CN101737751A

CN101737751A - High-efficiency radiating LED street lamp

Info

Publication number: CN101737751A
Application number: CN200810153189A
Authority: CN
Inventors: 牛萍娟; 高志刚
Original assignee: TIANJIN POLYTECHNIC HIYU SEMICONDUCTOR LIGHTING CO Ltd
Current assignee: TIANJIN POLYTECHNIC HIYU SEMICONDUCTOR LIGHTING CO Ltd
Priority date: 2008-11-21
Filing date: 2008-11-21
Publication date: 2010-06-16

Abstract

The invention relates to a high-efficiency radiating LED street lamp, which is characterized in that: heat dissipation fins are arranged along a protrusion of an upper surface of a lamp body; the contour of the upper surface of each dissipation fin is in a raised circle, an elliptic type or other curve types; the raised upper surface can allow air to fully enter insides of the fins so as to enhance convective chimney effect and take away more heat; the direction of the heat dissipation fins is vertical to the longitudinal direction of the lamp body so as to realize shortest distance of the air flowing in the fins; positions on the lamp body vertical to each fin at a certain distance are slotted in the longitudinal direction; the width of each slot is more than 3 mm so as to enhance air flowability; and the slots can ensure that surface temperature is obviously reduced particularly in areas with high local temperature; the distance between the central points of the fins are 12 mm; the thickness of each fin is more than 2 mm; the minimum thickness of the surface of the lamp body with the heat dissipation fins is 4 mm; and the depths of the heat dissipation fins are determined by the heat to be dissipated and can be determined by tests or simulation.

Description

A kind of LED street lamp of high efficiency and heat radiation

Technical field

The invention belongs to field of semiconductor illumination, in particular to a kind of semiconductor LED street lamp

Background technology

LED is a kind of energy-efficient light source, and has the advantage of long working life, investigates its use cost and energy efficiency indexes all significantly is better than various conventional light source according to cycle life-cycle.But because LED itself is a semiconductor devices, operating temperature there is certain requirement, can only be operated in certain temperature range.High temperature can influence its working life greatly, so rapid dissipation the away of heat that how LED is produced in luminescence process is to guarantee that it can reach the key factor in normal service life.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, a kind of LED street lamp be provided, the characteristics design by Natural Heat Convection a kind of heat-dissipating casing efficiently.

The technical solution used in the present invention is: a kind of high-efficiency heat radiating LED street lamp, along the protuberance of lamp body upper surface heat radiation is set and checks sheet, the upper surface profile that makes heat radiation check sheet is circle, ellipse or other shaped forms of protuberance, the upper surface of protuberance can make air fully deeply check sheet inside, and the stack effect that adds strong convection is taken away more heat.The direction that sheet is checked in heat radiation is vertical vertical with lamp body, and is the shortest with realization air mobile distance in checking sheet.Every the processing of slotting of the lamp body longitudinal direction vertical with respectively checking sheet of a segment distance, groove width is greater than 3 millimeters, so that air flow property is strengthened, especially in the higher zone of local temperature, fluting can make surface temperature obviously descend.The central point spacing of respectively checking sheet is 12 millimeters, checks sheet thickness greater than 2 millimeters.The lamp body surface minimum thickness that having dispels the heat checks sheet is 4 millimeters.The sheet degree of depth is arbitrarily checked in heat radiation, is determined by the heat that needs dissipate, and determines by test or simulation.

Description of drawings

Fig. 1 is a schematic diagram of the present invention

Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) is one embodiment of the present of invention

Mark 1 is checked sheet 2 and is checked sheet 3 and check sheet among the figure

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the present invention is further detailed.

The direction that sheet is checked in every row heat radiation is vertical vertical with lamp body, and is the shortest with realization air mobile distance in checking sheet.Along the protuberance of lamp body upper surface heat radiation is set and checks sheet, the upper surface profile that makes heat radiation check sheet is circle, ellipse or other shaped forms of protuberance, the upper surface of protuberance can make air fully deeply check sheet inside, and the stack effect that adds strong convection is taken away more heat.The lamp body longitudinal direction vertical with respectively checking sheet every a segment distance slotted, promptly check sheet 1 and check gap between the sheet 2, groove width is greater than 3 millimeters, so that air flow property is strengthened, especially in the higher zone of local temperature, fluting can make surface temperature obviously descend.The central point spacing of respectively checking sheet is promptly checked sheet 2 and the spacing checked between the sheet 3 is 12 millimeters, and the single sheet thickness d of checking is greater than 2 millimeters.The lamp body surface minimum thickness that having dispels the heat checks sheet is 4 millimeters.

Embodiment 1

Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) are heat radiation lamp body design example of the present invention.The upper surface that sheet is checked in its heat radiation is ellipse, and long axis of ellipse is 120 millimeters, and minor axis is 60 millimeters.6 air grooves have been opened altogether at the lamp body longitudinal direction vertical with respectively checking sheet.The central point spacing of respectively checking sheet is 12 millimeters, and checking sheet thickness is 2.5 millimeters, and checking the sheet average height is 20 millimeters, and lamp body upper surface thickness is 4 millimeters.The heat that can satisfy 2.2w through every centimetre of longitudinal length of actual this heat radiation lamp body of test dissipates.

Claims

1. the LED street lamp of a high efficiency and heat radiation, it is characterized in that, along the protuberance of lamp body upper surface heat radiation is set and checks sheet, the direction that sheet is checked in heat radiation is vertically angled with lamp body, and the upper surface profile of checking sheet of dispelling the heat is circle, ellipse or other shaped forms of protuberance.

2. street lamp according to claim 1 is characterized in that: every the processing of slotting of the segment distance lamp body longitudinal direction vertical with respectively checking sheet, groove width is greater than 3 millimeters.

3. sheet is checked in heat radiation according to claim 1, it is characterized in that, the direction that sheet is checked in heat radiation is vertical vertical with lamp body, and is the shortest with realization air mobile distance in checking sheet.

4. sheet is checked in heat radiation according to claim 1, it is characterized in that, the central point spacing of respectively checking sheet is 12 millimeters, checks sheet thickness greater than 2 millimeters.

5. street lamp according to claim 1 is characterized in that, the lamp body surface minimum thickness that having dispels the heat checks sheet is 4 millimeters.

6. sheet is checked in heat radiation according to claim 1, it is characterized in that, the sheet degree of depth is arbitrarily checked in heat radiation, is determined by the heat that needs dissipate, and determines by test or simulation.