JPS61260399A - Traffic signal lamp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a traffic signal light, and relates to a structure that improves the instantaneous lighting characteristics of a fluorescent lamp used as a light source in, for example, a pedestrian signal light.

[Conventional technology]

Conventional traffic signal lights, especially pedestrian traffic signal lights, use an incandescent lamp of, for example, 6 (IW) enclosed in a reflector, and have a configuration in which the light emitted from this lamp is directed toward the light projecting part of the reflector. However, signal lights using such incandescent lamps had problems such as high power consumption and limited light distribution.

Therefore, it has been proposed to use fluorescent lamps in traffic signal lights instead of conventional incandescent lamps (Japanese Patent Application No. 60-662
No. 63).

[Problem that the invention seeks to solve]

In signal lights that use fluorescent lamps instead of the conventional incandescent lamps mentioned above, fluorescent lamps generally tend to have a slight decrease in light output at low temperatures, or to have poor lighting characteristics during instant lighting.
In particular, since signal lights are installed outdoors, it is required to improve the lighting characteristics of fluorescent lamps at low temperatures.

The present invention was developed in view of the above-mentioned problems, and uses heat generated from a filament preheating circuit that preheats the filament of a fluorescent lamp to raise the temperature inside the signal lamp unit in which the lamp in which the fluorescent lamp is installed is higher than that of the outside air. The present invention provides a traffic signal light in which the lighting characteristics of a fluorescent lamp at low temperatures are improved.

[Means for solving problems]

The traffic signal light of the present invention comprises a fluorescent lamp, a reflector having the fluorescent lamp and a light projecting part, a color filter provided in the light projecting part of the reflector, a front cover, etc., and a light fixture. A signal lamp body including a lighting circuit for lighting the fluorescent lamp, and a preheating circuit for a filament of the fluorescent lamp, wherein at least the filament preheating circuit is built into the signal lamp body. It is.

(Function) In the traffic signal light of the present invention, the light emitted from the fluorescent lamp is directed directly to the light emitting part of the light fixture or is reflected by a reflective surface to display a signal, and the light fixture equipped with the fluorescent lamp is built-in. Heat dissipated from the filament preheating circuit of the fluorescent lamp increases the temperature inside the signal lamp unit, increasing the output of the fluorescent lamp at low temperatures and improving lighting characteristics.

〔Example〕

The configuration of an embodiment of the present invention will be explained with reference to FIGS. 1 to 3.

Reference numeral 1 designates a fluorescent lamp, which has a first bent part 3 bent into a substantially U-shape while forming a space inside the middle part of a light-transmitting tube body 2 of a light emitting part, and this first bent part 3. A second light-emitting part 2 is bent in a substantially U-shape by forming a space further inward as a tip.
4 when viewed from the second bent portion 4 side.
The straight pipe portions of the book are arranged at approximately equal intervals. Both ends of the fluorescent lamp 1 have a holder 6 molded from synthetic resin.
The holder 6 is integrally formed on the front surface thereof, and a connector connection pin (not shown) is provided protruding from the rear surface of the holder 6.

Furthermore, a cover portion 7 of the fluorescent lamp 1 is integrally provided on the front surface of the holder 6. This cover part 7 consists of three legs 8 protruding from the front surface of the holder 6 and an annular protection part 9 integrally formed at the front end of the legs 8. The front surface of the protection part 9 is arc-shaped. This serves as a mating guide surface. Furthermore, a fitting@groove portion 10 is integrally formed on the front surface of the holder 6.

Next, 11 is a lamp, and this lamp 11 is the fluorescent lamp 1.
a reflector 15 which includes a light emitting part 12 on its front surface and has a lamp fitting part 13 opened at its rear top;
A blue or red color filter 1T, which is provided in the front light projecting part 12 and is formed by a transparent hole penetrating the display part 16 of the doll representing a pedestrian walking or stopping, and bulges out in an arc shape; It is composed of a front cover 18 made of a transparent prism lens located in front of this color filter 1T and provided in the light projecting part 12 of the reflector 15 with a space between it and this color filter 17. At 18, the opening of the light projecting section 12 of the reflector 15 is sealed. The fitting groove 10 of the holder 6 fitted into the lamp fitting part 13 of the reflector 15 is elastically fitted and held.

Further, 19 is a signal lamp body, which is supported on the ground 21 by a support 20. A front plate 22 attached to the front surface of the signal lamp body 19 so as to be openable and closable has display windows 23 and 2 on which a front cover 18 provided on the light projecting part 12 of the reflector 15.15 is disposed.
3 are formed above and below, and the reflector 15.15 is arranged with the front cover 18 facing inside each display window 23.23. It is fixed with a nut 26 screwed onto a screw 25 protruding from the inside of the housing 22. Moreover, hoods 27.27 are provided above the display windows 23.23 of the signal lamp body 19, respectively. Note that the upper reflector 15 is provided with a red color filter 11, and the lower reflector 15 is provided with a blue color filter 17.

Further, inside the back surface of the signal lamp body 19, the reflector 1
A circuit unit 29 for a lighting circuit for the fluorescent lamp 1 and a filament preheating circuit is attached to the connector connection bin of the holder 6 of the fluorescent lamp 1 attached at 5.15 by an electric wire 28. Note that the power line 30 connected to this circuit unit 29 penetrates into the pillar 20 and connects the l1lIl device (
It is connected to the power supply via a relay (not shown).

Each fluorescent lamp 1.1 contained in the reflector 15.15 is mounted with the first bent portion 3 facing upward and the second bent portion 4 facing the color filter 11 side.

When maintaining and inspecting the fluorescent lamp 1, open the front plate 22 of the signal lamp body 19 and remove the fitting groove 10 that was engaged with the edge of the lamp fitting part 13 at the top of the back side of the reflector 15.
Remove the lamp 1 from the reflector 15 of the lamp 11. When installing the lamp 1, insert the lamp 1 into the reflector 15 from the top side using the lamp cover part 7 as a guide.
The fitting groove 10 of the holder 6 is connected to the lamp fitting part 1 of the reflector 15.
3 is elastically locked.

Next, a lighting circuit for the fluorescent lamps 1, 1 will be explained with reference to FIG.

The AC power supply 31 is connected to the flashing relay contacts 32 and 32,
A lighting circuit 33.33 consisting of a choke coil and a pulse generating circuit, and a series circuit consisting of a fluorescent lamp 1.1 are connected in parallel.

Also, the filament preheating circuit 34 of the fluorescent lamp 1.1
As shown in FIG. 4, the secondary coil 37a of the transformer 36 has the primary coil 35 connected to the AC power source 31,
The fluorescent lamps 1, 37b, 37c, and 37d
1 each filament 38a, 38b, 38c
, 38d are connected to form a constant heating filament preheating circuit.

Next, the operation of this embodiment will be explained.

When the power supply 31 is turned on, the secondary coil 37a is connected to the transformer 36.

Filaments 38a, 38b, 38c of fluorescent lamp 1.1 connected to 37b, 37c, 37d
, 38d is preheated and flashing relay contact 32
．． The fluorescent lamp 1 selected by the selective closing of 32 is turned on, and the light emitted from the fluorescent lamp 1 is directly emitted to the light emitting part 12 of the reflector 15 of the lamp 11, or is reflected by the reflector 15. Red or blue color light is reflected from the surface and directed toward the light projecting section 12 of the reflector 15, passes through the color filter 17 and the front cover 18, and is emitted from the display 123 of the signal lamp body 19, and is emitted from the display section of the color filter 17. The portion corresponding to 1.6 is illuminated with colored light from the fluorescent lamp 1 that has passed through the display section 16.

In particular, each fluorescent lamp 1 contained in said reflector 15.15
．． 1, the first bent portion 3 is attached facing upward, so that visibility is improved when the signal lamp body 19 is looked up from below, and the second bent portion 4 is attached facing the color filter 17 side. By attaching the light-emitting part to a larger size, the light from the second bent part 4 directly enters the color filter 17, the doll-shaped display part 16 becomes brighter, and the light distribution is appropriately expanded.

Furthermore, by disposing a unit 29 of a lighting circuit 33 and a filament preheating circuit 34 in the signal lamp body 19,
The heat generated from each circuit 33, 34 raises the temperature inside the signal lamp body 19, increasing the output of the fluorescent lamp 1 even at low temperatures, and the fluorescent lamp 1 is instantaneously turned on by the lighting signal.

In the above embodiment, the lighting circuit 33 of the fluorescent lamp 1 and the circuit unit 29 of the filament circuit 34 are connected to the signal lamp body 1.
9 has been described, the configuration is not limited to this configuration, and as shown in FIG. The lighting circuit 33 of the fluorescent lamps 1, 1 and the circuit unit 29 of the filament circuit 34 may be attached, and the lighting circuit 33 of the fluorescent lamps 1, 1 may be attached as shown in FIG.
．． The circuit unit 33 of the circuit unit 33 is mounted on the inside of the front plate 22 of the signal lamp body 19 between the lamps 11.11, and the circuit unit of the filament circuit 34 of the fluorescent lamp 1.1 is installed on the inside lower part of the back side of the signal lamp body 19. 40 can also be installed, and the lighting circuit 33, 33 of the fluorescent lamps 1, 1 and the filament preheating circuit can be provided as an integrated circuit unit or a separate circuit unit, and the circuit unit can be installed on the inner surface or front of the signal lamp body 19. It can be attached to an appropriate position on the face plate 22.

Further, in the above embodiment, the lighting circuit 33 for the fluorescent lamp 1.1.
33 and the filament circuit 34 are built into the signal lamp body 19. However, the signal lamp body 19 only needs to incorporate at least the filament preheating circuit for the fluorescent lamp 1.1. Further, in the above embodiment, the fluorescent lamp 1.1
Although the filament preheating circuit described above is based on a constant heating method, it is not necessarily limited to a constant heating method.

In addition, in the fluorescent lamp 1, the dimension L1 between the outer walls of the straight pipe part bent by the first bending part 3 is about 550 rin, and the dimension L1 between the outer walls of the straight pipe part bent by the second bending part 4. L2 is approximately 500 m, dimension L3 from the base on the mouthpiece side to the tip
is about 800 am, and a lamp with a lamp power of about 16 W is used.

In the above embodiment, the structure in which the display part 16 of the color filter 17 is formed by a transparent hole has been described, but the structure is not limited to this, and the display part 16 can be formed in any appropriate color, such as colorless and transparent, or white. .

Further, in the above embodiment, the fluorescent lamp 1 is described as a lamp in which the first bent part 3 and the second bent part 4 are formed in the light-transmitting tube body 2 of the light emitting part, but the fluorescent lamp 1 is limited to lamps having this shape. isn't it.

(Effects of the Invention) According to the present invention, at least a preheating circuit for the fluorescent lamp is built into a signal lamp body in which a fluorescent lamp is disposed and a lamp having a light projecting part is installed, so that the filament preheating circuit for the fluorescent lamp can be easily removed from the signal lamp body. The heat generated increases the temperature inside the signal lamp body, and even at low temperatures, the light output of the fluorescent lamp built into the signal lamp body installed outdoors does not decrease, and the instantaneous lighting characteristics do not deteriorate. It is possible to improve the lamp characteristics especially when the temperature is below O゛, and special heating I
II is not required, and the heat generated from the filament preheating circuit can be used effectively.

[Brief explanation of drawings]

FIG. 1 is a longitudinal side view of a signal light showing an embodiment of the present invention;
FIG. 2 is a front view of the same as above, FIG. 3 is a perspective view of the same fluorescent lamp as above, FIG. 4 is a circuit diagram of same as above, and FIGS. 5 and 6 are longitudinal sectional side views of a traffic signal light showing different embodiments. 1. Fluorescent lamp, 2. Translucent tube of light emitting part, 11.
・Lighting equipment, 12.・Light emitter, 19.・Signal lamp body, 29・
・Circuit unit including filament preheating circuit, 33...
Lighting circuit, 40...Filament preheating circuit unit. Yogi” 1 Introduction 6

Claims (1)

[Claims] (1) A fluorescent lamp, a lamp in which the fluorescent lamp is installed and has a light emitting part, a signal lamp body incorporating the lamp, a lighting circuit for lighting the fluorescent lamp, and a preheating circuit for the filament of the fluorescent lamp. A traffic signal light comprising: at least the filament preheating circuit built into the signal light body.