CN201892120U

CN201892120U - LED (light-emitting diode) streetlamp

Info

Publication number: CN201892120U
Application number: CN2010206296232U
Authority: CN
Inventors: 秦彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-21
Filing date: 2010-11-21
Publication date: 2011-07-06
Anticipated expiration: 2020-11-21

Abstract

The utility model provides an LED (light-emitting diode) streetlamp, which comprises an upper shell (14), a lower shell (11), a radiator (4), a plurality of lamp wicks (2) and a power supply (7). The radiator (4) is formed by assembling a plurality of sunflower-type radiating fins, each radiating fin is matched with one lamp wick to form a standardized module, and the radiating fins are fixed through screws and bolts and can be easily installed, removed and maintained. The upper part of the radiator is provided with a convection chamber (13) with chimney effect, and thus heat radiation can be reinforced. An independent power supply chamber (8) is separated by a baffle to ensure reliable heat radiation of the power supply (7).

Description

A kind of LED street lamp

Technical field

The utility model belongs to the LED lighting technical field.

Technical background

The LED illumination will be because energy-conserving and environment-protective will become lighting engineering of future generation, and street lamp is by in the first-selection.But since the design of existing LED street lamp unreasonable, make led chip operating temperature height, the power work temperature is also high, cause light decay, dead lamp, and heavy.Dispelled the heat and given birth to and dead problem into the development of LED street lamp.

It is the structure of radiated rib that existing LED lamp post structure generally adopts the back side of bulk, and problem has: one, radiator structure is unreasonable, the heat radiation cold air entire heat dissipation fin that is difficult for flowing through, the central area is the cross-ventilation dead band, then the integral heat sink effect is low, the heavy of fin, cost height; Two, monolithic construction, the waterproof construction complexity is unreliable, can not on-site maintenance; Three, power supply is placed on the fin, the environment temperature height, and power supply is exposed, and then necessary waterproof sealing causes the components and parts in the power supply, and particularly electrochemical capacitor lost efficacy, and whole power supply is damaged, moreover cost is not low; Four, Luo Lu fin, extremely important to dispelling the heat, but not attractive in appearance.

Summary of the invention

The utility model proposes a new structure at the existing above problem of LED street lamp, and radiator structure is simple, meets free convection aerodynamics; Be provided with shell, good looking appearance not only, also further enhance heat; Fin adopts assembly group structure, but standardization, and the heat radiation cost significantly reduces; The led light source modularization easily is designed to universal standard parts, can convenient dismounting safeguard; Independently power supply room is set, has solved the waterproof integrity problem of power supply.

The technical solution of the utility model: critical piece includes: upper casing, lower casing, power supply, radiator and wick, radiator is formed by number many sun fancy fin assembly group, wick includes heat-conducting plate, wick cover and led chip, led chip is arranged on the heat-conducting plate, has taked the waterproof sealing measure between wick cover and the heat-conducting plate.Characteristics of the present utility model are: radiator is fixed on the lower casing; The upper casing top has louver(-vre), and the height in the convection current chamber above radiator is greater than 50mm; The installation junction of the mounting rod of street lamp is positioned at the rear end of lower casing on lower casing; The power supply room that power supply is installed is positioned at the lower casing rear end above lower casing; The heat-conducting plate card of wick is contained in the front end face (below of radiator) of the heating column of sun fancy fin, and by screw, bolting, the led chip power lead passes heat-conducting plate and heating column is drawn from the rear end (top of radiator) of heating column.

Sun fancy fin, the center is a heating column, fin stretches out from the heat conduction cylinder, adopts extrusion molding, low cost of manufacture, because rib efficient height, the air penetrating rate height that flows, then resistance is little, and radiating effect is also just high, thereby is the best heat radiating fin structure of LED illuminating lamp.Street lamp power is big, then just adopts many sun fancy of number fin to piece together and forms high-power radiator, does not have the cross-ventilation dead-time problem.

Form wick by wick cover, heat-conducting plate and led chip, can be designed to the optical mode group of standard, by screw, bolting.The heat of led chip passes to earlier on the heat-conducting plate, and heat-conducting plate passes to heating column by the transmission of heat by contact with the heating column end face, is shed in air through convection heat transfer' heat-transfer by convection by fin again.The power lead of led chip passes heating column and draws, and is connected with binding post in the power supply room again.Each sun fancy fin is furnished with a wick, if certain wick has fault, as long as a screwdriver with regard to dismantled and assembled replacing, has solved LED street lamp on-site maintenance problem.

Utilize shell to constitute convection current chamber, improve the air mass flow of the fin of flowing through, strengthen and improved heat dissipation capacity with stack effect.Adopt the convection current chamber to improve heat dissipation capacity, the height in convection current chamber can not be low, should be greater than 50mm, otherwise effect is not remarkable.

Divide to be separated with independently power supply room, can guarantee that rainwater can not flow into, solved the power supply waterproof problem, and power supply can be designed to openly, element directly is exposed in the air in the power supply, is particularly conducive to the heat radiation of electrochemical capacitor, and power supply reliably is guaranteed.

Description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is a kind of feature profile view of the utility model LED street lamp.

The characteristic view that Fig. 2 opens for LED street lamp upper casing shown in Figure 1.

Fig. 3 is the LED wick feature profile view in a kind of the utility model.

Fig. 4 is a kind of feature schematic diagram of stagger arrangement formula passage.

Among the figure, 1, lower casing, 2, wick, 3, screw, 4, radiator, 5, heating column, 6, mounting rod, 7, power supply, 8, power supply room, 9, dividing plate, 10, blow vent, 11, water-blocking plate, 12, louver(-vre), 13, convection current chamber, 14, upper casing, 15, the chip power lead, 16, led chip, 17, heat-conducting plate, 18, the wick cover.

Specific embodiments

Fig. 1 shows a kind of utility model street lamp of the present invention, the view that Fig. 2 opens for upper casing.Shown in the figure: shell is divided into upper casing 14 and lower casing 1, and upper casing and lower casing can adopt injection molding, metallic plate punching stretch forming.The injection molding cost is low, and good looking appearance, used plastics should be fire-retardant, uvioresistant plastics.Radiator 4 is formed by 10 sun fancy fin assembly groups among the figure, is installed on the lower casing 1, is furnished with a wick 2 on each fin, is fixed on the front end face (below of fin) of the heating column 5 of fin by a screw 3.Upper casing 14 tops have louver(-vre) 12 (constituting for the many circular holes of number among the figure), and big inner chamber is stayed in the top of radiator---convection current chamber 13, utilize the suction principle of chimney, and improve air mass flow, the enhance heat amount.The mounting rod 6 of street lamp is fixed at the rear end and the lower casing of lower casing 1, is by two bolting among the figure.The power supply room 8 that power supply 7 is set separates by dividing plate 9 between power supply room 8 and the convection current chamber 13 above lower casing 1 rear end, and dividing plate 9 is fixed on the lower casing 1.Shown in the figure, chip power lead 15 passes heating column 5 and draws from the rear end of heating column.

Street lamp shown in Figure 1, upper casing and power supply loam cake are integral structure, also can be designed to two parts, and be fixing respectively.Integral structure is simple, can convection current chamber 13 and power supply room 8 be separated by the dividing plate 9 that is fixed on lower casing.For power supply heat sinking, the air in the power supply room should with the shell cross-ventilation, thereby below power supply room 8, have passage (air admission hole) on the following shell wall, the venthole of power supply room (blow vent) then should be arranged on dividing plate upper end, and this meets the principle that goes out on advancing under the free convection.Shown in Fig. 1, the blow vent 10 of dividing plate upper end is to be made of the space between upper casing 13 inwalls and dividing plate 9 upper ends, and at the upper casing inwall, that side in convection current chamber is provided with water fender 11, and block water flows to power supply room along the upper casing inwall.

In order to stop at driving rain weather, the passage on the following shell wall has the globule to blow into power supply room 8, in the power supply room air globule is arranged, and passage should adopt stagger arrangement formula structure, as shown in Figure 4.

Fig. 1 and Fig. 2 illustrate, and the front end shell (going up lower casing) has adopted hinge-type bindiny mechanism between upper casing 14 and the lower casing 1, as long as unclamp the screw of rear end, just upper casing can be opened, and carries out the parts installation and maintenance.

Dividing plate 9 can be utilized the fin as power supply, adopts the aluminum plate material to make, and power supply is fixed on the dividing plate, and fin on the power supply (or metal shell) and dividing plate are close to fixing, increase the heat radiation of power pipe.Can also be on dividing plate, that side in convection current chamber is provided with the rib-type fin, strengthens the heat dissipation capacity of that side of convection current chamber, naturally reduce heat dissipation capacity in the power supply room, promptly reduced the temperature in the power supply room, help reducing other elements in the power supply, particularly the temperature of electrochemical capacitor guarantees that power supply is long-lived reliable.

Fig. 3 shows the wick critical piece: heat-conducting plate 17, led chip 16, wick cover 18 and chip power lead 15, chip power lead 15 passes heat-conducting plate 17 and draws.The waterproof sealing of light source is to be guaranteed by the water-stop between heat-conducting plate 17 and the wick cover 18, can adopt the fluid sealant adhering method, and is reliable simply again.

In the LED street lamp illustrated in figures 1 and 2, the heating column end face of 10 sun fancy fin is parallel, promptly the direction of illumination of 10 wicks is parallel, but in order to make irradiated road surface scope big and even, the direction of illumination of each wick should be not parallel, can realize by the setting angle of adjusting each sun fancy fin.

Draw for the ease of the chip power lead and to lead in the power supply room, be connected with the binding post in the power supply room, help waterproof again, the chip power lead should add joins Wire protective conduit, and an end of this Wire protective conduit is fixed on the rear end of heating column, should take the water-stop measure, the other end is fixed on the dividing plate, can open several apertures at dividing plate, and every Wire protective conduit inserts each aperture, extend in the power supply room, Wire protective conduit is preferably selected plastic conduit for use.

Claims

1. LED street lamp, include: shell, power supply (7), radiator (4) and wick (2), shell includes upper casing (14) and lower casing (1), radiator (4) is formed by number many sun fancy fin assembly group, wick (2) includes heat-conducting plate (17), wick cover (18) and led chip (16), it is characterized in that: upper casing (14) top has louver(-vre) (12), radiator (4) is fixed on the lower casing (1), at the convection current chamber (13) of the top of radiator (4) height greater than 50mm, the installation junction of mounting rod (6) is positioned at the rear end of lower casing on lower casing (1); The power supply room (8) that power supply (7) is installed is separated by dividing plate (9) between power supply room (8) and convection current chamber (13) in the rear end of street lamp, and dividing plate (9) is fixed on the lower casing (1); Heat-conducting plate (16) is mounted on heating column (5) end face in the sun fancy fin, and by screw, bolting, chip power lead (15) passes heat-conducting plate (17) and heating column (5) is drawn from the rear end of heating column.

2. LED street lamp according to claim 1 is characterized in that: the loam cake of power supply room (8) and upper casing (14) are structure as a whole.

3. LED street lamp according to claim 1 is characterized in that: upper casing (14) and lower casing (1) adopt the plastic construction of injection mo(u)lding.

4. LED street lamp according to claim 1 is characterized in that: in power supply room (8) below, have passage on the following shell wall, be provided with the blow vent (10) that leads to convection current chamber (13) in dividing plate (9) upper end.

5. according to claim 2 or 4 described LED street lamps, it is characterized in that: the blow vent (10) of dividing plate (9) upper end is to be made of the space between upper casing inwall and the dividing plate upper end; At the upper casing inwall, that side in convection current chamber is provided with water fender (11).

6. LED street lamp according to claim 4 is characterized in that: the below of power supply room (8), the passage on the following shell wall has adopted stagger arrangement formula structure.

7. LED street lamp according to claim 1 is characterized in that: the chip power lead is furnished with Wire protective conduit, and an end of Wire protective conduit is fixed on the heating column rear end, and the other end is fixed on the dividing plate.

8. LED street lamp according to claim 1, it is characterized in that: dividing plate has adopted aluminium material, and power supply is fixed on the dividing plate.

9. LED street lamp according to claim 8 is characterized in that: on dividing plate, that side in convection current chamber is provided with the rib-type fin.

10. LED street lamp according to claim 1 is characterized in that: adopted hinge-type bindiny mechanism between upper casing and the lower casing, and be arranged on the front end of shell.