Patent Application
20120314416
1. Field of the Invention
The present invention relates to lighting fixtures and more particularly, to a LED lamp assembly practical for use in a tower of a wind power system or a subway tunnel.
2. Description of the Related Art
For illumination or direction indication in a long passage, a lighting fixture must be installed. Conventional lighting fixtures commonly use a fluorescent lamp tube as the main light source. In a long passage, for example, in a tower of a wind power system or a subway tunnel, the air is frequently disturbed. A fluorescent lamp tube can easily be damaged by vibration when used in a place where the air is frequently disturbed.
Nowadays, LED technology for lighting has matured. However, a LED lamp simply has one light-emitting face for illumination. When multiple LED lamps are installed in a long passage, the light-emitting face is not adjustable. This limitation complicates the installation, wasting much labor and time.
The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a LED lamp assembly for use in a long passage, which facilitates installation and allowing selective positioning of the light-emitting face of the light source in one of four angular positions that spaced from one another at 90° angle.
To achieve this and other objects of the present invention, the LED lamp assembly comprises a housing, which comprises a rectangular end wall located on the top end thereof, a plurality of electric connectors and a power switch, a light source, which is a flat rectangular member comprising a light-emitting face, a circuit board mounted therein and carrying a control circuit and an array of light emitting diodes controllable by the control circuit adapted to emit light through the light-emitting face and a rectangular end plate located on the bottom end thereof and selectively fastened to the rectangular end wall of the housing in one of four angular positions that spaced from one another at 90° angle, and a mounting plate, which extends perpendicularly from one side of the rectangular end wall of the housing and has a plurality a plurality of mounting slots for mounting.
Further, the mounting slots of the mounting plate are elongated and smoothly arched mounting slots cut through two opposite sides of the mounting plate and equiangularly spaced from one another so that the LED lamp assembly can be installed in a support member in a long passage in a tilted condition.
In an alternate form of the present invention, the housing comprises two sliding grooves arranged in a parallel manner at one peripheral wall thereof and extending along the length; the mounting plate comprises four angled coupling potions respectively extended from the four corners thereof and respectively slidably coupled to the sliding grooves.
The LED lamp assembly of the present invention has the advantages of anti-vibration, long durability and lower power consumption, and therefore it is practical for use in a subway tunnel where the air is frequently disturbed.
Other and further benefits, advantages and features of the present invention will be fully understood by reference to the following specification in conjunction with the accompanying drawings, in which:
The various objects and advantages of the present invention will be more readily understood from the following detailed description of four embodiments when read in conjunction with the appended drawings, in which like reference numbers denote like elements of structure.
Referring to
The housing 11 is a hollow, elongated, rectangular case having a rectangular end wall 113 located on one end, namely, the top end thereof and holding a plurality of power-output electric connectors 111 and a power switch 112 at one of the four peripheral sides thereof and a power-input electric connector 111a at the other end, namely, the bottom end thereof The power-input electric connector 11a is a power jack for the connection of a power cable 90 for power supply input (see
The light source 12 is a flat rectangular member having a light-emitting face 121 and holding on the inside a circuit board with an array of LEDs and a control circuit (not shown). Light emitted by the LEDs goes through the light-emitting face 121 toward the outside. Further, a rectangular end plate 122 is located on one end, namely, the bottom end of the light source 12 and fastened to the rectangular end wall 113 of the housing 11. The rectangular end plate 122 of the light source 12 can be selectively fastened to the rectangular end wall 113 of the housing 11 in one of four angular positions that spaced from one another at 90° angle (see the imaginary lines in
According to the embodiment shown in
As stated above, the LED lamp assembly 100 of the present invention allows the user to adjust the angular position of the light-emitting face 121 of the light source 12 to one of four angular positions relative to the housing 11. Further, the installation of the LED lamp assembly 100 is quite simple. Anybody can install the LED lamp assembly 100 without special training.
Although particular embodiment of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.
