JPH05282906A - Luminaire - Google Patents

Abstract

(57) [Abstract] [Purpose] Prevents deterioration of a fixture, which is attached to an object to be attached such as a pole, made of reinforced plastic, due to the thermal influence from the lamp of the fixture where almost the entire load of the fixture is applied. An object of the present invention is to provide a long-life road lighting device. [Structure] In a fixture made by attaching a globe to a reinforced plastic lamp body that contains a light source and a reflecting mirror,
The lamp body is composed of at least two housings which are divided into upper and lower parts, and a mounting portion for mounting to the mounted body is formed in the lower housing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to attachment of a lighting fixture used for lighting a road or the like to an attached object such as a pole.

[0002]

2. Description of the Related Art Conventional road lighting devices often have a structure in which lighting circuit parts such as a reflector and a ballast formed of an aluminum plate are housed inside a lamp body made of a material such as aluminum die cast. It was Recently, in order to reduce the weight and cost of the fixture, as shown in FIG. 4, a lamp body B composed of an upper casing B1 and a lower casing B2 is made of polyester resin, phenol resin, etc., glass fiber or carbon fiber. Molded with a reinforced plastics (hereinafter, referred to as FRP) made of a composite material with the above, the lamp L, the reflecting mirror M, the lighting circuit parts E, etc. are housed inside the upper housing B1, and the lower housing B2. The underside of which is covered with a glove G has been developed and started to be used. The attachment of this device to the pole P is carried out by fixing a pinch screw N between a fixing column R and a reinforcing column H in which the tip of the pole P is erected from the wall surface of the upper housing B1. There is.

However, in such an apparatus, when the reflecting mirror M becomes hot due to the lighting of the lamp L, the heat transmitted from the reflecting mirror M causes the temperature of the mounting portion T of the lamp body B to the pole P to rise. If the high temperature condition due to this temperature rise continues for a long period of time, the material of the above-mentioned mounting portion T supporting the substantially entire weight of the appliance, especially the material near the root of the reinforcing column H, is thermally deteriorated, and cracks or breaks occur at this mounting portion T. In some cases, the lamp B could not be used. Therefore, only the mounting portion T to the pole P needs to be made of aluminum die cast or other metal member, and even if the lamp body is made of FRP, the metal member is used for the mounting portion, and the weight becomes heavy. There were problems such as being expensive.

[0004]

The problem to be solved is to prevent the mounting portion of the FRP material, such as a pole, of a lamp body from being deteriorated with time due to thermal influences and causing cracks or breaks. This is a point that cannot be done.

[0005]

The road lighting device of the present invention is a device in which a globe is attached to a lamp body made of reinforced plastic containing a light source and a reflecting mirror, and the lamp body is divided into upper and lower parts. It is characterized in that a mounting portion to the mounted body is formed in the lower housing, which is composed of at least two housings.

[0006]

[Function] Since the side of the lamp and the lower side of the lamp are covered by the lower housing side where the thermal influence from the lamp is small, the mounting portion to the mounted body to which the full load of the lamp is applied is formed. Withstands long-term use without deterioration.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a road lighting device according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a lamp body, which is an upper housing 1A constituting the upper side of the fixture and a lower housing 1 constituting the lower side thereof.
It consists of B and both are molded with the material of reinforced plastics (FRP). The upper housing 1A has a rectangular dish shape, and the upper housing 1A has a reflecting mirror 3 which accommodates a high-pressure discharge lamp 2 such as a metal halide lamp as a light source.
Is installed.

Further, the lower casing 1B has a partition wall 11 in the middle portion, the partition wall 11 having a thickness thicker than that of other portions.
.. 12A, 12A, ... and a plurality of columnar bodies 12, 12, ..., 12A, 12A ,. A plurality of reinforcing partition walls 13, 13, ...
13A, 13A, 13A are provided upright, and the upper surfaces of the partition walls 13A, 13A, 13A for reinforcement in the central portion are cut out in a semicircular shape so that the pole 4 fits. Reference numeral 14 is a fixture for the pole 4 having a semi-circular recess, which is attached to the holes (not shown) on the upper surface of the four large-diameter reinforcing / fixing columnar bodies 12A, 12A ,. Has been done. Reference numeral 5 is a lighting circuit component such as a ballast attached to the outer wall or the partition wall 11.

The reflecting mirror 3 is housed in the right side chamber, and a translucent globe 6 made of glass or plastics is provided on the lower surface thereof.

Reference numeral 6 denotes a waterproof packing between the upper housing 1A and the lower housing 1B, and other means for locking the upper housing 1A and the lower housing 1B, and between the lower housing 1B and the glove 6. Since the usual means is applied to the waterproof packing and the locking means, the illustration and the description thereof are omitted.

The luminaire having such a structure is provided in the upper housing 1
A is removed, and a columnar body 12 for reinforcing and fixing the lower housing 1B
The screws 15 on the upper part of A, ... Are loosened to form a gap between the fixture 4 having a semicircular recess and the central partition wall 13A, 13A, 13A having a semicircular recess on the upper surface. Put in the tip of pole 4. The lower housing 1B is fixed to the pole 4 by tightening the screws 15 ..., and the lower housing 1B is covered with the upper housing 1A to which the reflecting mirror 3 is attached, and fixed by means not shown. This completes the attachment to the pole 4. In this way, almost the entire load of this lighting fixture attached to the pole 4 is applied to the vicinity of the roots of the columnar bodies 12A for reinforcing and fixing the lower housing 1B.

When the lamp 2 of this luminaire is turned on, the heat from the lamp 2 is passed through the space inside the reflector 3 and the lamp body 1 to form the lamp body 1. The upper housing 1A and the lower housing are made of reinforced plastics. Body 1B and both housings 1A, 1B
Temperature also rises. This temperature rise is higher on the upper casing 1A side than on the lower casing 1B side, mainly due to thermal convection.

According to the present invention, the portion of the luminaire on which almost the entire load is applied is located on the side of the lower housing 1B, which has a lower temperature than the upper housing 1A, so that the mounting portion can be prevented from being thermally deteriorated. The present invention is not limited to the above-mentioned embodiment,
For example, the attached body to which the light body is attached is not limited to the pole, but may be a brace or the like extending from the wall surface of the building, and the shape of the light body may be a rounded shape instead of a square shape. Also,
Although the lamp body is described as being divided into two parts up and down, it is not limited to two parts and may be two or more as long as it is up and down. For example, the lower housing may be attached to a body to be attached, lighting circuit parts, or the like. It may be divided into two parts, that is, the housing part and the housing part of the reflecting mirror, or may be divided according to the design of the lamp body.

Further, the attachment places of the reflector and the lighting circuit parts housed in the lamp body are not limited to the embodiment, and may be either the upper case or the lower case, and the lighting circuit parts etc. are poles outside the lamp case. It is preferable to incorporate the lamp into a lamp, because the lamp can be made smaller and lighter.

Furthermore, the structure of the mounting portion to the mounted body in the lower housing is not limited to the embodiment, and the mounting portion may be formed as a block of blocks instead of a plurality of columnar bodies, or in the lower housing. The partition wall may be provided with an insertion hole so that the body to be mounted can be inserted therein, and the fixing means thereof may be band fixing or screw fixing. Furthermore, the light source is not limited to a metal halide lamp, and may be another discharge lamp such as a high pressure sodium lamp or an incandescent lamp such as a halogen bulb.

[0016]

As described in detail above, according to the present invention, in the case where the lamp body is molded with the reinforced plastic, the lamp body is composed of at least two housings which are divided into upper and lower parts, and the total weight of the fixture is Since the mounting part to the mounted body is formed on the hanging lower housing side, there is little thermal influence from the lamp in the vicinity of this mounting part and stable lighting is possible without thermal deterioration even after long-term use. In addition, since the entire housing including the mounting portion can be integrally molded with reinforced plastic, it is possible to provide a lighting fixture having various advantages such as easy manufacturing and cost reduction.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a lighting fixture showing an embodiment of the present invention.

FIG. 2 is a top view showing a part of the upper casing in FIG.

FIG. 3 is a side view of a mounting portion in FIG.

FIG. 4 is a partially cutaway front view showing a conventional example.

[Explanation of symbols]

 1 Lamp 1A Upper case 1B Lower case 2 Lamp 3 Reflector 4 Pole (attached object) 6 Globe

Claims (2)

[Claims] 1. An instrument comprising a reinforced plastic lamp body containing a light source and a reflecting mirror, and a globe attached to the lamp body, wherein the lamp body is composed of at least two casings which are vertically divided into a lower casing. A luminaire characterized in that a mounting portion for mounting a body is formed on the body side. 2. The lighting fixture according to claim 1, wherein the attached body is a pole.