BACKGROUND OF THE INVENTION
1. Field of the Invention:
[0001] The present invention relates LED lighting technology and more particularly, to a
LED lamp assembly designed for use in a subway tunnel or a wind tower of a wind turbine
generating system, which is conveniently detachable, facilitating maintenance and
repair works.
2. Description of the Related Art:
[0002] US Application No. 13/156,988, discloses a LED lamp design entitled "LED LAMP ASSEMBLY FOR USE IN A LONG PASSAGE",
which comprises a holder frame carrying a plurality of male/female connectors and
a switch and having a rectangular top face, an elongated, rectangular lighting unit
having a light-transmissive face and a circuit board therein, the circuit board carrying
multiple LEDs and a control circuit that controls the LEDs to emit light through the
light-transmissive face, a rectangular plate mounted at the bottom side of the lighting
unit and selectively affixed to the holder in one of four equiangularly spaced positions,
and a mounting plate extended out of the holder frame. The mounting plate has mounting
holes for fastening to support means in a long passage in a parallel manner or at
any desired inclined angle relative to the long passage by fastening members.
[0003] FIG. 1 illustrates another prior art design of LED lamp assembly. As illustrated,
this design of LED lamp assembly comprises an electrical box
91, a back cover plate
92, a mounting plate
93, a light source unit
94, and a control circuit board
95.
[0004] According to the aforesaid prior art design, the electrical box
91 is a hollow rectangular frame tube adapted for accommodating the control circuit
board
95. The electrical box
91 is a one-pieced member, not detachable. This design of LED lamp assembly requires
much installation time and labor, not convenient for maintenance or repair.
SUMMARY OF THE INVENTION
[0005] The present invention has been accomplished under the circumstances in view. It is
main object of the present invention to provide a LED lamp assembly, which is practical
for use in a subway tunnel or a wind tower of a wind turbine generating system. It
is another object of the present invention to provide a LED lamp assembly, which is
conveniently detachable, facilitating maintenance and repair works.
[0006] To achieve this and other objects of the present invention, a LED lamp assembly comprises
an electrical box, a back cover plate, a bracket, and a light source unit. The electrical
box comprises two symmetrical U-shaped frame panels fastened together to exhibit a
rectangular configuration, and a control circuit board mounted in between the two
U-shaped frame panels. Each U-shaped frame panel comprises a horizontal wall, a first
upright wall and a second upright wall. The first upright wall and the second upright
wall are respectively perpendicularly extended from two opposite lateral sides of
the horizontal wall in a parallel manner. The first upright wall comprises a coupling
groove located on the bottom edge thereof. The second upright wall comprises a coupling
flange located on the bottom edge thereof. The coupling flange and coupling groove
of one U-shaped frame panel are respectively fastened to the coupling groove and coupling
flange of the other U-shaped frame panel. The horizontal wall of each U-shaped frame
panel comprises two mounting grooves located on the inside wall thereof in a parallel
manner. The control circuit board is affixed to the mounting grooves of one U-shaped
frame panel by screw nails. Further, the control circuit board comprises an electrical
wire electrically connected to the light source unit. The back cover plate covers
one end of the electrical box, having installed therein a power input connector electrically
connected to the control circuit board of the electrical box for input of an external
power supply. The bracket comprises a front cover panel covering the opposite end
of the electrical box, a round hole located on the front cover panel for the passing
of the electrical wire of the control circuit board, an extension panel extended from
the front cover panel at right angles, and a plurality of mounting through holes located
on the extension panel for fastening to an external mount. The light source unit is
an elongated rectangular device affixed to the front cover panel of the bracket by
screws, comprising a light-transmissive surface located on one side thereof and a
LED circuit board mounted therein and carrying a plurality of light-emitting devices.
The LED circuit board is electrically connected with the electrical wire of the control
circuit board for enabling the control circuit board to control the light-emitting
devices to emit light through the light-transmissive surface.
[0007] In a second embodiment of the present invention, the LED lamp assembly comprises
an electrical box, a back cover plate, a front cover plate, a light source unit, and
a bracket. The electrical box comprises two symmetrical U-shaped frame panels fastened
together to exhibit a rectangular configuration, and a control circuit board mounted
in between the two U-shaped frame panels. Each U-shaped frame panel comprises a horizontal
wall, a first upright wall and a second upright wall. The first upright wall and the
second upright wall are respectively perpendicularly extended from two opposite lateral
sides of the horizontal wall in a parallel manner. The first upright wall comprises
a coupling groove located on the bottom edge thereof. The second upright wall comprises
a coupling flange located on the bottom edge thereof. The coupling flange and coupling
groove of one U-shaped frame panel are respectively fastened to the coupling groove
and coupling flange of the other U-shaped frame panel. The horizontal wall of each
U-shaped frame panel comprises two mounting grooves located on the inside wall thereof
in a parallel manner. The control circuit board is affixed to the mounting grooves
of one U-shaped frame panel by screw nails. Further, the control circuit board comprises
an electrical wire electrically connected to the LED circuit board. The back cover
plate covers one end of the electrical box, having installed therein a power input
connector electrically connected to the control circuit board of the electrical box
for input of an external power supply. The back cover plate comprises an extension
panel extended from the bottom side thereof at right angles, and a plurality of mounting
through holes located on the extension panel for fastening to an external mount. The
front cover plate covers the opposite end of the electrical box. The light source
unit is affixed to the front cover plate, comprising a light-transmissive surface
located on one side thereof and a LED circuit board mounted therein and carrying a
plurality of light-emitting devices. The LED circuit board is electrically connected
with the electrical wire of the control circuit board for enabling the control circuit
board to control the light-emitting devices to emit light through the light-transmissive
surface. The bracket is affixed to one end of the light source unit opposite to the
front cover plate and the electrical box, comprising an extension panel extended from
the bottom side thereof at right angles and a plurality of mounting through holes
located on the extension panel for fastening to the external mount to which the back
cover plate is affixed.
[0008] The aforesaid second embodiment, the mounting through holes are respectively located
on the back cover plate and the bracket at two distal ends of the LED lamp assembly
to fit a different installation requirement.
[0009] Other 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 like reference signs denote like components of structure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010]
FIG. 1 is a schematic exploded view of a part of a LED lamp assembly according to
the prior art.
FIG. 2 is an exploded view of a LED lamp assembly in accordance with a first embodiment
of the present invention.
FIG. 2A is an enlarged view of Part A of FIG. 2.
FIG. 2B is an enlarged view of Part B of FIG. 2.
FIG. 3 is an elevational assembly view of the LED lamp assembly in accordance with
a first embodiment of the present invention.
FIG. 4 is an exploded view of the first embodiment of the present invention, illustrating
the structure of the electrical box and the control circuit board.
FIG. 5 is a cross-sectional view of the LED lamp assembly in accordance with the first
embodiment of the present invention.
FIG. 6 is an elevational assembly view of a LED lamp assembly in accordance with a
second embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0011] Referring to FIGS. 2-5, a LED lamp assembly
100 in accordance with a first embodiment of the present invention generally is shown.
The LED lamp assembly
100 comprises an electrical box
11, a back cover plate
12, a bracket
13, and a light source unit
14.
[0012] The electrical box
11 comprises two symmetrical U-shaped frame panels
111 that are fastened together to exhibit a rectangular configuration, and a control
circuit board
119 mounted in between the two U-shaped frame panels
111. Each U-shaped frame panel
111 comprises a horizontal wall
112, a first upright wall
113, and a second upright wall
114. The first upright wall
113 and second upright wall
114 are respectively perpendicularly extended from two opposite lateral sides of the
horizontal wall
112 in a parallel manner. The first upright wall
113 has a coupling groove
115 located on the bottom edge thereof, as shown in FIG. 2A. The second upright wall
114 has a coupling flange
116 located on the bottom edge thereof, as shown in FIG. 2B. By means of fastening the
coupling groove
115 and coupling flange
116 of one U-shaped frame panel
111 to the coupling flange
116 and coupling groove
115 of the other U-shaped frame panel
111, the two U-shaped frame panels
111 are fastened together, as shown in FIG. 5. The horizontal wall
112 of each U-shaped frame panel
111 has two mounting grooves
117 located on the inside wall thereof in a parallel manner. The control circuit board
119 is affixed to the mounting grooves
117 of one U-shaped frame panel
111 by screw nails
118, as shown in FIGS. 4 and 5. Each U-shaped frame panel
111 further comprises two elongated screw seats
110 respectively located on the inside wall thereof at the junction between the horizontal
wall
112 and each of the first upright wall
113 and second upright wall
114.
[0013] The back cover plate
12 covers one end of the electrical box
11, having installed therein a power input connector
121 to which a power cable
122 is electrically connected to provide power supply to the control circuit board
119.
[0014] The bracket
13 comprises a front cover panel
131 that covers the opposite end of the electrical box
11, a round hole
132 located on the front cover panel
131 for the passing of an electrical wire
119a of the control circuit board
119, an extension panel
134 extended from the front cover panel
131 at right angles, and a plurality of mounting through holes
133 located on the extension panel
134 for the mounting of fastening members (not shown) to affix the LED lamp assembly
100 to a mount (not shown) in a subway tunnel or a wind tower of a wind turbine generating
system (not shown) in a parallel manner or at any desired inclined angle. Further,
the back cover plate
12 and the front cover panel
131 are affixed to the screw seats
110 of the U-shaped frame panels
111 of the electrical box
11 by screws
118.
[0015] Further, the aforesaid mounting through holes
133 are elongated and smoothly curved through holes equiangularly located on the extension
panel
134.
[0016] The light source unit
14 exhibits a rectangular configuration, having a light-transmissive surface
141 located on one side thereof, and a LED circuit board (not shown) mounted therein
and carrying a plurality of LEDs (light-emitting devices)
142. The electrical wire
119a of the control circuit board
119 is electrically connected with the LED circuit board for driving the LEDs (light-emitting
devices)
142 to emit light through the light-transmissive surface
141. Further, the light source unit
14 is fixedly fastened to the front cover panel
131 of the bracket
13 by screws
118. Thus, the light source unit
14 is joined to the electrical box
11.
[0017] As stated above, the electrical box
11 consists of the two symmetrical U-shaped frame panels
111 and the control circuit board
119. If the control circuit board
119 fails, loosen some of the screws
118 for allowing removal of one U-shaped frame panel
111 from the other, as shown in FIG. 4, and then repair or replace the control circuit
board
119. Thus, the invention facilitates dismounting of the control circuit board
119 for maintenance or repair.
[0018] Further, modifications can be made to fit different requirements. FIG. 6 illustrates
a LED lamp assembly
200 in accordance with a second embodiment of the present invention. According to this
second embodiment, the LED lamp assembly
200 comprises an electrical box
21, a back cover plate
22, a front cover plate
231, a bracket
232, and a light source unit
24.
[0019] Similar to the aforesaid first embodiment, the electrical box
21 consists of two symmetrical U-shaped frame panels
211 and the control circuit board (not shown). The light source unit
24 of this second embodiment is same as that of the aforesaid first embodiment. Further,
the back cover plate
22 covers one end of the electrical box
21, having a power input connector
221 installed therein. The power input connector
221 is openably covered with a round cap
224 for protection. When opened the round cap
224 from the power input connector
221, a power cable (not shown) can be plugged into the power input connector
221 to provide power supply to the control circuit board. Further, the back cover plate
22 has an extension panel
223 extended from the bottom side thereof at right angles, and two mounting through holes
222 located on the first extension panel
223.
[0020] The front cover plate
231 covers the opposite end of the electrical box
21. The bracket
232 is affixed to one end of the light source unit
24 opposite to the front cover plate
231, having an extension panel
234 extended from the bottom side thereof at right angles and a plurality of mounting
through holes
233 located on the extension panel
234. Fastening members (not shown) are mounted in the mounting through holes
222 of the back cover plate
22 and the mounting through holes
233 of the bracket
232 to affix the LED lamp assembly
200 to a mount (not shown) in a subway tunnel or a wind tower of a wind turbine generating
system (not shown).
[0021] Further, a power output connector
212 is mounted at the outside wall of one U-shaped frame panel
211 of the electrical box
21 for power output. The power output connector
212 is openably covered with a round cap
213 for protection.
[0022] In the aforesaid second embodiment, the mounting through holes
222 and
233 are respectively located on the back cover plate
22 and the bracket
232 at two distal ends of the LED lamp assembly
200 to fit a different installation requirement.
[0023] Although particular embodiments 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.
1. A LED lamp assembly (100), comprising:
an electrical box (11) comprising two symmetrical U-shaped frame panels (111) fastened
together to exhibit a rectangular configuration and a control circuit board (119)
mounted in between said two U-shaped frame panels (111), each said U-shaped frame
panel (111) comprising a horizontal wall (112), a first upright wall (113) and a second
upright wall (114), said first upright wall (113) and said second upright wall (114)
being respectively perpendicularly extended from two opposite lateral sides of said
horizontal wall (112) in a parallel manner, said first upright wall (113) comprising
a coupling groove (115) located on a bottom edge thereof, said second upright wall
(114) comprising a coupling flange (116) located on a bottom edge thereof, the coupling
flange (116) and coupling groove (115) of one said U-shaped frame panel (111) being
respectively fastened to the coupling groove (115) and coupling flange (116) of the
other said U-shaped frame panel (111), the horizontal wall (112) of each said U-shaped
frame panel (111) comprising two mounting grooves (117) located on an inside wall
thereof in a parallel manner, said control circuit board (119) being affixed to the
mounting grooves (117) of one said U-shaped frame panel (111) by screw nails (118),
said control circuit board (119) comprising an electrical wire (119a) electrically
connectable to a light source unit (14);
a back cover plate (12) covering one end of said electrical box (11), said back cover
plate (12) having installed therein a power input connector (121) electrically connected
to said control circuit board (119) of said electrical box (11) for input of an external
power supply;
a bracket (13) comprising a front cover panel (131) covering an opposite end of said
electrical box (11), a round hole (132) located on said front cover panel (131) for
the passing of the electrical wire (119a) of said control circuit board (119), an
extension panel (134) extended from said front cover panel (131) at right angles,
and a plurality of mounting through holes (133) located on said extension panel (134)
for fastening to an external mount; and
a light source unit (14) affixed to said front cover panel of said bracket by screws,
said light source unit (14) comprising a rectangular configuration, a light-transmissive
surface (141) located on one side thereof, and a LED (142) circuit board mounted therein
and carrying a plurality of light-emitting devices, said LED (142) circuit board being
electrically connected with the electrical wire (119a) of said control circuit board
(119) for enabling said control circuit board (119) to control said light-emitting
devices to emit light through said light-transmissive surface (141).
2. The LED lamp assembly (100) as claimed in claim 1, wherein each said U-shaped frame
panel (111) further comprises two elongated screw seats (110) respectively located
on an inside wall thereof at the junction between the horizontal wall (112) and each
of the first upright wall (113) and second upright wall (114) thereof; said front
cover panel (131) of said bracket (13) and said back cover plate (12) are respectively
affixed to the screw seats (110) of said U-shaped frame panels (111) of said electrical
box (11) by screws (118).
3. The LED lamp assembly (100) as claimed in claim 1, wherein the mounting through holes
(133) of said bracket (13) are elongated and smoothly curved through holes equiangularly
located on the extension panel (134) of said bracket (13).
4. A LED lamp assembly (200), comprising:
an electrical box (21) comprising two symmetrical U-shaped frame panels (211) fastened
together to exhibit a rectangular configuration and a control circuit board (119)
mounted in between said two U-shaped frame panels (211), each said U-shaped frame
panel (211) comprising a horizontal wall (112), a first upright wall (113) and a second
upright wall (114), said first upright wall (113) and said second upright wall (114)
being respectively perpendicularly extended from two opposite lateral sides of said
horizontal wall (112) in a parallel manner, said first upright wall (113) comprising
a coupling groove (115) located on a bottom edge thereof, said second upright wall
(114) comprising a coupling flange (116) located on a bottom edge thereof, the coupling
flange (116) and coupling groove (115) of one said U-shaped frame panel (211) being
respectively fastened to the coupling groove (115) and coupling flange (116) of the
other said U-shaped frame panel (211), the horizontal wall (112) of each said U-shaped
frame panel (211) comprising two mounting grooves (117) located on an inside wall
thereof in a parallel manner, said control circuit board (119) being affixed to the
mounting grooves (117) of one said U-shaped frame panel (211) by screw nails (118),
said control circuit board (119) comprising an electrical wire (119a) electrically
connectable to a LED (142) circuit board;
a back cover plate (22) covering one end of said electrical box (21), said back cover
plate (22) having installed therein a power input connector (221) electrically connected
to said control circuit board (119) of said electrical box (21) for input of an external
power supply, said back cover plate (22) comprising an extension panel (234) extended
from a bottom side thereof at right angles and a plurality of mounting through holes
(233) located on the extension panel (234) for fastening to an external mount;
a front cover plate (231) covering an opposite end of said electrical box (21);
a light source unit (24) affixed to said front cover plate (231), said light source
unit (24) comprising a light-transmissive surface (141) located on one side thereof,
and a LED (142) circuit board mounted therein and carrying a plurality of light-emitting
devices, said LED (142) circuit board being electrically connected with the electrical
wire (119a) of said control circuit board (119) for enabling said control circuit
board (119) to control said light-emitting devices to emit light through said light-transmissive
surface (141); and
a bracket (232) affixed to one end of said light source unit (24) opposite to said
front cover plate (231) and said electrical box (21), said bracket (232) comprising
an extension panel (234) extended from a bottom side thereof at right angles and a
plurality of mounting through holes (233) located on the extension panel (234) for
fastening to the external mount to which the extension panel (234) of said back cover
plate (22) is affixed.
5. The LED lamp assembly (200) as claimed in claim 4, wherein said electrical box (21)
further comprises a power output connector (212) mounted at an outside wall of one
said U-shaped frame panel (211) for power output, and a round cap (213) for closing
said power output connector (212).