JP2002216295A - Lighting fixture for traffic signal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the maintenance such as lamp replacement and cleaning in a lighting fixture for traffic signal. SOLUTION: This lighting fixture comprises a box-like lighting fixture body 1 housing a reflector 3 and a lamp 5, and a front lid 2 attached with a lens 6. A pair of bearing parts 33 and 34 are respectively formed in symmetric positions in upper and lower rims of a front opening of the lighting fixture body, bearing parts 35 pivotally attached to the bearing parts are formed in one edge of the front lid, and cutouts 38 for loosely engaging fastening shafts 40 provided so as to freely tilt on the bearing pars are formed in another edge of the front lid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a traffic signal light which lights up in red, blue, yellow, arrows and the like.

[0002]

2. Description of the Related Art A conventional traffic signal lamp installed on a pillar at a road intersection or the like has a front lid openably and closably mounted on a front opening edge of a box-shaped lamp body, and a front face of the front lid. A hood for sunshade was attached to the camera, and a lens, a reflector and a light source were attached to the rear surface. Therefore, when replacing the lamp which is the light source, after removing the wing nut holding the front cover and opening the front cover, the stop which stops the lamp socket on the back side of the reflecting mirror on the back surface of the front cover. It was necessary to remove the fixture and pull the socket out of the reflector along with the lamp.

[0003]

For this reason, conventional traffic signal lamps require time and effort to replace the lamp at a high place. Also, if you try to clean the inner surface of the reflector or lens to remove dirt from waste gas, etc., you have to insert your hand through the lamp socket insertion hole on the back of the reflector, so maintenance work at high places is easy. There was a problem that was not.

In general, the traffic signal lamps are arranged side by side below red, blue and yellow signals, for example, as indicated by arrow signal lamps. In some cases, hoods and the like for sunshade interfered with the signal lamps arranged in that line, and the signal lamps could not be opened sufficiently. This makes maintenance work such as lamp replacement and cleaning as described above more difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and to facilitate maintenance such as lamp replacement and cleaning in a traffic signal lamp.

[0006]

For this purpose, a traffic signal lamp according to the present invention comprises a box-shaped lamp main body in which a reflector and a lamp are housed, and a front cover in which a lens is mounted. A pair of bearings are respectively formed at symmetric positions of an upper edge and a lower edge of the front opening of the lamp body, and a bearing is formed on one side of the front lid so as to be pivotally connected to the bearing, and the other side of the front lid is formed. Is characterized in that a notch for loosely fitting a tightening shaft provided on the bearing portion to be tilted is formed. Further, the present invention is characterized in that in the above traffic signal light device, the fastening shaft is formed by screwing a wing nut to a screw portion thereof.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows a situation in which three lamps X, Y, and Z of the same structure are connected side by side to light red, blue, and yellow, respectively. The lamp X has a front cover 2 closed, The lamp Y shows a state where the front cover 2 is opened upward, and the lamp Z shows a state where the front cover 2 is opened upward and the reflecting mirror 3 is further opened upward. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional view taken along line BB, and FIG. 4 is a view taken along line CC of FIG. In the figure, reference numeral 1 denotes a substantially square box-shaped aluminum die-casting lamp body having an open front surface, reference numeral 2 denotes an aluminum die-casting front cover which covers the front opening of the lamp main body, and reference numeral 3 denotes a lamp body accommodated therein. A parabolic reflector 4 is a socket fitted to the bottom of the reflector, and 5 is a lamp screwed into the socket. A spherical lens 6 is fitted in a circular hole formed in the front cover 2 with a waterproof packing 7 interposed therebetween. Reference numeral 8 denotes a stopper for fixing the lens 6. 9
Is a substantially semi-cylindrical sunshade hood fixed to the periphery of the lens 6 outside the front cover 2 with screws 10. Also, 1
Reference numeral 1 denotes a bolt connecting the lamp bodies, and reference numeral 12 denotes an aluminum die-cast cover fixed to both ends of the connection body. Reference numeral 13 denotes a groove 1 on the entire periphery of the front opening edge of the lamp body 1.
4 and a packing for waterproofing loaded in this groove, 15
Is a power distribution connector provided at the bottom inside the lamp body 1.

FIG. 5 is a sectional view taken along line DD of FIG.
Is a sectional view taken along line EE, FIG. 7 is a sectional view taken along line FF, and FIG.
FIG. 9 is a sectional view taken along the line H-H. FIG. 9 is a sectional view taken along the line H-H. As shown in FIG. A prism 18 having a support shaft 17 protruding from the side surface is inserted into the holder, and the support 18 is inserted into the holder.
By engaging a stop piece 19 with a lower part of the lamp unit, four support shafts 17 are evenly arranged in the lamp body. Then, an aluminum die-cast peripheral frame 20 fitted around the reflecting mirror 3
Arms 21 to 24 are integrally protruded at four locations on the outer periphery of the arm, and a shaft hole 25 into which the support shaft 17 is loosely fitted is formed at the tip of the arm 21 and the arm 22, as shown in FIGS. A compression coil spring 26 is extrapolated to one of the support shafts, and the elasticity thereof biases the peripheral frame 20 to the left in FIG. At the tip of the arm 23, a wedge-shaped engaging piece 27 is formed as shown in FIG. 7, and at the tip of the arm 24, as shown in FIGS. Formed and the pressing piece 2
The spacer 30 is rotatably supported on a shaft 29 protruding near the support 8, and the spacer 30 is pressed against the side surface of the holding piece 28 and the support 1.
8 to be interposed.

Reference numeral 31 denotes a socket fastening band made of a hard metal wire for supporting and fixing the socket 4 fitted to the bottom of the reflector from the rear by locking both ends to the peripheral frame 20; This is an elastic coil portion interposed for applying tension to the band.

For this reason, the reflecting mirror 3 is pivotally supported on the support shaft 17 by the shaft holes 25 formed in the arms 21 and 22, and the reflecting mirror 3 is opened upward as shown in the lamp Z in FIG. Thus, the back side of the reflecting mirror 3 and the power distribution connector 15 can be inspected. Further, the reflecting mirror 3 is closed, the engaging piece 27 is engaged with the support shaft 17, and the spacer 30 is pressed against the side surface of the holding piece 28 and the support 18.
By interposing the engaging piece 27 and the support shaft 17 so as not to be unnecessarily disengaged, the reflecting mirror 3 is closed as shown in the lamp Y of FIG. Can be held.

Also, as shown in FIGS.
Numeral 3 denotes a pair of bearings formed on the upper edge of the front opening of the lamp body 1, and numeral 34 denotes a pair of bearings formed at the lower edge of the front opening of the lamp body 1 and formed symmetrically with the bearings. The two bearing parts are formed in the same shape. 35 is a bearing 33,
A bearing portion formed on one side of the front cover 2 so as to match with 34, a pivot 36 skewed through the bearing portion 33 and the bearing portion 35, and 37 an E-ring for retaining the same. The front cover 2
A notch 38 is formed on the other side. 39 is the bearing 3
Reference numeral 40 denotes a pivot that is inserted into the pivot, and reference numeral 40 denotes a tightening shaft that is tiltably provided by inserting a loop portion 41 through the pivot. Reference numeral 42 denotes a wing nut screwed into a screw portion 43 of the tightening shaft. When the front cover 2 is closed, the fastening shaft 40 can be loosely fitted in the notch 38 as shown in FIG. Reference numeral 44 denotes a stopper E for the pivot 39.
It is a ring.

[0012] In the traffic signal lamp configured as described above,
The bearing 35 of the front cover 2 is attached to the bearing 33 of the upper edge of the lamp body 1.
3, the front cover 2 can be opened upward as shown in FIG. Although not shown, if the bearing 35 of the front cover 2 is pivotally attached to the bearing 34 at the lower edge of the lamp body 1, the front cover 2 can be opened downward. For this reason, the opening direction of the front cover 2 can be appropriately selected according to the installation condition. For example, if there is an arrow signal at the top or bottom, the opening direction of the front cover 2 should be set to avoid it. Can be.

Then, the wing nut 42 is loosened to tighten the tightening shaft 40.
The front cover 2 can be easily opened by pulling the front cover 2 out of the notch 38. The lamp 5 can be opened by opening the front cover 2.
Can be replaced or the inner surface of the reflecting mirror 3 can be wiped, which greatly facilitates maintenance work at high places.

The opening direction of the peripheral frame 20 can be set to any of the upper and lower directions by assembling the arms 21 to 24 to the support shaft 17 with the upper and lower sides of the peripheral frame 20 reversed. In this embodiment, an aluminum die-cast product is described. However, it is needless to say that a plastic or other material can be used.

[0015]

As described above, the traffic signal lamp according to the present invention comprises a box-shaped lamp main body in which a reflector and a lamp are housed, and a front cover in which a lens is mounted. A pair of bearings are formed at symmetrical positions of the upper edge and the lower edge of the front opening of the container body, and a bearing is formed on one side of the front lid so as to be pivotally connected to the bearing. Is formed by forming a notch in which a tightening shaft provided to be tiltable in the bearing portion is loosely fitted, so that the front cover can be opened upward or downward with respect to the lamp body. Since it can be set freely, it has a beneficial effect of facilitating maintenance work at high places such as lamp replacement without obstructing opening and closing of the front cover.

[Brief description of the drawings]

FIG. 1 is a front view of a traffic signal light according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a view taken along line CC in FIG. 3;

FIG. 5 is a sectional view taken along line DD of FIG. 4;

FIG. 6 is a sectional view taken along line EE of FIG. 4;

FIG. 7 is a sectional view taken along line FF of FIG. 4;

FIG. 8 is a sectional view taken along line GG of FIG. 4;

FIG. 9 is a sectional view taken along line HH of FIG. 4;

FIG. 10 is a sectional view taken along line II of FIG. 4;

FIG. 11 is an exploded perspective view of a main part of a traffic signal light according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lamp main body 2 Front cover 3 Reflector 4 Socket 5 Lamp 6 Lens 9 Sunshade hood 33 Bearing part 34 Bearing part 35 Bearing part 36 Axis 38 Notch 39 Axis 40 Tightening axis 42 Wing nut

Claims (2)

[Claims] 1. A box-shaped lamp main body in which a reflector and a lamp are housed, and a front cover on which a lens is mounted, respectively, at symmetric positions of an upper edge and a lower edge of a front opening of the lamp main body. A pair of bearings are formed, and a bearing is formed on one side of the front cover so as to be pivotally connected to the bearing. On the other side of the front cover, a tightening shaft provided on the bearing so as to be tiltable is free. A traffic signal lighting device characterized by forming a notch for fitting. 2. The traffic signal lamp according to claim 1, wherein the tightening shaft is formed by screwing a wing nut to a screw portion thereof.