JPS60191394A - Signal lamp apparatus - Google Patents

Abstract

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

Description

[Detailed description of the invention] 〔Technical field〕 This invention relates to a traffic signal lamp.

[Prior art]

As shown in FIG. 1, a conventional signal light device includes a lamp 2 (not shown) of a signal light device 1 that lights up each of blue, yellow, and red, for example. This signal lamp device 1 is connected to an AC power source 4 via a signal lamp switching control device 3 provided at a remote location outside the signal lamp device 1, and a timer and a logic circuit in the signal lamp switching control device 3 (Fig. (not shown) controls the blinking order and timing of each lamp 2. Normally, the operation of a plurality of signal lamps 1 installed at one intersection is controlled by one signal lamp switching controller 3.

Generally, a signal light device 1 equipped with such three lamps 2
and the signal lamp opening/closing control machine 3 are connected to four power supply lines 5 for each 11 signal lamps. Therefore, if a large number of lamps are installed, a large number of power supply lines 5 will be required.

For example, FIG. 2 shows how the power lines 5 are connected when eight signal lamps 1 are installed at an intersection 6 that is commonly seen. Figure 3 also shows a median strip T on the road shown in Figure 2.
The figure shows a case in which a signal lamp 1 is added to the signal lamp 1 (however, in FIG. 3, the four power supply lines 5 are represented by one line for the sake of simplicity). In either case, signal lamp 1
The connection of the multiple power sources m5 between the signal lamp opening/closing control machine 3 and the signal lamp opening/closing control machine 3 is performed via a connection box (not shown).

As described above, in the conventional signal lamp 1, as the number of signal lamps increases, the wiring between the signal lamp 1 and the signal lamp opening/closing control device 3 becomes complicated, and therefore, complicated power distribution and cable design are required during installation. Become.

Moreover, the required total length of the power supply line 5 becomes enormous, and wiring and connection work thereof is not easy. Especially in the case of expansion,
There were problems such as the design and wiring work becoming more complicated.

[Purpose of the invention]

This invention was made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a signal lamp that can be freely controlled to open and close using only two power supply lines.

[Structure of the invention]

The present invention, which achieves the above object, is a signal lamp device comprising a control means consisting of a lamp opening/closing switch element and its control section in a signal lamp case containing a built-in lamp.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 shows the internal configuration of one signal lamp. The lamps 10a, 10b, and 10c shown in the figure are installed in the case 10d of the signal lamp 10, and are connected to the power supply line 11 to display blue, yellow, and red, respectively, when lit. Reference numeral 12 denotes a signal lamp opening/closing control machine as a control means provided in the case 10d of the signal lamp 10, and switch elements (for example, those using TRIAC) 12a are connected to the power supply line 11 and the lamps 10a, 110b, and 10C, respectively. , 12b, 12C, and a control section 12d that controls the oNeoFF of each of these switching elements 12a, 12b, 12c according to a command signal transmitted via the power line 11. 13 is a transmitting circuit connected to the power supply line 11, 14 is a receiving circuit, and how many times is this transmission/reception 18
The communication data as command signals transmitted and received by the signal lamps 13 and 14 include, for example, the number of the signal lamp 10 (identification number when there is a plurality of lamps), the blinking order and timing of each lamp 10a, 10b, 10c, and the like.

Note that 15 is a block filter, which is inserted into the power supply line 11 during actual operation to prevent interference to others.

3- Details of the transmitting and receiving circuits 13 and 14 will be explained below with reference to FIGS. 5 and 6.

FIG. 5 shows an example of a block diagram of the transmitting circuit 13.

In the figure, 13a is a reference carrier wave oscillation circuit that outputs a carrier wave. Reference numeral 13b denotes a differential encoding circuit that differentially encodes data such as the above-mentioned blinking order, which is input from a command device (not shown) using this carrier wave as a clock signal. 130 is a modulation circuit which converts the carrier wave from the reference carrier wave oscillation circuit into, for example, two-phase P by the output signal from the differential encoding circuit 13b.
It performs SK (-ift keyirg) modulation. 13d amplifies the modulated carrier wave with an amplifier equipped with a matching transformer, and connects the power supply 4m1 via the matching transformer.
Superimpose on 1.

FIG. 6 shows an example of a block diagram of the receiving circuit 14. In the figure, 141L is an amplifier equipped with a matching transformer, and the modulated wave outputted from the amplifier 13d of the transmitting circuit 13 is inputted from the entire power supply line 11 through the matching transformer and amplified. 14b is a reference carrier wave configurable circuit, and the amplifier 1
A carrier wave is generated from the output signal 4- of 41L. 14C is a demodulation circuit that performs, for example, two-phase PSK demodulation, and 14d is a differential decoding circuit that receives the output from the demodulation circuit 14C and the carrier output generated from the reference carrier generation circuit. The differentially decoded signal is output to a control section 12d provided in the signal lamp opening/closing controller 12.

Next, the operation will be explained based on the above configuration.

Power supply, IJll 1 (e.g. 5.5°-2 cores, approximately 40
0m) as the communication path, the power line 1
Data communication is possible within the characteristics of 1. This power line 11
The carrier wave (150KT (z
~450 KHz) is superimposed.

That is, the transmission circuit 13 differentially encodes a predetermined data signal using the carrier wave from the reference carrier wave oscillation circuit 13a as a clock signal, and based on the differentially encoded pulse,
For example, the modulated signal is subjected to two-phase PSK modulation, amplified, and then superimposed on the power supply line 11 via a matching transformer. In this way, data for controlling the operation of the signal lamp device 10 is transmitted using the power supply line 11 as a communication line. In this case, transmission is possible up to about 400 m, which is sufficient for data communication to each signal lamp at an intersection.

This data is received only by the receiving picture 14 of the signal lamp 10 with the corresponding number. Then, the signal lamp 10 with the corresponding number
The receiving circuit 14 amplifies the modulated wave inputted through the matching transformer, and then regenerates the original carrier wave by the reference carrier wave generating circuit 14b.

The regenerated carrier wave and the output signal of the amplifier 14a are demodulated by a demodulation circuit 14C and input to a differential decoding circuit 14d. The differential decoding circuit 14d inputs the regenerated carrier wave as a clock signal, differentially decodes the demodulated signal, and
It is output to the control section 12d.

In addition to the above-mentioned unidirectional communication, the carrier frequency can be set to 2.
waves (e.g. 490.2KHz and 245.8KHz)
Bidirectional communication is also possible by using them simultaneously.

The blinking of the lamps 10a, 10b, and 10C of the signal lamp device 10 is controlled based on the communication data sent as described above. That is, the received data is input to the control unit 12d of the signal lamp opening/closing controller 12 provided inside the case 10d of each of the plurality of signal lamps 10 at the intersection, and the control unit 12d controls the switch elements 12 a + 12 b , 1
2 Controls the opening and closing of c.

Each of the multiple signal lights 1 installed at the intersection in this way
0 can be controlled in conjunction with each other via respective built-in opening/closing controllers 12.

The wiring between multiple signal lamps is, for example, when eight signals are installed at a commonly seen intersection 6 as shown in Figure 7.
Furthermore, as shown in FIG. 8, in any case where a median strip 7 is provided on the road shown in FIG. Book Den i
This is possible with only line 11.

Incidentally, as shown in FIG. 9, the lamps 10a, 10b, 1
0C to the power supply line 11 and the respective switch elements 12al12b via the decorative transformer 16.

12C, it is possible to reduce the current value flowing through the power supply line 11, and the lamp 10a.

For 7-10b and 10C, those with a small voltage value can be used.

[Effects] As explained above, this invention is provided with a control means that operates in response to a lamp blinking command signal transmitted from the outside inside each signal lamp, so that it can be used regardless of the number of signal lamps. It is now possible to wire between signal lamps using only two power lines, eliminating the need for power distribution and cable design during installation. In addition, since the required total length of the power supply line is significantly reduced, wiring and connection work becomes easier regardless of whether it is a new installation or an expansion.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the conventional connection between a signal lamp and a signal lamp opening/closing control device, Fig. 2 is a diagram showing the conventional power wiring for multiple signal lamps installed at an intersection, and Fig. 3 2 is a diagram showing the wiring configuration when a signal lamp device is further added to the one shown in FIG. 2, FIGS. 4 to 9 show an embodiment of the present invention, and FIG. Figure 5 is a block diagram of the external circuit, Figure 6 is a block diagram of the receiving circuit, and Figure 7 shows the configuration of the external circuit connected to this circuit. Figure 8 is a diagram showing the wiring of several signal lamps, and Figure 8 is a diagram showing the wiring when additional signal lamps are added to the one shown in Figure 7.
FIG. 9 is a diagram showing another example of connection between the lamp and the power line. 10... Signal lamps 10a, 10b, 10cm=-i imp 12...
... Signal lamp opening/closing controller procedure amendment June 15, 1980 Mr. Kazuo Wakasugi, Commissioner of the Patent Office 1, Indication of the case 1981 Patent Application No. 45392
No. 2, Title of the invention Signal lamp 3. Relationship with the case of the person making the amendment Applicant's address (residence) Name Hidetatsu Iwaki Representative 6 Number of inventions increased by amendment 8, Contents of the amendment (1) Patent claims Correct the range as shown in the attached sheet. (2) This data in page 7, line 4 to line 6 of the specification,
...'' of the signal lamp device 10 is corrected to ``The data sent to the power supply line 11 in this way is received by each receiving circuit 14 in the plurality of signal lamp devices 10.''. (3) On page 7, line 13, “differential composite” and “control unit 1
2d", add the following sentence. "The communication data is regenerated. Since this regenerated communication data includes the identification number of the signal lamp device 10 as described above, the reception circuit 14 of the signal lamp device specified by this identification number Data indicating the blinking order and timing of 10a, 10b, and 10C.'' (4) Correct Figure 4 as shown in the attached sheet. Scope of claims

Claims (1)

[Claims] A signal lamp characterized in that a control means comprising a lamp opening/closing switch element and an opening/closing control section for the switch element operated in response to a command signal transmitted from the outside is provided in a case containing a lamp.