Environmentally friendly street lamps

• US 20090034255A1
• Filed: 07/30/2008
• Published: 02/05/2009
• Est. Priority Date: 07/31/2007
• Status: Active Grant

• Current Assignee: Dongguan Kingsun Optoelectronic Company Limited (Dongguan Kingsun Group Co. Ltd.)
• Original Assignee: Dongguan Kingsun Optoelectronic Company Limited (Dongguan Kingsun Group Co. Ltd.)
• Inventors: Li, Xuliang
• Granted Patent: US 7,832,898 B2
• Time in Patent Office: Days
• US Class Current: 362/249.10
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 15/015 Devices for covering joints between adjacent lighting devices; End coverings
• CPC Class Codes: F21V 21/116 Fixing lighting devices to arms or standards F21V21/002 takes precedence
• CPC Class Codes: F21V 29/71 using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
• CPC Class Codes: F21V 29/713 in direct thermal and mechanical contact of each other to form a single system
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/80 with pins or wires
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y02B 20/72 in street lighting

Abstract

The present invention relates to a LED street lamp, and more particularly to environmentally friendly LED street lamp. The LED street lamp comprises a main body and a plurality of LED bulbs, wherein the main body comprises a base plate; said base plate comprises two splay flat plate, namely the 1^st flat plate and the 2^nd plate; the inner side of the 1^st flat plate and the 2^nd flat plate comprise sunk cavities where the LED bulbs are provided; and the light beams from the LED bulbs at the 1^st flat plate and the 2^nd plate cross in front of the main body.

Claims

1. An environmental friendly LED street lamp comprising:

a main body and a plurality of LED bulbs, wherein the main body comprises a base plate;

said base plate comprises splay flat plates, namely the 1^st flat plate and the 2^nd plate;

the inner sides of the 1^st flat plate and the 2^nd flat plate comprise sunk cavities where the LED bulbs are provided; and

the light beams from the LED bulbs at the 1^st flat plate and the 2^nd plate cross in front of the main body.

2. The environmental friendly LED street lamp according to claim 1, wherein the main body comprises a head portion, a middle portion and a tail portion;

said head portion and one side of said middle portion are connected butt and butt, and the opposite side of said middle portion and said tail portion are connected the same;

a first gasket is provided between the head portion and the middle portion, and the head portion and the middle portion are secured by fasteners;

a second gasket is provided between the tail portion and the middle portion, and the tail portion and the middle portion are secured by fasteners;

the middle portion is profile with same section along its length direction;

said profile comprises a base plate which consists of two flat plates and connecting plate between them;

the two flat plates shapes to be splay together and are connected by the connecting plate;

said base plate extends along the length direction of the profile with its inner face as the obverse face and the outer face as the inverse;

two parallel side plates extending along the length direction of the profile are provided at the two edges of the obverse face symmetrically, while the inverse is provided with a plurality of radiating pins extending along the length direction of the profile;

a tube of the head portion is constructed by a top part and a bottom part, which are secured by fasteners;

a wire hole in the head portion connects the tube and the joint face of head portion and the middle portion;

the LED street lamp further comprises two radiating plates on the obverse face of the splay flat plates separately;

said radiating plates comprises PCB for conductivity; and

a plurality of LED bulbs are provided at the radiating plates to form LED array plates;

the LED street lamp further comprises two insulating gaskets adhering to the radiating plates; and

a plurality of holes are provided at the insulating gaskets for the LED bulbs;

the insulating gaskets and the radiating plates are fastened to the obverse face of the base plate of the middle portion by fasteners;

the two inner sides of the splay flat plate are both provided with a set of radiating plate and insulating gasket; and

the LED street lamp further comprises a reflection shade adhering to the insulating gaskets;

the reflection shade comprises a plurality of reflection notches with corresponding holes at the bottom of the reflection notches for LED bulbs;

said LED bulbs are set in the reflection notches through the holes at the bottom of the reflection notches;

the reflection shade is secured to the obverse face of the middle portion by fasteners;

the reflection notches are provided in couple to shape like splay, and this construction corresponds to the splay base plate; and

the LED street lamp further comprises a lampshade comprising bottom plate and transparent lampshade, wherein the bottom plate is a rectangular plate with a rectangular hatch;

a rectangular gasket and a rectangular frame are provided in order to fix the lampshade plate to the bottom plate by fasteners;

the head portion, the middle portion, the tail portion and the bottom plate are all made of thermal conductive material; and

the wire hole is provided with a waterproof tie-in.

3. The environmental friendly LED street lamp according to claim 2, wherein the obverse side of the middle portion further comprises a couple of hook portion with their tips setting face to face, and each hook portion is set near the side plates separately;

the section of the hook portion shapes like letter “

L”

to comprise a horizontal part and a vertical part, wherein the horizontal part is longer than the vertical part;

the head portion comprises a joint face comprising a step, wherein the convex part of the step butt into the inner side of the splay side plates of the middle portion, and the gasket is provided at the outer side of the step;

similarly, the tail portion comprises a joint face comprising a step, wherein the convex part of the step butt into the inner side of the splay side plates of the middle portion, and the gasket is provided at the outer side of the step;

a plurality of radiating pins are set both on the top part of the head portion and the tail portion;

the top part of the head portion and the tail portion are also provided with risers which have holes in them;

the head portion and the tail portion are tightened by bolts which are set in the holes of the risers;

the middle portion is connected to the head portion and tail portion with gaskets between them;

said bolts are arranged in the clearance of the radiating pins on the top of the middle portion;

the head portion and the middle portion are tightened by two screws which are set at the two side faces of the side plates;

similarly, the tail portion and the middle portion are tightened by two screws which are set at the two side face of the side plates;

an antiskid is provided on the inner wall of the tube of the head portion 101 axially;

the notch in the middle portion is consist of 1^st face, 2^nd face and 3^rd face, wherein the 1^st face is parallel to 3^rd face, and the 2^nd face is vertical to the 1^st face;

the 1^st face is near the inner side of the side plate, while the 3^rd face is near the outer side of the side plate;

the substantial part between the notch and the inner side of the side plate is 1^st flange, while the part between the notch and the outer side of the side plate is 2^nd flange;

the bottom face of the 1^st flange is 4^th face, and the bottom face of the 2^nd flange is 5^th face;

both of them are parallel to the 2^nd face, and the distance between the 4^th face and the 2^nd face is shorter than the distance between the 5^th face and the 2^nd face;

the radiating pins of the head portion, the middle portion and the tail portion are in the same direction with same section;

the part of the radiating pins of the head portion away from the middle portion is vaulted;

similarly, the part of the radiating pins of the tail portion away from the middle portion is vaulted too.

4. The environmental friendly LED street lamp according to claim 2, wherein LED array plate is composed of a plurality of LED subarray plates;

each LED subarray plate is provided with a set of LED bulbs, and each LED subarray plate is connected to the obverse face of the base plate of the middle portion by fasteners.

5. The environmental friendly LED street lamp according to claim 4, wherein The LED street lamp further comprises a constant current power, which is set in the cavity formed by the main body and lampshade;

said constant current power is set near the head portion including several sets of constant current devices which can work separately; and

each set of constant current device connects its output to the corresponding LED subarray by wire, and all sets of constant current device have one input connecting to the power supply.

6. The environmental friendly LED street lamp according to claim 2, wherein:

the head portion and the tail portion are tightened by screws, which are set in the clearance of the radiating pings.

7. The environmental friendly LED street lamp according to claim 2, wherein:

the head portion and the tail portion are die-casting molded with aluminum alloy, the middle portion is aluminum profile or aluminum alloy profile;

the gaskets at the both sides of the middle portion, and the gasket between the lampshade and the main body are all made of heat conductive silicon gel.

8. The environmental friendly LED street lamp according to claim 2, wherein:

the surfaces of the radiating pins are provided with a plurality of raised radiating arris.

9. An environmental friendly LED street lamp comprising:

a main body and a plurality of LED bulbs, wherein the main body comprises a base plate;

said base plate is assembled by a plurality of flat plates to shape like regular polygonal pyramid by cutting out pyramid apex; and

each face of the regular polygonal pyramid is a flat plate, and a plurality of LED bulbs are provided on the inner side of the flat plate;

the light beams from the bulbs cross in front of the main body.

10. An environmental friendly LED street lamp comprising:

a main body and a plurality of LED bulbs, wherein the main body comprises a base plate shaping like beach umbrella; and

a plurality of LED bulbs are provided on the inner side of the base plate;

the light beams from the bulbs cross in front of the main body.