JPH0641282Y2 - lighting equipment - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a lighting fixture in which a globe is fixed to a fixture body by sandwiching a peripheral portion of the globe between a holding frame fixed to the fixture body and the fixture body.

[Prior art]

Conventionally, as shown in FIG. 4, a flat plate-shaped instrument body 4 to which a light source 1 such as a straight tube fluorescent lamp is mounted and fixed to a mounting surface such as a wall surface or a ceiling surface, and a transparent material are used. There is provided a lighting fixture including a globe 2 formed to cover the light source 1 and a holding frame 3 that holds the peripheral portion of the globe 2 between the fixture main body 4. The globe 2 has a semi-cylindrical shape, and is formed in a shape in which a divided surface obtained by dividing the cylinder in half is opened. The opening of the globe 2 is closed by the instrument body 4, and the light source 1 attached to the instrument body 4 is covered by the globe 2. A flat surface portion 2a that is substantially orthogonal to the front surface of the instrument body 4 and a ridge 2b along the opening edge of the globe 2 are formed on the outer peripheral surfaces of both sides of the globe 2.
The glove 2 is fixed to the instrument body 4 by sandwiching the ridge 2b between the holding frame 3 and the instrument body 4. The holding frame 3 is fixed to the instrument body 4 by a mounting screw 5 screwed to the instrument body 4 through the holding frame 3. Here, the outer peripheral surface of the pressing frame 3 is a smooth curved surface so as to be substantially continuous with the peripheral surface of the globe 2. Also, the presser frame 3
Are to be mounted from below in FIG. 4 along the plane portion 2a of the globe 2.

[Problems to be solved by the device]

In the above configuration, the flat surface 2a is formed on the glove 2, and the flat surface 2a is substantially orthogonal to the front surface of the instrument body 4, so that the glove 2 and the presser foot are pressed when viewed from the front of the instrument body 4. The light source 1 is placed in the gap 6 formed between the frame 3 and the frame 3.
There is a problem that the light rays radiated from the device are hardly introduced, the gap 6 becomes dark and becomes conspicuous, and the appearance is impaired. Further, since the light distribution on both sides is limited by the holding frame 3, the opening angle of the light distribution is narrowed in the above configuration in which the flat surface portion 2a is extended in the direction substantially orthogonal to the front surface of the instrument body 4. There are also problems. The present invention is intended to solve the above problems, and an object of the present invention is to provide a lighting device in which the gap between the globe and the holding frame is inconspicuous and the light distribution opening angle is wider than in the past. To do.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, an instrument body in which a light source is mounted on the front surface and fixed to a mounting surface, a globe made of a translucent material to cover the light source, and a first outer peripheral surface of the globe projectingly provided. The pressing frame is fixed to the device body in a form of being sandwiched between the projecting line and the device body. The front side of the pressing frame is the peripheral part of the glove with the front face of the first projecting line as one peripheral wall. A groove is formed with the rear surface of the second protrusion protruding from the other peripheral wall, and the protrusion protruding from the holding frame fits into the groove, and the front face of the protrusion of the holding frame and the second protrusion are formed. The rear surface of the stripe is formed so as to substantially coincide with the direction of the ray bundle emitted from the light source.

[Action]

According to the above configuration, on the peripheral portion of the glove, the front surface of the first protrusion that is sandwiched between the instrument body and the pressing frame is one peripheral wall, and the second protruding portion is provided on the front surface side of the pressing frame. A groove is formed with the rear surface of the protrusion as the other peripheral wall, the protrusion protruding from the pressing frame is fitted into the groove, and the front surface of the protrusion of the pressing frame and the rear surface of the second protrusion are radiated from the light source. The light from the light source passes through the gap formed between the globe and the front surface of the holding frame, because it is formed so as to approximately match the direction of the bundle of rays that is formed, and the gap does not become dark. It becomes inconspicuous. Also, of the side walls of the groove formed in the peripheral part of the globe, the side wall farther from the front of the instrument body is made to substantially coincide with the direction of the light beam emitted from the light source, so the emission of light from the globe The surface can be made wider than before, and the spread angle of the light distribution can be made larger than before.

【Example】

As shown in FIGS. 1 to 3, the instrument body 4 has a flat plate shape, and a light source 1 such as a straight tube fluorescent lamp is disposed on the front surface of the instrument body 4. Further, the glove 2 formed in a semi-cylindrical shape from a translucent material such as glass or synthetic resin is attached to the front surface of the instrument body 4. The globe 2 is formed in a shape in which a dividing surface that divides the cylinder in half is opened, and is attached to the instrument body 4 so as to close the opening. A flat surface portion 2a that is substantially orthogonal to the front surface of the instrument body 4 is formed on the outer peripheral surfaces of both sides of the globe 2, and a first ridge 2b is provided along the opening edge of the globe 2. A second ridge 2c is provided at the front end (lower end in FIG. 1) of the flat surface portion 2a. That is, the groove portion 2d surrounded by the front surface of the first protrusion 2b, the rear surface of the second protrusion 2c, and the flat surface portion 2a is formed. This groove 2d is the glove 2
Is formed over the entire length in the direction orthogonal to the paper surface of FIG. The second protrusion 2c has a triangular cross section, and the rear surface of the second protrusion 2c, which is the peripheral wall of the groove 2d, is formed so as to substantially coincide with the direction of the light beam emitted from the light source 1. Further, the front surface of the second protrusion 2c is formed in an arc shape that smoothly continues to the outer peripheral surface of the globe 2. Since the glove 2 has such a shape, if the resin is injected from the instrument body 4 when the glove 2 is formed by injection molding or the like, a bulge exists in the portion of the second protrusion 2c. This facilitates the resin to flow and improves the yield of the gloves 2. As shown in FIG. 2, the holding frame 3 has a substantially U-shaped frame body 3a that abuts both side surfaces and one bottom surface of the globe 2.
And a bottom plate 3b attached to the tip ends of both leg pieces of the frame body 3a by a fixing screw 7 and contacting the other bottom surface of the globe 2. The frame body 3a is formed with a protrusion 3c that fits into the groove 2d of the globe 2, and when the holding frame 3 is fixed to the instrument body 4 by the mounting screws 5 inserted into both leg pieces of the frame body 3a, the protrusion 3c is projected. The first ridge 2b is sandwiched between the portion 3c and the device body 4, and the glove 2 is fixed to the device body 4.
Here, to attach the presser frame 3 to the glove 2,
As shown in FIG. 2, with the frame body 3a and the bottom plate 3b removed,
The projection 3c may be slid and inserted into the groove 2d, and then the bottom plate 3b may be coupled to the frame body 3a by the fixing screw 7. In this way, the glove 2 and the holding frame 3
If they are joined together, they can be handled as one component, and the handling becomes easy when the light source 1 is replaced. Between the first ridge 2b and the instrument body 4, and the first ridge 2b
A packing 8 is sandwiched between the holding frame 3 and the holding frame 3 to provide cushioning and drip-proof between the glove 2 and the instrument body 4.

[Effect of device]

As described above, according to the present invention, in the peripheral portion of the glove, the front surface of the first protrusion that is sandwiched between the instrument body and the press frame is used as one peripheral wall, and the first protrusion is provided on the front side of the press frame. A groove is formed with the rear surface of the second protrusion as the other peripheral wall, the protrusion protruding from the pressing frame is fitted into the groove, and the front surface of the protrusion of the pressing frame and the rear surface of the second protrusion are light sources. The light from the light source passes through the gap formed between the globe and the front surface of the holding frame because the light flux emitted from There is an advantage that it becomes inconspicuous. Also, of the side walls of the groove formed in the peripheral portion of the globe, the side wall farther from the front of the instrument body is made to substantially coincide with the direction of the light beam emitted from the light source, so that the light emitted from the globe is emitted. The surface can be widened as compared with the conventional case, and the divergence angle of the light distribution can be increased as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, FIG. 3 is a perspective view of the same, and FIG. 4 is a sectional view showing a conventional example. 1 ... Light source, 2 ... Globe, 2d ... Groove part, 3 ... Holding frame, 4 ... Instrument body.

Claims (1)

[Scope of utility model registration request] 1. A device main body having a light source mounted on a front surface and fixed to a mounting surface, a globe made of a translucent material for covering the light source, and a first protrusion provided on an outer peripheral surface of a peripheral portion of the globe. A holding frame fixed to the device body while being sandwiched between the device body and the device body. The glove has a peripheral portion in which the front surface of the first ridge is one peripheral wall and the front surface side of the pressing frame projects. A groove is formed with the rear surface of the second protruding ridge formed as the other peripheral wall, and the protruding portion protruding from the pressing frame fits into the groove, and the front surface of the protruding portion of the pressing frame and the rear surface of the second protruding ridge A luminaire in which and are formed so as to substantially coincide with the direction of the light beam emitted from the light source.