CN101487574A - High-power LED module frame type road lamp based on heat pipe cooling - Google Patents

Abstract

The invention discloses a high-power LED module frame-type street lamp based on heat pipe heat dissipation, which comprises a high-power LED heat pipe heat dissipation module, a frame device and a street lamp cover; the high-power LED heat pipe heat dissipation module is installed on the frame device; the high-power LED At least one set of LED modules in the heat pipe cooling module is installed on the LED aluminum substrate, and multiple LED modules are connected in series or in parallel. Both ends of the fixing plate are provided with T-shaped grooves, and the middle is provided with a groove for installing a heat pipe. One end of the heat pipe is installed on the arc groove of the heat pipe fixing plate, and the other end is installed with a cooling fin. The invention realizes the integration of the heat pipe into the high-power LED cooling device, effectively solves the heat dissipation problem of the high-power LED in street lamp application, and ensures the working stability and service life of the high-power LED street lamp.

Description

A high-power LED module frame-type street lamp based on heat pipe cooling

technical field

The invention relates to an LED street lamp, in particular to a high-power LED module frame-type street lamp based on a heat pipe for heat dissipation.

Background technique

Traditional road lighting mostly uses high-pressure sodium lamps, but LED street lamps have broad application prospects due to their advantages such as high luminous efficiency, low power consumption, no need for high voltage, and high safety. For example, a high-efficiency 60W LED street lamp can achieve the same lighting effect on the road as a 250W high-pressure sodium lamp, and its energy saving and high efficiency are very obvious.

On the other hand, LED street lights require high brightness and high heat generation, and the outdoor use environment is relatively harsh. If the heat dissipation is not good, it will directly lead to rapid aging of LEDs and reduced stability. Therefore, efficient heat dissipation is one of the urgent problems to be solved in the application of LED street lamps. A kind of LED street lamp disclosed in Chinese patent CN 20104302Y utilizes copper heat pipes and heat sinks to carry out heat transfer and heat dissipation. The copper heat pipe is a copper pipe with a smooth inner wall, and a heat-conducting liquid is poured into the cavity. This patented technology has limited heat transfer and heat dissipation capabilities. It is precisely because the heat dissipation problem has not been solved that the current high-power LED street lamps cannot be put into large-scale use.

In addition to the heat dissipation problem, the reliability of LED lamp modularization is also the main factor affecting the promotion of LED street lamps.

Contents of the invention

The purpose of the present invention is to provide a high-power LED module frame-type street lamp based on the heat dissipation of the heat pipe by utilizing the high-efficiency heat transfer capability of the heat pipe.

The purpose of the present invention is achieved through the following technical solutions:

A high-power LED module frame-type street lamp based on heat pipe heat dissipation, comprising a high-power LED heat pipe cooling module, a frame device and a street lamp cover; the high-power LED heat pipe cooling module is installed on the frame device; the street lamp cover is installed on the frame device The curved glass light-transmitting cover and protective cover on the top constitute a closed body, and the high-power LED heat pipe cooling module is installed in the street lamp outer cover; , heat pipe fixing plate, heat pipe and heat dissipation fins to form a module; in the high-power LED heat pipe heat dissipation module, at least one set of LED modules is installed on the LED aluminum substrate, and multiple LED modules are connected to the power supply in series or in parallel to form a path. The heat sink of the LED is installed closely on the LED aluminum substrate, and the LED aluminum substrate is installed on the heat pipe fixing plate. There are T-shaped grooves at both ends of the heat pipe fixing plate, and a channel for installing the heat pipe in the middle. The light-transmitting cover is semicircular. Shape, with T-shaped protrusions at both ends, the high-power LED group is fixed and sealed through the T-shaped protrusions and the corresponding T-shaped grooves of the heat pipe fixing plate; one end of the heat pipe is installed on the arc groove of the heat pipe fixing plate, and the other Install cooling fins on one end.

The frame device is an arc frame device or a plane frame device. The curved surface frame device includes fixed side beams, straight beams, curved beams, right-angle supports, twisted angle supports and module buckling parts; the fixed side beams are connected to the straight beams through the right-angle supports, and the two arc surfaces are connected through the twisted angle supports. Beams; the curved beams are equipped with module crimping parts at certain intervals, which are used to fix the high-power LED heat pipe cooling modules. The plane frame device includes two fixed side beams, straight beams, two plane beams, right-angle supports and module crimping parts; the straight beams and two plane beams are connected by the right-angle supports of the fixed side beams; A set of crimping parts, used to fix the high-power LED heat pipe cooling module.

The two sides of the channel of the heat pipe fixing plate are provided with heat dissipation ribs for assisting heat dissipation.

The heat dissipation fins are fixed on the heat pipe fixing plate through the fin anti-rotation piece.

Compared with the prior art, the present invention has the following characteristics:

(1) The device uses heat pipes for heat transfer and cooling fins for heat dissipation. It has high-efficiency heat transfer and heat dissipation capabilities, and can effectively solve the problem of heat dissipation for high-power LEDs, especially for single LEDs with power above 3W.

(2) The device adopts the integrated installation of high-power LED, LED aluminum substrate, heat pipe fixing plate, heat pipe and cooling fins, which can effectively transfer the heat emitted by high-power LED to the heat pipe. The heat pipe relies on its strong heat transfer capacity The heat is efficiently transferred to the cooling fins, and the heat is dissipated through the heat exchange between the cooling fins and the air.

(3) The outer cover that seals the LED in the device has a specific optical design, which can increase the intensity and range of the projected light of the LED, thereby making full use of the light effect of the LED.

(4) The device adopts modularization, thereby saving manufacturing costs, convenient assembly and disassembly, assembly and maintenance, and good adaptability and high reliability.

(5) The arc-shaped frame device of the device has arc-surface characteristics, which can effectively expand the lighting range, and the plane frame-type frame device can change the length of the beam arbitrarily, so that different numbers of high-power LED heat pipes can be installed according to actual needs. Modules to achieve different lighting power needs.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the curved frame-type street lamp device in Embodiment 1;

Fig. 2 is a schematic diagram of the installation structure of the high-power LED heat pipe cooling module 6 in Fig. 1;

Fig. 3 is the schematic structural view of the planar frame type street lamp device of embodiment 2;

Fig. 4 is a schematic diagram of the installation structure of the high-power LED heat pipe cooling module 6 in Fig. 3;

Fig. 5 is a structural overall schematic diagram of the high-power LED heat pipe cooling module of the present invention;

FIG. 6 is a schematic cross-sectional view of A-A in FIG. 5 .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and implementation, but the embodiments of the present invention are not limited thereto.

Example 1

As shown in Figures 1 and 2, a high-power LED module curved frame street lamp based on heat pipe cooling is composed of a high-power LED heat pipe cooling module 6, a curved frame device and a street lamp cover; the curved frame device includes a fixed side Beam 7, straight beam 12, curved beam 4, right angle support 10, torsion angle support 9 and module buckle 3. The fixed side beam 7 connects the straight beam 12 through the L-shaped right angle support 10, and connects the two arc beams 4 through four L-shaped torsion angle supports 9, and the fixed side beam 7 fixes the straight beam 12 and the arc beam 4 It can also be connected to the street light pole. The curved beams 4 are equipped with module crimping parts 3 at regular intervals to fix the high-power LED heat pipe cooling module 6. The openings are flexible, and the high-power LED heat pipe cooling module can be quickly installed and disassembled. Both the straight beam 12 and the curved beam 4 can be changed in length according to the actual light intensity and range of light. The curved beam has a curved shape, so that the street lamp device can be equipped with different numbers of high-power LED heat pipe cooling modules 6 . The LED power supply 11 is installed on the straight beam 12, the power supply 11 can be fixed on the straight beam 12 with ordinary screws, and multiple LED modules are connected in series or in parallel with the power supply 11 to form a path. A plurality of high-power LED heat pipe cooling modules 6 are installed side by side on the arc beam 4 of the frame device, and are fastened and installed by the module buckle 3 of the arc beam 4; the street lamp outer cover includes an arc glass light-transmitting cover 1 and a protective Cover 8 is all installed on the fixed side beam 7 of frame device, plane glass translucent cover 1 and protective cover 8 form closed cavity, and high-power LED heat pipe cooling module 6 is installed in this cavity. Both the curved glass light-transmitting cover 1 and the flat glass light-transmitting cover can increase the intensity and range of the LED projected light, and make full use of the LED light effect. The protective cover 8 mainly plays the role of dust-proof, waterproof and sun-proof, and is used to protect the heat dissipation module and circuit structure of the high-power LED heat pipe.

The module buckling part 3 is a fastening device provided with an open end of a bayonet and an elastic metal sheet rotating around a fixed axis, which is convenient for pressing the LED module and disassembling it. The curved beam 4 is a hollow aluminum profile with curvature. The power supply 11 is an LED constant current driver. The right-angle support 10 is a fixed structure with two movable parts in the form of a right angle. The torsion angle branch 9 is a fixed structure of two movable parts in the form of an acute angle or an obtuse angle.

As shown in Figures 5 and 6, the high-power LED heat pipe heat dissipation module 6 includes a high-power LED group 18, an LED aluminum substrate 19, a light-transmitting cover 17, a heat pipe fixing plate 16, a heat pipe 14, heat dissipation fins 13 and fin anti-rotation piece 15. A plurality of LEDs in the high-power LED group 18 are evenly installed on the LED aluminum substrate 19, wherein the heat sink of the LED is closely mounted on the LED aluminum substrate 19, and the LED aluminum substrate 19 is installed on the heat pipe fixing plate 16, and the heat pipe fixing plate 16 is two The end is provided with a T-shaped groove, and the middle is provided with an arc groove for installing the heat pipe 14 (it can be multiple arc grooves, that is, for installing multiple heat pipes 14), and the two sides of the arc groove are provided with auxiliary heat dissipation Radiating ribs, heat pipe fixing plate 16 are made of aluminum profile. The light-transmitting cover 17 is semicircular, with T-shaped protrusions at both ends, and the high-power LED group 18 is fixed and sealed through the T-shaped protrusions and the corresponding T-shaped grooves of the heat pipe fixing plate 16 . The high-power LED group 18 is encapsulated and protected by a light-transmitting outer cover 17 as a whole. The light-transmitting outer cover 17 can be waterproof and dustproof, protect the heat dissipation module and circuit structure of the high-power LED heat pipe, and can increase the projected light intensity and range of the LED group 18 to make full use of the light efficiency of the high-power LED group. One end of the heat pipe 14 is installed on the arc groove of the heat pipe fixing plate 16, and the other end is installed with an aluminum heat dissipation fin 13, and the heat dissipation fin 13 is connected to the heat pipe 14 by screw locking, and the heat dissipation fin 13 is passed through the fin anti-rotation piece 15 is fixed on the heat pipe fixing plate 16. One end of the fin anti-rotation member 15 is fixed on the heat dissipation fin, and one side is fixed on the heat pipe fixing plate, which plays the role of fixing and preventing the heat dissipation fin from rotating around the heat pipe. The heat generated by the work of the high-power LED group 18 is exported to the heat pipe fixing plate 16 through the LED aluminum substrate 19, and the heat is transferred to the heat dissipation fins 13 by the heat pipes 14 connected to the heat pipe fixing plate 16, and the heat dissipation fins 13 rapidly dissipate the heat pipe 14. The transferred heat is dissipated into the air. Simultaneously, the cooling rib structure of the heat pipe fixing plate 16 has an auxiliary heat dissipation effect, and conducts the heat released by the LED operation to the heat pipe fixing plate, which can not only assist heat dissipation through the cooling ribs of the heat pipe fixing plate, but also conduct to the heat pipe through the cooling fins at the same time. Heat dissipation, so that the heat generated by high-power LED work can be conducted out in time, ensuring that the LED work can be within the rated working range, thereby greatly reducing light decay and prolonging the service life of LED street lights. The length of the heat pipe and the number of cooling fins can be used to produce the corresponding heat dissipation power according to the total power of the high-power LED group. In this example, the high-power LED heat pipe cooling module 6 can package different quantities and different types of high-power LED lamp beads according to requirements, and this module is an independent working module, which can work alone for lighting, or can be combined by multiple modules for lighting , to facilitate assembly and disassembly, combination and maintenance.

Example 2

As shown in Figures 3 and 4, a high-power LED module planar frame street lamp based on heat pipe cooling is composed of a high-power LED heat pipe cooling module 6, a planar frame device and a street lamp cover. Several high-power LED heat pipe cooling modules 6 are installed side by side on the plane beam 5 of the frame device, and are fastened and installed by the module buckle 3 on the plane beam 5; the street lamp outer cover includes a plane glass light-transmitting cover 2 and a protective cover 8, All are installed on the fixed edge beam 7 of frame device.

The planar frame device includes two fixed side beams 7 , straight beams 12 , two plane beams 5 , right-angle supports 10 and module crimping parts 3 . The fixed side beam 7 connects the straight beam 12 and the two plane beams 5 through six L-shaped right-angle supports 10. The fixed side beam 7 plays the role of fixing the straight beam 12 and the plane beam 5, and can be connected to the street light pole. The planar beam 5 can be a non-bending square aluminum profile or a non-bending circular aluminum profile, on which module buckling parts 3 are housed at certain intervals to fix the high-power LED heat pipe cooling module 6 . Both the straight beam 12 and the planar beam 5 can be arbitrarily changed in length according to the actual light intensity and range of light, so that the street lamp device can be equipped with different numbers of high-power LED heat pipe cooling modules 6 . Install LED dedicated power supply 11 and other circuit structures on the straight beam 12 .

The structure of the high-power LED heat pipe cooling module 6 is the same as that in Embodiment 1.

Claims (6)

1, a kind of high-power LED module frame type road lamp based on heat pipe heat radiation is characterized in that: comprise great power LED heat pipe heat radiation module, frame mounting and street lamp outer cover; Great power LED heat pipe heat radiation module is installed on the frame mounting; The street lamp outer cover constitutes obturator by the globoidal glass diffuser and the protective cover that are installed on the frame mounting, and great power LED heat pipe heat radiation module is installed in the street lamp outer cover; Described great power LED heat pipe heat radiation module is formed module by great power LED, LED aluminium base, light transmission outer cover, heat pipe fixed head, heat pipe and radiating fin; At least one group of led module is installed on the LED aluminium base in the great power LED heat pipe heat radiation module, a plurality of led modules connect the formation path by the mode of serial or parallel connection with power supply, heat sink being close to of LED is installed on the LED aluminium base, the LED aluminium base is installed on the heat pipe fixed head, heat pipe fixed head two ends are provided with T type groove, the centre is provided with the conduit that heat pipe is installed, light transmission outer cover is semicircle, two ends are provided with T type projection, with the corresponding T type of heat pipe fixed head groove the great power LED group are carried out fixing seal by T type projection; One end of heat pipe is installed on the circular arc conduit of heat pipe fixed head, and the other end is installed radiating fin.

2, a kind of high-power LED module frame type road lamp based on heat pipe heat radiation according to claim 1 is characterized in that: described frame mounting is arc-shaped frame device or plane framework device.

3, a kind of high-power LED module frame type road lamp based on heat pipe heat radiation according to claim 2 is characterized in that: described arc-shaped frame device comprises that fixedly side bar, straight crossbeam, cambered surface crossbeam, right angle prop up, torsional angle is propped up and the module buckling piece; Fixedly side bar props up by the right angle and connects straight crossbeam, and props up connection two cambered surface crossbeams by torsional angle; All the module buckling piece is housed on the cambered surface crossbeam, is used for fixing great power LED heat pipe heat radiation module by certain interval.

4, a kind of high-power LED module frame type road lamp based on heat pipe heat radiation according to claim 2 is characterized in that: described plane framework device comprise two fixedly side bar, straight crossbeam, two plane crossbeams, the right angle props up and the module buckling piece; Fixedly the side bar right angle props up and connects straight crossbeam and two plane crossbeams, by certain interval the module buckling piece is housed on the crossbeam of plane, is used for fixing great power LED heat pipe heat radiation module.

5, a kind of high-power LED module frame type road lamp based on heat pipe heat radiation according to claim 1, it is characterized in that: the conduit both sides of described heat pipe fixed head are provided with the radiated rib that is used for auxiliary heat dissipation.

6, a kind of high-power LED module frame type road lamp based on heat pipe heat radiation according to claim 1, it is characterized in that: described radiating fin is fixed on the heat pipe fixed head by fin anti-rotation moving part.

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