Auxiliary traffic signal and traffic signal

Abstract

To provide an auxiliary traffic signal which can be mounted to a traffic signal, and a traffic signal on which the auxiliary traffic signal is mounted, that have high visibility and can be distinguished by color even when backlight is irradiated.SOLUTION: A traffic signal 1 has an original traffic signal 2 having signal lamps 22 illuminated by light sources 21 of at least two colors of red, green, and yellow, and an auxiliary traffic signal 3 detachably mounted to the original traffic signal 2. The auxiliary traffic signal 3 has: a transmitted beam unit 33 arranged adjacent to the signal lamps 22 in the same harmonious color arrangement as the signal lamps 22 and made of a raw material having a transmissivity; an opening / closing unit that cuts off or transmits light incident on the transmitted beam unit 33 by opening and closing itself; and a sensor unit 32 that determines whether the original traffic signal 2 is the backlight. The opening / closing unit opens and closes the transmitted beam unit 33 in response to the light emitted by the light source 21 of the signal lamp 22 when the sensor unit 32 determines that the signal lamp 22 is the backlight.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an auxiliary traffic light and a traffic light, and more particularly to an auxiliary traffic light and a traffic light that are highly visible even when backlit. [Background technology]

[0002] A traffic light has been known in the past that has a closing cover that opens the closing cover of a specified signal light among the signal lights and closes the signal lights of other colors (Patent Document 1). When sunlight is incident on a signal light from the front, it is difficult to determine which signal light is on, but with this traffic light, the signal lights of colors other than the lighted signal light are closed by the closing cover, so visibility when sunlight is incident from the front can be improved.

[0003] Other traffic lights use a polishing process to create fine scratches on the glass surface of the green, yellow, and red signal lights, which improves the visibility of the signal lights by scattering and scattering sunlight even when it is incident on the front of the traffic light. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-259394 [Patent Document 2] Japanese Patent Application Publication No. 9-198598 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in both patent documents, although a certain degree of effect of improving visibility against sunlight incident from the front is expected, no effect whatsoever was achieved against the reduced visibility of traffic signals in backlight.

[0006] In recent years, the use of LEDs in traffic lights has improved visibility in backlight, but LED traffic lights have only been introduced partially, and many incandescent traffic lights remain. The problem with all types of traffic lights is that visibility is significantly reduced in backlight. There are also concerns about traffic accidents caused by the difficulty in determining the color of traffic lights in backlight.

[0007] Therefore, an object of the present invention is to provide an auxiliary traffic light that has high visibility even in backlight and allows color judgment, can be attached to a traffic light, and a traffic light to which an auxiliary traffic light is attached. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides an auxiliary traffic light that can be detachably attached to an original traffic light having a signal light that is illuminated by a light source of at least two colors: red, green, and yellow, and that has: a light-transmitting section that has the same color scheme as the signal light, is positioned adjacent to the signal light, and is made of a transparent material; an opening / closing section that blocks or transmits light that enters the light-transmitting section by opening and closing; and a sensor section that determines whether the original traffic light is backlit, and the opening / closing section opens and closes the light-transmitting section in conjunction with the light emission of the light source of the signal light when the sensor section determines that the signal light is backlit.

[0009] Furthermore, it is preferable that the opening / closing unit closes the light transmitting unit when the sensor unit does not determine that the lighting unit is backlit.

[0010] It is also preferable that the color of the light source of the lighting section is the same as the color of the light transmitting section disposed adjacent thereto.

[0011] Furthermore, when any one of the light sources of the lighting unit is flashing, it is preferable that the opening and closing unit opens and closes the light transmitting unit in conjunction with the flashing of the lighting unit.

[0012] Furthermore, the lighting unit further has an auxiliary lighting unit that represents an arrow by the light emitted from the light source, the transmitted light unit further has an auxiliary transmitted light unit in the shape of an arrow made of a transparent material, and the opening / closing unit further has an auxiliary opening / closing unit that blocks or transmits light incident on the auxiliary transmitted light unit by opening and closing, and it is preferable that the auxiliary opening / closing unit opens and closes the auxiliary transmitted light unit in conjunction with the light emitted from the light source of the auxiliary lighting unit when the sensor unit determines that the lighting unit is backlit. [Effects of the Invention]

[0013] With this configuration, the opening / closing unit opens and closes in response to the light emitted by the light source, allowing the light-transmitting unit to be visible under sunlight. This improves the visibility of the traffic light in situations where the signal lights are difficult to see due to backlight, thereby reducing and preventing traffic accidents caused by poor visibility of the traffic light. Furthermore, since the traffic light includes a sensor unit that determines whether or not the traffic light is backlit, the light-transmitting unit can be made visible when the traffic light is backlit. Furthermore, when the sensor unit does not determine that the traffic light is backlit, the light-transmitting unit closes, preventing the light-transmitting unit from being mistakenly seen when it is not needed. Furthermore, since the auxiliary traffic light is detachably attached to the primary traffic light, the auxiliary traffic light can be installed only on primary traffic lights installed in backlit locations. This allows for a traffic light with high visibility even in backlit conditions without replacing the traffic light.

[0014] In addition, the auxiliary opening / closing section opens and closes in conjunction with the light emitted by the light source, allowing the auxiliary light-transmitting section to be seen by sunlight. This allows the auxiliary traffic light to be seen, improving the visibility of the traffic light even in situations where the arrow light is difficult to see due to backlight.

[0015] According to the present invention, it is possible to provide an auxiliary traffic signal and a traffic signal that are highly visible even in backlight. [Brief explanation of the drawings]

[0016] [Figure 1]1 is a perspective view of a traffic light according to a first embodiment of the present invention; [Figure 2] 4 is a cross-sectional view of the traffic light according to the first embodiment of the present invention, with the shutter of the second signal light in a closed state. FIG. [Figure 3] 4 is a cross-sectional view of the traffic light according to the first embodiment of the present invention, with the shutter of the second signal light in an open state. FIG. [Figure 4] 1 is a cross-sectional view of an additional arrow light unit of a traffic light according to a first embodiment of the present invention with the shutter in a closed state. [Figure 5] FIG. 1 is a control block diagram of a traffic light according to a first embodiment of the present invention. [Figure 6] FIG. 10 is a cross-sectional view of a traffic light according to a second embodiment of the present invention with the shutter of the second signal light in a closed state. [Figure 7] FIG. 10 is a cross-sectional view of a traffic light according to a second embodiment of the present invention with the shutter of the second signal light in an open state. [Figure 8] FIG. 11 is a plan view of a traffic light according to a third embodiment of the present invention, with the shutter of the second signal light in a closed state. [Figure 9] FIG. 11 is a plan view of a traffic light according to a third embodiment of the present invention, with the shutter of the second signal light in an open state. [Figure 10] FIG. 10 is a front view of a traffic light according to a fourth embodiment of the present invention. [Figure 11] FIG. 11 is a front view of a traffic light according to a fifth embodiment of the present invention. [Figure 12] FIG. 13 is a front view of a traffic light according to a sixth embodiment of the present invention. [Figure 13] FIG. 13 is a front view of a traffic light according to a sixth embodiment of the present invention with an auxiliary cover closed. DETAILED DESCRIPTION OF THE INVENTION

[0017] A traffic light 1 and an auxiliary traffic light 3 according to a first embodiment of the present invention will be described with reference to Figs. 1 to 5. As shown in the figures, forward, backward, up, down, left and right arrows are defined. Traffic light 1 has an original traffic light 2, an auxiliary traffic light 3, an arrow light unit 4, an additional arrow light unit 5, and a control unit 6. Original traffic light 2 is a traffic light 1 that has been installed conventionally, and the auxiliary traffic light 3 according to this embodiment can be detachably attached to original traffic light 2.

[0018] As shown in FIG. 1 , the original traffic signal 2 has a light source 21 and three-color signal lights 22. When the light source 21 emits light, the original traffic signal 2 lights up one of the green, yellow, or red signal lights 22. Each signal light 22 may be provided with a sunshade cover 23 to suppress a decrease in visibility due to sunlight R from the front. The auxiliary traffic signal 3 of this embodiment can be attached to the original traffic signal 2 with or without the sunshade cover 23. The signal lights 22 are arranged in the order of green, yellow, and red from the left. The original traffic signal 2 has the light emission of the light source 21 controlled by the control unit 6 shown in FIG. 5 so that the specified colors are turned on at predetermined times.

[0019] The auxiliary traffic light 3 has a three-color auxiliary signal unit 31 and a sensor unit 32. The auxiliary traffic light 3 is detachably attached to the primary traffic light 2 by a locking member (not shown). The auxiliary signal units 31 are arranged in the order of green, yellow, and red from the left side to correspond to the signal lights 22. In other words, the colors of adjacent auxiliary signal units 31 and signal lights 22 are the same.

[0020] As shown in FIG. 2, the auxiliary signal unit 31 has a light-transmitting unit 33, a light-collecting unit 34, and an opening / closing unit 35. The light-transmitting unit 33 is substantially circular and made of a transparent material in either green, yellow, or red, and is disposed on the front surface of the auxiliary signal unit 31. The light-collecting unit 34 is disposed on the rear surface of the auxiliary signal unit 31 and made of a transparent material to allow sunlight R from outside to enter the auxiliary signal unit 31. The light-collecting unit 34 is provided over substantially the entire rear surface to increase the light-collecting efficiency, but may also protrude rearward in an arc shape to further improve the light-collecting efficiency. The light-transmitting unit 33 may also protrude forward in an arc shape to spread the light from the light-collecting unit 34.

[0021] The opening / closing unit 35 has a shutter 36, a drive unit 37, and a winding unit 38. The shutter 36 is made of a light-blocking and flexible material, and blocks sunlight R incident from the light-collecting unit 34, as shown by the arrow. The drive unit 37 is a stepping motor that drives the winding unit 38 to wind up the shutter 36. Figure 3 shows the shutter 36 wound up by the drive unit 37 onto the winding unit 38. This allows sunlight R incident from the light-collecting unit 34 to pass through the light-transmitting unit 33 and reach the front. In other words, the auxiliary signal unit 31 can be seen by using sunlight R incident from behind the traffic light 1.

[0022] The sensor unit 32 is an optical sensor for detecting whether the traffic light 1 is backlit or not, and is provided on the rear surface of the auxiliary traffic light 3. Backlit here means sunlight R entering from behind the traffic light 1. Any sensor can be used for the sensor unit 32 as long as it is a sensor that can detect backlit.

[0023] 1, the arrow light device 4 has an arrow light source 41 and an arrow signal light 42. In the arrow light device 4, the arrow of the arrow signal light 42 is turned on when the arrow light source 41 emits light. In the arrow light device 4, the light emission of the arrow light source 41 is controlled by the control unit 6, and the arrow light source 41 is turned on at a predetermined timing.

[0024] As shown in Fig. 4, the additional arrow light device 5 has an arrow light-transmitting section 53 made of a transparent material located on the front side, an arrow light-collecting section 54 made of a transparent material located on the back side, and an arrow opening / closing section 55. The additional arrow light device 5 is detachably attached to the original traffic light 2 by a locking member (not shown). The arrow opening / closing section 55 has an arrow shutter 56, an arrow drive section 57, and an arrow winding section 58. The additional arrow light device 5 has substantially the same configuration as the auxiliary signal section 31 shown in Fig. 2, so a detailed description will be omitted.

[0025] Next, the control of traffic light 1 will be described with reference to Fig. 5. Control unit 6 controls light source 21, arrow light source 41, drive unit 37, and arrow drive unit 52. Specifically, in addition to controlling original traffic light 2, control unit 6 controls drive unit 37 and arrow drive unit 52 based on a signal from sensor unit 32.

[0026] When the sensor unit 32 does not detect a backlit state of the traffic light 1, the control unit 6 controls the drive unit 37 and the arrow drive unit 52 so that the shutter 36 is always closed. As a result, when the traffic light 1 is not backlit, only the primary traffic light 2 functions and none of the auxiliary signal units 31 are visible.

[0027] When the sensor unit 32 detects that the traffic light 1 is backlit, the control unit 6 controls the drive unit 37 to activate the light source 21. Specifically, when the green signal light 22 is lit, the shutter 36 of the green auxiliary signal unit 31 located at the left end is opened. As a result, as shown in FIG. 3, sunlight R entering the auxiliary signal unit 31 from the light collecting unit 34 passes through the light transmitting unit 33, making the green auxiliary signal unit 31 visible. Furthermore, when the green signal light 22 is turned off, the shutter 36 of the green auxiliary signal unit 31 located at the left end is closed. As a result, as shown in FIG. 2, sunlight R entering the auxiliary signal unit 31 from the light collecting unit 34 is reflected by the shutter 36, making the green auxiliary signal unit 31 invisible. The same applies to the other yellow and red signal lights 22 and auxiliary signal units 31.

[0028] Furthermore, when the sensor unit 32 detects that the traffic light 1 is backlit, the control unit 6 controls the arrow drive unit 57 to be linked to the lighting of the arrow light source 41. Specifically, when the arrow signal light 42 is lit, the arrow shutter 56 is opened. As a result, sunlight R entering the additional arrow light device 5 passes through the interior, making the arrow light-transmitting portion 53 visible. Also, when the arrow light source 41 is turned off, the arrow shutter 56 is closed, as shown in FIG. 4. As a result, sunlight R entering the additional arrow light device 5 is reflected by the arrow shutter 56, making the arrow light-transmitting portion 53 invisible.

[0029] With this configuration, the opening / closing unit 35 opens and closes in response to the light emitted by the light source 21, allowing the auxiliary signal unit 31 to be visible by sunlight R. This improves the visibility of the traffic signal 1 even in situations where the primary traffic signal 2 is difficult to see due to backlight, thereby reducing and preventing traffic accidents caused by poor visibility of the traffic signal 1. Furthermore, since the traffic signal 1 includes the sensor unit 32 that determines whether or not the traffic signal 1 is backlit, the auxiliary signal unit 31 can be made visible when the traffic signal 1 is backlit. Furthermore, when the sensor unit 32 does not determine that the traffic signal 1 is backlit, the shutter 36 is closed, making it possible to make the light-transmitting unit 33 invisible when it is not needed. Furthermore, since the auxiliary traffic signal 3 is detachably attached to the primary traffic signal 2, the auxiliary traffic signal 3 can be installed only at primary traffic signals 2 that are installed in backlit locations. This allows for a traffic signal 1 with high visibility even in backlight without replacing the traffic signal 1.

[0030] Furthermore, the arrow opening / closing section 55 opens and closes in conjunction with the light emitted by the arrow light source 41, allowing the arrow light-transmitting section 53 to be visible by sunlight R. This improves the visibility of the traffic light 1 in situations where the arrow light device 4 is difficult to see due to backlight, thereby reducing and preventing traffic accidents caused by the difficulty in seeing the traffic light 1.

[0031] Next, a traffic light 101 according to a second embodiment of the present invention will be described with reference to Figures 6 and 7. The same components are designated by the same reference numerals and will not be described again. The traffic light 101 differs from the first embodiment in the structure of the shutter 136 of the opening / closing unit 135 in the auxiliary signal unit 131.

[0032] The opening / closing unit 135 of the traffic light 101 has a shutter 136, a drive unit 137, and a rotating shaft 138. The shutter 136 is substantially flat and has an area slightly smaller than a cross section perpendicular to the front-to-rear direction of the auxiliary signal unit 131, and is rotatable around the rotating shaft 138.

[0033] The drive unit 137 is a stepping motor that rotates based on a signal from the control unit 6 to drive a rotation shaft 138. The rotation shaft 138 is provided in approximately the center of the left-right direction of the shutter 136 so as to penetrate the shutter 136 in the up-down direction. As the rotation shaft 138 rotates, the shutter 136 rotates around the rotation shaft 138.

[0034] When sensor unit 32 does not detect backlight, control unit 6 drives shutter 136 to the closed state, as shown in Fig. 6. When shutter 136 is in the closed state, light-transmitting unit 33, shutter 136, and light-collecting unit 34 are approximately parallel. Because shutter 136 covers the cross section of auxiliary signal unit 131, sunlight R taken in from light-collecting unit 34 to auxiliary signal unit 131 is reflected by shutter 136, making light-transmitting unit 33 invisible.

[0035] When sensor unit 32 detects backlighting, control unit 6 rotates shutter 136 by 90° to an open state, as shown in Fig. 7. When shutter 136 is in the open state, shutter 136 is perpendicular to light-transmitting unit 33 and light-collecting unit 34 when viewed from above. At this time, sunlight R taken in by auxiliary signal unit 131 from light-collecting unit 34 makes light-transmitting unit 33 visible.

[0036] The additional arrow light unit 5 has substantially the same configuration as the auxiliary signal unit 131.

[0037] Next, a traffic light 201 according to a third embodiment of the present invention will be described with reference to Figures 8 and 9. The same components are designated by the same reference numerals and their description will be omitted. The traffic light 201 differs from the above-described embodiments in the structure of the shutter 236 of the opening / closing unit 235 in the auxiliary signal unit 31.

[0038] The opening / closing unit 235 of the traffic light 201 has a shutter 236, a drive unit (not shown), and a rotation shaft 238. The shutter 236 is generally flat and has an area slightly smaller than the cross section of the auxiliary signal unit 31 perpendicular to the front-to-rear direction, and is rotatable around the rotation shaft 238. As shown in FIG. 8 , the rotation shaft 238 is provided at the left end of the shutter 236 in a position that does not overlap with the light collecting unit 34 in the front-to-rear direction, and penetrates the shutter 236 in the vertical direction. When the rotation shaft 238 rotates, the shutter 236 rotates around the rotation shaft 238.

[0039] When sensor unit 32 does not detect backlight, control unit 6 drives shutter 236 to the closed state, as shown in Fig. 8. When shutter 236 is closed, light-transmitting unit 33, shutter 236, and light-collecting unit 34 are approximately parallel. At this time, sunlight R taken in by auxiliary signal unit 31 from light-collecting unit 34 is reflected by shutter 236, making light-transmitting unit 33 invisible.

[0040] When sensor unit 32 detects backlighting, control unit 6 rotates shutter 236 90° clockwise to an open state, as shown by the arrow in Figure 9. When shutter 236 is in the open state, shutter 236 is perpendicular to light-transmitting unit 33 and light-collecting unit 34. In other words, it rotates to a position where it does not interfere with sunlight R taken in by light-collecting unit 34. At this time, sunlight R taken in by auxiliary signal unit 31 from light-collecting unit 34 passes through the interior of auxiliary signal unit 31, making light-transmitting unit 33 visible.

[0041] The additional arrow light 5 has substantially the same configuration as that described above.

[0042] Next, a fourth embodiment of the present invention will be described with reference to Fig. 10. Components that are substantially the same as those in the above-described embodiments are given the same reference numerals and will not be described again. While the traffic light 1 according to the first embodiment was a horizontal traffic light for automobiles, the pedestrian traffic light 301 according to the fourth embodiment is a vertical traffic light for pedestrians.

[0043] The pedestrian traffic light 301 has an original traffic light 302 that is lit by a light source, and an auxiliary traffic light 303 that becomes visible by sunlight R when the shutter 36 is opened and closed in backlight. The auxiliary traffic light 303 has substantially the same configuration as the auxiliary traffic light 3 according to the first embodiment. When the sensor unit 32 detects backlighting of the pedestrian traffic light 301, the control unit 6 controls the drive unit 37 so that the original traffic light 302 and the auxiliary traffic light 303 are linked together. When the pedestrian traffic light 301 is lit, the control unit 6 controls the auxiliary traffic light 303 so that it becomes visible at the same time as the original traffic light 302 is lit.

[0044] With this configuration, even when the primary traffic light 302 of the pedestrian traffic light 301 is difficult to see due to backlight, the auxiliary traffic light 303 becomes visible due to sunlight R, thereby improving the visibility of the pedestrian traffic light 301. This makes it possible to reduce and prevent traffic accidents caused by the pedestrian traffic light 301 being difficult to see.

[0045] Next, a fifth embodiment of the present invention will be described with reference to Fig. 11. Components that are substantially the same as those in the above-described embodiments are given the same reference numerals and will not be described again. While the traffic light 1 according to the first embodiment was a horizontal type, a traffic light 401 according to the fifth embodiment is a vertical type.

[0046] The traffic light 401 has an original traffic light 402 that is illuminated by a light source, and an auxiliary traffic light 403 that becomes visible under sunlight R by opening and closing a shutter when there is backlight. The auxiliary traffic light 403 has substantially the same configuration as the auxiliary traffic light 3 according to the first embodiment. When the sensor unit 32 detects backlighting of the traffic light 401, the control unit 6 controls the drive unit 37 so that the auxiliary traffic light 403 becomes visible at the timing when the original traffic light 402 is illuminated.

[0047] With this configuration, even when the primary traffic light 402 of the traffic light 401 is difficult to see due to backlight, the auxiliary traffic light 403 becomes visible due to sunlight R, thereby improving the visibility of the traffic light 401. This makes it possible to reduce and prevent traffic accidents caused by poor visibility of the traffic light.

[0048] Next, a sixth embodiment of the present invention will be described with reference to Figures 12 and 13. Components that are substantially the same as those in the above-described embodiments are given the same reference numerals and will not be described again. In the traffic light 1 according to the first embodiment, the auxiliary traffic light 3 and the additional arrow light 5 are always visible, but in the traffic light 501 of the sixth embodiment, the auxiliary traffic light 3 and the additional arrow light 5 are provided with an auxiliary cover 503 and a light cover 505, respectively.

[0049] When the sensor unit 32 of the traffic light 501 is not detecting backlight, the auxiliary cover 503 covers the front of the auxiliary traffic light 3, and the light unit cover 505 covers the front of the additional arrow light 5, as shown in Fig. 13. When the sensor unit 32 detects backlight and activates the auxiliary traffic light 3 and the additional arrow light 5, the control unit 6 opens the auxiliary cover 503 and the light unit cover 505, bringing them into the state shown in Fig. 12. This makes the auxiliary traffic light 3 and the additional arrow light 5 visible.

[0050] With this configuration, when the sensor unit 32 does not detect backlight, the auxiliary traffic light 3 is covered by the auxiliary cover 503 and the additional arrow light 5 is covered by the light cover 505, so the auxiliary traffic light 3 and the additional arrow light 5 are not visible and only the original traffic light 2 and the arrow light 4 are visible. This makes it possible to avoid confusion caused by the presence of two traffic lights.

[0051] The traffic signal according to the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the gist of the invention as defined in the claims.

[0052] In the above embodiment, a stepping motor is used as the driving unit 37, but this is not limitative. The shutter 36 may be opened and closed using other actuators or rotary driving mechanisms.

[0053] In the above-described embodiment, backlighting of the traffic light 1 is detected by the sensor unit 32, but this is not limiting. For example, a program preset in the control unit 6 may be used to activate the auxiliary traffic light 3 only during times when there is backlighting. [Explanation of symbols]

[0054] 1. Traffic lights 2 Original traffic lights 3 Auxiliary traffic lights 4 Arrow Lights 5 Additional arrow lights 21 Light source 31 Second Signal Light 32 Sensor section 33 Transmitted light section 34 Lighting section 35 Opening and Closing Section 36 Shutter 41 Arrow Light Source 53 Arrow light transmission section

Claims

1. An auxiliary traffic light that is detachably attached to an original traffic light having a signal lamp that is illuminated by a light source of at least two colors, red, green, and yellow, a light-transmitting portion that has the same color scheme as the signal light, is arranged adjacent to the signal light, and is made of a transparent material; an opening / closing section that blocks or transmits light incident on the light-transmitting section by opening or closing; a sensor unit that determines whether the original traffic signal is backlit, An auxiliary traffic light characterized in that the opening / closing unit opens and closes the light-transmitting unit in conjunction with the light emission of the light source of the signal light when the sensor unit determines that the signal light is backlit.

2. 2. The auxiliary traffic light according to claim 1, wherein the opening / closing unit closes the light transmitting unit when the sensor unit does not determine that the original traffic light is backlit.

3. 2. The auxiliary traffic light according to claim 1, wherein the color of the signal light is the same as the color of the adjacently arranged light-transmitting portion.

4. 2. The auxiliary traffic light according to claim 1, wherein when any one of the light sources is flashing, the opening / closing unit opens and closes the light-transmitting unit in conjunction with the flashing of the signal light.

5. The signal light further includes an arrow light device that displays an arrow by emitting light from the light source, The light-transmitting portion further includes an arrow-shaped light-transmitting portion in which a transparent material is represented in the shape of an arrow, The opening / closing unit further includes an arrow opening / closing unit that blocks or transmits light incident on the arrow light-transmitting unit by opening or closing the arrow opening / closing unit, The auxiliary traffic light according to any one of claims 1 to 4, characterized in that the arrow opening / closing unit opens and closes the arrow light-transmitting unit in conjunction with the light emission of the light source of the arrow light device when the sensor unit determines that the signal light is backlit.

6. an original traffic signal having a signal light illuminated by a light source of at least two colors, red, green, and yellow; an auxiliary signal attached to the traffic light; The auxiliary signal is a light-transmitting portion that has the same color scheme as the signal light, is arranged adjacent to the signal light, and is made of a transparent material; an opening / closing section that blocks or transmits light incident on the light-transmitting section by opening or closing; a sensor unit that determines whether the traffic light is backlit, A traffic light characterized in that the opening / closing unit opens and closes the light-transmitting unit in conjunction with the light emission of the light source of the traffic light when the sensor unit determines that the traffic light is backlit.

Images