Patent Application
20140240983
1. Field of the Invention
The present invention generally relates to illumination devices, and more particularly to an LED street lamp.
2. Description of Related Art
Traditional street lightings are usually mercury lamps. Because the high heat resulting from long use always makes their service life limited, high power consuming, and environmental pollution, they tend to be replaced by a light emitting diode (LED) illumination device for advantages of high intensity, power saving and long service life, etc.
LEDs have a shortage of low light emitting efficiency and low power, a plurality of LEDs are grouped together and mounted on a circuit board as an LED light source for achieving demands of a wide range of irradiation and high-brightness. In this way, an outdoor illumination device can be accomplished with sufficient illumination. However, when few LEDs do not work, the entire LED illumination device has to be replaced or repaired for that a single LED cannot be replaced. Therefore, the maintenance of the LED illumination device is time-consuming, and the maintenance cost is high.
Accordingly, an object of the present invention is to provide an LED street lamp, in which LED modules are installed and could be disassembled individually. Therefore, if any LED module is out of work, it can be disassembled and displaced by maintenance personnel. In this way, a better and simpler maintenance will be achieved. Thus, the time and cost of maintenance will be reduced.
Another object of the present invention is to provide an LED street lamp, in which the quantity of LED modules can be adjusted as demands without the circuit reconfigured.
In order to achieve the objects mentioned above, the present invention provides an LED street lamp including a pair of frames, a plurality of LED modules, an electrical box, a side cover and a back cover. The frames are disposed in symmetry. Each frame has a cover plate, a supporting plate and a blocking plate. The supporting plate and the blocking plate located on opposite sides of the cover plate are bent and extended from sides of the cover plate. LED modules are arranged between the pair of the frames in parallel and at interval. Two sides of each LED module are fixed on the supporting plates of the frames. Each of the LED modules includes a circuit board, a plurality of LEDs disposed on the circuit board and a heat dissipating fins assembly. The LED module has a back face and a light emitting face. The electrical box disposed by a lateral side of the LED modules covers one side of the frames. The side cover covers another side of the frames, and the back cover covers on back faces of the LED modules and positioning between the pair of frames.
Comparing to the related art, the LED street lamp of the present invention has the following effects. Because the LED modules of the LED street lamp can be disassembled individually, when any one of the LED modules out of work, the single LED module can be disassembled and displaced by maintenance personnel. In this way, the time and the cost of maintenance will be reduced. Furthermore, the quantity of the LED modules can be adjusted as demands, and the length of the frames can be adjusted correspondingly to meet the illumination and scope requirements.
The features of the invention believed to be novel are set forth with particularity in the appended claims. The invention itself, however, may be best understood by reference to the following detailed description of the invention, which describes a number of exemplary embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
In cooperation with attached drawings, the technical contents and detailed description of the invention are described thereinafter according to a number of preferable embodiments, being not used to limit its executing scope. Any equivalent variation and modification made according to appended claims is all covered by the claims claimed by the present invention.
Please refer to
The pair of frames 10 are disposed in symmetry. Each of the frames 10 has a cover plate 11, a supporting plate 12 and a blocking plate 13. The supporting plate 12 and the blocking plate 13 located on opposite sides of the cover plate 11 are bent and extended from sides of the cover plate. In a preferred embodiment, the cover plate 11 is a curved sheet. The supporting plate is bent form one side of the curved sheet and extended in a horizontal direction. An opening 110 is formed between the supporting plate 12 and the blocking plate 13.
The LED modules 20 are arranged between the pair of the frames 10 in parallel and at interval. Two sides of each LED module 20 are fixed on the supporting plates 12 of the frames 10 correspondingly. The LED module 20 has a back face 201 without light emission and a light emitting face 202. In an embodiment of the present invention, each of the LED modules 20 includes a circuit board 21, a plurality of LEDs 22 disposed on the circuit board 21 and a heat dissipating fins assembly 23. The heat dissipating fins assembly 23 is disposed on the back face 201 of the LED module 20.
In an embodiment of the present invention, the LED street lamp 1 has two set of LED module. In actual practice, the quantity of the LED modules 20 can be adjusted by demands, and the length of the frames 10 will be adjusted with the LED modules 20.
The electrical box 30 covering one side of the frames 10 is disposed by a lateral side of the frames 10. The side cover 40 covers another side of the frames 10. Besides, the side cover 40 has a plurality of heat dissipating holes 401. Heat resulted from the LED module 20 will dissipate from those heat dissipating holes 401 to the outside.
In an embodiment of the present invention, the LED street lamp 1 further comprises a plurality of fasten components 60. The cover plate 11 has a first combination hole 111 at the location where the cover plate 11 joins with the supporting plate 12 and a second combination hole 112 at the location where the cover plate 11 joins with the blocking plate 13. The side cover 40 has a first fixing hole 41 and a second fixing hole 42 correspond to the first combination hole 111 and the second combination hole 112 respectively. The fasten components 60 pass through the first combination hole 111 and the first fixing hole 41, the second combination hole 112 and the second fixing hole 42 for combining the side cover 40 to a side of the frames 10.
Moreover, the back cover 50 positioned between the pair of frames 10 covers on the back faces 201 of the LED modules 20. In an embodiment, the back cover 50 includes a bottom plate 51 and a pair of side wings 52 extending from opposite sides of the bottom plate 51. One side of the bottom plate 51 is fixed on the bottom edge of the side cover 40, and another side is fixed on the electrical box 30.
In an embodiment of the present invention, the LED street lamp 1 further comprises a decoration plate 70. The decoration plate 70 covers the light emitting faces 202 of the LED modules 20. The decoration plate 70 has a plurality of apertures 71 disposed at interval with a quantity corresponding to an amount of the LED modules 20. A way of assembling the decoration plate 70 is to provide a plurality of screw bolts 113 on each supporting plate 12 then screw the decoration plate 70 on the screw bolts 113.
Please refer to the
When the LED street 1 of the present invention is in use, the heat resulted from those LED modules 20 will be conducted to the heat dissipating fins assembly 23 and then dissipated quickly to the accommodation 100 formed by the frames 10, side cover 40 and the back cover 50. Afterward, the heat will dissipate through the heat dissipating fins assembly 23 having large heat dissipating areas. At last, the heat will dissipate from the gap 520 formed between the side wing 52 and the blocking plate 13.
Because each side wing 52 is extended to an outer of the blocking plate 13, when it rains, the rain will drop along the side wing 52 and on the outer surface of the blocking plate 13. Then the rain will fall out the LED street lamp 1 along the blocking plate 13 and the cover plate 11.
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Although the present invention has been described with reference to the preferred embodiment thereof, it will be understood that the invention is not limited to the details thereof Various substitutions and improvements have been suggested in the foregoing description, and others will occur to those of ordinary skill in the art. Therefore, all such substitutions and improvements are intended to be embraced within the scope of the invention as defined in the appended claims.
