WO2012040925A1

WO2012040925A1 - Led street lamp using thermoelectric cooling device

Info

Publication number: WO2012040925A1
Application number: PCT/CN2010/077502
Authority: WO
Inventors: 邓树兴
Original assignee: 李翔
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2012-04-05

Abstract

An LED street lamp using a thermoelectric cooling device includes a plurality of LEDs (1), an LED substrate (2), a metal heat-collecting plate (3), and a metal heat-dissipating device with fins (7). The LEDs (1) are mounted on the LED substrate (2), and the heat-collecting plate (3) tightly contacts the LED substrate (2). A thermal insulation material layer (4) and a thermoelectric cooler (6) are mounted between the heat-collecting plate (3) and the heat-dissipating device (7). The cooling surface of the thermoelectric cooler (6) contacts the heat-collecting plate (3), and the heat-dissipating device (7) is mounted above the heating surface of the thermoelectric cooler (6). The LEDs (1) of the LED street lamp can also be directly mounted on a ceramic circuit board (10), and the thermal insulation material layer (4) and the thermoelectric cooler (6) are mounted between the ceramic circuit board (10) and the heat-dissipating device (7).

Description

LED street light using semiconductor refrigeration device

Technical field

The invention relates to an LED street lamp, in particular to an LED street lamp using a semiconductor refrigeration device.

Background technique

LED has high luminous efficiency, long life, easy to intelligent management, energy saving and environmental protection. With the improvement of LED stability, high power performance and cost reduction, street lamps have been made and applied in urban roads and other lighting fields. .

In order to solve the above technical problem, the technical solution of the present invention is to provide an LED street lamp using a semiconductor refrigeration device, comprising a plurality of LED lighting tubes, an LED substrate, a metal heat collecting plate, and a metal fin type heat sink, wherein the LED The light-emitting tube is mounted on the LED substrate, and the metal heat collecting plate is closely attached to the LED substrate; a heat insulating material layer and a semiconductor refrigerator are mounted between the metal heat collecting plate and the metal fin heat sink, and the semiconductor refrigerator is The cooling surface is attached to the metal heat collecting plate, and the metal fin type heat sink is mounted above the heat generating surface of the semiconductor refrigerator.

Compared with the prior art, the LED street lamp using the semiconductor refrigeration device has a heat insulating material layer and a semiconductor cooler mounted between the metal heat collecting plate and the metal fin heat sink, so that the LED light pipe is cooled and dissipated from the LED light pipe. Passive change to active and good effect, high reliability, simple installation, compact structure, light weight and long working life.

technical problem

The technical problem to be solved by the present invention is to provide an LED street lamp using a semiconductor refrigeration device, which has good heat dissipation, simple installation, compact structure, light weight and long working life.

Another technical problem to be solved by the present invention is to provide an LED using a semiconductor refrigeration device. The street lamp has good heat dissipation, simple installation, compact structure, light weight and long working life.

Technical solution

Providing an LED street lamp using a semiconductor refrigeration device, comprising a plurality of LED light-emitting tubes, an LED substrate, a metal heat collecting plate, and a metal fin-type heat sink, wherein the LED light-emitting tube is mounted on the LED substrate, the metal heat collecting plate and The LED substrate is closely attached; a heat insulating material layer and a semiconductor refrigerator are installed between the metal heat collecting plate and the metal fin heat sink, and the cooling surface of the semiconductor cooler is attached to the metal heat collecting plate, and the metal fin The chip heat sink is mounted above the heat generating surface of the semiconductor refrigerator.

Providing an LED street lamp using a semiconductor refrigeration device, comprising a plurality of LED light-emitting tubes, a heat-conductive ceramic-based circuit board, and a metal fin-type heat sink, wherein the LED light-emitting tubes are directly mounted on the heat-conductive ceramic-based circuit board; A layer of heat insulating material and a semiconductor cooler are mounted between the ceramic-based circuit board and the metal fin-type heat sink, and the cooling surface of the semiconductor cooler is attached to the heat-conductive ceramic-based circuit board, and the metal fin-type heat sink is mounted on Above the heating surface of the semiconductor cooler.

Beneficial effect

Compared with the prior art, the LED street lamp adopting the semiconductor refrigeration device has a heat insulating material layer and a semiconductor refrigerator mounted between the heat conductive ceramic base circuit board and the metal fin heat sink, so that the light emitting tube is cooled and dissipated from the light source. Passive change to active and good effect, high reliability, simple installation, compact structure, light weight and long working life.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic cross-sectional view showing an embodiment of an LED street lamp using a semiconductor refrigeration device of the present invention.

2 is a schematic cross-sectional view showing another embodiment of an LED street lamp using a semiconductor refrigeration device of the present invention.

Figure 3 is a block diagram of the electrical principle of the embodiment of Figures 1 and 2.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

1 is a preferred embodiment of an LED street lamp using a semiconductor refrigeration device according to the present invention. The LED street lamp includes a plurality of LED light-emitting tubes 1, an LED substrate 2, a metal heat collecting plate 3, and a metal fin type. The heat sink 7, the outer casing 8 and the transparent plastic plate 9, the LED light-emitting tube 1 is mounted on the LED substrate 2, the metal heat collecting plate 3 and the LED substrate 2 are closely attached, the metal heat collecting plate 3 and the metal fin-type heat sink 7 is the radiator inside the LED street light.

An asbestos thermal insulation layer 4 and a semiconductor refrigerator 6 are installed between the metal heat collecting plate 3 and the metal fin type heat sink 7. When the cooling surface of the semiconductor refrigerator 6 is coated with a thermal conductive silica gel and a metal set The hot plate 3 is closely attached, and the metal fin type heat sink 7 is mounted above the heat generating surface of the semiconductor refrigerator 6.

The asbestos insulation layer 4 does not cause heat exchange between the cooling surface of the semiconductor refrigerator 6 and the heat generating surface, and the asbestos insulation layer 4 may be another layer of heat insulating material.

The LED substrate 2, the metal heat collecting plate 3, the asbestos insulating layer 4, the semiconductor cooler 6 and the metal finned heat sink 7 are connected as a substrate by two or more phenolic plastic connecting columns 5, the phenolic plastic The connecting post 5 can also be a plastic connecting post with a small heat transfer coefficient. The phenolic plastic connecting post 5 can also prevent heat conduction between the cooling surface of the semiconductor cooler 6 and the heat generating surface. The base body is connected to the LED street lamp metal casing 8 as a whole by a plurality of metal screws, and a transparent plastic plate 9 is further mounted on the LED street lamp metal casing 8 to form an LED street lamp using a semiconductor refrigeration device.

Referring to FIG. 2, another preferred embodiment of the LED street lamp using the semiconductor refrigeration device of the present invention is different from the embodiment shown in FIG. 1 in that the LED lighting tube 1 of the embodiment shown in FIG. On the LED substrate 2, the metal heat collecting plate 3 is closely attached to the LED substrate 2, and the LED light-emitting tube 1 of the embodiment shown in FIG. 2 is directly mounted on the heat-conductive ceramic-based circuit board 10, and the metal heat collecting plate 3 is not required. .

The LED light-emitting tube 1 of the LED street lamp is directly mounted on the heat-conductive ceramic-based circuit board 10, the heat-conductive ceramic-based circuit board 10 is closely attached to the cooling surface of the semiconductor refrigerator 6, and the metal fin-type heat sink 7 is mounted on Above the heat generating surface of the semiconductor refrigerator 6, the metal fin type heat sink 7 is a heat sink inside the LED street lamp.

Referring to FIG. 3, a power supply circuit 11 is disposed in the lamp body of the LED street lamp using the semiconductor refrigeration device, and the device directly connected to the power supply circuit 11 has an LED driver 12 and a DC power supply 14 of the semiconductor refrigerator 6, which are respectively connected. The LED lighting tube group 13 and the power supply connector 15 of the semiconductor refrigerator 6 wherein the semiconductor refrigerator 6 consumes about 20% of the total power of the LED lighting tube group 13 and is consumed by the current LED street lamp fan cooling system. The power is quite equal. The power circuit 10 is connected to the power supply grid through the "L" and "N" wires to ensure efficient operation of the LED street lamps.

After the LED street lamp is energized, the plurality of LED lighting tubes 1 are cooled and thermally conducted by the cooling surface of the semiconductor cooler 6 via the LED substrate 2 and the metal heat collecting plate 3 or the thermally conductive ceramic-based circuit board 10, and the semiconductor cooler 6 is cooled. The heat-generating surface is subjected to natural convection and radiation heat dissipation through the metal fin-type heat sink 7 and the LED street lamp metal casing 8 and the outer space of the LED street lamp, thereby realizing the active heat dissipation of the LED light-emitting tube 1.

The LED street lamp using the semiconductor refrigeration device is provided with an asbestos insulation layer 4 and a semiconductor refrigerator 6 so that the illumination tube 1 has good cooling and heat dissipation effects, high operational reliability, simple overall installation, compact structure, light weight, and work. Long life, making LED street lighting more practical, reliable, convenient and popular.

The heat dissipation method used in the LED street lamp using the semiconductor refrigeration device of the present invention is also applicable to other high power LED facilities.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Embodiments of the invention

Industrial applicability

Sequence table free content

Claims

An LED street lamp adopting a semiconductor refrigeration device, comprising a plurality of LED light-emitting tubes, an LED substrate, a metal heat collecting plate and a metal fin-type heat sink, wherein the LED light-emitting tube is mounted on the LED substrate, the metal heat collecting plate and the LED The substrate is closely attached; the surface of the metal heat collecting plate and the metal fin heat sink is mounted with a heat insulating material layer and a semiconductor refrigerator, and the cooling surface of the semiconductor cooler is attached to the metal heat collecting plate. The metal fin heat sink is mounted above the heat generating surface of the semiconductor refrigerator.
The LED street lamp using a semiconductor refrigeration device according to claim 1, wherein the heat insulating material layer is an asbestos heat insulating layer.
The LED street lamp using the semiconductor refrigeration device according to claim 2, wherein the cooling surface of the semiconductor refrigerator is coated with a thermal conductive silica gel and adhered to a metal heat collecting plate, and the heat generating surface of the semiconductor refrigerator After coating the thermal silica gel, it is attached to the metal fin heat sink.
The LED street lamp using the semiconductor refrigeration device according to claim 3, wherein the LED substrate, the metal heat collecting plate, the asbestos heat insulating layer, the semiconductor cooler, and the metal fin type heat sink pass heat transfer coefficient Small plastic connecting posts are connected to the base.
The LED street lamp using the semiconductor refrigeration device according to claim 4, wherein the plastic connecting column is a phenolic plastic connecting column.
The LED street lamp using a semiconductor refrigeration device according to claim 5, wherein said LED street lamp further comprises a casing, said substrate being coupled to said casing.
An LED street lamp adopting a semiconductor refrigeration device, comprising a plurality of LED light-emitting tubes, a heat-conductive ceramic-based circuit board, and a metal fin-type heat sink, wherein the LED light-emitting tubes are directly mounted on the heat-conductive ceramic-based circuit board; A heat insulating material layer and a semiconductor refrigerator are mounted between the heat conductive ceramic base circuit board and the metal fin type heat sink, and the cooling surface of the semiconductor cooler is attached to the heat conductive ceramic base circuit board, and the metal fin type heat sink is attached It is mounted above the heat generating surface of the semiconductor refrigerator.
The LED street lamp using a semiconductor refrigeration device according to claim 7, wherein the heat insulating material layer is an asbestos heat insulating layer.
The LED street lamp using the semiconductor refrigeration device according to claim 8, wherein the cooling surface of the semiconductor cooler is coated with a thermal conductive silica gel and then attached to the thermally conductive ceramic-based circuit board.
The LED street lamp using the semiconductor refrigeration device according to claim 9, wherein the LED substrate, the thermally conductive ceramic-based circuit board, the asbestos insulation layer, the semiconductor cooler, and the metal fin-type heat sink pass heat transfer A plastic connecting post with a small coefficient is connected to the base.
The LED street lamp using the semiconductor refrigeration device according to claim 10, wherein the plastic connecting column is a phenolic plastic connecting column.
The LED street lamp using a semiconductor refrigeration device according to claim 11, wherein said LED street lamp further comprises a casing, and said base body is coupled to said casing.