JP2011065782A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture capable of ensuring high quality by preventing harmful dust such as oil-mist from entering into a fixture body. <P>SOLUTION: The lighting fixture 10 is equipped with a light source 13, the fixture body 11 formed in a long box shape having an opening 18 at a bottom side for holding the light source 13, and a reflective shade 14 attached to the opening 18 of the fixture body 11. The fixture body 11 has a bent portion 21 at an edge part of the opening 18 toward an inner side with its end part directed upward. The reflective shade 14 is fixed in such a state that an upper end part of the reflecting shade 14 is inserted into the bent portion 21. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting apparatus that is used by being suspended from a ceiling in a working room in which, for example, a machine tool is placed.

  As an example of a conventional lighting fixture, there is one in which a lamp holder base is fastened to a reflector plate with a reflector mounting screw and fixed to the fixture body (see, for example, Patent Document 1).

JP 2004-158403 A (FIG. 1, claim 1)

  Normally, in lighting fixtures that are used suspended from the ceiling in a working room where machine tools are placed, when the oil mist called dust mixed with machine oils and fats enters the appliance body, The oil and fat accumulated in the body may cause corrosion on metal members such as copper plates, wire expansion, and contact failure of electrical equipment such as inverters. It is necessary to make sure that it does not enter the interior.

However, in the conventional lighting fixture disclosed in Patent Literature 1, the reflector fixing bracket that is horizontally disposed at the end of the opening of the fixture body has an upper end portion that is provided horizontally on the reflector. Abutment is fixed.
Therefore, both the oil mist adhering to the surface of the instrument main body and dropping down to the opening and the oil mist adhering to the horizontal upper end of the reflector plate enter the instrument main body from the end of the instrument main body opening. There is a risk of doing.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lighting apparatus capable of ensuring high quality by preventing harmful dust such as oil mist from entering the apparatus main body. There is to do.

  A lighting fixture according to the present invention includes a light source, a long box shape having an opening below and holding the light source, and a reflective shade attached to the opening of the fixture main body. In the lighting fixture, the fixture main body has a bent portion that is bent inwardly at the edge of the opening and the end thereof faces upward, and the reflective shade has the bent shade at the bent portion. The reflective shade is fixed in a state where the upper end portion is inserted.

In the present invention, the reflecting shade is fixed to the instrument main body by inserting the upper end thereof into a bent portion that is bent inwardly at the edge of the opening of the instrument main body and with the end facing upward.
Thereby, the oil mist adhering to the surface of the instrument main body and dripping into the opening does not enter the instrument main body from the edge of the opening due to the bent portion, and does not enter the upper end of the reflective shade.
Therefore, harmful dust such as oil mist adhering to the instrument body can be prevented from entering the instrument body.

  The luminaire according to the present invention is characterized in that, in the luminaire described above, the reflecting shade is inclined at least below the upper end inserted into the edge of the opening of the fixture body.

In the present invention, the reflective shade is inclined at least below the upper end inserted into the edge of the opening of the instrument body.
As a result, the oil mist dropped on the reflecting shade is naturally dropped by the inclined portion below the upper end of the reflecting shade.
Therefore, harmful dust such as oil mist adhering to the reflective shade can be prevented from entering the instrument body.

According to the lighting fixture of the present invention, the fixture main body has a bent portion bent at the edge of the opening inward and with its end portion facing upward, and the reflection shade at the bent portion. The reflective shade was fixed with the upper end inserted.
Accordingly, there is an effect that high quality can be ensured by preventing harmful dust such as oil mist from entering the instrument main body.

The external appearance perspective view seen from diagonally downward of the lighting fixture of one Embodiment which concerns on this invention Side view of the luminaire of FIG. Bottom view of the lighting fixture of FIG. FIG. 1 is an external perspective view of the lighting fixture shown in FIG. FIG. 1 is a vertical sectional view of the lighting fixture shown in FIG. FIG. 1 is a vertical sectional view after the installation of a reflective shade, explaining the assembly procedure of the lighting apparatus of FIG. Enlarged view of the main part of the lighting apparatus of FIG.

  Hereinafter, the lighting fixture which concerns on one Embodiment of this invention is demonstrated with reference to drawings.

  As shown in FIGS. 1, 2, and 3, a lighting fixture 10 according to an embodiment of the present invention is a fixture main body 11, a pair of sockets 12, 12, and a light source attached to the sockets 12, 12. A straight fluorescent lamp 13 and a reflective shade 14 assembled to the instrument main body 11 are provided and are suspended from a ceiling surface (not shown) and attached.

  The instrument main body 11 is made long by bending a top plate 15, a pair of opposed end plates 16, 16 and a pair of opposed side plates 17, 17 using a relatively thin metal plate member. It is formed in a box shape.

  The instrument body 11 has an opening 18 on the lower side, and reflector plate mounting plates 19, 19 that are horizontally bridged to the side plates 17, 17 are mounted at two locations in the longitudinal direction. The reflector mounting plates 19 and 19 have rotation clamps 20 and 20, respectively.

  The instrument body 11 is formed with bent portions (see FIG. 5) 21 and 21 that are bent inwardly from the lower ends of the side plates 17 and 17 and the ends thereof are directed upward at the edges of the opening 18. is doing.

  The pair of sockets 12 and 12 are attached to the pair of end plates 16 and 16 of the instrument body 11 so as to protrude downward. The sockets 12 and 12 are electrically connected to a terminal block (not shown) through, for example, an inverter-type ballast (see FIG. 4) 22 fixed to the back surface of the top plate 15 of the tool body 11 by a tool wiring (not shown). It is connected. Power supply wiring is electrically connected to the terminal block from the ceiling surface.

  The reflective shade 14 is formed in an inverted V shape having a length slightly shorter than the distance between the pair of sockets 12 and 12 using a metal plate member equivalent to the instrument body 11.

  The reflective shade 14 includes a central horizontal plate 23, a pair of first inclined plates 24, 24, a pair of side horizontal plates 25, 25, a pair of second inclined plates 26, 26, and a pair of end bent portions. Parts 27 and 27.

  The central horizontal plate 23 has a pair of clamp holes 28 and 28 through which the rotating clamps 20 and 20 of the reflector mounting plates 19 and 19 are inserted at two locations in the longitudinal direction. The clamp holes 28 are formed in an I shape along the longitudinal direction of the central horizontal plate 23.

  The first inclined plates 24, 24 are located below the central horizontal plate 23, and respectively extend obliquely downward at predetermined inclination angles from both longitudinal ends of the central horizontal plate 23. .

  The side horizontal plates 25, 25 extend horizontally from both end portions of the first inclined plates 24, 24, respectively. The side horizontal plates 25, 25 are formed with a plurality of ventilation holes 29 penetrating at equal intervals in the longitudinal direction thereof.

  The second inclined plates 26, 26 are located below the central horizontal plate 23, and extend obliquely downward at predetermined inclination angles from both longitudinal ends of the side horizontal plates 25, 25, respectively. I'm out. A plurality of vent holes 30 are formed in the second inclined plates 26, 26 at equal intervals in the longitudinal direction thereof.

  The end bent portions 27, 27 are bent into a V shape at the distal end portions of the second inclined plates 26, 26.

  Next, the details and assembly procedure of the lighting fixture 10 will be described.

  As shown in FIGS. 4 and 5, the distance L1 between the pair of bent portions 21 and 21 of the instrument body 11 is slightly larger than the width L2 of the central horizontal plate 23 of the reflective shade 14.

  In assembling, first, the reflective shade 14 is advanced from below the instrument body 11 while the central horizontal plate 23 of the reflective shade 14 is aligned between the pair of bent portions 21 and 21 of the instrument body 11.

  Then, the pair of clamp holes 28, 28 of the central horizontal plate 23 of the reflective shade 14 are aligned with the rotating clamps 20, 20 of the reflective plate mounting plates 19, 19.

  Thereby, the central horizontal plate 23 of the reflective shade 14 is inserted between the pair of bent portions 21 and 21 of the instrument main body 11.

  At this time, since the rotary clamps 20 and 20 are positioned in the longitudinal direction of the central horizontal plate 23 that is in the same direction as the clamp holes 28 and 28, the clamp holes 28 and 28 are inserted into the rotary clamps 20 and 20. Is done.

  As shown in FIGS. 6 and 7, the central horizontal plate 23 of the reflective shade 14 is inserted between the pair of bent portions 21 and 21 of the instrument body 11, and the clamp holes 28 and 28 are formed in the rotary clamps 20 and 20. The central horizontal plate 23 of the reflective shade 14 comes into contact with the reflective plate mounting plates 19, 19.

  Therefore, the rotation clamps 20 and 20 are locked to the central horizontal plate 23 outside the clamp holes 28 and 28 by rotating the rotation clamps 20 and 20 by approximately 90 degrees.

  As a result, the reflecting shade 14 is brought into contact with the reflector mounting plates 19 and 19 with the central horizontal plate 23 inserted between the bent portions 21 and 21, and is attached to the instrument body 11. Fixed.

  Such a lighting apparatus 10 is used by being suspended from a ceiling in a work room in which a machine tool or the like is placed.

  In the lighting device 10, the oil mist scattered from the machine tool during long-term use has the plates 15, 16, 16, 17, 17 of the device body 11 and the plates 24, 24, 25, 25, 26 of the reflector 14. , 26 adhere to the surface.

  Oil mist adhering to the surface of each plate 15, 16, 16, 17, 17 of the instrument body 11 gathers into oil droplets and drops onto the edge of the opening 18.

  The oil mist dropped on the edge of the opening 18 of the instrument main body 11 has bent portions 21 and 21 bent at the edge of the opening 18 so that the end thereof is directed inward. It does not go into the instrument main body 11 from the edge of the opening 18 and does not go around the central horizontal plate 23 of the reflecting shade 14.

  On the other hand, the oil mist adhering to the surface of each plate 24, 24, 25, 25, 26, 26 of the reflecting shade 14 gathers into oil droplets, and the first inclined plates 24, 24, the side horizontal plates 25, 25, and then spontaneously drops onto the second inclined plates 26 and 26 sequentially.

  The oil mist that has been spontaneously dropped onto the first inclined plates 24, 24, the side horizontal plates 25, 25, and the second inclined plates 26, 26 is finally stored in the end bent portions 27, 27.

  At this time, since the central horizontal plate 23 is disposed above the first inclined plates 24, 24 and the second inclined plates 26, 26, the oil mist does not travel toward the central horizontal plate 23, It does not go into the instrument body 11.

As described above, in the lighting fixture 10 according to the embodiment of the present invention, the reflecting shade 14 has the central horizontal plate 23 located on the inner side of the edge of the opening 18 of the fixture body 11 and the end is upward. Is inserted into the bent portions 21, 21 bent so as to face, and fixed to the instrument body 11.
As a result, the oil mist adhering to the surface of the instrument main body 11 and dripping into the opening 18 does not enter the instrument main body 11 from the edge of the opening 18 by the bent portions 21, 21, and the horizontal center of the reflective shade 14 It does not go around the board 23 either.
Therefore, harmful dust such as oil mist adhering to the instrument body 11 can be prevented from entering the instrument body 11.

In the lighting fixture 10 of one embodiment of the present invention, the reflective shade 14 has the first inclined plates 24 and 24 and the second inclined portions below the central horizontal plate 23 inserted into the edge of the opening 18 of the fixture body 11. Plates 26 and 26 are provided.
Thereby, the oil mist dropped on the reflecting shade 14 is naturally dropped through the first inclined plates 24 and 24 and the second inclined plates 26 and 26 below the central horizontal plate 23 of the reflecting shade 14.
Therefore, harmful dust such as oil mist adhering to the reflective shade 14 can be prevented from entering the instrument main body 11.

  In addition, the instrument main body 11, the socket 12, the fluorescent lamp 13, etc. which were used in the said embodiment are not limited to what was illustrated, and can be changed suitably.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Appliance main body 13 Fluorescent lamp (light source)
14 Reflecting shade 18 Opening 21 Bent

Claims (2)

A light source;
An instrument body which is formed in a long box shape having an opening below and holds the light source;
A reflective shade attached to the opening of the instrument body;
In the lighting fixture with
The instrument body has a bent portion bent at the edge of the opening inward and with its end facing upward, and the upper end of the reflective shade is inserted into the bent portion. The lighting fixture characterized by fixing the said reflective shade in the state made to do.   The lighting fixture according to claim 1, wherein the reflective shade is inclined at least below the upper end portion inserted into an edge portion of the opening of the fixture body.

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