Patent Application
20070268698
A preferred embodiment of the invention will be illustrated further in the following description and accompanying drawings, and wherein:
A light emitting diode (LED) illuminating device with rotating capability for showcases or the like is disclosed in the present invention. The embodiments of the invention will now be described in detailed below with reference to the accompanying drawings, and the preferred embodiment is for illustration only and not for the purpose of limiting the invention.
Referring to
Similarly, the size of the enclosure 10 of the LED illuminating device according to the present invention includes various dimensions to suit specific individual needs. It shall be appreciated that the specific embodiment above of the invention has been described herein for purposes of illustration rather than limiting the invention.
The substrate 30 is placed inside the enclosure 10 and the material for the substrate 30 is preferably aluminum or copper. At least one illuminating elements 35 can be disposed on the surface of the substrate 30 to provide various degrees of brightness. One candidate of the illuminating elements 35 is LED. Preferably, a plurality of LED is arranged with a linear configuration. The material for the enclosure 10, the side covers 20, 21 and the substrate 30 include aluminum or copper due to the material has better thermal dissipation. In one embodiment, Al is preferably employed since substances made of Cu are relatively heavy. The transparent front cover 40 engages with the front side of the housing and the transparent front cover 40 with the side covers 20, 21 offer protection for the illuminating elements 35 inside the enclosure 10. The see-through nature of the transparent front cover 40 allows light emitting from the illuminating elements 35 to pass through. The transparent front cover 40 can be a lens for optical purpose (such as focusing) or simply transparent acryl. In other embodiments, the transparent front cover 40 can be a reflector to reflect the illumination illuminated by the LED. The material for the transparent front cover 40 can be selected from glass, quartz, plastic, acrylic or the like. Alternatively, the front cover can be made as frosted or semi-transparent material.
The rotator 50 is attached to the substantial center of the back side of the enclosure 10 which enables the whole linear housing structure to rotate around to any angle based on specific individual needs. The particular emphasis of the present invention is upon the rotator 50 since this very component offers benefits which conventional illuminating devices were unable to accomplish. The material used for the rotator 50 includes ABS (acrylonitrile-butadiene-styrene), Al or Al—Mg alloy. A screw 90 is provided to fix the LED illuminating device in the final assembly form. The rotator 50 along with the whole linear housing structure is now in complete assembly and can be mounted in a socket 60 for lighting, as shown in
The numeric 101 is AC/DC power input, the numeric 102 indicates 12V AC/DC+/−20%, the numeric 103 is LED power output and the numeric 104 represents the parameters of the power (for provided LED 3.2˜10.6 V DC and 20˜700 mA power). The block 110 is AC to DC bridge which is connected to the block 120 power current control. The AC to DC bridge converts AC to DC for LED current supply. The block 130 is a control driver, and the block 140 is a power current detector which detection range falls within 20 mA to 700 mA. The AC to DC bridge 110, the control driver 130, and the power current detector 140 are all grounded.
In conclusion, the proposed LED illuminating device with rotating capability for showcases or the like in the present invention has the following advantages over conventional illuminating devices. One advantage is that the proposed LED illuminating device is exceptionally versatile such that it is able to rotate around to any angle based on specific individual needs when mounted in a socket, which is a unique design characteristic that far exceeds the possibilities of traditional illumination sources and conventional LEDs. Another advantage of the proposed LED illuminating device is that it may vary in a wide range of shapes and sizes to meet almost any requirements. For example, the cross-section of the enclosure can be configured in the shape of, including but not limited to rectangle, square, circle, semicircle, curve, triangle, trapezoid or any kind of suitable shapes.
Still another advantage of the proposed LED illuminating device is that it is considerably energy efficient. The presented LED illuminating device has low power consumption which requires only 1 W ˜12 W, whereas conventional illumination devices typically requires higher power such as 100 W for lighting. Yet another advantage of the proposed LED illuminating device is that compared with conventional illumination devices, it possesses better heat dissipation capability due to the fin-like architecture on the top and bottom surfaces of the enclosure.
From the foregoing, it shall be appreciated that specific embodiments of the invention have been described herein for purposes of illustration, but that various modifications and alterations may be made by those skilled in the art without deviating from the spirit and scope of the invention. For example, it shall be understood that there is no intention to limit the shape and size of the enclosure 10 disclosed above, but on the contrary, the invention is to cover all modifications, alternate constructions and equivalents falling within the spirit and scope of the invention. Accordingly, the invention is not limited except as by the appended claims.
