JP2008251279A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire capable of reducing the glare of a lamp without impairing its appearance design. <P>SOLUTION: This luminaire is composed of a luminaire body 1 in a shape of an almost rectangular parallelepiped which has an opening at its under surface, four sockets 2 which are housed in the luminaire body 1 and to each of which one discharge lamp L is detachably mounted, a lattice-shaped louver frame 3 mounted so as to cover the opening of the luminaire body 1, and a diffusion plate 4 to cover the entire surface of the opening of the luminaire body 1. The louver frame 3 has a longitudinal louver piece 30, and the diffusion plate 4 is disposed between the louver frame 3 mounted to the upper end of the louver frame 3 and the socket 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting fixture.

Conventionally, it has a backlight composed of a light source such as a discharge lamp and a liquid crystal display panel irradiated with light from the backlight, and is disposed on the emission surface side of the liquid crystal display panel and irradiated from the backlight. There has been provided a lighting fixture provided with a diffusion plate that diffuses outgoing light passing through a liquid crystal display panel, for example, as disclosed in Patent Document 1. In addition, a lighting fixture is provided in which a louver frame including a plurality of louvers is disposed in an opening of a fixture main body in which a light source such as a discharge lamp is housed in order to limit glare. There is something like that.
JP 2000-267582 A Japanese Utility Model Publication No. 5-17830

  However, in the luminaire as described in Patent Document 1, when the distance between the backlight and the diffusion plate is short, the diffusion of light from the backlight by the diffusion plate is not sufficient, and the bright place As a result, dark spots appear and color unevenness occurs, which impairs the design. Moreover, in the lighting fixture as described in the said patent document 2, since the light from a discharge lamp entered directly into eyes through between louvers, there existed a problem of feeling dazzling.

  This invention is made | formed in view of said point, and it aims at providing the lighting fixture which can reduce the glare of a lamp | ramp, without impairing the designability.

  In order to achieve the above object, the invention of claim 1 is a box-shaped instrument body having an opening on one side thereof, and a lamp is detachably mounted in the instrument body, and is arranged in parallel at a predetermined interval. A plurality of sockets, a plurality of louvers provided so as to cover the opening of the instrument body and disposed between at least adjacent lamps, and a socket and the louver so as to cover the entire opening of the instrument body. And a diffusing plate for diffusing light from the lamp.

  According to the present invention, since the diffusion plate that covers the entire opening of the instrument body is provided between the socket and the louver, the light emitted from the lamp and passing between the louvers passes through the diffusion plate. The light does not enter the eyes directly, and thus the glare can be reduced. Further, since the louver is arranged at least between the lamps adjacent to each other, it is possible to make only the bright part visible by hiding the dark part by the louver compared to the other part between the lamps, and thus uneven color. It is possible to prevent the designability from being impaired.

  Hereinafter, embodiments of a lighting apparatus according to the present invention will be described with reference to the drawings. In the following description, the vertical and horizontal directions in FIG. 1 are defined as the vertical and horizontal directions. In the present embodiment, as shown in FIGS. 1 and 2, a substantially rectangular parallelepiped instrument body 1 having an open bottom surface, and a plurality of discharge lamps L that are housed in the instrument body 1 and are each detachably mounted. (In this embodiment, four) sockets 2, a lattice-like louver frame 3 attached so as to cover the opening of the instrument main body 1, and a diffusion plate 4 covering the entire opening of the instrument main body 1.

  A flange 10 is provided around the entire periphery of the opening of the instrument body 1. When the instrument body 1 is disposed in the embedded hole A1 provided between the adjacent ceiling plates A, the flange 10 is provided. 10, the end of the ceiling plate A is placed.

  A substantially rectangular parallelepiped base 13 is provided on the upper surface inside the appliance body 1, and a power is supplied to the discharge lamp L via the socket 2 at the right end in the base 13 as shown in FIG. 1. Are attached (one in the figure). Further, insertion holes (not shown) through which the suspension bolts 11 provided on the ceiling casing (not shown) are inserted are provided at the four corners on the upper surface of the instrument body 1. Thus, the instrument body 1 is suspended from the ceiling casing by inserting the suspension bolt 11 through the insertion hole and tightened, and the end of the ceiling plate A is placed on the flange 10 of the instrument body 1. The embodiment is arranged in the embedded hole A1.

  The socket 2 has a so-called one-piece base structure, and is arranged in parallel at a predetermined interval in the left-right direction on one side surface inside the instrument body 1 as shown in FIG. The discharge lamp L of the present embodiment attached to the socket 2 has a substantially U-shape consisting of two long straight tube portions and a bent portion that connects the ends of the straight tube portions. A base provided at an end of the straight pipe portion opposite to the bent portion is detachably attached to the socket 2.

  A reflector 6 that covers each discharge lamp L is attached to the lower surface of the base 13. The reflection plate 6 is made of a metal plate, and is bent so that a substantially triangular protrusion 60 protruding downward is disposed between the discharge lamps L adjacent to each other.

  The louver frame 3 has a plurality of (three in the figure) arranged in a substantially V-shaped cross section and having a longitudinal direction substantially coinciding with a longitudinal direction of the discharge lamp L at positions between adjacent discharge lamps L. And a frame-shaped end louver piece 31 along the inner peripheral surface of the instrument body 1. Further, the louver frame 3 has a substantially V-shaped cross section, and a plurality of louver frames 3 are arranged so that the longitudinal direction is substantially orthogonal to the longitudinal direction of the longitudinal louver piece 30 and the longitudinal direction of the longitudinal louver piece 30 is divided into approximately 4 equal parts. It has three long lateral louver pieces 32 (in the figure, three). Thus, as shown in FIG. 2, the louver frame 3 has a lattice shape from the vertical louver piece 30, the horizontal louver piece 32, and the end louver piece 31. The louver frame 3 is attached and fixed to the inner peripheral surface of the instrument body 1 by a kick spring 12 provided on the side surface of the instrument body 1.

  The diffusing plate 4 is formed in a substantially square shape from a light transmissive material having light diffusibility, and is attached to the upper end portion of the louver frame 3 between the louver frame 3 and the socket 2 as shown in FIG. It is arranged. The diffusing plate 4 is attached to the upper end portion of the louver frame 3 by being sandwiched between two pairs (one pair in the drawing) of sandwiching pieces 33 respectively protruding from the left and right ends of the upper end portion of the louver frame 3. It is like that.

  As described above, by disposing the diffusion plate 4 between the louver frame 3 and the socket 2, light from the discharge lamp L is emitted from the opening of the instrument body 1 through the diffusion plate 4. The light from the electric lamp L can be prevented from directly entering the eyes, and therefore the glare of the discharge lamp can be reduced. Further, by disposing the vertical louver piece 30 between the discharge lamps L adjacent to each other, a portion that becomes darker than other portions can be covered with the vertical louver piece 30, and the louver frame of the diffusion plate 4 can be covered. The brightness on the entire surface excluding 3 can be made uniform. Therefore, it is possible to prevent the color unevenness from being reduced and the designability from being impaired.

It is principal part sectional drawing which shows embodiment of the lighting fixture which concerns on this invention. It is the top view seen from the lower side same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument body 2 Socket 3 Louver frame 30 Longitudinal louver piece 31 End louver piece 32 Lateral louver piece 4 Diffusion plate L Discharge lamp (lamp)

Claims (1)

  Provided so as to cover the opening of the instrument body, a box-shaped instrument body that is open on one side, a plurality of sockets that are housed in the instrument body and in which a lamp is detachably mounted and arranged in parallel at a predetermined interval. A plurality of louvers disposed between at least adjacent lamps, and a diffusion plate provided between the socket and the louver so as to cover the entire opening of the instrument body and diffusing light from the lamps. A lighting apparatus characterized by that.

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