JPS5843196Y2 - beacon light - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to a marker light for an instruction sign.

With the rapid increase in the number of automobiles in recent years, the role played by directional signs that provide accurate directions for this traffic has been highly evaluated.

However, on the other hand, there is a problem in that if this type of indicator light malfunctions and becomes unlit, it may cause a traffic accident.

Therefore, recent signage lights have been given priority consideration to prevent malfunctions, so malfunctions are becoming less common, but breakage of lamps using lamps should be avoided as the lamps have a limited lifespan. I can't.

There is maintenance work involved, and lamp breakage is constantly monitored, and after six months, for example, the lamp is replaced regardless of whether it is in good condition or not, to ensure safety.

However, since constant monitoring is not carried out, there are cases in which a broken core is reported and a replacement is required.

In view of the above, the present invention was devised to solve such problems and eliminate such drawbacks, and its purpose is to provide an economical measure to turn off main lights with low equipment costs.
Moreover, it can detect a break in the main light and automatically turn on the auxiliary light, allowing the main light to be used as a backup light to perform its function as a marker light, and can also be used until the lamp breaks. In addition, if the main light breaks, it will automatically switch to the auxiliary light, eliminating the need to rely on manual replacement operations. Another object of the present invention is to provide a marker light that can be replaced at any appropriate time, not when the main lamp is broken.

In order to achieve this purpose, the present invention includes a main light installed inside a marker light, a sub-light that lights up as an alternative when the main light is broken, a photoconductive element inside, and a heating resistor attached to the photoconductive element. A photoelectric automatic flasher has a bimetal whose contacts are connected via A time-limited relay that has an operating function and has a self-holding contact and a switching contact; an overvoltage suppressing element connected in parallel with the time-limited relay; and a switching contact of the time-limited relay that supplies power to the main light and the auxiliary light. A power supply circuit is provided, and when the main light is disconnected, the auxiliary light is automatically turned on as a substitute for the standby light.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a structural diagram showing an embodiment of a marker light according to the present invention, in which a shows a front view and a sectional view, and b shows a side view thereof.

In the figure, 1 is the main body of the marker light, 2 is the front frame of the main body 1,
A display board 3 displaying a speed limit of 50, for example 5Q km, is attached to the front frame 2.

In the marker light attached to the main body 1, a fluorescent lamp 6a, which is a 40W main light, for example, and a fluorescent lamp 6, which is a 30W auxiliary light, are mounted on lamp holders 4a, 4b, and 4C.
b, as well as fluorescent lamp ballasts 5a, 5b and Cds.
It is constructed by incorporating a photoelectric automatic flasher 7 and a time-limited relay (delay relay) 8.

FIG. 2 is a circuit diagram showing an example of a photoelectric automatic flasher used in the present invention, and shows an example of the internal configuration of the photoelectric automatic flasher 7 shown in FIG.

In order to facilitate understanding of the present invention, this will be explained first.

In the figure, LE indicates the power supply side, and LD indicates the load side.

Cds is a photoconductive element made of cadmium sulfide whose resistance value changes depending on the incident light beam, and when the surrounding area becomes bright, the CDS
Since the resistance value of is lowered and current flows through the heating resistor R, the bimetal BM is bent as shown by the dotted line, the contact S is opened, and the photoelectric automatic flasher is turned off.

Then, when the surroundings become dark, Cds exhibits a high resistance, so no current flows through the heating resistor R, so it is not heated, the bimetal BM stands upright as shown in the figure, the contact S is closed, and the rechargeable automatic flasher is turned off. transition to the on state.

Now, the present invention is implemented as follows.

FIG. 3 is a wiring diagram showing the circuit configuration of one embodiment of the marker light according to the present invention.

In FIG. 3, the same reference numerals as in FIG. 1 indicate corresponding parts, 8a is a self-holding contact of the time-limited relay 8 which is delayed by the output of the photoelectric automatic blinker 7, and 8b and 8C are the switching points of the time-limited relay 8. Contact, 9 is a 100cm commercial power supply, 10 is a silicon diode varistor for overvoltage suppression, 11a
, 11b is a glow starter for a fluorescent lamp.

Here, the photoelectric automatic blinker 7 constitutes a breakage detection means for detecting that the fluorescent lamp 6a is broken and is not lit.

The power supply side of the photoelectric automatic flasher 7 is connected to an AC 100V commercial power supply 9, and the load side is connected to one end of the commercial power supply 9 via a silicon diode varistor 10 and a time relay 8. The blinker side is connected to the other end of the commercial power source 9 via its self-holding normally open contact 8a.

In addition, the 40W fluorescent lamp 6a, which is the main light, is connected to the commercial power source 9 via the normally closed side of the switching contacts 8b and 8C of the 40W gross starter 11a, the fluorescent lamp ballast 5a, and the time-limited relay 8.
It is connected to the.

Further, the 30W fluorescent lamp 6b, which is the auxiliary light, is connected to the commercial power source 9 via the normally open side of the switching contacts 8b and 8C of the 30W gross starter 11b, the fluorescent lamp ballast 5b, and the time-limited relay 8.
It is connected to the.

Next, the operation of the embodiment shown in FIG. 3 will be explained.

First, at night, an external photoelectric automatic flasher (not shown) is turned on, and along with this, commercial power 9 is supplied to the marker light, and the 40W main light is supplied through the normally closed side of the switching contacts 8b and 8C of the time-limited relay 8. The fluorescent lamp 6a is lit.

At this time, since the inside of the marker light is dark, Cds of the photoelectric automatic blinker 7 shows a high resistance, and therefore the heating resistance R shown in FIG.
Since no current flows through the bimetal BM, it is not heated, the bimetal BM stands upright, the contact S is closed, and the photoelectric automatic blinker 7 is in the on state.

However, the time-limiting relay 8 connected in series to this contact S
does not operate because it has a contraction function that responds after a scheduled delay of, for example, 20 to 30 seconds.

Then, the fluorescent lamp 6a lights up, and the photoelectric automatic flasher 7
When the area around Cds becomes bright, the contact S opens and the time-limited relay 8 does not operate, so the fluorescent lamp 6a continues to light.

Next, the operation of detecting a break in the fluorescent lamp 6a, which is the main light, and lighting the fluorescent lamp 6b, which is the auxiliary light, will be explained. Cds of the rechargeable automatic flasher 7 exhibits high resistance as described above, the bimetal BM stands upright, the contact S closes, and the rechargeable automatic flasher 7 shifts to the on state.

When the photoelectric automatic flasher 7 is turned on, the time-limited relay 8 operates slowly and maintains itself by closing the normally open contact 8a.
The switching contacts 8b and 8C switch to light up the fluorescent lamp 6b.

In this way, it is possible to detect a break in the main light and automatically turn on the auxiliary light, thereby allowing the main light to be substituted for the auxiliary light, which is a backup light.

Although the present invention has been described above using fluorescent lamps as the main light and the auxiliary light, the present invention is not limited to this, and ordinary light bulbs may also be used.

As is clear from the above description, according to the present invention, a break in the main light is detected and the auxiliary light is automatically turned on, and the main light is turned on as a backup light by using a simple configuration without using complicated means. It can be used as a substitute for an auxiliary light to perform the function of a marker light, and can even be used to break the lamp core, so it has an extremely large practical effect.

In addition, if the main light breaks, it will automatically switch to the auxiliary light, so
Since there is no need to rely on manual replacement operations as in the past, all kinds of inconveniences caused by this can be resolved, and lamps can be replaced at appropriate times rather than when the main lamp breaks. It is extremely effective in this respect.

[Brief explanation of the drawing]

FIG. 1 is a structural diagram showing an embodiment of a marker light according to the present invention;
FIG. 2 is a circuit diagram showing an example of a rechargeable automatic flasher used in the present invention, and FIG. 3 is a wiring diagram showing a circuit configuration of an embodiment of the present invention. 6 a, 6 b... Fluorescent lamp, 7...
・・Photoelectric automatic flasher, 8・・・・Time-limited relay, 8
a, 8b, 8C... Contact, 9... Power supply.

Claims (1)

[Scope of utility model registration request] It has a main light installed inside the marker light, an auxiliary light that turns on as an alternative when the main light is broken, a photoconductive element inside, and a bimetal whose contacts are connected to the photoconductive element via a heating resistor. A photoelectric automatic flasher that detects when the main light is broken and is not lit, and a self-holding contact and a switching contact that has a slow operation function that operates with a delay based on the operation of the photoelectric automatic flasher. a time-limited relay having a time-limited relay, an overvoltage suppressing element connected in parallel with the time-limited relay, and a power supply circuit that supplies power to the main light and the auxiliary light via a switching contact of the time-limited relay, A marker light characterized in that the auxiliary light, which is a backup light, is automatically turned on as an alternative when the core of the marker light is broken.