JP4748097B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture attached to a construction material such as a wall or a ceiling.

  Conventionally, there has been a lighting fixture A 'attached to a wall surface 36 as shown in FIG. This luminaire A ′ includes a vertically long, substantially box-shaped fixture body 31 that houses electronic components (not shown) such as a ballast inside, and on the front side of the fixture body 31 (on the opposite side to the wall surface 36). A lamp socket 33 is attached so that the lamp shaft is obliquely downward, and a fluorescent lamp 34 is attached to the lamp socket 33. In addition, a translucent cover 32 that transmits light emitted from the fluorescent lamp 34 is disposed on the front side of the fluorescent lamp 34 so as to cover the fluorescent lamp 34. The translucent cover 32 has a cover body 32a having a translucent shape that is substantially U-shaped in cross-section and covers the three directions of the front surface (reflection surface) and both side surfaces of the instrument body 31 with the upper and lower surfaces opened. Bending pieces 32b extending inward are formed integrally on the front end sides of the two opposing surfaces of the cover main body 32a, and are attached to the front side of the instrument main body 31 using the mounting screws 35. .

  An embedded lighting fixture having a plurality of openings has also been proposed (see, for example, Patent Document 1). This luminaire includes a light source body, a display body that is formed integrally with the light source body and displays a desired display, and a lighting device body that houses a ballast, an inverter, and the like for supplying power to the light source body. A gap is provided between the lighting device body and the display body. An opening is provided on the lower surface of the gap, and a plurality of openings are also provided in a portion that protrudes toward the gap in the lighting device body. This lighting fixture is embedded and disposed through an embedding hole provided in the wall surface with the gap portion exposed to the surface side of the wall surface.

In this lighting fixture, when the light source body is turned on, the internal temperature of the lighting device body rises due to the heat generated from the ballast and the inverter. By forming a heat dissipation path with the opening, air convection occurs, external low-temperature air is taken in from the opening of the gap, and the internal temperature of the lighting device body decreases.
Japanese Utility Model Laid-Open No. 5-234407 (paragraph [0009] -paragraph [0011] and FIGS. 1 to 2)

  In the former lighting fixture A ′ described above, in order to ensure the operation-guaranteed temperature of the electronic component, the upper and lower surfaces of the translucent cover 32 are released to dissipate heat generated by the fluorescent lamp 34 and the electronic component. The light emitted from the fluorescent lamp 34 is reflected on the wall surface from these openings, and the desired light distribution may not be obtained.

  In the latter lighting fixture, heat dissipation can be ensured by providing an opening, but the light emitted from the light source body may leak out from the opening, and the display on the display body may become unclear. .

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting fixture that ensures heat dissipation and suppresses light leakage.

  The invention according to claim 1 is attached to the instrument body so as to cover the lamp and the instrument body, the instrument body being attached to the construction material, housing the electronic component therein and having the lamp disposed on the opposite side of the construction material. Open to both ends of the instrument body in the direction along the construction material, and a ventilation hole for allowing air to pass between the inside and outside of the instrument body, opposite to both ends of the instrument body Each of the light shielding plates has a through hole at a position that does not overlap with the vent hole in the direction in which the two light shielding plates are arranged.

  According to the invention of claim 1, by providing a vent hole at both ends of the instrument body in the direction along the construction material and providing a through hole in the light shielding plate, a heat dissipation path for releasing the heat inside the instrument body to the outside is provided. Since it is formed, there is an effect that heat generated in the lamp and electronic parts can be radiated to the outside. In addition, by providing a through hole at a position that does not overlap with the ventilation hole in the direction in which the two light shielding plates are arranged, light leaked from the ventilation hole is shielded by the light shielding plate, so that light leakage to the outside can be suppressed. effective.

  An embodiment of the present invention will be described with reference to FIGS. The luminaire A according to the present invention is attached to a wall surface such as a corridor or a staircase and used as a guide light.

  A lighting fixture A according to the present invention includes a vertically long, substantially box-shaped fixture main body 1 attached to a wall surface 20, a lamp socket 3 disposed on the front side of the fixture main body 1 (left side in FIG. 1A), A fluorescent lamp 4 that is detachably attached to the lamp socket 3, a translucent cover 2 that is attached to the instrument main body 1 so as to cover the fluorescent lamp 4 and the instrument main body 1, and for attaching the translucent cover 2 to the instrument main body 1. And a mounting plate 6.

  As shown in FIG. 1A, the instrument main body 1 has a vertically long side-view substantially L-shaped body 11, and a plurality (for supplying power to the fluorescent lamp 4 during a power failure is provided inside the body 11. In FIG. 1A, four rechargeable batteries 9 are attached using a holding metal fitting 10, and electronic parts such as a ballast and a terminal block (not shown) are accommodated. Further, a fixing portion 15 for fixing the cover 13 is attached to the body 11, and a substantially U-shaped support base 12 having an open bottom surface is attached to the bottom surface 11 a of the body 11.

  On the front side of the body 11 (left side in FIG. 1A), a vertically long substantially box-shaped cover 13 having an open rear side is attached. As shown in FIG. 1B, the cover 13 is formed with a reflection surface 13a for reflecting light from the fluorescent lamp 4 on the front side, and at a substantially central position on one end side in the longitudinal direction of the reflection surface 13a, A vertically long notch 13e for arranging the lamp socket 3 is provided. Further, an insertion hole 13g through which a fixing screw 17 for attaching the cover 13 to the body 11 is inserted is provided at a lower position of the notch 13e on the reflection surface 13a. Side portions 13b protrude from both ends of the reflecting surface 13a in the width direction toward the wall surface 20, and inclined surfaces 13d that incline toward the wall surface 20 are formed at corners formed by the reflecting surface 13a and the side portions 13b. Each is provided. Further, a horizontally long and substantially rectangular opening (vent hole) 13 f is provided on the upper surface 13 c of the cover 13. The cover 13 is attached to the body 11 by being fixed using a fixing screw 17 at one end side (left side in FIG. 1A) of the fixing portion 15 of the body 11. In the state where the cover 13 is attached to the body 11, a gap 14 is formed between the bottom surface 11 a of the body 11 and the inner side surface of the cover 13, and a lower vent is formed from the gap 14.

  A base 8 for attaching the instrument body 1 to the wall surface 20 is attached to the rear side of the body 11 (right side in FIG. 1A). The base 8 has a base body 8a that is substantially L-shaped when viewed from the side, and an opening 8c is provided on the lower surface of the base body 8a. A mounting portion 8b for mounting the mounting plate 6 is integrally provided on the upper edge of the base body 8a. The opening 8c is provided at a position that does not overlap the gap 14 in the longitudinal direction of the instrument body 1, and light from the fluorescent lamp 4 leaking from the gap 14 is shielded by the lower surface of the base body 8a. Can suppress light leakage. Here, a light shielding plate is formed from the lower surface of the base body 8a, and a through hole is formed from the opening 8c.

  As shown in FIG. 1C, the mounting plate 6 is a horizontally long substantially rectangular plate, and has a substantially square shape through which a fixing screw 19 for mounting the mounting plate 6 to the base 8 is inserted at one end in the width direction. An insertion hole 6a is provided, and a plurality of through holes 6b are provided around the insertion hole 6a. Further, an attachment piece 7 for attaching the attachment plate 6 to the translucent cover 2 is provided on the back side of the attachment plate 6. The through hole 6b is provided at a position that does not overlap with the opening 13f provided on the upper surface 13c of the cover 13 in the longitudinal direction of the instrument body 1, and light from the fluorescent lamp 4 leaking from the opening 13f is attached to the mounting plate 6. Therefore, light leakage to the outside can be suppressed. Here, a light shielding plate is formed from the mounting plate 6.

  The lamp socket 3 has a substantially cylindrical main body 3a, and is screwed to an attachment piece 5 extending from the body 11 on one end side of the main body 3a. A socket 3b into which the base 4b of the fluorescent lamp 4 is screwed is provided on the other end side of the main body 3a.

  The fluorescent lamp 4 is a light bulb type fluorescent lamp having a substantially spiral arc tube 4a. A cap 4b is provided on the opposite side of the arc tube 4a, and the cap 4b is screwed into the socket portion 3b so that the fluorescent lamp 4 is formed. While being held in the lamp socket 3, power is supplied from a lighting circuit (not shown) through the lamp socket 3.

  The translucent cover 2 is formed in a substantially box shape with one surface (the right side surface in FIG. 1A) opened by, for example, a resin material having translucency, and a mounting plate as shown in FIG. The mounting plate 6 is attached to the translucent cover 2 by screwing the fixing screw 18 with a part of the upper surface of the translucent cover 2 being sandwiched between the mounting piece 7 and the mounting piece 7. Then, when the fixing screw 19 is inserted through the insertion hole 6a of the mounting plate 6 and screwed into the mounting portion 8c of the base 8 with the lower surface of the translucent cover 2 placed on the lower surface of the base 8, as shown in FIG. The translucent cover 2 is attached to the fixture body 1, and the lighting fixture A is attached to the wall surface 20.

  Here, operation | movement of the lighting fixture A is demonstrated based on FIG. When the fluorescent lamp 4 is turned on, heat is generated from the electronic components and the fluorescent lamp 4 and the internal temperature of the appliance body 1 is increased. However, by forming the heat dissipation path B, air convection occurs, and the lower side of the base 8 External low temperature air is taken in from the opening 8c, and the internal temperature of the instrument body 1 is lowered by this low temperature air. Therefore, it is possible to ensure the guaranteed operating temperature of the electronic components such as the ballast and the rechargeable battery 9 housed in the appliance body 1.

  In the present embodiment, the case where the lower surface of the base main body 8a for attaching the translucent cover 2 to the instrument main body 1 and the mounting plate 6 are used as the light shielding plate has been described as an example, but the light shielding plate is limited to this embodiment. For example, a light-transmitting cover may be fixed on the side surface of the instrument body, and a light shielding plate may be provided separately from the vent hole.

(A) is sectional drawing of the lighting fixture of this embodiment, (b) is a perspective view of the cover used for the above, (c) is a perspective view of the mounting plate used for the same. It is a perspective view same as the above. It is explanatory drawing explaining operation | movement same as the above. It is a perspective view of the lighting fixture which shows a prior art example.

Explanation of symbols

1 Instrument body 2 Translucent cover 4 Fluorescent lamp 6 Mounting plate (light shielding plate)
6b Through hole 8 Base 8c Opening (through hole)
13f Opening (vent hole)
14 Clearance (vent hole)
20 Wall surface (construction material)
A lighting equipment

Claims (1)

  An instrument body that is attached to the construction material, houses electronic components inside and has a lamp disposed on the opposite side of the construction material, a translucent cover that is attached to the equipment body so as to cover the lamp and the instrument body, and construction Opening at both ends of the instrument body in the direction along the material, a vent hole for allowing air to pass between the inside and outside of the instrument body, and a light shielding disposed respectively facing the both ends of the instrument body And each light shielding plate has a through hole at a position that does not overlap the vent hole in the direction in which the two light shielding plates are arranged.

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