JPH0537366Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial Application Field) The present invention relates to a lighting fixture having a louver for preventing the reflection of lighting onto, for example, a CRT screen of OA equipment.

(Prior Art) This type of lighting equipment conventionally has a reflector 3 disposed inside a main body 2 having an opening 1 on the lower surface, as shown in FIGS. 5 and 6, for example. A lamp 4 is disposed below the reflector 3, and a louver 5 is disposed inside the opening 1, and an annular frame 6 supporting the louver 5 can be raised and lowered relative to the instrument body 1. installed on.

The louver 5 includes a vertical louver 7 and a horizontal louver 8.
A vertical louver 10 and a horizontal louver 11 having a substantially V-shaped cross section are installed in a substantially cross-shaped combination inside a louver frame 9 formed by combining the vertical louvers 7 and 10 into a rectangular frame shape. A louver reflective surface 12 is provided on opposing surfaces of the horizontal louvers 8 and 11 to restrict reflection in a predetermined horizontal light shielding angle θ range.
2 is finished with a mirror surface by pasting an aluminum film, for example, to increase reflection efficiency. Furthermore, bent portions 13 and 14 are provided at the upper and lower ends of the vertical louver 7 and the horizontal louver 8 of the louver frame 9 to be bent horizontally outward for reinforcement, while the vertical louver 10 and the horizontal louver 11 The top edge remains straight upwards.

(Problem to be Solved by the Invention) In the above-mentioned lighting equipment, when the louver frame 9 of the louver 5 is assembled, the end face of the bent part 14 of the vertical louver 7 and the end face of the bent part 14 of the horizontal louver 8 are Since the louver 5 is only butted against the reflector 3, a gap is likely to occur, and when the louver 5 is assembled into the fixture body 1 and the lamp 4 is lit, as shown in FIG. There is a problem in that the light that has entered the outside leaks to the outside through the gap between the bent portions 14 of the vertical louver 7 and the horizontal louver 8, and the appearance of the lighting equipment is spoiled.

Note that light leakage is visible from between the bent portions 14 because the bent portions 14 are bent approximately horizontally outward with respect to the vertical louvers 7 and the horizontal louvers 8, and the direct sunlight of the lamp 4 is This is because it is slightly darker than the louver reflecting surface 12 that is exposed to light. This bent portion 14 is absolutely necessary in order to support the louver 5 by being placed and fitted onto the step portion inside the frame body 6.

The present invention has been developed in view of the above-mentioned points, and allows light to be emitted from between the joint between the bent portion of the vertical louver and the bent portion of the horizontal louver for mounting and fitting on the frame supporting the louver. The object of the present invention is to provide a lighting fixture that can prevent leakage.

[Structure of the idea]

(Means for solving the problem) The present invention includes an instrument body having an opening on the lower surface,
a lamp disposed inside the instrument body; a louver disposed inside the opening of the instrument body;
In the lighting fixture, the louver has a frame body that supports the louver with respect to the fixture main body, and has a louver fitting part for mounting and fitting the lower end peripheral part of the louver. It has a louver frame which is assembled into a frame shape, and the lower end edges of the vertical louver and horizontal louver of this louver frame are bent outward and approximately horizontally, and are placed and fitted into the louver fitting portion of the frame body. A connecting portion is provided at least at both ends of the bent portion to be folded upward in a substantially U-shape to form a connecting groove between the bent portion and the upper surface of the bent portion. , each end of the connector is formed into a substantially L-shape that matches the joint shape of the end portions of the vertical louver and the horizontal louver, and has convex portions projecting upward near both ends of the connector. It is inserted and coupled between the connecting grooves of both connecting parts.

(Function) In the present invention, by inserting and coupling each end of the connecting tool between the connecting grooves of both the connecting portions of the vertical louver and the horizontal louver, the upper surface between the bent portions of the vertical louver and the horizontal louver is connected to the connecting tool. Furthermore, since the convex parts protruding upward near both ends of the connector press the lower surface of the connector tightly against the upper surface of the bent part, the light entering between the louver frame and the fixture body is folded. The connector prevents light from reaching between the curved parts and prevents light from leaking from the bottom surface of the louver.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In Fig. 4, reference numeral 21 denotes the appliance body, which is provided in the shape of a rectangular box frame with an opening 22 on the lower surface, is embedded in the ceiling surface through the opening 24 of the ceiling plate 23, and is bent outward at the lower end. bent part 25
is joined to the lower edge of the opening 24.

A reflector 26 is disposed inside the instrument main body 21, and the reflector 26 is combined with an upper reflector 27 and annularly bent diagonally downward from the edge of the upper reflector 27. The upper reflector plate 27 is attached to the reflector mounting frame 29 attached to the inner lower surface of the instrument main body 21 by screws 3.
It is fixed at 0.

Two lamps 31 are disposed below the reflector 26, and each lamp 31 has a base portion 32 at one end, as shown in FIG.
Two substantially U-shaped lamp tubes 33 protrude from the lamp in parallel, and as shown in FIG. By fitting the middle part of the lamp tube 33 into the
One lamp tube 33 is installed in parallel to the reflector 26 with the base portion 32 facing in the opposite direction.

A louver 36 is disposed inside the opening 24 of the instrument main body 21, and this louver 36 has a louver frame 37 in the shape of a rectangular frame.
is a vertical louver 38 along the axial direction of the lamp 31
and a horizontal louver 39, and as shown in FIG. 2, a plurality of caulking protrusions 40 protruding from both ends of the vertical louver 38 are inserted from the inside into each caulking hole 41 provided at both end edges of the horizontal louver 39. By caulking the outer surface of the horizontal louver 39, it is connected in a rectangular frame shape.

Further, a substantially cross-shaped louver body 42 is installed between the inner sides of the louver frame 37, and this louver body 42 is composed of a vertical louver 43 and a horizontal louver 44, each having a substantially V-shaped cross section. Fitting groove 4 provided in
5 and a fitting groove 46 provided at the upper center of the horizontal louver 44.
The plurality of caulking protrusions 47 protruding from both ends of the vertical louver 43 and the plurality of caulking protrusions 48 protruding from both ends of the horizontal louver 44 are fitted together and combined in a substantially cross shape. It is inserted from the inside into each caulking hole 49 provided in the center of the horizontal louver 39 of the frame 37 and each caulking hole 50 provided in the center of the vertical louver 38, and is caulked to each outer surface.

Further, on the opposing surfaces of each vertical louver 38, 43 and each horizontal louver 39, 44, a reflecting surface 51 having a shape that restricts reflection to a predetermined horizontal light shielding angle θ is provided,
This reflective surface 51 is finished into a mirror surface by pasting an aluminum film, for example.

Further, at the upper end of the vertical louver 38 of the louver frame 37, a reflective slope 52 whose upper end side is inclined outward is connected to the upper end of the reflective surface 51, and at the upper end of the horizontal louver 39. is provided with a reinforcing portion 53 that is bent horizontally toward the outside, and is provided with a cutout portion 54 for preventing interference with the socket 34 of the lamp 31. On the other hand, at the lower ends of both louvers 38 and 39 of the louver frame 37, as shown in FIG. A connecting portion 58 that is horizontally bent above the bent portion 55 and has a generally U-shaped cross section and has a connecting groove 57 between the bent portion 55 and the connecting piece portion 56.
The end of this connecting portion 58 is provided in an inclined shape so as to be combined with the end of the other connecting portion 58 at right angles. Then, the vertical louver 38 and the horizontal louver 39
When combining with the connecting part 58, each end of the approximately L-shaped connecting tool 59 that matches the joining shape of the ends of the vertical louver 38 and the horizontal louver 39 is press-fitted into the connecting groove 57 of the connecting part 58 to connect them. This connector 59
The width of each end is as wide as possible within the range that can be inserted into the connecting groove 57, and the width of each end is larger than the vertical groove width of the connecting groove 57, including the plate thickness of the connecting tool 59. A semicircular dowel-shaped convex portion 60 having a large thickness is provided respectively.

Moreover, each louver 43, 44 of the louver body 42
At the upper end, a reflective surface 52 whose upper end side is inclined inward is provided continuously to the upper end of the reflective surface 51 .

A frame 61 is disposed around the lower end of the instrument main body 21, and this frame 61 is provided in the same square frame shape as the lower end shape of the instrument main body 21, and has a bent edge 25 of the instrument main body 21 on the outside. A cover part 62 is provided which hides and joins to the ceiling board 23, and a louver fitting part 6 on the inside of which the bent part 55 of the louver 36 fits and rests.
3 is provided, and is connected to the inner surface of the instrument main body 21 via a V spring 64 connected to the upper end of the louver fitting part 63, so that it can be raised and lowered with the louver 36 placed on the instrument main body 21. It's summery.

In addition, a stabilizer 65 is provided on the inner lower surface of the instrument body 21.
A lighting tube socket (not shown) is attached.

Next, the operation of the present invention will be explained.

When the lamp 31 is turned on, there are direct light from the lamp 31 and reflected light reflected from the reflector 26 and the louver 36 from the opening 22 of the fixture body 21. In addition to the light reflected by the reflective surface 51 of the louver 36, the light reflected from the reflector 26 is reflected by the reflective slope 52 of the vertical louver 38 of the louver frame 37, and the reflective slope of both louvers 43 and 44 of the louver body 42. The light reflected at 52 is included.

Furthermore, when the lamp 31 is lit, the louver frame 37 is
Light enters the outside of the louver frame 37, but a connector 59 is inserted between the connecting portions 58 of the vertical louver 38 and the horizontal louver 39 of the louver frame 37, and the bent portion of the vertical louver 38 and the horizontal louver 39 Since the connecting tool 59 covers the upper surface between the bending parts 55 and the convex portions 60 protruding upward near both ends of the connecting member 59, the lower surface of the connecting member 59 is pressed tightly against the upper surface of the bent part 55, so that the light is not transmitted. The connector 59 reliably prevents the light from reaching between the bent portions 55, thereby preventing light from leaking on the lower surface of the louver.

Further, by press-fitting the connector 59 into the connecting groove 57 of the connecting portion 58 of the vertical louver 38 and the horizontal louver 39, the tight contact state of the connecting portion 58 can be maintained and the rigidity of the louver 36 can be increased.

Note that the connecting portions 58 of the vertical louver 38 and the horizontal louver 39 may be provided at both ends where the connecting tool 59 is connected, and the intermediate portion of the vertical louver 38 and the horizontal louver 39 may have a configuration in which only the bent portion 55 is provided. .

Furthermore, in the embodiment, the convex portion 6 of the connector 59
Although 0 is in the shape of a semicircular dowel, it may be cut and raised with an inclined surface in the insertion direction of the connecting portion 58.

[Effect of idea]

According to the present invention, each end of the connector is inserted and connected between the connecting grooves of both the vertical louver and the horizontal louver, so that the upper surface between the bent portions of the vertical louver and the horizontal louver is connected with the connector. In addition, since the convex portions protruding upward near both ends of the connector press the lower surface of the connector tightly against the upper surface of the bent portion, light entering between the louver frame and the fixture body is bent. The connector reliably prevents the light from reaching the parts, thereby preventing light from leaking from the bottom surface of the louver.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the lighting fixture of the present invention, Fig. 2 is an exploded perspective view of its louver, Fig. 3 is a perspective view of a part thereof, and Fig. 4 is a cross section of the lighting fixture. 5 is a sectional view of a conventional lighting fixture, and FIG. 6 is a perspective view of its louver. 21... Instrument body, 22... Opening, 31...
Lamp, 36... Louver, 37... Louver frame, 3
8...Vertical louver, 39...Horizontal louver, 55...Bending portion, 57...Connecting groove, 58...Connecting portion, 59...
...Connector, 60...Protrusion, 61...Frame, 63...
...Louver fitting part.

Claims (1)

[Claims for Utility Model Registration] An appliance body having an opening on the lower surface, a lamp disposed inside the appliance body, a louver disposed inside the opening of the appliance body, and a lower end of the louver. In the lighting equipment, the louver has a frame body that supports the louver with respect to the fixture body and has a louver fitting part for placing and fitting the peripheral part, and the louver is constructed by assembling a vertical louver and a horizontal louver in a rectangular frame shape. The louver frame has a louver frame, and the lower end edges of the vertical louvers and horizontal louvers of the louver frame are bent outwards and approximately horizontally, and are placed and fitted into the louver fitting portions of the frame body. A bent portion is provided, and a connecting portion is provided at least at both ends of the bent portion to form a connecting groove by folding upward in a substantially U-shape above the bent portion to form a connecting groove between the vertical louver and the upper surface of the bent portion. Each end of the connector is formed into a substantially L-shape that matches the joining shape of the end of the horizontal louver, and has convex portions protruding upward near both ends of the connector. A lighting fixture characterized by being inserted and coupled between the connecting grooves.