JP2009123503A - Ceiling version lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress temperature rise in a lighting fixture, as to one of ceiling mounting type with a gap against a ceiling face lessened. <P>SOLUTION: An exhaust fan 11 for forcibly exhausting air of a space 9 in a reflector plate with an inverter circuit 6 arranged out to a space 10 in a globe is mounted on a reflecting plate 5. Further, at a site other than the mounting site, a hole (a venthole 12) is provided for taking in air from the space 10 in the globe toward a side of the space 9 in the reflecting plate. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a ceiling-type lighting fixture attached to a ceiling surface.

  As shown in FIG. 2, a general ceiling-type lighting fixture includes a wiring fixture 2 attached to a rosette (not shown) installed on a ceiling surface 1 of a building. Moreover, the main body 3 of the lighting fixture is made of metal, and a holder 4 for holding the main body 3 is attached to the wiring fixture 2. The main body 3 is open at the center, and the wiring device 2 is passed through the opening, and the holder 4 is engaged with the wiring device 2 to fix the main body 3 facing the ceiling surface 1. I can do it.

  Further, a reflector 5 is fixed to the main body 3, and a space is formed between the main body 2 and the reflector 5. In this space, an inverter circuit 6 and wiring / switches (not shown) are housed, and are hidden from the outside by the reflector 5. A plurality of ring-shaped fluorescent lamps 7 are fixed to the main body 3 on the outside of the reflection plate 5. Further, a globe 8 that covers the fluorescent lamp 7 is attached to the main body 3. The globe 8 is configured to engage with an engaging portion provided on the outer peripheral portion of the main body 3 and is detachable.

  In such a luminaire, the inverter circuit section has the highest temperature, which increases the temperature of the entire fixture.

  Each electrical component used in the inverter circuit has a component life due to the ambient temperature. As a result, when the temperature around the inverter circuit portion (inside the reflector 5) increases, the life of the electrical component is shortened.

As a technique for suppressing the temperature rise in the inverter circuit portion of the lighting fixture, there are those described in Patent Document 1 and Patent Document 2. In Patent Document 1, a propeller fan that blows air toward the ceiling is provided at the inner diameter portion of the ring-type fluorescent lamp, and the wind of the fan is sent between the luminaire main body and the ceiling surface to send out the luminaire. A lighting fixture for cooling an inverter circuit portion fixed to a main body portion is shown. On the other hand, in Patent Document 2, a blower is provided between the luminaire main body and the ceiling surface, air is sucked in from the main body bottom side of the blower, air flows along the luminaire main body, and air is blown out from the main body side of the blower. Thus, a lighting fixture is shown in which the inverter circuit portion fixed to the lighting fixture main body is cooled.
JP 2002-124124 A Japanese Patent Laid-Open No. 2002-130186

  2. Description of the Related Art In recent years, thin lighting fixtures with a clean design that can reduce a gap between a ceiling surface and a lighting fixture main body have been provided on the market. In such lighting fixtures, the higher the output power, the higher the temperature of the inverter circuit section arranged inside, and the higher the temperature of the gap between the ceiling surface and the lighting fixture, the greater the effect on the inverter circuit component temperature. growing. Therefore, it is difficult to design lighting fixtures with higher output lighting.

  However, the technologies disclosed in Patent Documents 1 and 2 necessitate a space for securing an air passage or an installation space for the blower between the ceiling surface and the luminaire main body in measures against heat in the inverter circuit portion. It was difficult to reduce the thickness of the lighting fixture so that the design would be as good as possible.

  In addition, the lighting fixtures disclosed in Patent Documents 1 and 2 are configured to suck air from the outside and send wind to the lighting fixture main body, so that a suction port that allows insects to enter inside the lighting fixture is created. End up.

  When air is sucked in from the outside of the lighting fixture, naturally the temperature of the air outside the lighting fixture is low, so the effect of lowering the temperature is great, but there are fine dust in the air around the suction port when used for a long time Adheres. Therefore, there is a high possibility of soiling the lighting fixture.

  In view of the problems of the background art as described above, it is an object of the present invention to provide a lighting fixture that can suppress a temperature rise in the fixture in a ceiling-type lighting fixture designed to reduce a gap with a ceiling surface. And

  The ceiling-type lighting fixture of the present invention includes a main body provided to face the ceiling surface side, an inverter circuit fixed to the main body, and an illumination reflection fixed to the main body so as to cover the inverter circuit. A board and a glove provided to cover the illumination lamp and fixed to the main body. In such a ceiling-type lighting fixture, the air in the first space between the main body portion where the inverter circuit is arranged and the illumination reflector, and the air in the second space between the illumination reflector and the globe are provided. A cooling mechanism that circulates and cools the air temperature in the first space is provided.

  ADVANTAGE OF THE INVENTION According to this invention, in the ceiling type lighting fixture of the design which can reduce a clearance gap with a ceiling surface, the temperature rise in an fixture can be suppressed.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a cross-sectional view illustrating a configuration of a ceiling-type lighting fixture according to an embodiment of the present invention. In this figure, a wiring device 2 is attached to a rosette (not shown) installed on a ceiling surface 1 of a building. A holder 4 for fixing the main body 3 made of metal is attached to the wiring device 2. The central portion of the main body 3 is open. The main body 3 can be fixed to the ceiling surface 1 by passing the wiring device 2 through the opening and engaging the holder 4 with the wiring device 2.

  A reflecting plate 5 is fixed to the main body 3, and a space is formed between the main body 2 and the reflecting plate 5. In this space, an inverter circuit 6 and wiring / switches (not shown) are housed, and are hidden from the outside by the reflector 5. A plurality of ring-shaped fluorescent lamps 7 are fixed to the main body 3 on the outside of the reflection plate 5. Further, a globe 8 made of a translucent resin or the like covering the fluorescent lamp 7 is attached to the main body 3. The globe 8 is configured to engage with an engaging portion provided on the outer peripheral portion of the main body 3 and is detachable.

  As shown in FIG. 1, a reflection plate internal space (first space portion) 9 is formed between the main body 2 and the reflection plate 5. In addition, a glove internal space (second space) 10 is also formed between the main body to which the reflecting plate 5 is fixed and the globe 8. In this embodiment, an exhaust fan 11 for forcibly discharging the air in the reflector inner space 9 to the globe inner space 10 is attached to the reflector 5 and reflected from the globe inner space 10 at a part different from the attachment part. A hole (air vent 12) for taking air into the in-plate space 9 side is provided.

  With such a configuration, the air in the reflector inner space 9 and the globe inner space 10 can be forcibly circulated. As a result, since the inverter circuit 6 is arranged, the temperature of the reflector inner space 9 that is the highest temperature in the lighting fixture can be lowered. Therefore, a thin luminaire can be designed even in a high-power luminaire.

  Moreover, since the lighting fixture of a present Example circulates the air inside a lighting fixture, the hole which takes in air in the glove | globe 8 used as the exterior of a lighting fixture, the main-body part 2, etc. is not required. That is, there is no hole that allows insects to enter from the outside to the inside of the lighting fixture. Furthermore, since fine dust in the air does not adhere to the luminaire, it is less likely that the luminaire will become dirty after long-term use.

  In addition, since air is forcibly circulated in a closed space inside the lighting fixture, noise generated from a circulating air generator such as the fan 11 can be reduced.

  Although the embodiments of the present invention have been described with reference to the drawings, it is not limited to the illustrated structure and shape without departing from the technical idea of the present invention, and the above embodiments may be appropriately modified and implemented. Is possible.

It is a block diagram of the ceiling-type lighting fixture by one Example of this invention. It is a block diagram of the general ceiling type lighting fixture relevant to this invention, (a) is a plane perspective view, (b) is X-X 'sectional drawing of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling surface 2 Wiring fixture 3 Main part of lighting fixture 4 Holder 5 Reflector (illumination reflector)
6 Inverter circuit 7 Fluorescent lamp 8 Globe 9 Reflector internal space (first space)
10 Space inside the globe (second space)
11 Exhaust fan 12 Vent

Claims (2)

A main body provided to face the ceiling surface side, an inverter circuit fixed to the main body, an illumination reflector fixed to the main body so as to cover the inverter circuit, and an illumination lamp A glove fixed to the main body, and a ceiling-type lighting fixture comprising:
Circulating the air in the first space between the main body portion where the inverter circuit is arranged and the illumination reflector, and the air in the second space between the illumination reflector and the globe, The ceiling-type lighting fixture which has a cooling mechanism which cools the air temperature of a 1st space part.   The cooling mechanism includes a fan for exhausting the air in the first space portion to the second space portion, and the illumination reflection plate includes a fan from the second space portion to the first space portion. The ceiling-type lighting fixture according to claim 1, wherein a hole for taking in air is provided.

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