JPS633048Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an improvement for more accurately blocking light in the direction of the blocking angle of a lighting fixture with a mirrored louver.

[Prior art]

Recently, lighting fixtures using louvers, which are comprised of louver pieces with wedge-shaped cross sections and mirror surfaces, have come into widespread use to accurately reflect light from above the louvers below the shading angle of the louvers. An example is shown in FIG. Reference numeral 1 denotes a device main body, which is box-shaped with an opening at the bottom, and the edge of the opening forms a flange 11 that is bent outward at a right angle. The appliance main body 1 is fitted into an opening 21 formed in the ceiling 2, and the flange 11 is in contact with the lower surface of the ceiling 2. 3 is the frame and the device body 1
mounted on. A louver 4 is supported with its outer periphery placed on the inner edge 31 of the frame 3. The louver 4 is a louver piece 41 with a wedge-shaped cross section and a mirror surface.
The louvers are arranged in a cross-shaped structure, and the structure is such that the light from above the louvers is always reflected or passed below the louvers, below the light-shielding angle θ of the louvers. 5 is a lamp. Although the light incident from the lamp 5 to cells other than the cells 42 on the outer periphery of the louver necessarily passes below the light-shielding angle θ of the louver,
In the cells 42 on the outer periphery of the louver, the light passing through the louver 4 illuminates the inner edge 31 of the frame 3. Louver 4
Since light from below the louver tends to be reflected within the shading angle θ of the louver, when the frame 3 shines, the cells 42 on the outer periphery of the louver direct the reflected light within the shading angle θ. As a result, the light distribution control effect was significantly impaired.

[Summary of the idea]

The present invention aims to prevent the above-mentioned loss of the light distribution control effect, and is characterized by covering the top surface of the cells on the outer periphery of the louver so that light from above the louver does not enter the inner edge of the frame.

[Example of idea]

FIG. 2 shows an embodiment of the present invention. 6 is a light-shielding frame attached to the inner wall 12 of the appliance main body 1, and is bent and extended so as to completely cover the upper surface of the cell 42 on the outer periphery of the louver. The light shielding frame 6 is configured to cover the entire circumference of the cell 42 on the outer periphery of the louver.

Further, FIG. 3 shows another embodiment of the present invention. Reference numeral 7 is a light-shielding frame consisting of a horizontal part 71 that completely covers the upper surface of the cell 42 on the outer periphery of the louver, a mounting part 72 hanging down from the outer periphery, and a screw hole 73 provided near the lower end of the louver. Taking advantage of the shape, the louver outer peripheral wall 43 is fixed to the louver 4 by tightening with a set screw 8 inserted into a screw hole 73.

[Effect of idea]

As described above, in the present invention, since light is prevented from entering the cells on the outer periphery of the louver from above the louver, the inner edge of the frame located below the cells on the outer periphery of the louver will not shine, and the light will not enter the cells on the outer periphery of the louver. Reflected light can be prevented. As a result, when the lighting fixture of the present invention is viewed from within the shading angle θ, it does not shine at all, and even considering the reduction in efficiency due to blocking the cells on the outer periphery of the louver, it does not reflect well on CRTs, etc., which have become rapidly popular in recent years. It has a great practical effect as a lighting fixture that can prevent crowding.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of an example of a conventional lighting fixture for comparison with the present invention, Figure 2 is a cross-sectional view of one embodiment of the present invention, and Figure 3 is a cross-sectional view of another embodiment of the present invention. The plan view and FIG. 4 are perspective views of the light-shielding frame of the example shown in FIG. 3. 1 is the fixture body, 2 is the ceiling, 3 is the frame, 4 is the louver, 5 is the lamp, and 6 and 7 are the light shielding plates.

Claims (1)

[Scope of utility model registration request] In a lamp that uses a louver consisting of a louver piece with a wedge-shaped cross section and a mirror surface that reflects light from the lamp into the room by placing the outer periphery above the frame and supporting the lamp, the inner edge of the frame. A lighting fixture with a mirrored louver, characterized in that the upper surface of the outer cell of the louver is covered so as to block the incidence of light from the lamp.