JPH0676617A - Fluorescent lamp apparatus - Google Patents

Abstract

PURPOSE:To set air convection favorable, and achieve a long life of a lamp in a fluorescent lamp apparatus of which reflection plate is embedded in a ceiling surface, and in which lamps and louvers are installed by providing ventila tion holes at positions in the reflection plate facing the louvers. CONSTITUTION:A reflection plate 10 opened in a lower surface and having an almost trapezoid-shaped cross sectional surface is embedded and disposed in a ceiling surface 11. Fluorescent lamps 12 are mounted in the opened lower surface of the reflection plate, and plural louvers 14 are disposed in a perpendicular direction to a length direction of the lamp 12 under it. Ventilation holes 15 are bored at positions in the reflection plate 10 facing the louvers 14 for composing a fluorescent lamp apparatus. Air around the louvers 14 thus makes convection favorably through the ventilation holes 15, temperature distribution to the length direction of the fluorescent lamps 12 becomes uniform, and blackening phenomenon of the fluorescent lamps 12 can be prevented, thereby a long life of the lamp 12 can be achieved without deteriorating light shielding function of the louver 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded bottom surface open type device having a louver on its lower surface, and more particularly to a fluorescent lamp device in which air convection near the louver is improved.

[0002]

2. Description of the Related Art Conventionally, an embedded bottom open type fluorescent lamp fixture is
For example, there is one shown in FIG. As shown in FIG. 5, the fixture body 2 is embedded in the ceiling 1, the fluorescent lamps 3 are mounted inside the fixture body 2 in the paired lamp sockets 4 and 4, and a plurality of fixture lamps are arranged side by side in the opening of the fixture body 2. Louver 5
Was mounted by the mounting frame 6.

[0003]

However, in the fluorescent lamp fixture shown in FIG. 5, convection above the louver 5 is delayed, heat exchange in the vicinity is reduced, and heat generated from the fluorescent lamp 3 is generated in the vicinity of the louver 5. Since the temperature stays around and increases in the vicinity of the louver 5, the temperature distribution in the longitudinal direction of the fluorescent lamp 3 varies, and as a result, the vicinity of the point A where the fluorescent lamp 3 is close to the louver 5 becomes black, There is a problem that the life of the fluorescent lamp 3 is shortened.

In order to solve this problem, the height of the louver 5 is lowered so that the heat generated from the fluorescent lamp 3 is removed.
A measure to prevent the louver 5 from staying in the vicinity may be considered, but in this case, a problem that the light-shielding function of the louver 5 is deteriorated newly occurs and the thickness of the instrument body 2 is increased.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fluorescent lamp apparatus in which the convection of air near the louver is improved without deteriorating the light-shielding function of the louver.

[0006]

In order to solve the above-mentioned problems, a fluorescent lamp apparatus according to a first aspect of the present invention is such that a reflecting plate having an open lower surface is embedded in a ceiling surface, and a lamp is provided on the open lower surface of the reflecting plate. In a fluorescent lamp fixture in which a plurality of louvers are arranged below the lamp in a direction orthogonal to the longitudinal direction of the lamp, a ventilation hole is formed at a position of a reflecting plate facing the louver.

Further, in the fluorescent lamp apparatus according to the second aspect of the present invention, a reflecting plate having an open lower surface is embedded in the ceiling surface, a lamp is mounted on the open lower surface of the reflecting plate, and a longitudinal direction is provided below the lamp. In a fluorescent lamp fixture in which a plurality of louvers are arranged in a direction orthogonal to each other, a ventilation hole is formed at a position of a reflector plate facing a point where the lamp is close to the louver.

Further, the fluorescent lamp apparatus according to a third aspect of the invention is a fluorescent lamp apparatus in which a reflecting plate having an open lower surface is embedded in a ceiling surface, and louvers combined in a lattice pattern are arranged on the open lower surface of the reflecting plate. A ventilation hole is formed at a position of the reflection plate facing the intersection of the louvers combined in the grid pattern.

[0009]

According to the first aspect of the present invention having the above-mentioned structure, since the ventilation hole is formed at the position of the reflecting plate facing the louver, the air near the louver is satisfactorily convected through the ventilation hole, and the air flows in the longitudinal direction of the lamp. Temperature distribution becomes uniform,
The blackening phenomenon of the lamp can be prevented.

Further, according to the second aspect of the present invention, since the ventilation hole is formed at the position of the reflection plate facing the lamp, the air in the reflection plate near the louver is well convected, and the ventilation hole is hidden by the lamp. Therefore, it is possible to prevent the deterioration of the appearance quality due to the ventilation holes.

Further, in the third aspect of the present invention, the ventilation hole is provided at the position of the reflecting plate facing the intersection of the louvers combined in a grid pattern, so that the air near the louver can be well convected. Can be made.

[0012]

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

FIG. 1 is an enlarged perspective view of essential parts showing a first embodiment of a fluorescent lamp fixture according to the present invention. As shown in FIG. 1, the fluorescent lamp fixture of the present embodiment has a reflector plate 10 whose bottom surface is open and whose cross section is substantially trapezoidal. This reflector plate 10 is embedded in the ceiling 11 surface, Lamp sockets 13 for mounting the fluorescent lamps 12 are attached to both ends of the open lower surface of the plate 10 in the longitudinal direction. Further, below the fluorescent lamp 12, a plurality of louvers (baffles) 14 are arranged in parallel so that their reflecting surfaces face each other so as to be orthogonal to the longitudinal direction.

Reflector 10 facing these louvers 13
Vent holes 15 are formed at the respective positions, and these vent holes 15 extend in the width direction of the reflection plate 10 and are elongated and cut and formed as shown in FIG.
5a is formed.

Next, the operation of this embodiment will be described.

In this embodiment, since the ventilation hole 15 is formed at the position of the reflecting plate 10 facing the louver 14, the air near the louver 14 is favorably convected through the ventilation hole 15 and the longitudinal direction of the fluorescent lamp 12. The temperature distribution with respect to is uniform, and the blackening phenomenon of the fluorescent lamp 12 can be prevented.

As described above, according to this embodiment, the ventilation hole 15
Since the concave portion 15a is formed by the cut-and-raised portion, it is possible to prevent the deterioration of the appearance quality and the reflection efficiency of the reflection plate 10 and to prevent the reduction of the strength of the reflection plate 10 as compared with the case where the ventilation hole is formed by a simple through hole. Can be increased.

FIG. 3 shows a second embodiment of the fluorescent lamp apparatus according to the present invention. The same parts as those of the first embodiment will be designated by the same reference numerals. In the second embodiment, a ventilation hole 16 extending along the longitudinal direction of the fluorescent lamp 12 is formed at the position of the reflector plate 10 facing the point A (similar to the position shown in FIG. 5) where the fluorescent lamp 12 is close to the louver 14. Has been done.

Therefore, according to this embodiment, the louver 1
The air inside the reflection plate 10 including the vicinity of 4 can satisfactorily convect through the ventilation holes 16. Further, since the ventilation hole 16 is provided along the longitudinal direction of the fluorescent lamp 12, the ventilation hole 1
6 is hidden by the fluorescent lamp 12, and even if the vent hole 16 is a through hole, the appearance quality is not deteriorated due to the perforation of the vent hole. The rest of the configuration and operation are the same as in the first embodiment, so a description thereof will be omitted.

FIG. 4 shows a third embodiment of the fluorescent lamp fixture according to the present invention. The same parts as those of the first embodiment will be designated by the same reference numerals. In this third embodiment, the louver 1
7 are combined in the shape of a square lattice, and ventilation holes 18 are formed at the positions of the reflection plate 10 facing the intersections of the louvers 17.

In this embodiment as well, as in the first embodiment, the air near the louver 17 can be favorably convected. The rest of the configuration and operation are the same as in the first embodiment, so a description thereof will be omitted.

The present invention is not limited to the above embodiments, but various modifications can be made. For example, the ventilation holes 15 and 16 of the first and second embodiments are long holes, and the ventilation hole 18 of the third embodiment is a circular hole. The shape and size of the ventilation holes 18 allow good convection of air. As long as it is possible to apply, it is possible to apply other than the above embodiments.

Further, in each of the above embodiments, the reflecting plate 10 is provided with the same size vent hole, but the fluorescent lamp 12
Since the temperature in the vicinity of the filament portion becomes particularly high, it is possible to form the ventilation hole only in the position of the reflection plate 10 located in the vicinity thereof, or it is desirable to form the ventilation hole slightly larger than the other ventilation holes.

[0024]

As described above, the present invention provides claim 1.
According to this, a reflecting plate having an open lower surface is embedded in a ceiling surface, a lamp is mounted on the open lower surface of the reflecting plate, and a plurality of louvers are provided below the lamp in a direction orthogonal to its longitudinal direction. In the placed fluorescent lamp fixture, a ventilation hole was drilled at the position of the reflector plate facing the louver, so the temperature distribution in the longitudinal direction of the lamp is uniform with the same thickness as the conventional fixture without degrading the light blocking function of the louver. Therefore, the blackening phenomenon of the lamp can be prevented and the life of the lamp can be extended.

According to a second aspect of the present invention, a reflecting plate having an open lower surface is embedded in the ceiling surface, and a lamp is mounted on the open lower surface of the reflecting plate. In a fluorescent lamp fixture in which a plurality of louvers are arranged in a direction orthogonal to each other, a ventilation hole is formed at a position of a reflector plate facing a point where the lamp is close to the louver. It has the effect of not hindering the appearance quality even if the ventilation hole is a through hole.

Further, according to a third aspect of the present invention, there is provided a fluorescent lamp fixture in which a reflecting plate having an open lower surface is embedded in a ceiling surface, and louvers combined in a lattice pattern are arranged on the open lower surface of the reflecting plate. Since the ventilation hole is formed at the position of the reflecting plate facing the intersection of the louvers combined in the lattice shape, the same effect as in claim 1 can be obtained even if the louvers are in the lattice shape.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view of an essential part showing a first embodiment of a fluorescent lamp fixture according to the present invention.

FIG. 2 is an enlarged cross-sectional view showing a ventilation hole of FIG.

FIG. 3 is an enlarged perspective view of essential parts showing a second embodiment of the fluorescent lamp fixture according to the present invention.

FIG. 4 is a perspective view of a main part showing a third embodiment of the fluorescent lamp fixture according to the present invention.

FIG. 5 is a schematic cross-sectional view showing an example of a conventional fluorescent lamp fixture.

[Explanation of symbols]

 10 Reflector 11 Ceiling 12 Fluorescent Lamp 13 Lamp Socket 14 Louver 15 Ventilation Hole 16 Ventilation Hole 17 Louver 18 Ventilation Hole

Claims (3)

[Claims] 1. A reflection plate having an open lower surface is embedded in a ceiling surface, a lamp is mounted on the open lower surface of the reflection plate, and a plurality of louvers are provided below the lamp in a direction orthogonal to its longitudinal direction. In the fluorescent lamp device having the above arrangement, a vent hole is formed at a position of the reflector plate facing the louver. 2. A reflecting plate having an open lower surface is embedded in a ceiling surface, a lamp is mounted on the open lower surface of the reflecting plate, and a plurality of louvers are provided below the lamp in a direction orthogonal to its longitudinal direction. In the fluorescent lamp apparatus in which the above-mentioned lamp is arranged, a ventilation hole is formed at a position of a reflecting plate facing the point where the lamp is close to the louver. 3. A fluorescent lamp fixture in which a reflecting plate having an open lower surface is embedded in a ceiling surface, and louvers combined in a grid pattern are arranged on the open lower surface of the reflecting plate. A fluorescent lamp fixture characterized in that a ventilation hole is formed at a position of a reflecting plate facing the intersection of the above.