Traffic signal controller

Abstract

To provide a traffic signal controller in which power supply to the entire device is not easily interrupted even if water inundates the lower part of a casing. [Solution] A traffic signal controller 100 comprises a control board 20 that controls the traffic signal lights 6 of the traffic signal, a power supply unit 50 that supplies power to the control board 20, a power receiving unit 170 that connects either a commercial power source S1 or an external power source S2 to the power supply unit 50, and a housing 11 that houses the control board 20, the power supply unit 50, and the power receiving unit 170, and the power receiving unit 170 is positioned in an area above the central height CT in the height direction of the housing 11, at a height position equal to or higher than that of the control board 20 or the power supply unit 50.

Description

[Technical field]

[0001] The present invention relates to a traffic signal controller that controls a traffic signal, and more particularly to a traffic signal controller that operates by receiving power from either a commercial power source or an external power source. [Background technology]

[0002] A traffic signal controller is known which is powered by power supplied from either a first power supply path corresponding to a commercial power source or a second power supply path connected to a terminal section for an external power source, and which comprises a control unit which controls the traffic signal lights, a manual changeover switch which connects either the first or second power supply path to the control unit, and a housing which accommodates these, in which the terminal section and manual changeover switch are located below the center in the height direction of the housing, and the control unit is located above the terminal section and manual changeover switch (Patent Document 1).

[0003] When the terminal section and manual changeover switch are located below the center in the height direction of the housing and below the control unit, as in the traffic signal controller in Patent Document 1 mentioned above, if water infiltrates into the lower part of the housing of the signal controller due to flooding or other reasons, the circuit parts including the terminal section and manual changeover switch will be damaged and the power supply to the entire signal controller including the control unit etc. may be cut off, resulting in significant damage from the start. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-122024 A Summary of the Invention

[0005] The present invention has been made in consideration of the above-mentioned background technology, and aims to provide a traffic signal controller in which the power supply to the entire device is not easily cut off even if water enters the lower part of the casing.

[0006] In order to achieve the above-mentioned objective, the traffic signal controller of the present invention comprises a control board that controls the traffic signal lights, a power supply unit that supplies power to the control board, a power receiving unit that connects either a commercial power source or an external power source to the power supply unit, and a housing that accommodates the control board, the power supply unit, and the power receiving unit, wherein the power receiving unit is positioned in an area above the center of the height of the housing, at a height position equal to or higher than that of the control board or the power supply unit.

[0007] In the above traffic signal controller, the power receiving device is located in an area above the center of the height of the casing, at a height equal to or higher than that of the control board or power supply device, so that even if water gets into the lower part of the casing of the traffic signal controller, it is possible to prevent the power supply to the entire device from being cut off, which would impede recovery. In other words, the basic operation of turning on the signal lamp can be maintained until the power receiving device, power supply device, control board, etc. are submerged in water. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a front view showing the internal structure of a traffic signal controller. [Diagram 2] 1A and 1B are a side cross-sectional view and an internal front view of a traffic signal controller. [Diagram 3] FIG. 2 is a block diagram illustrating a circuit configuration of a traffic signal controller. [Figure 4] FIG. 2 is a conceptual block diagram illustrating power supply wiring around a power distributor. [Diagram 5] 1A to 1D are a left side view, a plan view, a front view, and a right side view of a power receiving device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of a traffic signal controller according to the present invention will be described. Fig. 1 is a front view showing a specific internal structure of a traffic signal controller with a main door open, Fig. 2(A) is a conceptual side cross-sectional view explaining the traffic signal controller shown in Fig. 1, and Fig. 2(B) is a conceptual front view explaining the inside of the traffic signal controller shown in Fig. 1.

[0010] With reference to the drawings, the traffic signal controller 100 includes a housing 11 and an inner opening / closing plate 12 as supporting structural members, and a control board 20, a lamp driver 30, an external line terminal board 40, a power supply 50, a power supply distributor 60, an AC external input unit 70, and a power supply switch 80 as circuit element members. The control board 20, the lamp driver 30, the external line terminal board 40, the power supply 50, the power supply distributor 60, the AC external input unit 70, and the power supply switch 80 are housed in the housing 11 in a closed state. Here, the control board 20 is fixed to the inside of the inner opening / closing plate 12. The lamp driver 30, the external line terminal board 40, the power supply 50, the power supply distributor 60, and the AC external input unit 70 are fixed to a sheet metal member 14 provided on the rear side of the housing 11. The sheet metal member 14 is disposed so as to extend parallel to and be spaced apart from the rear plate 11f, i.e., the rear surface 11g, of the housing 11 and is detachably fixed to the rear plate 11f. The power switch 80 is fixed to the right side plate 11j of the housing 11 via a fastener or the like (not shown).

[0011] An additional storage space 11p is provided between the lamp driving unit 30 and the power supply unit 50, allowing for the insertion of multiple additional lamp switches having a structure similar to that of the lamp switch 31 that constitutes the lamp driving unit 30.

[0012] The housing 11 includes a main body 11a, which has an open front and is shown by a solid line in FIG. 1, and a main door 11b, which is openably and closably provided on the main body 11a and shown by a dashed line in FIG. 1. A manual operation unit 92 is fixed to the inside near the bottom of the main door 11b, and an opening 11d is formed at a position corresponding to the manual operation unit 92. The opening 11d is covered by a sub-door 16 so as to be openable and closable, and the manual operation unit 92 can be operated by opening the sub-door 16. The inner opening / closing plate 12 is supported by the main body 11a via a hinge 17, supports a control board 20 on the inside, and has an operation panel 91 on the front side. The operation panel 91 can be operated by opening the main door 11b.

[0013] Considering the vertical width H of the housing 11, the control board 20, the power supply device 50, and the AC external input unit 70 are arranged at a position higher than the center height CT located at a distance H / 2 from the bottom end of the housing 11 so that the housing 11 is submerged in water the slowest. Here, the center height CT corresponds to the center in the height direction of the housing 11. In particular, the power supply device 50 and the AC external input unit 70 are arranged in the upper end area A1 close to the top plate 11m in the housing 11. The external line terminal board 40 and the power switch 80 are arranged at a position lower than the center height CT, specifically, in the lower end area A2 close to the bottom plate 11n in the housing 11. The lamp drive unit 30 and the power distributor 60 are arranged at an intermediate position lower than the power supply device 50 and the AC external input unit 70 and higher than the external line terminal board 40 and the power switch 80 in the housing 11. As a result, the power receiving device 170, which is the AC external input unit 70, is disposed at a height position equal to or higher than that of the control board 20 or the power supply device 50 in the housing 11. Here, "equal or higher" is determined based on the lower end position of the object being compared. That is, the lower end position of the power receiving device 170 is the same as the lower end position of the control board 20 or the power supply device 50, or is higher than the lower end position of the control board 20 or the power supply device 50. Strictly speaking, the lower end of the power receiving device 170 is slightly lower than the lower end of the power supply device 50, but it can be said that the power receiving device 170 is disposed at a height position approximately equal to that of the power supply device 50. Note that the power supply distributor 60 is accompanied by a lamp power switch 94, and the lamp power switch 94 is disposed at a height position approximately equal to that of the power supply distributor 60. That is, the lamp power switch 94 is disposed at an intermediate position lower than the power supply device 50 and the AC external input unit 70. As described above, the external line terminal board 40 and the power supply switch 80 are disposed in a lower position within the housing 11 than the control board 20, the lamp driving section 30 (including the lamp switch 31), the power supply device 50, the power receiving device 170, and the power supply distributor 60. In other words, the external line terminal board 40 and the power supply switch 80 are disposed in the lowest position within the housing 11, and are the first to be submerged when the housing 11 is flooded. However, even if the external line terminal board 40 or the power supply switch 80 are submerged and break down, as long as the other components are not submerged, for example when operating from an external power source, the traffic signal controller 100 can perform minimum basic operations without replacing the circuits.In other words, when flooding is minor, it is possible to avoid the basic functions of the traffic signal controller 100 being lost and recovery becoming difficult.

[0014] In a specific example, the upper ends of the external line terminal board 40 and the power switch 80 are set at a high position, for example, about 20 cm or more above the bottom surface of the housing 11, but this is not limiting.

[0015] The circuit configuration of the traffic signal controller 100 will be described with reference to Fig. 3. In the traffic signal controller 100, a control board 20 controls the overall operation of the traffic signal controller 100. In addition to the manual operation unit 92, the external line terminal board 40, the lamp drive unit 30, and the power distributor 60, an optional interlocking receiving board 95 is also electrically connected to the control board 20. Although not shown in the figure, a door opening / closing determination switch is electrically connected to the control board 20, and it is possible to detect whether the main door 11b or the sub door 16 is opened or closed.

[0016] The operation panel 91 is a section that accepts operations by a user (for example, a police official or the like). For example, by appropriately operating this operation panel 91, the lighting time, date and time, each function, and the like can be set and changed.

[0017] The manual operation unit 92 is provided for manually controlling the lighting operation of the signal lamp unit 6 by the control board 20. The manual operation unit 92 accepts manual operation input from a user and outputs an instruction corresponding to the input to the control board 20, thereby enabling lighting of the signal lamp unit 6 and switching of the current display state.

[0018] The lamp drive unit 30 operates under the control of the control board 20 to drive the signal lamps 6 to a lit or extinguished state. The lamp drive unit 30 comprises multiple lamp switches 31. Each lamp switch 31 is a part that outputs a light color signal to each signal lamp 6 that makes up a traffic light (not shown), and receives a control signal from the control board 20 via an opening and closing drive board 32. The opening and closing drive board 32 is located behind the lamp switches 31, at a height equal to or higher than that of the group of lamp switches 31. The combination of the lamp switch 31 and the opening and closing drive board 32 is called the lamp drive unit 30.

[0019] The external line terminal board 40 is provided between the external device 3 and the control board 20 to enable data transmission and reception. The external line terminal board 40 is connected to an antenna, an aggregated line, a terminal line, etc. (not shown) installed outside the housing 11, and transmits and receives data to and from the external device 3 via these, and transfers the transmitted and received data to the control board 20. Specifically, the external line terminal board 40 receives detection input from a sensor and contact input from a push button box, and transmits and receives interlocking signals between the interlocking parent unit and the interlocking child unit.

[0020] The power supply device 50 has an electric circuit, receives an AC voltage of 100V from the power distributor 60, and generates a DC voltage for operating the control board 20 and the opening and closing drive board 32. In other words, the power supply device 50 generates power to be supplied to the control board 20 and the opening and closing drive board 32. A circuit for suppressing overcurrent from flowing to the output side can be incorporated in the power supply device 50.

[0021] The power distributor 60 mainly has the function of distributing power from the power supply device 50 to the control board 20 and the lamp drive unit 30. Specifically, the power distributor 60 supplies AC voltage to the power supply device 50 and receives DC voltage from the power supply device 50. The power distributor 60 supplies DC voltage to the control board 20, supplies DC voltage to the switch drive board 32, and supplies AC voltage to the lamp power switch 94. The power distributor 60 has a noise filter 61 for AC power supply, and removes noise components from the AC voltage received from the commercial power supply S1 or the external power supply S2.

[0022] The AC external input unit 70 is a part that receives power from an external power source S2 (specifically, a generator), and is also referred to as a power receiving device 170. The AC external input unit 70, i.e., the power receiving device 170, has a function of connecting either the commercial power source S1 or the external power source S2 to the power supply device 50. The AC external input unit 70 indirectly supplies AC voltage from the commercial power source S1 or the external power source S2 to the power supply device 50 via a power distributor 60. The AC external input unit 70 has an AC inlet 72a to which the output of the generator is connected, and a power switch 80 and a manual changeover switch 72b that selectively connects the AC inlet 72a to the power supply device 50.

[0023] The AC external input unit 70 is disposed so as to cover the right end of the power supply device 50. In other words, the AC external input unit 70 is disposed so as to partially overlap the power supply device 50 in the front-to-rear direction, i.e., the X direction. This makes it easy to dispose the AC external input unit 70 at a height position of the power supply device 50, and allows the power receiving device 170 and the power supply device 50 to be efficiently incorporated in the upper end area A1 of the housing 11.

[0024] The power supply switch 80 is provided between the AC external input unit 70 and the input unit 2 of the commercial power supply S1 (see FIG. 1), and supplies power from the commercial power supply S1 to the AC external input unit 70. The power supply switch 80 includes a breaker, and operates when an overcurrent is supplied from the commercial power supply S1 to the power supply distributor 60 or the like, to cut off the first power supply path PL1.

[0025] By means of the AC external input unit 70 and the power switch 80, the control board 20 is driven by DC power derived from either the first power supply path PL1 or the second power supply path PL2 and supplied via the power supply unit 50, and controls the lighting state of the signal light unit 6, which is the display state or current state of the traffic light.

[0026] 4, the power supply-related wiring around the power supply distributor 60 will be described. The power supply distributor 60 is a part that sorts power sources, and the power supply device 50 and the power supply distributor 60 are electrically connected via an AC power supply cable C2 and a DC power supply cable C3.

[0027] More specifically, the main power cable C1 from the AC external input unit 70 is connected to the first terminal T1 of the power distributor 60. That is, the power distributor 60 receives AC power (specifically, 100V AC voltage, i.e., AC voltage) from the AC external input unit 70 via the main power cable C1. This AC voltage corresponds to the commercial power source S1 or the external power source S2 shown in FIG. 3, and may not meet the standards as a power source that provides voltage to the power supply device 50 and the like due to the influence of deterioration such as high-frequency noise and waveform distortion and voltage fluctuation. Therefore, in the power distributor 60, the AC voltage input via the main power cable C1 is passed through a noise filter 61 to remove noise superimposed on the AC voltage from the commercial power source S1 or the external power source S2. The AC voltage from which noise has been removed by the noise filter 61 is output to the second terminal T2 and is supplied to the power supply device 50 via the AC power supply cable C2. The power supply device 50 generates a predetermined DC voltage from the AC voltage from which noise has been removed. The DC power supply cable C3 from the power supply device 50 is connected to the third terminal T3 of the power supply distributor 60. That is, the power supply distributor 60 receives DC power (specifically, DC voltage, i.e., direct current voltage) from the power supply device 50 via the DC power supply cable C3. The power supply distributor 60 supplies the DC voltage input via the third terminal T3 to the control board 20 via the fourth terminal T4, and supplies it to the opening / closing drive board 32 via the fifth terminal T5. In summary, the AC power once supplied from the power receiving device 170 to the power supply distributor 60 is filtered by the power supply distributor 60 and then supplied to the power supply device 50, and the DC power obtained from the AC power by the power supply device 50 is supplied to the power supply distributor 60, etc.

[0028] 2, the main power cable C1 extending from the AC external input unit 70 to the power distributor 60 is a shielded cable from the viewpoint of suppressing noise from being emitted to the surroundings. The commercial power cable C0 extending from the power switch 80 to the AC external input unit 70 is also a shielded cable from the viewpoint of suppressing noise from being emitted to the surroundings.

[0029] 5(A) to 5(D), in the AC external input unit 70, an AC inlet 72a is fixed to a left side member 75a of a case-like frame member 75, and a manual changeover switch 72b is fixed to a front member 75b of the frame member 75. The manual changeover switch 72b is a toggle switch, and connects either the first power supply path PL1 or the second power supply path PL2 shown in FIG. 3 to the power distributor 60. The AC inlet 72a is a terminal portion for supplying external power, and is a portion for connecting a plug or socket provided at the end of a cable extending from a commercially available external power source S2 having an external power supply function such as a generator, for example, in the event of a power outage due to a disaster. The manual changeover switch 72b is a switch that can be switched by manual operation, and specifically, the connection path of the wiring is switched by moving an operating lever 73a to either one of two switching positions (for example, up and down in FIG. 5(A)). A first power supply path PL1 and a second power supply path PL2 shown in FIG. 3 are connected to a pair of contacts of the manual changeover switch 72b. One of the power supply paths PL1 and PL2 is selected by the manual changeover switch 72b, and the power is supplied to the control board 20 via the power distributor 60 and the power supply device 50. Specifically, when the operation lever 73a is moved to the upper second position P2 shown by the solid line, the second power supply path PL2 shown in FIG. 3 is selected, and external power is supplied from the AC inlet 72a, and when the operation lever 73a is moved to the lower first position P1 shown by the dashed line, the first power supply path PL1 shown in FIG. 3 is selected, and commercial power is supplied from the power switch 80. The orientation and operation of the manual changeover switch 72b are set so that the side that falls due to gravity, that is, the stable lower position, is the "commercial AC" side used during normal operation.

[0030] The lamp 73d and the fuse 73e are fixed onto a left side member 75a of a frame member 75 shared with the AC inlet 72a etc. The lamp 73d is turned on when the operating lever 73a of the manual changeover switch 72b is in the upper second position P2, that is, when an external power source is being supplied.

[0031] A metal fitting 77a extending in the X direction from the lower right end of a front member 75b of the frame member 75 is provided for fixing the AC external input unit 70 to the right side plate 11j of the housing 11 with a bolt (not shown), and a metal fitting 77b extending in the -X direction from the center of the back surface of the frame member 75 is provided for fixing the AC external input unit 70 to the sheet metal member 14 with a bolt (not shown).

[0032] Returning to FIG. 2, the DC power supply cable C3, which is one of the two power supply cables connecting the power supply device 50 and the power distributor 60, is drawn out from the right end portion of the power supply device 50, passes through a gap GA1 between the power receiving device 170 and the power supply device 50, passes through a gap GA2 provided between an upper end 70t of the power receiving device 170 and the top plate 11m of the housing 11, and extends to the back of the power receiving device 170. Here, the upper end 70t of the power receiving device 170 means the upper end surface of the main body of the frame member 75 of the power receiving device 170, and is considered excluding the fixing metal fittings 77b that do not interfere with the wiring. The DC power supply cable C3 extends to the gap GA3 between the sheet metal member 14 and the back surface 11g of the housing 11 through a first cutout hole H1 of the sheet metal member 14 formed behind the power receiving device 170, and is drawn out to the front side through a second cutout hole H2 of the sheet metal member 14 formed near the power distributor 60. By arranging the DC power supply cable C3 behind the sheet metal member 14, it is possible to make it difficult for noise to be picked up from the surroundings, and the DC power supply cable C3 can be arranged by utilizing the gap GA2, which makes it easier to handle the DC power supply cable C3.

[0033] The AC power supply cable C2, which is the other of the two power supply cables connecting the power supply device 50 and the power distributor 60, extends into the gap GA3 between the sheet metal member 14 and the rear surface 11g of the housing 11 through a third cutout hole H3 of the sheet metal member 14 formed near the power supply device 50, and is drawn out to the front side through a fourth cutout hole H4 of the sheet metal member 14 formed near the power distributor 60. By arranging the AC power supply cable C2 behind the sheet metal member 14, it is possible to make it less likely to pick up noise from the surroundings, and the arrangement, i.e., handling, of the AC power supply cable C2 becomes easier.

[0034] A method of using the traffic signal controller 100 having the AC external input unit 70 will be described. For example, when a power outage occurs during a disaster, the user opens the main door 11b and connects the plug of the external power source S2 (not shown) to the AC inlet 72a. Then, the user connects the manual changeover switch 72b to the second power supply path PL2 (second position P2 shown in FIG. 5(A)). This allows the traffic signal controller 100 to receive power from the external power source S2. Here, even if the upper end of the external line terminal board 40 is flooded due to a flood, for example, as long as AC power is supplied from the AC external input unit 70 and the power supply unit 50 and the control board 20 are functioning, the minimum function of the traffic signal 200 is exhibited, and the signal lamp 6 can be turned on in blue, yellow, and red in sequence to display the steps. In other words, when the flooding is relatively minor, such as when only the lower part of the traffic signal controller 100 is submerged, the basic function of the traffic signal controller 100 can be avoided from being lost.

[0035] The plug and cable of the external power source S2 can be led into the housing 11 through an opening that is specially provided in the housing 11 and can be opened and closed, even if this means temporarily opening the main door 11b.

[0036] The traffic signal controller 100 of the embodiment described above comprises a control board 20 that controls the signal lamp 6 of the traffic signal 200, a power supply unit 50 that supplies power to the control board 20, a power receiving unit 170 that connects either a commercial power source S1 or an external power source S2 to the power supply unit 50, a power distributor 60, and a housing 11 that accommodates the control board 20, the power supply unit 50, the power receiving unit 170, and the power distributor 60, and the power receiving unit 170 is positioned in an area above the central height CT in the height direction of the housing 11, at a height position equal to or higher than that of the control board 20 or the power supply unit 50.

[0037] In the above traffic signal controller 100, the power receiving device 170 is disposed in an area above the center height CT in the height direction of the casing 11, at a height position equal to or higher than that of the control board 20 or the power supply device 50, so that even if water inundates the lower part of the casing 11 of the traffic signal controller 100, for example, by connecting an external power source S2, it is possible to prevent the power supply to the entire device from being cut off, which would hinder recovery. In other words, the basic operation of turning on the signal lamp 6 can be maintained until the power receiving device 170, the power supply device 50, the control board 20, the power distributor 60, etc. are submerged in water.

[0038] The traffic signal controller 100 further includes a power switch 80 provided between the power receiving device 170 and the input unit 2 of the commercial power source S1, and the power switch 80 is disposed in a position lower than the control board 20, the power supply device 50, and the power receiving device 170 within the housing 11. If the power switch 80 is submerged first, there is a possibility that the commercial power source S1 will be cut off, but with regard to the connection of the external power source S2 to the power receiving device 170, it is possible to avoid or delay the inundation of the power receiving device 170, and it is possible to prevent interruption of switching to the external power source S2.

[0039] The present invention is not limited to the above-described embodiment, and can be embodied in various forms without departing from the spirit and scope of the present invention.

[0040] Although the power supply cables C2 and C3 are not shielded cables, they may be shielded cables covered with a conductive ground sheath or tube.

[0041] The power supply cables C2 and C3 do not need to be routed behind the sheet metal member 14, but can be routed on the front side of the surface of the sheet metal member 14 so as to avoid components such as the lamp driver 30.

[0042] The power supply switch 80 does not necessarily have to be disposed in the lower end region A2, and can be disposed, for example, at a height position equal to or higher than that of the power supply distributor 60. In this case, it is possible to suppress the early occurrence of the effects of submersion when the commercial power supply S1 is used. [Explanation of symbols]

[0043] 2...input section, 3...external device, 6...signal lamp, 11...housing, 11a...main body, 11b...main door, 11d...opening, 11f...rear panel, 11m...top panel, 11n...bottom panel, 12...inner opening / closing plate, 14...sheet metal member, 20...control board, 30...lamp drive section, 31...lamp switch, 32...opening / closing drive board, 40...external line terminal board, 50...power supply unit, 60...power distributor, 61...noise filter, 70...AC external input section, 170...power receiving device, 70t...upper end, 72a...AC inlet, 72b...manual changeover switch, 73a...operation lever, 73d...lamp, 75...frame member, 75a...left side member, 75b...front member, 80...power switch, 91...operation panel, 92...manual operation section, 94...light power switch, 100...traffic signal controller, 200...traffic signal, A1...upper end area, A2...lower end area, C0...commercial power cable, C1...main power cable, C2...AC power supply cable, C3...DC power supply cable, GA1,GA2,GA3...gap, PL1,PL2...power supply path, S1...commercial power supply, S2...external power supply

Claims

1. A control board for controlling a traffic light; a power supply device for supplying power to the control board; a power receiving device that connects either a commercial power source or an external power source to the power supply device; A power switch provided between the power receiving device and an input unit of the commercial power supply; A light switch that operates under the control of the control board and drives the signal light to a lighted or unlighted state; a power distributor that distributes power from the power supply device to the control board and the light switch; an external line terminal board provided between an external device and the control board; a housing that accommodates the control board, the power supply device, the power receiving device, the power supply switch, the light switch, the power supply distributor, and the external line terminal board; Equipped with the power receiving device is disposed in a region above a center in a height direction of the housing with a lower end as a reference, and at a height position equal to or higher than that of the control board or the power supply device, the power switch is disposed at a position lower than the control board, the power supply device, and the power receiving device, based on a lower end thereof; the external line terminal board is disposed at a position lower than the control board, the power supply device, the power receiving device, the light switch, and the power distributor, based on a lower end thereof; The power receiving device is disposed in an upper end region of the housing so as to partially overlap the power supply device in a front-rear direction. Traffic signal controller.

2. the external line terminal board and the power switch are disposed in a lower end region of the housing.

2. A traffic signal controller as claimed in claim 1.

3. The power distributor is disposed at a lower position than the control board, the power supply device, and the power receiving device, based on a lower end thereof.

2. A traffic signal controller as claimed in claim 1.

4. A wiring is provided in the gap between the upper end of the power receiving device and the upper wall of the housing.

2. A traffic signal controller as claimed in claim 1.

5. the power supply device and the power distributor are electrically connected via a power supply cable; The AC power once supplied from the power receiving device to the power distributor is filtered by the power distributor and then supplied to the power supply device, and the DC power obtained from the AC power supply by the power supply device is supplied to the power distributor.

2. A traffic signal controller as claimed in claim 1.

6. The main power cable extending from the power switch through the power receiving device to the power distributor is a shielded cable.

6. A traffic signal controller as claimed in claim 5.

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