CN202580963U

CN202580963U - LED (light emitting diode) street lamp

Info

Publication number: CN202580963U
Application number: CN2012201985539U
Authority: CN
Inventors: 程磊; 章雯; 陆蔺; 蔡成炜
Original assignee: Suzhou Vocational Institute of Industrial Technology
Current assignee: Suzhou Vocational Institute of Industrial Technology
Priority date: 2012-05-07
Filing date: 2012-05-07
Publication date: 2012-12-05
Anticipated expiration: 2022-05-07

Abstract

The utility model relates to an LED (light emitting diode) street lamp. The LED street lamp comprises a substrate, a radiating sheet, a PCB (printed circuit board) and an LED chip, wherein the radiating sheet is arranged at the upper end of the substrate, the PCB is fixed at the lower end of the substrate, the LED chip is arranged on the PCB, a sealing cover is fixed at the upper end of the substrate, a water-proof layer is arranged at the inner wall of the sealing cover, a reflecting layer is coated on the external wall of one side of the sealing cover, opposite to the substrate, and a transparent cover which is used for containing the PCB and the LED chip is arranged at the lower end of the substrate. By the LED street lamp, the heat generated when the LED is used can be rapidly radiated, so that the service life of the LED chip is prolonged; and through the reflecting layer, the reflection strength of LED light is increased, the luminous efficiency of the LED chip is increased, the radiation requirements can be met, and the production cost is reduced.

Description

The LED street lamp

Technical field

The utility model relates to a kind of lighting device, relates in particular to a kind of LED street lamp.

Background technology

The LED street lamp is the important component part of city illumination; It and people's life is closely related; Along with the quickening of Urbanization in China, the visual field that the LED street lamp is luminous with orientation, advantages such as power consumption is low, environmental protection enter into people is applied to lighting field more and more widely.But, be used for illuminating street lamp on highway or the street at present, though good illumination effect; But caloric value is very big; If can not in time operating temperature be discharged, will cause the LED wafer in high temperature, to lose efficacy, reduce the service life of LED lamp; After breaking down, must change immediately, otherwise can not continue to provide illumination.

Summary of the invention

The utility model has overcome the deficiency of prior art, and a kind of simple in structure, LED streetlamp with favorable radiating effect is provided.

For achieving the above object; The technical scheme that the utility model adopts is: a kind of LED street lamp; Comprise substrate, be installed in substrate upper end fin, be fixed on the pcb board of substrate lower end and be located at the LED wafer on the pcb board, said substrate upper end is fixed with seal closure, said seal closure inwall is provided with watertight composition; Be coated with reflector layer on the outer wall of the relative side with said substrate of said seal closure, said substrate lower end is provided with the translucent cover that holds pcb board and LED wafer.

In preferred embodiment of the utility model, the LED street lamp comprises that further the top of said seal closure is spherical in shape.

In preferred embodiment of the utility model, the LED street lamp comprises that further said watertight composition is a polyurethane waterproof coating.

In preferred embodiment of the utility model, the LED street lamp comprises that further said substrate is metal substrate or ceramic substrate.

In preferred embodiment of the utility model, the LED street lamp comprises that further the radiating fin that said fin is arranged by indention forms, and has certain intervals between the adjacent said radiating fin.

The utility model has solved the defective that exists in the background technology; The heat that the utility model produces LED in use sheds rapidly; Prolonged the service life of LED wafer; Increased the reflected intensity of LED light simultaneously through reflector layer, improved the luminous efficiency of LED wafer, not only satisfied the heat radiation requirement but also reduced production cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the structural representation of the preferred embodiment of the utility model;

Among the figure: 1, substrate, 2, fin, 3, pcb board, 4, the LED wafer, 5, seal closure, 6, watertight composition, 7, reflector layer, 8, translucent cover, 9, radiating fin.

The specific embodiment

Combine accompanying drawing and embodiment that the utility model is done further detailed explanation now, these accompanying drawings are the sketch map of simplification, the basic structure of the utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

As shown in Figure 1; A kind of LED street lamp, comprise substrate 1, be installed in substrate 1 upper end fin 2, be fixed on the pcb board 3 of substrate 1 lower end and be located at the LED wafer 4 on the pcb board 3, said substrate 1 upper end is fixed with seal closure 5; Said seal closure 5 inwalls are provided with watertight composition 6; Be coated with reflector layer 7 on the outer wall of a said seal closure 6 and said substrate 1 a relative side, further increase luminous intensity, improve the luminous efficiency of LED wafer 4; Said substrate 1 lower end is provided with the translucent cover 8 that holds pcb board 3 and LED wafer 4, avoids the influence of external environment.

For fear of the damage of rainwater to pcb board 3 and LED wafer 4, the top of said seal closure 5 is spherical in shape, and rainwater can guarantee the operate as normal of the components and parts on pcb board 3 and the LED wafer 4 along the outside landing of the spherical of seal closure 5, increases the service life.

The preferred said watertight composition 6 of the utility model is a polyurethane waterproof coating, good waterproof performance.

The preferred said substrate 1 of the utility model is metal substrate or ceramic substrate, and heat-transfer rate is fast.

In addition, in order to increase area of dissipation, improve heat dispersion, the radiating fin 9 that said fin 2 is arranged by indention is formed, and has certain intervals between the adjacent said radiating fin 9.

The utility model adds water in use in seal closure 6, make and leave certain cavity in the seal closure 6; The heat that LED wafer 4 sends sheds through substrate 1, fin 2, and the water in the seal closure 6 receives thermal evaporation, and heat is taken away; Catch a cold when simultaneously steam runs into the roof of seal closure 6, be condensed into water droplet and drop down onto in the seal closure 6, so move in circles; Practiced thrift a large amount of resources, and radiating effect is remarkable, has prolonged the service life of LED street lamp.

Above desirable embodiment according to the utility model is enlightenment, and through above-mentioned description, the related personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must confirm technical scope according to the claim scope.

Claims

1. LED street lamp; Comprise substrate, be installed in substrate upper end fin, be fixed on the pcb board of substrate lower end and be located at the LED wafer on the pcb board; It is characterized in that: said substrate upper end is fixed with seal closure; Said seal closure inwall is provided with watertight composition, is coated with reflector layer on the outer wall of the relative side with said substrate of said seal closure, and said substrate lower end is provided with the translucent cover that holds pcb board and LED wafer.

2. LED street lamp according to claim 1 is characterized in that: the top of said seal closure is spherical in shape.

3. LED street lamp according to claim 1 is characterized in that: said watertight composition is a polyurethane waterproof coating.

4. LED street lamp according to claim 1 is characterized in that: said substrate is metal substrate or ceramic substrate.

5. LED street lamp according to claim 1 is characterized in that: the radiating fin that said fin is arranged by indention is formed, and has certain intervals between the adjacent said radiating fin.