JPH0524093Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Industrial application field) This invention can be used for example in a room where OA equipment is installed.
This invention relates to a lighting fixture having a louver to prevent lighting from reflecting on a CRT screen, etc.

(Prior Art) This type of lighting fixture is used as a ceiling-embedded type, and as shown in FIGS. 4 and 5, for example, a fixture main body 2 having an opening 1 on the lower surface is embedded in a ceiling surface 3. At the same time, the mounting edge 4 bent outward from the lower peripheral edge of the appliance main body 2 is brought into contact with the ceiling surface 3,
Further, a reflector 5 is disposed inside the instrument body 2, and a lamp 6 is disposed below the reflector 5.
Further, a louver 7 is disposed inside the opening 1, and a frame 8 is disposed to support the peripheral edge of the louver 7 and cover the mounting edge 4 of the instrument body 2 from below.

The louver 7 is integrally formed by combining a plurality of vertical louvers and horizontal louvers in an intersecting manner, and the light from the lamp 6 is directed to a predetermined horizontal shading angle θ range on the opposing surface of each vertical louver and each horizontal louver. A parabolic louver reflective surface 9 is provided to restrict reflection, and the louver reflective surface 9 is finished with a mirror surface, for example, by pasting an aluminum film, etc., to increase reflection efficiency.

The frame body 8 is made of a surface-treated steel plate with a white surface finish, for example, and has a rectangular frame shape that is approximately the same as the lower end of the instrument body 2 and the peripheral edge of the louver 7, and is connected to the horizontal frame portion 10 and the horizontal frame portion 10. An inclined frame part 12 is bent obliquely upward from the inner peripheral edge of the frame part 10, and a support surface 13 is bent horizontally outward from the upper end of this inclined frame part 12 and on the upper surface of which the peripheral edge of the louver 7 rests. a support frame portion 14 having a support frame portion 14; a light-shielding frame portion 15 that is bent upward from the outer end of the support frame portion 14 and closely faces the inside of the instrument body 2; An outer frame portion 16 whose portion abuts against the ceiling surface 3
It is attached to the instrument main body 2 via a V spring 17 attached to the light-shielding frame part 15 so as to be movable up and down.

However, in the above-mentioned lighting equipment, the louver 7
The outermost louver reflective surface 9 is the support surface 13 of the frame 8
Since the support surface 13 is located on the outer side of the louver and faces the outermost louver reflection surface 9, the light L incident on the support surface 13 from the lamp 6 is reflected and enters the outermost louver reflection surface 9. The light is reflected by the louver reflective surface 9 and exits within the range of the shielding angle θ, causing the illumination light to be reflected on a CRT screen or the like.

Therefore, by painting the support surface 13 of the frame 8 black, the light L incident from the lamp 6 is
However, since it is necessary to paint the frame 8 separately into a white part and a black part, the painting process is time-consuming, and a special frame 8 separate from the standard type is prepared. There is a need. In addition, the frame body 8
It is possible to make the whole thing black, but the ceiling surface 3
The appearance of the room deteriorates and the atmosphere of the room becomes dark.

Further, as shown in Japanese Utility Model Application No. 61-139507, for example, a hook part is provided on the outer edge of the louver in a state that projects outward, and this hook part is hooked to the frame for support. Therefore, there is a structure in which a frame is placed outside the louver, but the structure of the part where the louver is attached to the frame is specialized, and it is necessary to match the shape of the louver and the attachment part of the frame. A dedicated frame for the louver is used, and there are many types of frames, making standardization difficult.

(Problem to be solved by the invention) As mentioned above, since the support surface of the frame faces the louver reflection surface of the louver, the light reflected by the support surface of the frame comes out within the range of the shading angle θ. There is a problem,
Even if the frame is painted black, it is time consuming and the appearance deteriorates, and if the frame is placed outside the louver, the louver becomes specialized, making it difficult to standardize the frame. Become.

The present invention was developed in view of the above-mentioned problems, and prevents the light from the light source from being reflected from the frame supporting the louver of the reflector and exiting to a predetermined horizontal shading angle area. Another object of the present invention is to provide a lighting fixture that can use a standard type frame.

[Structure of the idea]

(Means for solving the problem) The present invention includes a device body having an opening on the bottom surface,
A louver disposed inside the opening of the instrument body and having a louver reflecting surface shaped to restrict reflection in a predetermined horizontal light-shielding angle region; In the lighting equipment, a black plate having an inner edge protruding inwardly than the inner edge of the frame is attached to the upper part of the support surface of the frame that supports the louver, and the black plate is A louver is supported at the top.

(Function) In this invention, there is very little reflection of light incident from the light source on the black plate attached to the support surface that supports the louvers of the frame body, and this reflected light is reflected by the outermost louver reflective surface, resulting in a light blocking angle. Even if it appears within the range, its brightness is weak. Moreover, the inner edge of the black plate protrudes inward from the inner edge of the frame, preventing light from the light source from entering the inner edge of the frame, and allowing light from the inner edge of the frame to fall within the shading angle range. Prevent light from being reflected. Since the black plate only needs to be interposed between the supporting surface of the frame and the louver, standard types can be used for the louver and the frame.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

Note that the same reference numerals are used for the same parts as those shown in FIGS. 4 and 5, and the explanation thereof will be omitted.

In the figure, the lighting fixture includes a rectangular box-shaped fixture body 2 with an opening 1 on the bottom surface, and a fixture body 2.
a reflector 5 and a straight tube-shaped lamp 6 housed inside the instrument body 2; and a louver reflecting surface 9 disposed inside the opening 1 of the instrument body 2 and shaped to restrict reflection in a predetermined horizontal light shielding angle θ range. a louver 7 having a
The frame body 8 covers the lower end peripheral edge of the louver 7 and supports the peripheral edge of the louver 7.

In addition, 21 is a black board, the surface of which has been treated with black.
A support plate portion 22 that rests on the support surface 13 of the frame body 8 and a mounting plate portion 23 that is joined to the inside of the light-shielding frame portion 15 are formed into a substantially L-shaped cross section. It is longer than the width of the supporting surface 13 of

Then, the support plate portion 2 is placed on the support surface 13 of the frame body 8.
At the same time, the mounting edge 23 is joined to the inside of the light shielding plate 15 to attach the black plate 21, and the peripheral edge of the louver 7 is placed on the upper surface of the support plate 23 of the black plate 21 to assemble.

In this assembled state, the support plate portion 22 of the black plate 21
The inner edge of the support plate 22 protrudes inward from the inner edge of the support surface 13 of the frame 8, and the upper surface of the support plate 22 faces the outermost louver reflective surface 9 of the louver 7.

Then, from the lamp 6 to the support plate part 2 of the black plate 21,
The light L incident on the upper surface of 2 has very little reflection on the support plate part 22, and even if this reflected light is reflected on the outermost louver reflective surface 9 and exits within the range of the shading angle θ, its brightness will be low. Since the light is weak, it will not be reflected on CRT screens, etc.

Moreover, by making the inner edge of the support plate portion 22 of the black plate 21 protrude inwardly from the support surface 13 of the frame body 8, the bent portion between the inclined frame portion 12 and the support frame portion 14 of the frame body 8 can be bent. It is possible to prevent light from being reflected from the surface and the surface of the inclined frame portion 12 within the range of the shielding angle θ.

In addition, the black plate 21 only needs to be attached to the upper part of the support surface 13 on which the louver 7 of the frame 8 is placed, and the peripheral part of the louver 7 can be placed on the upper part of the black plate 21. A standard type louver can also be used for the louver 7.

[Effects of the invention] According to the invention, since the black plate is attached to the upper part of the support surface that supports the louver of the frame, the reflection of light incident on the black plate from the light source is very small, and this reflected light is Even if it is reflected by the outermost louver reflective surface and comes within the shading angle range, its brightness is weak, and furthermore, the inner edge of the black plate protrudes further inward than the inner edge of the frame, causing the inner edge of the frame to This prevents light from the light source from entering the frame and prevents light from being reflected from the inner edge of the frame within the shading angle range, making it possible to prevent lighting from being reflected on, for example, a CRT screen. Furthermore, since the black plate only needs to be interposed between the supporting surface of the frame and the louver, standard types can be used for the louver and the frame.

[Brief explanation of drawings]

Fig. 1 is a partial sectional view showing one embodiment of the lighting device of the present invention, Fig. 2 is an overall sectional view thereof, and Fig. 3
The figure is a perspective view thereof, FIG. 4 is a sectional view of a part of the conventional lighting fixture, and FIG. 5 is a sectional view of the whole. 1... Opening, 2... Instrument body, 7... Louver, 8... Frame, 9... Louver reflective surface, 13...
Support surface, 21...black board.

Claims (1)

[Scope of Claim for Utility Model Registration] A louver having a main body having an opening on the lower surface and a louver reflecting surface disposed inside the opening of the main body and having a shape to restrict reflection in a predetermined horizontal shading angle range. and a frame body that covers a lower end peripheral edge portion of the fixture body and supports a peripheral edge portion of the louver, wherein an inner edge portion of the frame body is located above a support surface that supports the louver of the frame body. A lighting device characterized in that a black plate is attached that projects inward from an inner edge, and a louver is supported on the upper part of the black plate.