JPH08124039A - Safety lamp - Google Patents

Abstract

PURPOSE: To provide a safety lamp of a simple and inexpensive constitution which can be automatically turned on at night to show the dangerous areas of a site of contruction, etc., and also can be continuously connected to other electrical equipments. CONSTITUTION: Two pairs of electric wires 11a, 11b, 11c and 11d are set in parallel to each other, and a power supply plug 12 is placed at one of both sides of a pair of wires 11a and 11d. Then th plug 12 is unified with a lighting control circuit 22. At the same time, two sockets 13 and 14 are placed in parallel to each other at the other side of the pair of wires 11a and 11d. Then light emitting diodes 20 are connected in series to another pair of wires 11b and 11c formed between the plug 12 and both sockets 13 and 14 and then connected to the circuit 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a safety light for indicating a dangerous area such as a construction site at night and hanging it on a building or the like as an electric decoration.

[0002]

2. Description of the Related Art Conventionally, a safety light has been used as an electric decoration to display a dangerous area or a restricted area such as a construction site, an accident site, a traffic crackdown, or a drive-in, a store, a facility, etc. Techniques for turning on and off the light of a lamp are known. In order to recognize a predetermined range, this safety light has light bulbs arranged at regular intervals on the cord, and bimetal is placed on the light bulb itself or the light bulb mounting part to make it blink, or one end of the cord is connected to a blinking circuit. ,
I tried to make all the light bulbs blink.

[0003]

The safety light as described above is constructed so as to be used only for blinking the light bulb, and a floodlight is arranged to brighten the work place at a construction site or the like. When using a tool such as a drill or the like, electric power is supplied from another power source through wiring. Therefore, two or more wirings are entangled with each other and the work site becomes complicated. Further, when a light emitting diode is used instead of the light bulb in order to reduce the power consumption of the safety light, an adapter is required because a DC power source is required.

[0004]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. That is, arrange two pairs of wires in parallel,
One plug for power supply is arranged on one side of the pair of electric wires, a lighting control circuit is integrally provided on the plug, and two sockets are arranged in parallel on the other side of the electric wire. A light emitting element is connected in series to each of the other pair of electric wires in between, and is connected to the lighting control circuit.

[0005]

Next, the operation will be described. That is, when the plug is connected to the power supply and the brightness becomes darker than the set brightness, the light sensor is turned on and the lighting control circuit causes the light emitting element to blink. Then, another safety light can be continuously extended from one socket, and another electric device can be connected and operated from the other socket.

[0006]

EXAMPLES Next, examples will be described. FIG. 1 is a perspective view of an embodiment in which a safety light of the present invention is connected to give a warning at a fixed length, FIG. 2 is a wiring diagram of a four-wire type safety light, and FIG. 3 is an electric circuit diagram of the same. 4 is a wiring diagram of a three-wire type safety light.

Describing from the overall configuration in FIG. 1, the safety light A of the present invention is installed between the poles 10 and 10 in order to distinguish it from a dangerous area at a construction site, an accident site or the like.
The safety lamp A is connected to a cord 11 with electric bulbs 9, 9 ... At predetermined intervals, and at one end of the cord 11, a plug 12 having a lighting control circuit 22 described later is provided,
The plug 12 is connected to a 100 volt power outlet. Sockets 13 and 14 are provided at the other end of the cord 11, and the plug 12 of another safety light A is connected to the socket 13 so that it can be extended. The machine 15 and electric tools can be connected and used.

The circuit configuration of the safety light A is shown in FIGS.
As shown in, the cord 11 has four electric wires 11a and 11b.
11c and 11d are arranged in parallel, the electric wire 11a and the electric wire 11d are for supplying a 100-volt power source, and the electric wire 11b is
And the electric wire 11c are for lighting the light emitting element. The electric wire 11b
The electric wire 11c and the electric wire 11c are spaced at predetermined intervals, and two light emitting diodes 20 as a light emitting element and a resistor 21 between them.
A large number (about 30) of electric bulbs 9 are connected in series. In one electric bulb 9, the light emitting diodes 20 and 20 are arranged above and below the substrate 16, the resistor 21 is arranged on one side, and the other three electric wires 11a and 11d and 11b or 1 are provided.
Together with 1c, the resin is integrally formed into a spherical shape. Then, the light emitting diodes 20, 20, ... On the electric wire 11b.
, And the light emitting diodes 20, 20, ... On the electric wire 11c are not arranged in the same light bulb 9, but are arranged alternately, and when they are blinked, they are alternately blinked one by one. There is. Hooks 8 are provided on the cords 11 on both sides of the electric light bulb 9 so that the cords 11 can be locked to the hooks 8 when a part of the safety lamp A is hooked or locked.

A lighting control circuit 22 is integrally provided in the plug 12, and specifically, a resistor, a diode, a capacitor, a transistor, and a light receiving sensor (phototransistor) 23 are connected on a substrate 24 as shown in FIG. To form a multi-vibrator, and the photo sensor 23 turns
By turning on and off the left and right transistors alternately, the light emitting diode 20 and the electric wire 11c on the electric wire 11b are turned on.
The upper light emitting diodes 20 are made to blink alternately.

The plug 13 has a light emitting diode 2
A current control circuit 25 for controlling the current flowing to 0 is integrally provided, and a diode 27 for rectification, a resistor 28 for current adjustment, and a smoothing capacitor 29 are provided on a substrate 26. Then, the fuses 30 and 31 are connected in series to one of the electric wires connected to the plugs 13 and 14, respectively, to protect the fuses from overcurrent.

As described above, the safety light A has the electric wires 11a and 11b.
・ By wiring 11c and 11d in parallel, the electric wire 11a and the electric wire 11d can be further extended for power supply, and if the plug 12 is inserted into a 100-volt outlet, the light receiving sensor 23 detects the brightness. Then, when it becomes darker than the set brightness, it is turned on, the lighting control circuit 22 is activated, and the electric bulbs 9 ...
The electric bulbs 9 ... on c are alternately turned on and off. By inserting the plug 12 of another safety light A into the socket 13 of the safety light A and connecting the same, the extension can be further extended and the blinking can be similarly performed. Further, other electric equipment can be connected to the socket 14 to operate.

As another embodiment, a safety light B can be formed as shown in FIG. That is, the plug 34
The plug 34 to a 100 volt power source.
An adapter 35 is connected to this, and the adapter 35 converts it into a direct current so that it can be output from the two sockets 36a and 36b. Plugs 37a and 37b can be connected to the sockets 36a and 36b, and the plugs 37a and 37b
Is connected to three electric wires 39a, 39b, 39c, and one electric wire 39b is common as a minus (plus can also be common), and the other electric wires 39a, 39c are
So that a positive voltage is supplied to the three electric wires 3
Sockets 43a and 43b on the other ends of 9a, 39b and 39c
, So that the plugs 37a and 37b of the other safety light B can be connected and extended. And the electric wire 39a
And the electric wire 39b, and the electric wire 39b and the electric wire 39c are alternately arranged with a predetermined interval, respectively.
A series of two connected in series is covered with a resin to form an electric bulb 40, and a large number of the electric bulbs 40, 40 ... Are arranged in parallel. With such a configuration, the electric bulbs 40, 40 ... Can be alternately blinked by alternately receiving a voltage from the adapter 35 to the sockets 36a, 36b.

[0013]

Since the present invention is constructed as described above, it has the following effects. That is, the 100-volt power supply supplied to ordinary households could be used as it was, and an inexpensive safety light could be constructed with a simple configuration without the need for an adapter. Also, because two output sockets are provided, the safety light can be extended continuously on one side, and electric equipment such as a floodlight can also be connected on the other side, increasing versatility. It was. Further, since the light emitting diodes are connected in series, the flowing current becomes constant, and the change in the lightness emitted by the light emitting diodes becomes small.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment in which a safety light of the present invention is connected to issue a warning with a constant length.

FIG. 2 is a wiring diagram of a four-wire security light.

FIG. 3 is likewise an electric circuit diagram.

FIG. 4 is a wiring diagram of a three-wire security light.

[Explanation of symbols]

 A Safety light 9 Electric bulb 11 Cord 12 Plug 13/14 Socket 20 Light emitting diode 22 Lighting control circuit 25 Current control circuit

Claims (1)

[Claims] 1. A pair of electric wires are arranged in parallel, one plug for supplying electric power is arranged on one side of the pair of electric wires, and a lighting control circuit is integrally provided on the plug. Two sockets are arranged in parallel on the side, and the light emitting element is connected in series to another pair of electric wires between the plug and the socket,
A safety light connected to the lighting control circuit.