JPS6035999Y2 - Photoelectric automatic flasher - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a photoelectric automatic flasher used for automatically flashing outdoor lights.

In the conventional photoelectric automatic flasher, as shown in FIG. The front surface of the light-transmitting device is covered with a translucent cover 1a of, for example, a milky white color, and the light-receiving element 4 of the photoelectric automatic blinking mechanism B receives the light transmitted through the cover 1a.

In the figure, 22 is the cover mounting screw, 23 is the terminal cover, 2
4 is a terminal cover mounting screw.

However, in such a conventional example, the light-transmitting cover la
Since the light receiving element 4 is configured to receive the light transmitted through the base 2, the light receiving element 4 not only reacts to normal incident light perpendicular to the mounting surface of the base 2, but also reacts to normal incident light that is parallel to the mounting surface of the base 2. The light receiving element 4 reacts even to the incident light,
There was a risk of malfunction due to surrounding disturbance light.

The present invention has been proposed in view of the above-mentioned points, and is a photoelectric automatic device that eliminates the risk of malfunction due to external light by allowing the light-receiving element to receive only the incident light in the required direction set for the installation. The first purpose is to provide a blinker, and the second purpose is to turn on and off the main contact for output.
By using a wire-wound magnetic holding type relay, there is no need for a holding current to hold the main contacts in the on or off state, reducing current consumption and allowing the relay to be used for short periods of time. The second purpose is to reduce the size and cost of the relay, and also to provide an operation indicator lamp to display the operating status of the photoelectric automatic blinking mechanism to facilitate inspection of the operating status. The third purpose of the present invention is to eliminate the negative influence of the photoelectric flashing mechanism on the operation of the photoelectric automatic flashing mechanism.

The present invention will be explained in detail below with reference to embodiment figures.

A is a box in which a photoelectric automatic flashing mechanism B is housed, and is waterproof by a cover 1 and a base 2, each made of an opaque synthetic leather resin molding material.

A window hole 11 is bored in the front surface of the cover 1 located at the lower side in FIG. 2, and a window cover 12 made of a transparent synthetic resin material as shown in FIG. 3 is fitted into this window hole 11 from the inside. Lighting window 3
is formed.

At the joint portion of the mounting means C formed at the rear end of the base 2, the tip of the mounting means C made of an L-shaped fitting is attached to the tightening pin 1.
3, and three screw holes 14a, 14b, 14c are formed in this joint portion in an arc shape centered around the shaft attachment portion of the tightening pin 13, and these screw holes 14a, 14c are ... have a positional relationship of 45 degrees with respect to the shark pin 13.

On the other hand, on the side of the mounting means C, the screw hole 14a...
A through hole 15 is drilled corresponding to the formation position of .
By selectively screwing and tightening the parts, the mounting direction of the box A to the construction material can be adjusted at 45 degree intervals.

Inside the box A, a photoelectric automatic blinking mechanism B constructed on a printed circuit board 10 is housed as in the conventional example, but inside the lighting window 3 there is a mechanism B as shown in FIG. An auxiliary printed circuit board 17 is arranged, and this auxiliary printed circuit board 17
The light-receiving element 4 and the operation indicator lamp 8 mounted on the respective sides are arranged so as to face the inner surface of the lighting window 3.

As shown in the figure, cylindrical holders 18 and 18 are fitted as light shielding means E on the outer periphery of the light receiving element 4 and the operation indicator lamp 8, and the holder 18 has a locking protrusion protruding from its tip. The holders 18 and 18 are installed by fitting and locking the holders 19 and 19 into the locking holes 20 of the auxiliary printed circuit board 17, and the light of the operation indicator lamp 8 is transmitted to the light receiving element by the light shielding means E made up of these holders 18. This is to prevent it from affecting 4.

FIG. 5 shows a circuit diagram of the photoelectric automatic flashing mechanism B.

The light-receiving element 4 formed of a phototransistor increases or decreases its internal resistance depending on its light-receiving state, so that the voltage across the light-receiving element 4 becomes a low voltage when receiving light and a high voltage when not receiving light.

Therefore, the terminal voltage of this light receiving element 4 is changed to the switching circuit 2.
Tr2.1 detects and shapes the waveform, and when no light is received, the output of the switching circuit 21 causes the transistors Tr2.Tr2. A trigger input is given to the first switching element S1 made of a three-terminal silicone via Tr1, and when light is received, a trigger input is given to the second switching element S2 via the transistor Tr3 by the output of the switching circuit 21.

5 is a main contact for opening and closing the load, and is configured as a contact of a two-winding magnetic holding type relay 6. In addition to the main contact 5, this relay 6 has a switching type auxiliary contact. a, 7
b, when the main contact 5 is closed, the auxiliary contact 7a side is closed, and when the main contact 5 is opened, the auxiliary contact 7b side is closed.

Further, the relay 6 has a first winding 6a and a second winding 6b,
The main contact 5 is closed by energizing the first winding 6a, and the main contact 5 is opened by energizing the second winding 6b.

Thus, these first and second windings 6a, 6b connect the auxiliary contact 7b side to the first winding 6a and the first switching element S1 in series, and connect the auxiliary contact 7a side to the second winding. An excitation circuit is configured by connecting the line 6b and the second switching element S2 in series.

Therefore, assuming that it is daytime and the auxiliary contact 6b is closed, and it becomes night and there is no longer any light incident on the light receiving element 4, the transistor Tr is turned off, so that the gate of the first switching element S1 is turned off. When a signal is applied, this first switching element S1 becomes conductive.

As a result, the excitation current of the first winding 6a flows from the auxiliary contact 7b through the circuit of the first winding 6a and the first switching element S0, closing the main contact 5 and lighting up the unillustrated load, and from the auxiliary contact 7b side. 7a side to cut off the excitation current flowing to the first winding 6b, and at this time the relay 6
Since it is of a magnetic holding type, the above contact state is maintained until the second winding 6b is next excited.

Later in the morning, when the light-receiving element 4 begins to receive the incident light again, the terminal voltage of the light-receiving element 4 decreases and the output of the switching circuit 21 becomes "L", so that the collector output of the transistor Tr3 becomes low. The signal becomes "H" and the second switching element S2 is triggered.

As a result, an exciting current flows from the auxiliary contact 7a side through the second winding 6b and the second switching element S2, turning off the main contact 5 and switching the auxiliary contact from the 7a side to the 7b side, returning to the initial state. , and the above-described operation will be repeated.

As described above, in the present invention, the cover is provided with a lighting window made of a substantially transparent material, and the light-receiving element of the photoelectric automatic flashing mechanism is placed inside the lighting window. Now only the light that enters through the window is received, and the light-receiving element does not receive light that enters from a direction other than the normal direction of incidence like ambient light, which can cause malfunctions due to ambient light. Moreover, since the connecting part between the mounting means and the box body is constructed so that the mounting angle can be freely adjusted, it is constructed so that only the light incident from the lighting window is received by the light receiving element as described above. Despite this, the box can be installed so that the lighting window faces the desired incident light direction, and the box can be installed in such a way that it receives only the required incident light without receiving unnecessary light. It has the advantage of being easy to obtain, and since it uses a tightening pin as the pivoting means, the box body can be rotated smoothly, making it easy to set the detection area. .

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of the conventional example, FIG. 2 is a perspective view of the present invention-embodiment, and FIG. 3 is a perspective view of the same window cover as above.
Fig. 4 is a perspective view of the auxiliary printed circuit board part of the same as above, and Fig. 5 is an example of the circuit of the same as above, 1 is a cover, 2 is a base, 3
is a lighting window, 4 is a light receiving element, 5 is a main contact, 6 is a relay, 6
a is the first winding, 6b is the second winding, 7a is the auxiliary contact, 7b
8 is an auxiliary contact, and 8 is an operation indicator lamp.

Claims (2)

[Scope of utility model registration request] (1) Cover and base made of non-transparent material;
In a photoelectric automatic flasher comprising a photoelectric automatic flashing mechanism completely housed in a box formed by these covers and a base, and a mounting means for attaching the box to a structure,
A lighting window made of a substantially transparent material is provided in the cover, a light receiving element of a photoelectric automatic blinking mechanism is arranged inside the lighting window, and a connecting part of the box body is tightened at the tip of the mounting means. A photoelectric automatic flasher characterized in that the box body is mounted on a structure with a shaft and the mounting angle can be adjusted freely. (2) An operation indicator lamp is disposed inside the lighting window in parallel with the light receiving element.A light shielding means consisting of a cylindrical holder is provided to block the light of the operation indicator lamp from affecting the light receiving element.
Utility model registration claim No. 1, characterized in that a locking protrusion attached to an operation indicator lamp, a light receiving element, or both and protruding from the tip of the holder is fitted into a locking hole of a printed circuit board. The photoelectric automatic flasher described in item 1.