JPH09180525A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress increase in cost and prevent the generation of a gap between an installing plate and a luminaire main body by warping the central part of a plane reflecting plate upward from the ends in the length direction, and installing the reflecting plate to the luminaire main body in the vicinity of both ends in the length direction. SOLUTION: A reflecting plate 10 is warped upward from both ends in the length direction toward the center, and two pairs of cut-out parts 11, 12 for fixing a socket are formed at both ends in the length direction. The reflecting plate 10 is installed to a luminaire main body 1 in such a way that the reflecting plate 10 is brought into contact with an installing part so as to face the warped central part upward, both ends are pushed up so that the reflecting plate 10 becomes almost flat, then fixing screws 15 are screwed in the installing part through screw holes 13, 14 for fixing. Since the central part of the reflecting plate 10 is previously warped upward, generation of gap between the luminaire main body 1 and the reflecting plate 10 caused by warping downward of the central part after installing can be prevented. Since forming or ribs in the reflecting plate 10 is made unnecessary, cost can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device suitable for a ceiling-embedded lower surface opening device.

[0002]

2. Description of the Related Art Conventionally, fluorescent lighting equipment has been used as lighting equipment in offices and the like because of its high luminous efficiency and long life. Such a fluorescent lamp fixture is installed using an embedded lower surface opening fixture embedded in the ceiling board. The embedded lower surface opening device has a U-shaped cross section, and is embedded in the ceiling so that the opened lower surface is substantially flush with the ceiling board.

A pair of sockets are provided at both longitudinal ends of the embedded lower surface opening device, and a fluorescent lamp is attached to the sockets. Further, in order to effectively use the light from the fluorescent lamp as illumination light, a reflector having a trapezoidal cross section is attached between the embedded lower surface opening device and the fluorescent lamp. The light emitted from the fluorescent lamp to the side of the embedded lower surface opening device is reflected downward by the reflector to improve the lighting efficiency in the office.

However, since the embedded lower surface opening device and the reflector are separate parts, the price becomes high. Therefore, a device having a trapezoidal sectional shape of the instrument body and also having the inclined portion as a reflector has been developed. In this case,
By attaching the flat plate-shaped reflector to the flat mounting portion between the rear surface of the instrument body and the fluorescent lamp, the same effect as in the case of using the trapezoidal reflector can be obtained. That is, the price can be reduced by using a flat plate as the reflection plate.

By the way, such a reflection plate is generally screwed at two positions in the vicinity of both ends in the longitudinal direction in consideration of easiness of mounting work. However, since the reflector is flat, it does not have sufficient strength, and the center of the reflector is lowered by its own weight, and a gap is created between the instrument body and the reflector.

In order to prevent such warpage of the reflection plate, it is necessary to provide ribs on the reflection plate or to perform bending in two or more steps along the lengthwise direction of the reflection plate, resulting in high cost. Will end up.

[0007]

As described above, conventionally, when a flat plate-like reflector is used, there is a problem that a gap is created between the instrument body and the reflector, and the warpage of the reflector is prevented. In order to do so, there was a problem that the price would rise.

It is an object of the present invention to provide a lighting fixture which can prevent a gap from being formed between the reflector and the fixture body while suppressing an increase in price.

[0009]

According to a first aspect of the present invention, there is provided a luminaire main body for accommodating an illuminating lamp, the lower surface of which is open and the side surface along the longitudinal direction is inclined as a reflecting surface. A flat plate-like reflector having a shape that curves upward from the end in the longitudinal direction toward the center, and is attached between the back surface of the instrument body and the illuminating lamp in the vicinity of both ends in the longitudinal direction by predetermined attachment members. And is equipped with
According to a second aspect of the present invention, there is provided an apparatus main body having a lower surface which is an open surface and a side surface along the longitudinal direction inclined as a reflecting surface for accommodating an illuminating lamp, and a central portion extending from a width direction end portion. And a flat reflecting plate that is attached upward by a predetermined attaching member in the vicinity of both ends in the longitudinal direction between the back surface of the fixture body and the illuminating lamp. According to a third aspect of the invention, there is provided a luminaire main body for accommodating an illuminating lamp, the lower surface of which is open and the side surfaces along the longitudinal direction of the luminaire are inclined as reflection surfaces. It has a shape that curves upward and curves upward from the center toward the end in the width direction, and is mounted between the back surface of the instrument body and the illuminating lamp in the vicinity of both ends in the longitudinal direction by predetermined mounting members. Flat reflection It is those provided with the door.

In the first aspect of the present invention, the central portion of the reflector plate is curved upward from the longitudinal end portions, and even when it is attached to the instrument body near both longitudinal end portions, the central portion is the instrument body. Completely adhere to.

According to a second aspect of the present invention, the reflector has a widthwise end portion curved upward from the central portion, and even when the reflection plate is attached to the equipment body near both longitudinal end portions, the widthwise end portion is also attached to the equipment. Fully adhere to the body.

In the third aspect of the present invention, the reflection plate is curved upward in the central portion than in the longitudinal end portion and curved upward in the widthwise end portion from the central portion. Even when it is attached to the instrument body in the vicinity of both ends in the longitudinal direction, the central portion and the end portions in the width direction are completely in close contact with the instrument body.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a lighting fixture according to the present invention.

The device body 1 has an open surface 2 on the lower surface and a back surface 3 on the lower surface.
It is wider in the width direction, and the cross-sectional shape cut in the width direction is substantially trapezoidal. Both sides 4, along the longitudinal direction of the instrument body 1,
The reference numeral 5 is provided so as to be inclined, and also functions as a reflection plate. Both sides 6, 7 along the width direction of the instrument body 1
Is trapezoidal.

The instrument main body 1 is mounted by being embedded in the ceiling so that the open surface 2 is substantially flush with a ceiling board (not shown). An edge 8 is formed on the open surface 2 of the instrument body 1. A flat mounting portion (not shown) is provided on the rear surface 3 side of the instrument body 1. A ballast, a power supply terminal block, etc., not shown, are attached to the back surface 3, and not shown at both ends in the longitudinal direction of the attachment portion.
A pair of sockets is provided. Two fluorescent lamps (not shown) are attached to these sockets.

The reflection plate 10 has a shape and size that can be attached to the attachment portion of the instrument body 1, and has notches 11 and 12 for attaching two pairs of sockets at both ends in the longitudinal direction. Further, screw holes 13 and 14 for screwing are formed near the notches 11 and 12 at both ends, respectively.

In the present embodiment, the reflector 10 is curved upward from both ends in the longitudinal direction toward the center. When the reflector body 10 is attached to the attachment portion of the instrument body 1, the central portion in the longitudinal direction is attached. It has a shape that makes it easy to adhere to the part.

In the embodiment configured as described above, the reflector 10 is attached to the instrument body 1 with the central portion thereof curved upward. That is, the central portion of the reflection plate 10 is brought into contact with the flat mounting portion, and both ends of the reflection plate 10 are pushed up to make the reflection plate 10 substantially flat. In this state, the mounting screw 15 is screwed into the mounting portion through the screw holes 13 and 14,
The reflector 10 is fixed to the instrument body 1. Since the central portion of the reflector 10 is curved upward in advance, the central portion does not bend downward due to its own weight.

As described above, in the present embodiment, since the central portion of the reflecting plate is curved upward, it is possible to prevent the central portion of the reflecting plate from being warped downward after the reflecting plate is attached. It is possible to prevent a gap from being formed between the instrument body and the reflection plate.

Since it is not necessary to perform rib processing or bending processing of two or more steps on the reflecting plate, the reflecting plate can be constructed at low cost.

2 and 3 show a lighting apparatus according to another embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a sectional view taken along the line AA of FIG. It is a figure. 2 and 3, the same components as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.

In the embodiment of FIG. 1, a reflecting plate curved only in the longitudinal direction is adopted, but this embodiment is an example using a reflecting plate curved in both the longitudinal direction and the width direction.

2 and 3, the instrument main body 1 having a substantially trapezoidal cross section has a reflector 20 from the opening of the open surface 2.
Attach. The instrument body 1 is provided with a flat mounting portion 21 shown by a broken line on the back surface 3 side, and a ballast 22 and a power supply terminal block 23 are mounted on the back surface 3 between the mounting portion 21 and the ballast 22. Further, the mounting portion 21 is provided with two pairs of sockets 24 for mounting a fluorescent lamp (not shown).

In the present embodiment, as shown in FIG. 2, the reflection plate 20 is curved upward in the longitudinal direction from the end to the center. On the other hand, in the width direction, as shown in FIG. 3, it is curved downward from the end to the center.

In the embodiment configured as described above, the reflection plate 20 is attached to the attachment portion 21 of the instrument body 1 from the open surface 2 side. That is, the central portion of the reflection plate 20 in the longitudinal direction is brought into contact with the mounting portion 21, and both end sides are pushed upward to make a substantially flat state. In this state, the mounting screw 15 is screwed into the mounting portion 21 via the screw holes 13 and 14, and the reflection plate 20 is fixed to the mounting portion 21.

On the other hand, since both ends of the reflection plate 20 in the width direction are curved upward from the central portion, the reflection plate 20 is attached with the mounting screw 1
By fixing with 5, the both ends of the reflection plate 20 in the width direction are pressed against the mounting portion 21 and are further in close contact.

As described above, in the present embodiment, since the reflector is curved not only in the longitudinal direction but also in the width direction, when the reflector is fixed to the mounting portion, the central portion and the end portion are fixed to the mounting portion. Securely adhere. Also in this embodiment, the cost of the reflector can be suppressed.

[0028]

As described above, according to the present invention, it is possible to prevent a gap from being formed between the reflection plate and the instrument body while suppressing the price increase.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a lighting fixture according to the present invention.

FIG. 2 is a side view showing another embodiment of the present invention.

FIG. 3 is an explanatory view cut along the line AA in FIG.

[Explanation of Codes] 1 ... Instrument body 2 ... Opening surface 3 ... Rear surface 4, 5 ... Side surface 10 ... Reflector 14 Screw hole

Claims (3)

[Claims] 1. An instrument main body, which has an open lower surface and a side surface along the longitudinal direction which is inclined as a reflecting surface for accommodating an illuminating lamp; and a shape curved upward from an end portion in the longitudinal direction toward a central portion. And a flat plate-shaped reflector attached by a predetermined attachment member in the vicinity of both ends in the longitudinal direction between the back surface of the fixture body and the illumination lamp. 2. An instrument main body, which has an open lower surface and a side surface along the longitudinal direction which is inclined as a reflecting surface for accommodating an illuminating lamp; and a shape curved upward from a central portion toward an end in the width direction. And a flat plate-shaped reflector attached by a predetermined attachment member in the vicinity of both ends in the longitudinal direction between the back surface of the fixture body and the illumination lamp. 3. An instrument main body, which has an open lower surface and a side surface along the longitudinal direction which is inclined as a reflecting surface for accommodating an illuminating lamp; curved upward from a longitudinal end toward a central portion, and central. A plate-like reflector plate having a shape that is curved upward from the portion toward the end in the width direction, and is attached between the back surface of the instrument body and the illuminating lamp by predetermined attachment members in the vicinity of both ends in the longitudinal direction. A luminaire characterized by comprising: