JPH0754643B2 - Surface lighting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a surface lighting device in which a light source can be replaced easily and easily.

[Conventional technology]

FIG. 5 shows a conventional surface illumination device disclosed in, for example, Japanese Patent Laid-Open No. 60-98406, and FIG. 6 is a perspective view of the device after assembly.

In the figure, reference numeral 21 denotes a light guide light emitting plate in which optical fibers are arranged flatly,
Reference numeral 22 denotes a housing having an opening 23 at a side end in the length direction (horizontal direction), and 24 denotes a support frame for the light guide light emitting plate 21. The frame 24 is composed of a pair of support pieces that are erected on the upper surface of the housing 22, and a slit-shaped opening communicating with the inside of the housing is provided between the support pieces. The light guide light emitting plate 21 is fixed to the housing 22 by inserting its lower end portion between the support pieces. Reference numeral 25 denotes a light source, which is mounted on the base portion 26.

The light source 25, by inserting the distal end portion thereof into the housing 22 through the opening portion 23 and fitting the base portion 26 into the opening portion 23,
It is attached to the same housing 22. When installed,
The lower end surface 21a of the light guide / light emitting plate 21 and the light source 25 are located close to each other.

[Problems to be Solved by the Invention]

However, in the conventional surface lighting device, the light source 25 is mounted on the housing 22.
Insert it from the length direction (left and right direction) into the base part 26
Since it is configured to fit into the opening 23 of the housing 22,
There were the following problems.

That is, depending on the structure of the building, the arrangement of cabinets, or the mounting position and mounting method of the housing 22, the total length of the light source 25 and the base portion 26 on the side of the opening 23 of the housing 22 is equivalent. There is a case where the light source 25 cannot be replaced because the space of is not available. For example, when the housing 22 is mounted on the ceiling and the beam or wall or cabinets are placed on the side of the opening 23 (left or right) of the housing 22 and the space cannot be secured, the light source 25 cannot be replaced. It will be.

Further, for example, even if the light guide light-emitting plate 21 shown in FIG. 5 has a structure in which a cylindrical reflecting plate surrounding the light source 25 is attached, when the light source 25 is attached, the opening of the housing 22 is still formed. The above-mentioned problem is unavoidable, since it has to be inserted into the tubular reflector from the portions 23 (left and right).

The present invention has been made to solve such a conventional problem, and a light source can be easily and easily replaced without being affected by the structure of a building, the position of cabinets, the mounting position, or the mounting method. It is an object to obtain a ceiling-embedded surface lighting device that can be used.

[Means for Solving the Problems]

The surface lighting device according to the present invention includes a housing having an opening on the front side, a lid that covers the opening and is detachably attached to the housing from the front side, a light source mounted in the housing, and one end surface serving as a light source. Before enclosing the light source in a state where the light guide light emitting plate that is brought close to and raised in the vertical direction is attached to the housing, and the lid and the light guide light emitting plate are respectively attached and the lid is attached to the housing. It is provided with a partial reflector and a rear reflector.

[Action]

In the present invention, when the lid is removed from the housing, the light source is exposed in the opening of the housing because the front reflector attached to the lid is separated from the rear reflector attached to the light guide reflector. The light source can be replaced from the front side of the body through the opening. Therefore, when the surface lighting device of the present invention is installed on a ceiling or the like, the light source can be replaced by providing at least a space corresponding to the width of the light source on the lid side (front side) of the housing.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 is a housing attached to the ceiling or the like at the upper wall portion 1a, and has an opening 2 on the front side. Reference numeral 3 denotes a light guide light emitting plate, which is attached to a rising portion 4 of a lower wall portion of the housing 1 in a hanging state by a screw 5. Reference numeral 6 is a light source mounted in the housing 1, and 7 is a rear reflector which covers the rear side of the light source 6, and is provided integrally with the rising portion 4 of the housing 1. 9
Is a hooking groove provided in the housing 1, and is a hooking piece 12 of the housing 10 described later.
To lock the housing 10 and attach the housing 10 to the housing 1.

Reference numeral 10 is a lid that covers the opening 2 of the housing 1, 11 is a front reflector that is integrally provided on the lid 10, and 12 is a hooking piece that is provided on the lid 10. Have The lid 10 can be attached to the housing 1 by hooking the hooking piece 12 in the hooking groove 9 provided in the housing 1. Case 1 of lid 10
The front reflector 11 provided on the former 10
The rear reflector 7 provided on the latter 1 and the rear 1 constitutes a cylindrical reflector that is abutted against and surrounds the light source 6.

Next, the procedure for replacing the light source 6 will be described with reference to FIGS. 1, 3, and 4.

As shown in FIG. 1, the light source 6 of the device in use is turned off, and then the lid 10 is slightly lifted up and pulled forward as shown in FIG. The light source 6 is exposed in the opening 2 away from the plate 7. Therefore, the light source 6
As shown in FIG. 4, it can be replaced with a new one by inserting and removing it from the opening 2 of the housing 1.

〔The invention's effect〕

As described above, according to the surface lighting device of the present invention, the reflector surrounding the light source is divided into front and rear, the front one is attached to the lid body, and the rear one is attached to the housing side.
Since the light source can be replaced from the front side of the housing, the light source can be easily and easily replaced without being affected by the structure of buildings, the layout of cabinets, the mounting position or mounting method of devices. To be

[Brief description of drawings]

FIG. 1 is a sectional view showing a surface lighting device according to an embodiment of the present invention, FIG. 2 is an external perspective view of the embodiment, and FIGS. 3 and 4 show operations of light source replacement of the surface lighting device of the embodiment. Cross section,
FIG. 5 is an exploded perspective view of a conventional surface lighting device, and FIG. 6 is an external perspective view showing the conventional surface lighting device. Reference numeral 1 is a housing, 3 is a light guide light emitting plate, 6 is a light source, 7 is a rear reflector, 10 is a housing, and 11 is a front reflector. In the drawings, the same reference numerals indicate the same or corresponding parts.

Front page continuation (72) Inventor Akira Saiki 4-1-1-13 Honmachi, Chuo-ku, Osaka City, Osaka Prefecture Takenaka Corporation Ltd. (72) Haruki Kaku, 4-1-1-13 Honmachi, Chuo-ku, Osaka City, Osaka Stocks Takenaka Corporation (72) Inventor Hitoshi Ishikawa 5-1-1, Ofuna, Kamakura-shi, Kanagawa Mitsubishi Electric Lighting Co., Ltd. (72) Makoto Abe 5-1-1, Ofuna, Kamakura, Kanagawa Mitsubishi Electric Lighting Co., Ltd. In-house (72) Inventor Teruaki Takeda 5-1-1 Ofuna, Kamakura-shi, Kanagawa Mitsubishi Electric Lighting Co., Ltd.

Claims (1)

[Claims] 1. A housing having an opening on the front side, a lid which covers the opening and is removably attached to the housing from the front side, a light source mounted in the housing, and one end face of which is close to the light source, and A light guide light emitting plate which is vertically raised and attached to the housing; a front reflector which is attached to the lid and the light guiding light emitting plate and surrounds the light source when the lid is attached to the housing. A surface lighting device comprising a rear reflector.