JPH024408Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a lighting device, particularly a lighting device formed by assembling a frame having a U-shaped cross section into a rectangular shape.

(Prior Art) A lighting fixture is sometimes constructed by assembling a rectangular frame having a U-shaped cross section as the fixture body, and storing a fluorescent lamp inside each frame. To connect these frames to each other and assemble them into a rectangular shape, the ends of each frame are joined at right angles, and in order to maintain the strength of the joined part, a pad is applied along the entire circumference, and screws or rivets are used. I tried to make it stick more firmly. However, this has drawbacks such as the fixing work is extremely troublesome and the mechanical strength is also poor.

(Problems to be solved by the invention) This invention aims to simplify the connection and fixation of each frame when the main body of the device is constructed by assembling frames having a U-shaped cross section into a rectangular shape. The purpose is to improve strength as well as mechanical strength.

(Means for solving the problem) This invention is a lighting fixture in which each end of a frame having a U-shaped cross section is joined at right angles to each other to assemble a rectangular fixture body, in which the ends are joined to each other. A plurality of bridging pieces are provided on the upper wall of one of the frames, and claw pieces are provided on the upper wall of the other frame that overlaps the one upper wall, and the claw pieces are provided with the upper walls overlapped. The bridging piece is inserted through the bridging piece to connect the upper walls to each other, and a bridging piece is formed by a plurality of cut-and-raised edges at each outer connecting edge of the outer wall and inner wall of each frame. By fixing the pads by welding and inserting the insertion portions formed on each piece of the L-shaped connecting fitting into the inside of the bridging piece of each pad. The frame is characterized in that the edges of each frame are connected and fixed to each other via the connecting fitting and the stopper.

(Example) An example of this invention will be described with reference to the drawings. Reference numerals 1 and 2 denote frames having a U-shaped cross section, and the instrument main body 3 is constructed by assembling each pair of frames facing each other into a rectangular shape as shown in FIG. The lighting fixture is then completed by housing fluorescent lamps and the like inside each of the frames 1 and 2. Note that here, since it is constructed with four frames 1 and 2, if each frame accommodates one fluorescent lamp, the total number of fluorescent lamps used is four.

A plurality of holes 4 are formed at both ends of the upper wall 3 of one frame 1, and claw pieces 5 are made to protrude from the periphery of the holes 4. Further, at both ends of the upper wall 6 of the other frame 2, the upper wall 6
Bridging pieces 7 are formed by cutting and bending at a plurality of locations facing the holes 4 when stacked on the surface of the upper wall 3.

Also, when both frames 1 and 2 are butted together at right angles,
The edges of the inner walls 8, 9 and outer walls 10, 11 of each frame 1, 2 are brought into contact with each other. For this purpose, the plane including the edges of both the inner and outer walls may be inclined at 45 degrees with respect to the surfaces of the inner and outer walls.

A pad 12 is fixed to each edge of the inner walls 8, 9 by spot welding. A plurality of bridging pieces 13 are formed on this pad 12 by cutting and bending. Also, abutment 14 is fixed to each edge of the outer walls 10, 11 by spot welding. A plurality of bridging pieces 15 are also formed on this stopper 14 by cutting and bending.

Reference numerals 16 and 17 are both L-shaped connecting fittings, and each piece 18 bent at right angles has a plurality of insertion portions 19 formed along its length. The connecting fitting 16 is connected to the deposit 12, and the connecting fitting 1
7 is used for winnings 14.

To assemble the frames 1 and 2, first, the upper wall 6 is superimposed on the surface of the upper wall 3. Then, the bridging piece 7 is dropped into the hole 4 and moved, and the claw piece 5 is inserted into the bridging piece 7. As a result, both upper walls 3 and 6 are connected so as to be restrained from separating in the vertical direction.
In this state, the edges of both frames are brought into contact with each other.

Next, these end edges are connected and fixed together by connecting fittings 16 and 17 using the butts 12 and 14.
For this purpose, each insertion portion 19 of the connecting fitting 16 is inserted into the bridging piece 13 of the stopper 12 fixed to the inner walls 8, 9 by being pushed from above. In the same way, connect each insertion part 19 of the connecting fitting 17 to the outer wall 10, 11.
It is inserted into the bridging piece 15 of the stopper 14 fixed to the plate by pushing it from above.

By inserting the insertion portion 19 into the bridging pieces 13 and 15, the inner walls 8 and 9 and the outer walls 10 and 11 are connected to each other by the connecting fittings 16 and 17. If other frames are connected in the same way, a rectangular instrument body can be constructed.

According to such an assembly process, it is sufficient to insert the claw piece 5 into the bridging piece 7 and the insertion piece 19 into the bridging pieces 13 and 15, so the assembly work is simple. It is very easy to do, and the frames can be connected firmly.

(Effects of the Invention) As detailed above, this invention has the advantage of providing a lighting fixture that has great mechanical strength and is extremely easy to assemble.

[Brief explanation of the drawing]

Both Figures 1 and 2 are exploded perspective views of the main parts showing an embodiment of this invention, Figure 3 is a sectional view of the frame, and Figure 4 is a cross-sectional view of the frame.
The figure is a perspective view of the main body of the device according to this invention. 1, 2... Frame, 3, 6... Top wall, 4... Hole, 5
...Claw piece, 7...Bridging piece, 8,9...Inner wall, 1
0,11...Outer wall, 12,14...Money, 13,
15... Bridging piece, 16, 17... Connecting metal fittings, 19
...Insert piece.

Claims (1)

[Scope of utility model registration request] In a lighting fixture that is constructed by assembling a rectangular fixture body by joining each end of a frame with a U-shaped cross section at right angles to each other, a plurality of bridges are installed on the upper wall of one of the frames whose ends are joined to each other. A claw piece is provided on the upper wall of the other frame that is overlapped with the one wall, and with the both upper walls overlapped, the claw piece is inserted through the bridging piece to connect the both upper walls to each other. They are connected to each other, and to the outer joint edges of the outer and inner walls of each frame, welding is used to fix abutment formed by a plurality of cut-and-raised bridging pieces, and an L-shaped By inserting the insertion portion formed on each piece of the connecting fitting bent into the inside of the bridging piece of each stopper, the edges of each frame are connected to the connecting fitting and Lighting equipment that is connected and fixed via a metal.