JP3519952B2 - Railway colored light type traffic light, and its lamp and control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railway colored light type traffic signal, and further relates to a portion of the lighting device and a control device for remotely controlling it. As a specific example of a colored light type traffic signal for railways, a special signal lighter on a railroad crossing,
Examples include railroad crossing warning lights, multi-lamp color traffic lights, and departure reaction signs.

[0002]

2. Description of the Related Art A railway signal system using an electric three-position multi-light type color light type traffic signal, which is a typical example of a color light type traffic signal for railways (see FIG. 6 (a)), follows a line 1 in a predetermined section. It is composed of a traffic light 4 (colored light type traffic light for railroad) and a control device 2 (control device for colored light type traffic light for railroad) that remotely controls the traffic light 4 via a cable 3, The control device 2 centrally controls each traffic light 4 in accordance with the train operation on the track 1 and the light of any appropriate color is turned on in accordance with this, whereby the signal is displayed.

The traffic signal 4 (see FIGS. 6 (b) and 6 (c)) is attached to a pillar 5 standing upright on the ground beside the track, but a junction box 6 attached to a low-level portion where it is easy to work.
And a light box 8 mounted on a high-level part that is easily visible from a train and the like, and a cable 7 connecting the two. The cable 3 from the control device 2 is connected to the cable 7 at the terminal board in the junction box 6.

As an example, the lamp box 8 has three lamps 9
(Color lights for railway traffic lights) are provided in a vertical line (see FIG. 6). Specifically, with respect to the rear plate 8a provided facing the direction of arriving trains, to the punched holes surrounded by the hoods 8b, respectively, in order from the top, the green lamp 9g and the yellow lamp. The container 9y and the red lamp 9r are fitted. Further, the cable 7 reaching the light box 8 is branched into three inside the light box 8, and each is connected to the corresponding lamp 9.

Such a traffic light 4 includes a light bulb type in which a light bulb is used as a light source of the lamp 9 and an LED (light emitting diode).
The LED type using is used. The LED traffic light has been developed to save labor and energy for periodical light bulb replacement work of a light bulb traffic light that has been used for many years (Japanese Patent Publication No. 7-23097 and Japanese Patent Laid-Open No. 9-226582). (See the bulletin, etc.) First, FIG.
A railway signal system using a light bulb type traffic signal will be described with reference to FIG. 9, and then a railway signal system using an LED type traffic signal will be described with reference to FIGS. 10 to 13.

A light bulb used as a light source for a light of a light bulb type traffic light (see FIG. 7) is provided with double filaments, and one of the filaments is broken at the end of its life. In the system including the control device 2 (see FIG. 8), the cable 3, the junction box 6, and the cable 7 are also included.
A light source drive voltage is selectively applied from the control device 2 to each lamp 9 of the lamp box 8 via the.

That is, in the control device 2 (see FIG. 8),
In addition to the power supply 21 that supplies power to each lamp 9, a control circuit 24 including a relay, a microprocessor, and the like is incorporated, and the control circuit 24 is a signal that is predetermined according to the status of the train or the route configuration conditions. The control circuit or the signal control routine 25 is incorporated, and by the hardware processing or the program processing, the relay 22 and the relay 23 inserted in each power supply line from the power source 21 to each lighting device 9 are operated by the train. When the green lamp drive voltage Vg applied to the power supply line to the green lamp 9g becomes significant, the green lamp 9g lights up (see FIG. 9).
(See (a)), and when the yellow lamp driving voltage Vy applied to the power supply line to the yellow lamp 9y becomes significant, the yellow lamp 9y lights up (see FIG. 9B), and the red lamp 9r is supplied with power. When the red light driving voltage Vr applied to the electric wire becomes significant, the red light device 9r is turned on (see FIG. 9C).

The current supplied from the control device 2 to each lamp 9 returns to the common current Ic via the common power supply line and returns to a constant level under normal conditions (see FIG. 9).
(See (d)), the control device 2 is also provided with a common current detection circuit 26 that detects the common current Ic (see FIG. 8). The common current detection circuit 26 has a common current Ic.
Current detection signal A and a predetermined threshold B corresponding to the amplitude level of
And the result is output as a disconnection alarm signal C.

When any one of the lamps 9 is broken or broken, for example, when the light bulb of the yellow lamp 9y is broken, when the yellow lamp drive voltage Vy is significant, the level of the common current Ic is increased. Almost halved (see FIG. 9E), and the current detection signal A falls below the threshold value B correspondingly (see FIG. 9E).
(See (f)), and a significant disconnection alarm signal C is output from the common current detection circuit 26 (see FIG. 9 (g)). When the occurrence of the disconnection in the traffic light 4 is detected while staying at the control device 2, the corresponding lamp 9 of the traffic light 4 is detected before the other remaining filament is disconnected.
Is exchanged for a good product. In this way, irregular maintenance work is also performed at any time according to remote detection of disconnection, so that reliable operation of the railway signaling system that exceeds the certainty obtained by periodical inspection and maintenance work is ensured.

On the other hand, the lamp 9 of the LED type traffic light (see FIG. 10) has a frame 91 attached to the lamp box 8.
And a case 92 that extends rearward and fits inside the light box 8,
Cable 93 extending from case 92 and gathering in cable 7
A cover 94 mounted from the side opposite to the case 92 with respect to the frame 91, a substrate 95 supported by the frame 91 and surrounded by the case 92 and the cover 94, and a large number of LEDs 96 implanted in the substrate 95. I am
These LEDs 96 are used as light sources.

The green light source 9g has a light source L that emits green light.
The ED96 is used, the LED 96 that emits yellow light is used as the light source of the yellow lamp 9y, and the LED 96 that emits red light is used as the light source of the red lamp 9r. In any lamp 9, the LED 96 is The light-emitting portions are directed to the cover 94 side and are distributed and concentrically or matrix-shaped on one surface of the substrate 95. Then, the light emitted from each LED 96 travels in the vertical direction (right side in FIG. 10) from the substrate 95, apart from the diffused component. Accordingly, the lamp 9 of the LED type traffic light includes a light source in which a large number of light emitting elements are arranged in the same light sending direction. Also, the substrate 95
Is made of a printed circuit board or the like reinforced with an aluminum plate, and the cover 94 is made of a transparent member such as glass or at least a semi-transparent member, and is transparent. As a result, the lighting device 9 also includes a translucent lid that surrounds the light source from the light transmission direction side.

A large number of LEDs 96 for each lamp 9 (see FIG.
1), and after they are connected in series by the same number, they are further connected in parallel to form a circuit equivalent to a two-terminal network. When the light source drive voltages Vg, Vy, Vr are received from the control device 2 between the terminals, they are turned on all at once. It is supposed to do. In addition, power supply 2
In order that the output of No. 1 can be operated by AC, a diode 96a in the reverse direction is connected in parallel to the series-parallel circuit of the LED 96 (see FIG. 11A), or a diode bridge 96c for performing full-wave rectification is connected in parallel. In addition, an appropriate current limiting resistor 96b may be inserted and connected (FIG. 11).
(See (b)).

In this way, the lamp 9 of the traffic light, which uses the LED as the light source, has a long service life and can be replaced regularly or irregularly. Furthermore, reduction of power consumption was achieved. However, the LED has a light emission characteristic that the light emission intensity such as luminous intensity does not increase even if the current increases to a certain level (see FIG. 12A).
Further, even if the LED current (Ic) is stable at a constant level, the emission intensity such as luminance gradually decreases over a long period such as several thousand hours (FIG. 12).
(See (b)). These characteristics are different from those of filament light bulbs.

Therefore, when controlling the LED type traffic light,
From the control device 2, the common current detection circuit 26 used together in the control of the light bulb type traffic signal is removed (see FIG. 13), or the detection circuit 26 is not used because it remains useless even if it remains. Such a control device for a railway color light type traffic signal only controls the power supply to the light source of the railway color light type traffic signal, but cannot easily detect an abnormality of the traffic signal such as disconnection detection or core disconnection detection. Has become.

[0015]

SUMMARY OF THE INVENTION Such a conventional LE
In the case of a railway signaling system that uses a D-type traffic light, the frequency of light source replacement work has decreased, but the burden of maintenance work has been reduced compared to the case of a light bulb type traffic light, but there are other failures and defects in the light source. Since the abnormality of is not automatically detected,
The inspection work, which is repeated in a shorter period than the replacement period to find such an abnormality, is not so much.
And in the case of railway traffic signals, unlike road traffic signals that many people and vehicles pass by, it is not possible to expect an anomaly to be detected by a third party, so the burden on maintenance workers and other inspection workers is rather increased. Can also be said.

Further, since there are variations in each light emitting element or each unit even with deterioration due to aging, it is not always easy to reliably predict the safe replacement time of the light source. In addition, it is difficult for operators to make patrols to detect accidental failures and unexpected sudden deterioration quickly, and it is necessary to go into the orbit to see the lighting state, which is not only difficult. However, there are individual differences in visual measurement, and the judgment is not constant. Therefore, it is required to automatically detect the deterioration of the light source for the railway color light type traffic signal that uses a large number of light emitting elements for the light source instead of the light bulb.

However, in a traffic light using LEDs as a light source, a large number of LEDs are connected in series, and the LEs in the series are further connected.
Since the group D has a circuit configuration in which a plurality of groups are connected in parallel, even if the LED group in one row is disconnected, the amount of change in the current of the entire lamp is only a slight amount. Considering its existence, it is difficult to detect a decrease in luminous intensity by detecting a change in current with a sensor provided at the power transmission end like a light bulb type traffic signal. The presence of the above-described non-linear current-luminance characteristic of the LED (see FIG. 12 (a)) and the aging characteristic of gradually decreasing emission intensity (see FIG. 12 (b)) also hinders automatic detection of light source deterioration. I'm out.

For this reason, it is conceivable to add a function that the conventional light bulb type traffic light or LED traffic light does not have, specifically, a function of measuring the luminous intensity by the traffic light itself.
If the measurement member is simply placed right in front of the light source, etc., it may be possible to receive light easily, but the lighting may be blocked, the manufacturing and maintenance work of the lamp may be troublesome, and the additional equipment burden may be too heavy. If that happens, it is rather inconvenient. Therefore, in order to accurately predict and detect the deterioration failure of the light source consisting of a large number of light emitting elements, and to enable prompt pre-maintenance, it is possible to automatically measure the emission intensity of the railway color light type traffic signal, and At this time, it is a technical issue to devise so as not to impair the visibility, which is the basic performance of the traffic signal, the productivity that greatly affects the cost, and the workability.

Further, in the conventional control device for the railway color light type traffic light, when the light source drive voltage is changed, the common current also changes and the reliability of disconnection detection is impaired. Therefore, the control circuit is complicated and the processing is complicated. From the viewpoint of avoiding such problems, the same electric power is supplied to the traffic signal at night as during the day. For this reason, since the lights of the railway color light type traffic lights shine with a constant brightness day and night,
Even if the light intensity is appropriate in the daytime, at night, not only the LED type traffic light but also the bulb type traffic light may be seen more than necessary from a distance. In addition, if the LED is used as the light source, power is wasted at night,
There is also a problem that it accelerates the deterioration of. Therefore,
In order to automatically measure the light emission intensity of a railway color light type traffic light, it is a further problem to solve these problems as well.

The present invention has been made to solve the above problems, and an object of the present invention is to realize a railway color light type traffic signal capable of automatically measuring the light emission intensity, a lighting device thereof, and a control device thereof. . Another object of the present invention is to easily and automatically adjust the emission intensity by utilizing the automatic measurement of the emission intensity.

[0021]

[Means for Solving the Problems] First to eighth means for solving the problems, which have been invented to solve the above problems,
The configuration and action and effect will be described below.

[First Solving Means] In the lighting device of the railway color light type traffic signal of the first solving means (as described in claim 1 at the beginning of the application), a large number of light emitting elements have the same light transmitting direction. A light source of a railway color light type traffic light equipped with a light source provided on the light source side and a translucent lid that surrounds the light source from the light transmission direction side, the light entrance portion provided on the light source side is provided on the lid. It is provided with a directed light guide member.

In the lighting device of the railway colored light type traffic signal of the first solution, most of the light emitted from the light source passes through the lid and is used for signal display. , Part of which is reflected by the inner surface of the lid and returns to the light source side. Then, the reflected light that reaches the light incident portion of the light guide member is guided to an appropriate photoelectric conversion element or the like by the light guide member. Since the intensity of the reflected light is almost proportional to the emission intensity of the light source, a measurement result equivalent to that obtained by directly receiving the light from the light source and measuring the emission intensity can be obtained.

Further, since it is not necessary to provide an opaque object such as a light receiving element for blocking the light transmission to the light transmission destination, the signal display is not damaged. There is nothing that interferes with the work when attaching the lid during the assembly of the lamp, and when attaching and detaching the lid during maintenance work such as inspection and replacement. Furthermore, what is provided at the light source side by side with the light emitting element is only a light guide member which is usually formed thin using a fiber or the like, and a photoelectric conversion element or an amplification circuit larger than that is inserted between the light emitting elements. Since there is no need, there is no inconvenience that the number of light emitting elements is reduced or the light emitting elements are non-uniformly arranged, which makes it difficult to see.

By deriving the light reflected by the lid from the light source side in this manner, it is possible to indirectly detect the light emission intensity of the light source, and, unlike the direct light reception, the visibility and It is possible to prevent the productivity and workability of the light transmitting side member such as the lid from being deteriorated. Therefore, according to the present invention, it is possible to realize a lighting device of a railway color light type traffic signal capable of automatically measuring the light emission intensity without impairing the visibility and the like.

[Second Means for Solving] The lighting device of the colored light type traffic signal for railway according to the second means for solving the problems (as described in claim 2 at the beginning of the application) is for the railway according to the above first means for solving. It is a lamp device of a color light type traffic signal, wherein the light guide member is extended to the outside of the device via an optical connector provided inside the device.

In the lighting device of the railway color light type traffic signal according to the second solving means, it becomes possible to provide an appropriate electronic circuit section such as a photoelectric conversion element or an amplifier circuit outside the device.
In that case, since the electronic circuit unit is located far from the light source, the influence of electromagnetic noise such as switching noise of the light emitting element and train line noise is mitigated. Therefore, since a detection signal with less noise can be obtained even if amplification is performed at a high ratio, accurate measurement can be performed even with an indirect measurement method that detects reflected light that is weaker than direct light.

In addition, since the extending portion of the light guide member is separable from the light entering portion at the optical connector, the light emitting unit including the light source leaves the extending portion of the light guide member in the lamp and the lamp. It is possible to remove it from the container toward the light-transmitting side, or attach it in reverse. Therefore, the work can be easily performed when the light emitting unit is mounted at the time of assembling the lamp and when the light emitting unit is attached or detached at the time of maintenance work such as inspection or replacement.

In this way, when the reflected light from the lid is led out from the light source side, the influence of the light source is mitigated and the light source portion is also attachable / detachable in the same direction as the lid. Can be accurately detected, and the productivity and workability of not only the lid but also the members around the light source can be prevented from deteriorating. Therefore, according to the present invention, it is possible to realize a lighting device of a railway color light type traffic signal capable of accurately and automatically measuring light emission intensity without impairing workability and the like.

[Third Solving Means] The lighting device of the railway color light type traffic signal of the third solving means (as described in claim 3 at the beginning of the application) has the above first and second solving means. The railway color light type traffic light of the above item, wherein the lid has a partially reinforced internal reflectance.

In the lighting device of the railway color light type traffic signal of the third solving means, the light entrance portion of the light guide member is directed particularly toward the reinforced portion of the lid, and more reflected light is emitted. Since it is detected, the measurement accuracy is improved. On the other hand, the reflectance-enhanced part can be made in a narrow range, and the highly transparent member increases the reflectance at a large rate by only slightly lowering the transmittance, so the light amount of the entire lamp does not decrease much. I'm done. In addition, since the reflectance-enhanced part is provided on the inner surface of the lid, it is not directly exposed to rain or wind, so it can be easily embodied by a simple attachment / formation method such as adding members or processing the surface. You can It does not impair the ease of attaching and detaching the lid.

Since a large amount of reflected light is detected when the reflected light from the lid is guided from the light source side in this manner, it is possible to indirectly and accurately detect the light emission intensity of the light source. It is also possible to prevent the productivity and workability of the lid from deteriorating. Therefore, according to the present invention, it is possible to realize a lighting device of a railway color light type traffic signal capable of accurately and automatically measuring light emission intensity without impairing workability and the like.

[Fourth Solving Means] In the railway color light type traffic light of the fourth solving means (as described in claim 4 at the beginning of the application), a large number of light emitting elements are provided with the light transmitting directions aligned. A colored light type traffic signal for a railway, which comprises a light source and a translucent lid that surrounds the light source from the light transmitting direction side, in which a light entrance portion is directed to the lid and a light guide destination is from the light source side to the lamp. It is provided with a light guide member extending to the outside, and a transmitting means for digitally modulating the output signal of the photoelectric conversion means provided at the light guide destination and sending the digitally modulated signal to a power supply line to the light source.

In the railway color light type traffic signal of the fourth solving means as described above, the same operational effect as that of the first solving means described above is exhibited with respect to the lighting device, that is, the light reflected by the lid is changed. By deriving the light from the light source side, the emission intensity can be automatically measured without impairing the visibility, but in addition to this, the emission intensity detection signal can be fed through the existing power feed line to feed current or feed power. It is transmitted by being superimposed on the voltage. Moreover, since the signal is digitally modulated, even if the power supply state is frequently switched due to the change of the signal display content or the like, the signal is not easily affected by the switching noise.

As a result, it is possible to perform remote measurement on the power feeding side without adding large equipment such as laying a new cable between the traffic signal and the power feeding side. Therefore, according to the present invention, it is possible to realize a railway color light type traffic signal capable of automatically remotely measuring the emission intensity with a small facility burden.

[Fifth Solving Means] A control device for a railway color light type traffic signal according to a fifth solving means (as described in claim 5 at the beginning of the application) supplies power to the light source of the railway color light type traffic signal. In the control device for a railway color light type traffic signal for controlling the above, a receiving unit that is connected to a power supply line to the light source, separates a digital modulation signal and demodulates the digital modulation signal, and digital data obtained by the receiving unit is Information processing means for processing together with power supply information for the light source.

In the control device for the railway color light type traffic signal of the fifth solving means as described above, when the railway color light type traffic signal of the fourth solving means is controlled, from the traffic signal to the power supply line. The detection signal of the emission intensity superposed and sent to the control device side is converted into digital data by the receiving means, and then processed by the information processing means together with the power supply information. If not only the emission intensity information but also the power supply information is combined, even if the emission characteristics of the light emitting element show a non-linear current-luminosity characteristic or have a characteristic of gradually changing the emission intensity over time, the existing By using a statistical processing program package or the like, the light source deterioration and other discrimination processing can be automatically performed relatively easily and accurately.

As a result, remote control can be performed by the control device and automatic detection of light source deterioration can be performed without adding large equipment such as laying a new cable between the control device and the traffic signal. It can be done reliably. Therefore, according to the present invention, it is possible to realize a railway color light type traffic signal capable of automatically remotely measuring the emission intensity with a small facility burden.

[Sixth Solving Means] A control device for a railway color light type traffic signal of the sixth solving means (as described in claim 6 at the beginning of the application) is the railway color of the fifth solving means. A control device for a light type traffic light, comprising means for determining, based on the digital data, that the light emission intensity of the light source has dropped (below a predetermined threshold value such as a preset reference light intensity) and issuing an alarm. Be prepared.

In the control device for the railway color light type traffic signal according to the sixth means, the deterioration of the light source is automatically judged and the notification is issued based on the light emission intensity information and the power feeding information. However, as described above, even if the characteristics of the light emitting element are different from those of the light bulb, accurate determination is performed.
Therefore, according to the present invention, it is possible to realize a control device for a railway color light type traffic signal that automatically remote-measures the light emission intensity and reliably notifies the maintenance personnel and the like of light source deterioration.

[Seventh Solving Means] The control device for a railway color light type traffic signal of the seventh solving means (as described in claim 7 at the beginning of the application) has the above fifth and sixth solving means. The control device for a railway color light type traffic signal, wherein the information processing means inputs the digital data at night.

In the control device for a railway color light type traffic signal according to the seventh means, the light emission intensity information detected when the sunlight is weak or absent is used for the processing such as the deterioration determination. Therefore, it is not necessary to add a special discriminating means at the time of detecting the emission intensity on the traffic signal side, and if the sensitivity of the photoelectric conversion element used there is adapted to sunlight or reflected light weaker than direct light. Since it is sufficient, there is no need to use high performance elements. Therefore, even if the cost of the control device increases slightly due to the addition of the function of the control device, the cost of the important member on the signal side, which is installed in a larger number than the control device, generally decreases. Can be reduced.

As a result, the determination of deterioration, etc., which progresses slowly based on aging, can be realized by relatively inexpensive parts and a simple circuit configuration. Therefore, according to the present invention, it is possible to realize a control device for a railway color light type traffic signal that suppresses an increase in cost of the railway color light type traffic signal that can automatically measure the emission intensity.

[Eighth Solving Means] A railway color light type traffic signal, an illuminating device thereof, and a control device of the eighth solving means are
(As described in claim 8 at the beginning of the application), the above fifth to seventh aspects
A control device for a railway color light type traffic light of the solution means of
An outdoor illuminance detecting unit for detecting an outdoor illuminance is provided, and one or both of a power supply voltage and a power supply current to the light source according to the illuminance in a predetermined time zone such as nighttime based on the illuminance information and time information. It also controls to reduce.

In the control device for the railway color light type traffic signal of the eighth solving means, since the light emission intensity information is processed together with the power feeding information, the power feeding state such as the power feeding voltage and the power feeding current changes, Even if the change in light emission intensity due to that influences the deterioration determination etc., the influence part is excluded from the result of the deterioration determination etc. based on the power supply information, so the power supply state is changed unlike the case of the light bulb disconnection detection. Even so, the discrimination process and the notification of the result can be accurately performed. In consideration of the characteristics of the automatic measurement of the light emission intensity, the power supply to the light source is reduced according to the outdoor illuminance at night, etc., so that it does not look unnecessarily or waste power. .

Moreover, not only is it variably controlled according to the outdoor illuminance, but it is also bound by time information.
Even when the value of the outdoor illuminance is undesirably lowered due to an unexpected trouble or the like, sufficient power supply is maintained and a signal displaying function is secured when necessary during the daytime.
Therefore, according to the present invention, the emission intensity can be automatically adjusted easily by utilizing the automatic measurement of the emission intensity and without impairing the reliability of the signal.

[0047]

BEST MODE FOR CARRYING OUT THE INVENTION With respect to a lighting device of a colored light type signal apparatus for a railway according to the present invention, which is achieved by such a solution, a mode for carrying out this will be described.

[First Embodiment] A first embodiment of the present invention is a lighting device for a railway color light type traffic signal according to the above-mentioned solving means, wherein the light guide member has the same height as the light emitting element. It is characterized by being installed lower than that. In this case, since the light guide member is hidden between a large number of light emitting elements, there is little risk of damaging the light guide member when the light emitting unit is incorporated in the lamp or conversely removed. It is possible to realize a lighting device for a railway color light type traffic signal that can automatically measure the light emission intensity without impairing productivity and workability.

[Second Embodiment] A second embodiment of the present invention is a lighting device for a railway color light type traffic signal according to the above-mentioned solving means and embodiment, wherein the lid is received on the inner surface. The parallel light is formed in a shape that focuses on the light incident portion of the light guide member. In this case, the reflected light emitted from the light emitting element and reflected on the inner surface of the lid is received by the light guide member at the peak of any of the light emitting elements. This makes it possible to detect a larger amount of reflected light, even if a large number of light emitting elements are provided in a dispersed manner and the reflected light is insignificant.

The first and second specific embodiments of the present invention will be described below.
The second embodiment will be described. The first embodiment illustrated in FIGS. 1 to 3 embodies the lighting device of the first to third solving means described above and a signal system using the same. The second embodiment illustrated in FIGS. 4 to 5 is the fourth to eighth embodiments described above.
It also embodies the traffic light and its control device of the solution. Note that, in the drawings and the like, the same components as those of the related art are denoted by the same reference numerals, and thus the duplicated description will be omitted, and hereinafter, the differences from the conventional example will be mainly described.

[0051]

[First Embodiment] A concrete structure of a first embodiment of a colored light type traffic signal for a railcar of the present invention will be described with reference to the drawings. 1A is a cross-sectional structural view of the lamp device, and FIGS. 1B and 1C are side views of the light guide member. Figure 1
10A corresponds to FIG. 10A of the conventional example. Also,
FIG. 2 is a block diagram of a system including a control device, and corresponds to FIG. 13 of the conventional example.

This lamp 9 is an LED type traffic light (see FIG. 1), which is different from the conventional one (see FIG. 10) except that the optical fiber 100 (light guide member is penetrated through the center of the substrate 95. ) Is attached, and a reflection film 200 (reflection enhancing portion) is added to the center of the inner surface of the cover 94 (lid). The difference between the traffic signal and its control device will be described later.

The optical fiber 100 (see FIGS. 1 (b) and 1 (c)) has a condenser lens 10 at the tip which becomes a light entering portion.
Quartz fiber 102 on which 1 is mounted, and quartz fiber 1
02, an optical connector 103 connected to the rear end, an optical connector 104 that is paired with the optical connector 103, and a long quartz fiber 1 having one end connected to the optical connector 104.
And the optical connectors 103 and 104.
At this point, they can be separated or combined, and at the time of combination, the light received by the condenser lens 101 is transmitted to the other end side of the quartz fiber 105.

The quartz fiber 102 portion of the optical fiber 100 is a rigid one whose side peripheral surface is reinforced by a metal tube or the like and at the same time shielded from light.
A condenser lens 101 is provided in a through hole formed in the center of the substrate 95.
The optical connector 103 is fixed to the substrate 95 by screwing or bonding when the optical connector 103 comes into contact with the substrate 95. As a result, the optical fiber 100 causes the light source 96
The light incident portion 101 provided on the side serves as a light guide member directed to the lid 94.

Further, the quartz fiber 102 is formed such that its length is slightly smaller than the sum of the thickness of the substrate 95 and the height of the head of the LED 96 even when the condenser lens 101 is put together. It As a result, the optical fiber 100
When mounted on the lighting device 9, the light emitting element 96 is provided slightly lower than the light emitting element 96, and the light emitting element 96 does not protrude above the light emitting element 96 by being planted in the gaps between the light emitting elements 96 that are arranged in large numbers. It is designed not to be buried so that it is difficult to receive light in between.

Further, the quartz fiber 105 portion of the optical fiber 100 is a flexible one whose side peripheral surface is protected and shielded from light by a soft material such as plastic, and the other end extending from the optical connector 104 is , Cable 93
Further, it reaches a connection box 6 via a cable 7 and is connected to another optical connector there. As a result, the optical fiber 100 extends outside the device via the optical connector provided inside the device.

The cover 94 is formed in such a shape that a line on the inner surface of the cross section draws a smooth parabola so that all the parallel light received from the respective LEDs 96 on the inner surface is focused on the condenser lens 101. A small reflection film 2 is formed at the point of the quartz fiber 102, that is, the center of the inner surface
00 is attached. The reflective film 200 is a thin film made of plastic or the like, which is nearly transparent but has a higher reflectance than the cover 94, and by slightly reducing the transmittance of about 97% to 98% with the cover 94 alone to about 91% to 96%. As for the local reflectance, it is greatly increased to 2 to 3 times. As a result, the cover 94 having the reflection film 200 is a lid in which the reflectance of the inner surface is partially strengthened.

Next, such a lighting device 9 is a green lighting device 9g,
In the case of a railway colored light type traffic light (6 + 7 + 8) equipped with a plurality of yellow lamps 9y and red lamps 9r (see FIG. 2), the quartz fiber 105 extending from the green lamp 9g, that is, the fiber 105g for the green lamp is a junction box. 6, the quartz fiber 105 extending from the yellow lamp 9y, that is, the yellow lamp fiber 1
05y also reaches the connection box 6, and the quartz fiber 105 extending from the red lamp 9r, that is, the red lamp fiber 105r also reaches the connection box 6. In the connection box 6, these are connected to an optical cable 106, the optical cable 106 extends to a remote control device 2, and the reflected light received by the optical fiber 100 of each lamp 9g, 9y, 9r is The light is guided as it is to the control device 2 (control device for the railway color light type traffic signal).

The control device 2 receives the detection light sent by the optical cable 106 by a photodiode or a phototransistor to photoelectrically convert the detection light to generate a light amount detection signal D and also A / D-converts it and sends it to the control circuit 24. The photoelectric conversion unit 107 is added to each of the lamps 9g, 9y,
The detection signal D indicating the light emission intensity of the light source 96 is obtained every 9r. In addition, the control circuit 2 of the control device 2
4, a brightness information processing routine 108 is additionally installed, and the program processing of the brightness information processing routine 108 compares a preset threshold value E with the light amount detection signal D captured from the photoelectric conversion unit 107 to obtain the light amount detection signal D. The processing function is expanded so that a significant alarm signal F is output when is lower than the threshold value E. The illustration is omitted,
A buzzer, a red lamp and a message display device are also connected to the control circuit 24, and when the alarm signal F becomes significant, they are activated appropriately. As a result, the control device 2 includes means for determining that the emission intensity of the light source has decreased based on the detection signal and issuing an alarm.

The mode of use and operation of the railway signaling system of the first embodiment will be described with reference to the signal waveform example of FIG. Since the control and lighting operation when displaying a signal are the same as the conventional ones, the light emission intensity detection and deterioration detection of the light source will be described below.

A lamp 9 having an optical fiber 100 and the like is attached to each lamp box 8 of the traffic light, and an optical cable 106 is laid between the traffic light and the control device 2, and the photoelectric conversion unit 107 of the control device 2 and each of the lamps are installed. When 9g, 9y, and 9r are ready for optical transmission, in the lamp 9 driven by a significant one of the light source driving voltages Vg, Vy, and Vr, the light emitted from each LED 96 is substantially parallel to the cover 94. Of light, of which 97% to 98% passes through the cover 94 and is used for signal display. However, at the reflection film 200, only 91% to 96% of light is transmitted,
The difference is so small that it cannot be recognized by the human eye.

On the other hand, the remaining light reflected on the inner surface of the cover 94 may be diffusely reflected and diffused.
It is collected at a considerable ratio in the condenser lens 101 of the optical fiber 100. In particular, a large amount is collected from the reflective film 200.
Then, it exits the quartz fiber 105 of the optical fiber 100 and is further transmitted to the photoelectric conversion unit 107 of the control device 2 via the optical cable 106, where the optical signal is converted into the light amount detection signal D which is an electric signal. In this way, the emission intensity of the light source in the LED traffic light is detected and transmitted to the remote control device.

Then, in the control circuit 24 of the control device 2,
The light intensity detection signal D is sampled at any time by the brightness information processing routine 108, and the detection value D and the threshold value E are compared. The detected value D (see FIG. 3A) initially shows a value that is larger than the threshold value E and is about twice the value.
As the LED 96 deteriorates, it gradually decreases over several thousands of hours, so that the time when it falls below the threshold value E will come. Then, accordingly, the brightness reduction alarm signal F becomes significant at that timing (see FIG. 3B), and an alarm such as a buzzer sound is also issued. This alarm is the LE of the lamp 9.
Even when D96 deteriorates earlier than the scheduled replacement time, it is reliably emitted based on the decrease in the light amount detection signal D. In this way, the deterioration of the light source of the LED traffic light based on the detection of the emission intensity is detected by the remote control device side.

Then, with respect to the lamp unit 9 whose deterioration has been found, the light emitting unit (95 + 96) is replaced in the following manner. That is, although all the work is performed from the light transmitting direction side, first the cover 94 is removed, then the substrate 95 is removed, and the optical fiber 100 is attached to the optical connectors 103 and 104.
The light emitting unit (95+
96) is taken out. Then, in reverse order, the optical connector 104 is coupled to the optical connector 103 of another non-defective light emitting unit (95 + 96), the substrate 95 is mounted, and the cover 94 is returned.

At the site where the traffic light is installed, the lamp 9 accommodating the light emitting unit is completely replaced to replace the lamp 9
Even when the light emitting unit inside is replaced at another work place such as a factory, the same work may be performed at that work place. In either case, the portion (101 + 102 + 103) of the optical fiber 100 that is incorporated in the substrate 95 is LE
Since it does not stick out from the head or lead wire of the D96, the optical fiber 100 is safe if handled without damaging other parts such as the LED 96. In this way, even in the lamp 9 in which the optical fiber 100 is incorporated, the light emitting unit can be replaced almost in the same manner as the other lamps. Therefore, a worker such as a maintenance worker is not confused or tired, and the work can be performed easily.

[0066]

[Second Embodiment] With respect to a second embodiment of a color light type traffic signal for a railcar according to the present invention, a concrete configuration thereof will be described with reference to the drawings. FIG. 4 is a block diagram of a system in which the railway color light type traffic signal (6 + 7 + 8) and the control device 2 (control device of the railway color light type traffic signal) are connected via a cable 3.
It corresponds to FIG. 2 described above.

This signal system differs from that of the first embodiment described above in the first place.
7 is that a transmitting circuit 300 and a receiving circuit 400 are introduced instead of 7. This eliminates the need for the optical cable 106. The second difference is that the light sensor 501 and the light intensity adjustment routine 502 are added to implement the light intensity adjustment function at night. Along with this, the power source 210 and the brightness information processing routine 406 are also modified to have additional functions.

The transmission circuit 300 is for superimposing the detection signal of the emission intensity derived by the optical fiber 100 on the power supply line in the installed cable 3 and sending it to the control device 2. It is provided in the connection box 6. That is, the transmission circuit 300 (see FIG. 4) is configured to include the power supply circuit 30.
1 and quartz fiber 105 (105g, 105y, 10
5r) a photosensor 302 for converting the detected light into an analog electric signal, (photoelectric conversion means), an FM modulation circuit 303 for converting the analog signal into a digital signal, and a (digital modulation means), and the digital signal is common by electromagnetic coupling. It has a current transformer 304 (transmission means) inserted in the power supply line 6c to be superimposed on the current Ic. As a result, the transmission circuit 300 serves as a transmission unit that digitally modulates the output signal of the photoelectric conversion unit provided at the light guide destination and sends it to the power supply line to the light source.

The power supply circuit 301 includes a power supply line 6g and a power supply line 6
c, pair of power feed lines 6y and 6c, power feed line 6r
Necessary for the operation of the photo sensor 302 and the FM modulation circuit 303 by utilizing the fact that a significant drive voltage is always applied if the pair of the power supply line 6c and the power supply line 6c is combined. (See FIGS. 9A to 9C) Power is also drawn from the existing power supply line. Further, the FM modulation circuit 303 has an A / D converter, a microprocessor for generating a telegram, and an FSK modulation circuit, and periodically samples an analog signal and outputs a digital signal. Although the FM is used, the PCM system uses only the first and second frequencies having different frequencies to the extent that they can be discriminated from each other, and will be described in detail later in the description of the operation.

The receiving circuit 400 detects the current waveform of the common current Ic from the power supply line connected to the power supply line 6c via the cable 3 and converts it into a voltage signal.
And B for extracting only the first frequency component from the voltage signal
A PF 402, a binarization circuit 403 that binarizes the PF 402 according to the amplitude level, and a BPF 404 that extracts only the second frequency component from the output voltage signal of the I / V conversion circuit 401.
A binarization circuit 405 that binarizes it depending on the magnitude of the amplitude level.
The digital signal sent from the FM modulation circuit 303 via the power supply line of the common current Ic is converted into a demodulated digital signal G by the BPF 402 and the binarization circuit 403 for the first frequency component, and the second frequency The component is sent to the control circuit 24 as a demodulated digital signal H by the BPF 402 and the binarization circuit 403. As a result, the receiving circuit 400 serves as a receiving unit that is connected to the power supply line to the light source, separates the digital modulation signal, and demodulates it.

The optical sensor 501 is installed as an outdoor illuminance detecting means on a sunny place such as a roof to detect the outdoor illuminance, and the information of the detected illuminance is controlled by the control circuit 24.
It is designed to be sent to. As the power supply 210, one having a variable output function is used in place of the fixed output power supply 21, and the output voltage can be raised or lowered according to a control signal from the control circuit 24. The output voltage is also sent to the control circuit 24 as a light source drive voltage signal V.

The light intensity adjustment routine 502 is executed by the control circuit 24.
The control circuit 24 receives the time information from the clock 407 built in the control circuit 24 and the illuminance information from the optical sensor 501 by the program processing, and controls the output voltage of the power supply 210. Variable control by this,
At night when the sun is hidden, for example, from 9 pm to 3 am, the output voltage is also reduced in proportion to the decrease in illuminance at that night, and the output voltage is halved when the illuminance is zero. During the other daytime, the output voltage is fixed at the same output voltage as that of the conventional power supply 21. As a result, the control circuit 24 also performs control to reduce the power supply voltage to the light source according to the illuminance in a predetermined time zone such as nighttime based on the illuminance information and the time information.

The brightness information processing routine 406 determines the decrease of the light emission intensity of the light source and issues an alarm as described above. Instead of the light amount detection signal D, the demodulation digital signals G and H are input. Then, the discrimination processing and the like are performed based on these digital data. Further, the luminance information processing routine 406 takes in the demodulated digital signals G and H based on the time information from the clock 407 at a certain time in the night. For example, start at 10 pm and repeat every 30 minutes about 10 times. Further, at that time, the light source drive voltage signal V is also input, and the demodulated digital signals G and H are paired and stored in a memory or the like.
The data is also recorded in an appropriate data logger (not shown). Then, when performing the deterioration determination based on the characteristics of the LED (see FIG. 12), when the data for one day is accumulated, the data value indicated by the demodulated digital signals G and H and the value of the light source drive voltage signal V are The accuracy of the estimation is increased by taking a correlation and performing statistical processing every day. As a result, the control circuit 24 serves as an information processing means for inputting digital data at night and processing the digital data obtained by the receiving means together with the power supply information for the light source.

The mode and operation of the railway signaling system of the second embodiment will be described with reference to the signal waveform example of FIG. The description will be centered on the transmission / reception of the emission intensity detection signal and the adjustment of the luminous intensity at night, which are different from the first embodiment.

In the light box 8 of the traffic light, each lamp 9 (9 g,
The reflected light detected in 9y, 9r) is reflected by the quartz fiber 1
After leaving 05 (105g, 105y, 105r), it is converted into an analog electric signal by the photo sensor 302, and converted into a digital signal in the subsequent FM modulation circuit 303. This conversion process is repeatedly performed at a constant cycle. In a specific example, an analog signal is converted into 8-bit binary data by A / D conversion (VAL in FIG. 5A).
UE column), and the detection targets are lamps 9g, 9y, 9r
A 2-bit number indicating which of the two is attached (see GYR column in FIG. 5A) and redundant data for error correction are also added (ECC in FIG. 5A).
(See the column), and a sync code or the like indicating the reception start timing is also added (see the SYNC column in FIG. 5A) to generate a telegram consisting of a bit string of “0” or “1” (FIG. 5B. )), The oscillation signal of the first frequency is assigned to the “0”, and the oscillation signal of the second frequency is assigned to the “1” to generate the FSK modulation signal (see FIG. 5C). .

This digitally modulated signal is superimposed on the common current Ic via the current transformer 304,
It reaches the receiving circuit 400 of the control device 2 together with the common current Ic (see FIG. 5D). Thus, the detected LED
The emission intensity of the light source in the traffic light is transmitted to the remote control device using the installed cable 3.

In the receiving circuit 400 of the controller 2, the first and second frequency components are separated and extracted from the common current Ic,
The demodulated digital signal G becomes significant corresponding to the first frequency, that is, "0" (see FIG. 5E), and the demodulated digital signal H becomes significant corresponding to the second frequency, that is, "1" ( See FIG. 5 (f). These are mutually inverted at the time of receiving the electronic message, but since the relationship is broken if the electronic message is not transmitted, the brightness information processing routine 406
Is continuously monitored, and when there is no transmission of a telegram for a predetermined period or longer, it is determined that the transmission circuit 300 has lost the transmission function, and a device abnormality alarm other than the brightness decrease alarm signal F is generated. Get out.

At night, the demodulated digital signal G,
H is taken into the control circuit 24 of the control device 2 and the digital information is restored by the brightness information processing routine 406 (see FIG. 5 (g)), of which the 8-bit binary data part detects the emission intensity of the light source. It is used as digital data indicating a value. In this way, the emission intensity data collected by the control device 2 is accumulated together with the data of the light source drive voltage signal V, and is subjected to a predetermined statistical process or calculation on each day to determine whether or not it has deteriorated. Is done.

At night, the illuminance detected by the optical sensor 501 is also taken into the control circuit 24 of the control device 2,
The light intensity adjustment routine 502 variably controls the output voltage of the power supply 210 to an appropriate value corresponding to the illuminance. Then, the green light driving voltage Vg, the yellow light driving voltage Vy, and the red light driving voltage Vr decrease, and the driving currents of the green light device 9g, the yellow light device 9y, and the red light device 9r decrease accordingly. , The emission intensity of those LEDs 96 is weakened. Thus, at night, the light intensity is adjusted according to the brightness of the surroundings so that the signal is not too visible.

[Modification]

Although quartz fibers are used for the light guide member in the above-described embodiments, the light guide member is not limited to this, and if the light guide member can be formed and has sufficient light transmissivity, it can be made of glass. It may be plastic or the like. Further, the partial reflection enhancement of the inner surface of the lid is not limited to sticking, and may be embodied by thinly applying an appropriate adhesive or slightly vapor-depositing aluminum. Further, although the AC power source is shown as an example, a DC power source can be used in almost the same manner.

Although the relays 22 and 23 are exemplified as the power supply switching means, a semiconductor switching element or the like can be used instead of or in combination with the relays. Also,
Although the control device is integrated with the control device 2, the control device is not limited to this, and may be embodied by being divided into a plurality of cooperating units. The control circuit 24 is not limited to a single processor, and may be distributed to a plurality of computers or may be a combined system of a computer and a sequencer.
Although FSK is taken as an example of digital modulation, other communication methods such as PSK and ASK may be used as long as transmission and reception are compatible.

[0082]

As is apparent from the above description, in the lighting device of the railway colored light type traffic signal according to the first solution of the present invention, the light reflected by the lid is led out from the light source side. As a result, there is an advantageous effect that it was possible to realize a lighting device of a railway color light type traffic signal capable of automatically measuring the light emission intensity without impairing the visibility and the like.

Further, in the lighting device of the railway color light type traffic signal according to the second solution of the present invention, when the reflected light from the lid is led out from the light source side, the influence from the light source is mitigated and the light source portion is provided. Also, by making it detachable in the same direction as the lid, it was possible to realize a lamp device of a railway color light type traffic signal that can accurately and accurately measure the emission intensity without impairing workability etc. Produce an effect.

Further, in the lighting device of the colored light type traffic signal for railways according to the third solution of the present invention, a large amount of reflected light is detected when the reflected light from the lid is led out from the light source side. As a result, there is an advantageous effect that it was possible to realize a lighting device of a railway color light type traffic signal capable of accurately and automatically measuring the light emission intensity without impairing workability and the like.

Further, in the railway color light type traffic signal of the fourth solving means of the present invention, the detection signal is transmitted from the traffic signal to the power feeding side by being superimposed on the existing power feeding line. This has an advantageous effect that it is possible to realize a railway color light type traffic signal capable of automatically remotely measuring emission intensity with a small facility burden.

Further, in the control device for a colored light type traffic signal for railways according to the fifth solving means of the present invention, the detection signal sent by being superimposed on the existing power feeding line is processed in combination with the power feeding information. By doing so, there is an advantageous effect that it is possible to realize a railway color light type traffic signal capable of automatically remotely measuring the light emission intensity with a small facility burden.

Further, in the control device for a railway color light type traffic signal according to the sixth solution of the present invention, accurate discrimination is made even if the characteristics of the light emitting element are different from those of the light bulb. Thus, there is an advantageous effect that it is possible to realize a control device for a railway color light type traffic signal that automatically remote-measures the light emission intensity and reliably notifies a maintenance person or the like of light source deterioration.

Further, in the control device for the railway color light type traffic signal according to the seventh solving means of the present invention, the emission intensity information detected when there is no sunlight on the control device side is used. As a result, it is possible to avoid the use of high-performance parts and increase in circuit scale on the traffic signal side, and as a result, to suppress the cost increase of the railway color light traffic signal that can automatically measure the emission intensity. There is an advantageous effect that the control device can be realized.

Further, in the control device for a railway color light type traffic light according to the eighth solution of the present invention, the power supply to the light source is variably controlled according to the outdoor illuminance, and the time zone thereof is used as time information. The advantageous effect that the emission intensity can be automatically adjusted by using the automatic emission intensity measurement easily and without impairing the reliability of the signal. Play.

[Brief description of drawings]

FIG. 1 is a cross-sectional structural view (a) of a lamp and a side view (b, c) of a light guide member of a first embodiment of a railway colored light type traffic signal or the like according to the present invention.

FIG. 2 is a block diagram of a system including a control device.

FIG. 3 is a waveform example of the signal.

FIG. 4 is a block diagram of a system according to a second embodiment of a railway color light type traffic signal or the like of the present invention.

FIG. 5 is a waveform example of the signal.

6A and 6B are a general installation diagram and an external view of a railway color light type traffic signal and the like.

FIG. 7 is a light bulb used in a conventional railway color light type traffic signal.

FIG. 8 is a block diagram of a system using the traffic light.

FIG. 9 is an example of a waveform of the signal.

FIG. 10 is a cross-sectional structure view (a) and a side view (b) of a conventional lamp using an LED.

FIG. 11 is a circuit diagram around the LED.

FIG. 12 is a diagram showing characteristics of an LED.

FIG. 13 is a conventional railway color light type signal system using LEDs.

[Explanation of symbols]

1 track (track, railway track) 2 control device (centralized monitoring device, control device for railway color light signal) 3 cable (power supply cable, remote cable, long cable) 4 signal (electrical three-position multi-light color light) Type traffic signal, railway color light type traffic signal) 5 Support (support member) 6 Connection box (relay unit) 6g, 6y, 6r, 6c Power supply line 7 Cable (relay cable, short cable) 8 Light box (lamp installation unit) 8a Back plate (lamp installation board) 8b Hood (sunshade, sunshade, hood) 9 Lamps (lighting unit, lighting section, lamps for railway color light traffic lights) 9g Green lamp 9y Yellow lamp 9r Red lamp 21 power supply 22 relay (relay, switching means) 23 relay (relay, switching means) 24 control circuit (MPU, microprocessor, arithmetic control unit) 25 signal control routine (signal control means) 2 Common current detection circuit (disconnection detection means) 91 Frame (frame part in lamp) 92 Case (box part in lamp) 93 Cable (short cable for each lamp) 94 Cover (protective lid in lamp, translucent Lid 95 Substrate (wiring board in light device, light emitting element support member, light emitting unit) 96 LED (light emitting diode, light emitting element in light device, light source) 96a Diode (light emitting unit in light device) 96b Current limiting resistor (light device Light emitting unit) 96c diode bridge (light emitting unit in lamp) 100 optical fiber (light guide member, emission intensity detecting means, deterioration detecting means) 101 condensing lens (light receiving portion, light receiving portion) 102 quartz fiber (solid portion) 103 Optical Connector (Fixed Part) 104 Optical Connector (Detachable Part) 105 Quartz Fiber (Flexible Part) 1 5g green light absorber fiber 105y yellow light absorber fiber 105r red light absorber fiber 106 optical cable (long cable, the light emitting intensity detection means,
Deterioration detection means) 107 Photoelectric conversion unit (emission intensity detection means, deterioration detection means) 108 Luminance information processing routine (reporting means, deterioration detection means) 200 Reflective film (reflection enhancement part) 210 Power supply (variable output voltage power supply) 300 Transmission Circuit (transmission means) 301 Power supply circuit (transmission power self-sufficiency means) 302 Photo sensor (photoelectric conversion means) 303 FM modulation circuit (digital modulation means) 304 Current transformer (electromagnetic coupling element of transmission section, superimposition transmission means) 400 Reception circuit (Reception means) 401 I / V conversion circuit (current-voltage conversion circuit, digital demodulation means) 402 BPF (bandpass filter, digital demodulation means) 403 Binarization circuit (digital demodulation means) 404 BPF (bandpass filter of another band) , Digital demodulation means) 405 binarization circuit (digital demodulation means) 406 Luminance information processing routine (reporting means, deterioration detecting means, abnormality detecting means) 407 Clock 501 Optical sensor (illuminance meter, outdoor illuminance detecting means) 502 Luminous intensity adjusting routine (light emission intensity varying means) V Light source drive voltage signal (power transmission voltage signal) , Power supply information) Vg green light drive voltage Vy yellow light drive voltage Vr red light drive voltage Ic common current A current detection signal B threshold C disconnection alarm signal D light intensity detection signal E threshold F luminance decrease alarm signal G, H demodulation digital signal

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-219279 (JP, A) JP-A-50-150397 (JP, A) JP-A-9-290755 (JP, A) JP-A-10- 208192 (JP, A) JP-A-9-68937 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B61L 5/18 G08G 1/095

Claims (8)

(57) [Claims] 1. A lighting device for a colored signal system for railways, comprising: a light source provided with a plurality of light emitting elements arranged in the same light-transmitting direction; and a translucent lid surrounding the light source from the light-transmitting direction side. At
A lighting device for a railway colored light type traffic signal, comprising a light guide member provided on the light source side and having a light entrance portion directed toward the lid. 2. The light of a railway colored light type traffic light according to claim 1, wherein the light guide member extends outside the device via an optical connector provided inside the device. vessel. 3. The lighting device for a railway colored light type traffic light according to claim 1, wherein the lid has a partially-reflected inner surface. 4. A railway colored light type traffic signal comprising a light source provided with a plurality of light emitting elements arranged in the same light transmitting direction, and a translucent lid surrounding the light source from the light transmitting direction side. A light guide member having a light section directed to the lid and a light guide destination extending from the light source side to the outside of the lamp, and a signal output from a photoelectric conversion unit provided at the light guide destination are digitally modulated to the light source. A colored light type traffic signal for railways, comprising: a transmission means for transmitting to a power supply line. 5. A control device for a railway color light type traffic signal for controlling power supply to a light source of a railway color light type traffic signal, wherein a receiving device is connected to a power supply line to the light source to separate a digital modulation signal and demodulate the signal. A control device for a railway color light type traffic signal, comprising: means and information processing means for processing the digital data obtained by the receiving means together with power supply information for the light source. 6. The railway color light type traffic signal according to claim 5, further comprising means for determining that the light emission intensity of the light source has decreased based on the digital data and issuing an alarm. Control device. 7. The information processing means inputs the digital data at night.
Alternatively, the control device for the railway color light type traffic signal according to claim 6. 8. An outdoor illuminance detecting means for detecting the illuminance of the outdoors is provided, and based on the illuminance information and the time information, in a predetermined time zone such as nighttime, among the power supply voltage and the power supply current to the light source according to the illuminance. The control device for a railway color light type traffic signal according to any one of claims 5 to 7, which also performs control for reducing one or both of them.