interface fixing plastic part 12 is provided with a light bar interface card position 13, and a copper sheet interface is provided in each light bar interface card position 13. The number of light bar interface card positions 13 is equal to the number of LED light bars. The strip fixing plastic part 15 is provided with light strip clamping positions, the number of which is also equal to the number of LED light strips. Five light emitting diode light strips are placed side by side on the metal light stand, and the bottom surface of the light strip aluminum strip 4 is tightly pressed against On the metal light frame, the head end and tail end of each LED light bar are installed in the light bar interface card position 13 of the interface fixing plastic part 12 and the light bar card position of the light bar fixing plastic part 15 respectively, and the LED light bar The light bar power interface 22 is in contact with the copper sheet interface in the light bar interface card position 13, and the power cord inlet 10 is provided on the interface fixing plastic part 12, and is located on the light bar interface card position 13 on the interface fixing plastic part 12. Waterproof sealing strips 17 and 18 are also installed on the front and back sides, the interface protective plastic cover 20 is fixed on the top of the interface fixed plastic part 12, and screw holes 11 are provided on the interface fixed plastic part 12, the interface protective plastic cover 20 and the interface The fixed plastic parts 12 are fixed together with screws.

Referring to Fig. 3 and Fig. 6, the heat dissipation structure in the embodiment includes the aluminum strip 4 of the light bar and the metal light frame, which play the role of installing the circuit board and the light bar respectively, and have the function of heat dissipation at the same time: the aluminum strip 4 of the light bar It is groove-shaped and filled with thermal conductive glue 3 in its groove, which has good heat dissipation performance; the metal light frame is a frame structure, which is conducive to air circulation and heat dissipation, and the aluminum profile strips of the light frame forming the metal light frame are hollow aluminum profiles. And there are many grooves on its hollow inner wall to increase the heat dissipation area, and vertical through holes 23 are also opened on the aluminum profile bar of the lamp frame to facilitate internal air convection. An aluminum core bar is also added to the hollow of the aluminum profile bar of the frame, so that the contact surface between the aluminum profile bars of the lamp frame is larger so as to facilitate heat conduction; the bottom surface of the aluminum profile bar 4 of the light bar is pressed tightly on the metal lamp frame and connected The light frame aluminum profile bar 16 of setting is vertical (also can be angled). The above structure enables the heat generated by the high-power light-emitting diode 1 to be fully transmitted from the aluminum-based circuit board 2 to the aluminum-shaped strip 4 of the light bar, and then to the entire metal light frame, so that the heat is quickly conducted out, and the heat dissipation effect is excellent, thereby ensuring The working temperature of high-power LEDs is kept within 60 degrees, which improves the service life of LEDs and reduces the attenuation of LEDs, so that high-power LEDs can be well applied to lighting and decorative lights.

The material of the metal lamp frame in the utility model can be aluminum, aluminum alloy or copper and other metals with good thermal conductivity, so the aluminum profile strip of the lamp frame in the embodiment can be replaced by the metal profile bar of the lamp frame made of aluminum alloy or copper. The aluminum-shaped light bar in the embodiment can also be replaced by a metal-shaped light bar made of aluminum alloy or copper.

In the utility model, the number of LEDs installed on the circuit board in the LED light bar and the number of LED light bars are determined according to the needs. The number of LED light bars is generally two to dozens, and the metal type of the light bar The number is consistent with the number of LED strips.

Claims (10)

1. A heat dissipation structure for light-emitting diode lighting fixtures, characterized in that: it includes a light bar metal profile and a metal light frame, and the light bar metal profile is two to dozens, fixed on the top of the metal light frame, and The bottom surface is tightly pressed on the metal light frame, and the circuit board equipped with light-emitting diodes is installed on the metal profile bar of the light bar. 2. The heat dissipation structure of LED lighting fixtures according to claim 1, characterized in that: the metal profile of the light bar is a grooved metal profile, and the circuit board installed with the LED is mounted on the grooved metal profile Grooved top of the bar. 3. The heat dissipation structure of LED lighting fixtures according to claim 2, characterized in that: slots are provided on both side walls of the groove of the metal strip of the light bar, and the circuit board on which the LEDs are installed The two sides of the light bar are inserted into the two slots of the metal strip of the light bar. 4. The heat dissipation structure of the LED lighting fixture according to claim 2 or 3, characterized in that: the groove of the metal strip of the light bar is filled with thermal conductive glue. 5. The heat dissipation structure of LED lighting fixtures according to claim 1, 2 or 3, characterized in that: the metal lamp holder is a frame structure, which is composed of metal strips of the lamp holder. 6 . The heat dissipation structure of LED lighting fixtures according to claim 5 , wherein the metal profile strip of the light frame is a hollow metal profile bar, and a vertical through hole is opened on the metal profile bar of the light frame. 7 . 7 . The heat dissipation structure of LED lighting fixtures according to claim 6 , wherein grooves are formed on the hollow inner walls of the hollow metal profiles. 7 . 8. The heat dissipation structure of LED lighting fixtures according to claim 6, wherein an aluminum core strip is added to the hollow of the aluminum profile strip of the lamp frame at the interface of the adjacent aluminum profile strips of the lamp frame. 9. The heat dissipation structure of LED lighting fixtures according to claim 1, 2 or 3, characterized in that: the metal profile of the light bar is an aluminum profile of the light bar, and the metal light frame is an aluminum light frame. 10. The heat dissipation structure of an LED lighting fixture according to claim 5, wherein the metal strip of the lamp holder is an aluminum strip of the lamp holder.

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