JP2002352682A - Automatic flasher unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent trouble that a set light receiving direction is deviated after installation and hence, a making and breaking function for connection does not correctly work. SOLUTION: This automatic flasher unit is provided with a switch function block for making and breaking connection between a terminal block for a power source and a terminal block for a control load by the use of circumferential external light, and a base 3 formed into a box-like shape with its front face opened, and constituting a container for housing them. For the flasher unit, a support part 35 projecting rearward is formed on the rear face of the base 3, and a screw insertion hole 35a is formed in it for inserting a mounting screw by putting the surface of a plate-like mounting fitting 6 on the surface of the support part 35 to screw-fasten both of them with a screw hole 6a of the mounting fitting 6. Recessed parts 35b and projecting parts for fixing the light receiving direction of the switch function block in one of plural directions are formed on the surface of the support part 35 and the surface of the mounting fitting 6, respectively. A stepped part 351 for further fixing the mounting fitting 6 and the base 3 fixed together by mounting screws is formed on the support part 35 so as not to deviate the fixed light receiving direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic blinker for opening and closing a connection between a power supply and a control load by using ambient external light (light quantity).

[0002]

2. Description of the Related Art A conventional automatic blinker includes, for example, a body (base) and a cover constituting a body, and a light receiving cover for taking in external light, and is connected to a power source and a lighting fixture, which is a control load, respectively. A plurality of terminals (terminal blocks) and surrounding external light are detected, and the amount of light is used to open and close a connection between a terminal connected to a power supply and a terminal connected to a control load, thereby producing lighting equipment, etc. An opening / closing function block (mechanical component including a circuit block or a contact) for blinking is built in and held in the body (Japanese Patent Laid-Open No.
01-53597 and the like).

In some cases, the body is made of a milky white cover, and this cover may also be used as a light receiving cover. However, in recent electronic automatic flashers, setting is performed instead of conventional 360-degree light detection. Separate the cover and the light-receiving cover to ensure directivity so that light is received for the detected detection range,
This improves the malfunction resistance performance.

[0004] Such a conventional automatic flasher is used by being installed outdoors. For example, when installing an automatic flasher, or using the same, a fluorescent light such as a street light or a road light is used. When performing maintenance such as replacing the light, cover the light-receiving cover with the attached bag that does not transmit light, and check the operation of the automatic flasher or the lighting of the fluorescent lamp etc. with the external light blocked. Has been done.

[0005]

However, in the above-mentioned conventional automatic flasher which receives light in a set detection range,
At the time of construction, the light receiving direction is set according to the surroundings. However, after the construction, there is a problem that the set light receiving direction is shifted and the connection opening / closing function does not operate correctly.

[0006] More preferably, it is desired that the set light receiving direction is not shifted even when a large impact is applied such as when a ball collides.

Further, in the case of a street light or a street light, the work of taking out the light-blocking bag and covering it with the light receiving cover is troublesome and poor in maintenance workability, and is preferable for work at a high place. Not something.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides an automatic blinker capable of preventing a problem that, after construction, a set light receiving direction is shifted and a connection opening / closing function does not operate correctly. The purpose is to:

[0009]

According to the first aspect of the present invention, there is provided an automatic blinker which utilizes a plurality of terminals respectively connected to a power supply and a control load, and ambient light. An opening / closing function block for opening / closing a connection between a terminal connected to the power supply and a terminal connected to the control load, and a box-like shape having an opening on a front surface, and including the plurality of terminals and the opening / closing function block therein. A base to be housed in
A light-receiving cover that is formed in a box shape having an opening on the rear surface and closes the opening of the base, and a cover that is attached to the front surface of the light-receiving cover, a support portion that projects rearward is formed on the rear surface of the base. A screw is inserted into the screw hole in the support portion with a part of the surface of the plate-shaped metal fitting having a screw hole formed partially and one surface of the support portion. A screw insertion hole for screwing the bracket and the base to each other is formed, and in a state where the base is mounted on a predetermined mounting portion via the bracket,
A concave portion and a convex portion for fixing the light receiving direction in which the opening / closing function block receives external light in any one of a plurality of directions are formed on one surface of the support portion and a part of the surface of the bracket. And a fixing portion for further fixing the metal fitting and the base fixed to each other with the screw so that the fixed light receiving direction does not deviate is formed on the base.

According to a second aspect of the present invention, in the automatic blinker according to the first aspect, the fixing portion is a step formed on one surface of the support portion. In the state where the screw is loosened, a recess is formed in which a part of the corner of the metal fitting gets over the step portion and is inserted, and the step height of the step portion is such that the corner portion rides on the step portion. It is characterized in that the screw is restricted to a height at which the screw cannot be tightened when the screw is in a state.

[0011] The invention according to claim 3 is the invention according to claim 1 or 2.
The automatic blinker according to claim 1, wherein a spring is inserted through a foot portion of said screw.

According to a fourth aspect of the present invention, there is provided an automatic blinker including a plurality of terminals respectively connected to a power supply and a control load, and a terminal connected to the power supply and the control load using ambient light. An opening / closing function block for opening and closing the connection with the terminal to be connected, a base formed in a box shape having an opening on the front surface, and accommodating the plurality of terminals and the opening / closing function block therein, and a box shape having an opening on the rear surface. A light-receiving cover for closing the opening of the base, and a cover attached to the front surface of the light-receiving cover, a support portion projecting rearward is formed on the rear surface of the base, and the support portion has In a state where a part of the surface of the plate-shaped metal fitting having a screw hole formed therein and one surface of the supporting portion are aligned, a screw is inserted into the metal fitting and the base through the screw hole to mutually connect. For screwing The through hole is formed, and in a state where the base is attached to a predetermined attachment portion via the metal fitting, the light receiving direction in which the opening / closing function block receives external light is changed to one of a plurality of directions. A concave part and a convex part for fixing in the direction are formed on one surface of the support part and a part of the surface of the metal fitting, and a lead piece which projects rearward and has elasticity is formed on a rear surface of the base. A protrusion and a recess are formed on the other surface of the lead piece and a part of the metal fitting.

[0013]

FIG. 1 is a view showing the vicinity of a support portion of an automatic flasher according to a first embodiment of the present invention, and FIG.
FIG. 3 is a cross-sectional view of the automatic flasher of FIG. 2 as viewed from the left, and FIG. 4 is an exploded perspective view of the automatic flasher of FIG. 2. The first embodiment will be described with reference to FIG.

As shown in FIG. 4, the automatic flasher according to the first embodiment includes a plurality of (four, but only one in FIG. 4) terminal blocks 1, an opening / closing function block 2, and a base 3
And a light receiving cover 4 and a cover 5, which are used, for example, mounted outdoors by means of a plate-shaped mounting bracket 6 having an L-shaped cross section and a screw hole 6a formed at one end. is there.

The terminal block 1 includes a screw 11, a plate-like portion 12 to which the screw 11 is screwed, and a terminal plate 13. The plurality of terminal blocks 1 are connected to a power supply and a control load, respectively.

The opening / closing function block 2 includes a mounting substrate 21 and a photovoltaic element 2 mounted on the one surface (front surface) and formed of, for example, a solar cell that generates a voltage corresponding to the brightness of external light.
2, and the relay 2 mounted on the other surface of the mounting board 21
3 and the like. As shown in FIG. 3, one end of each terminal plate 13 is connected to the mounting board 21, and a relay 23 is provided between the terminal block 1 connected to the power supply and the terminal block 1 connected to the control load. It is interposed. That is,
The opening / closing function block 2 opens and closes the connection between the terminal block 1 connected to the power supply and the terminal block 1 connected to the control load by using ambient external light (opening and closing the contact of the relay 23).
Is performed. More specifically, the contact is closed when the external light falls below the specified brightness, and the contact is opened otherwise. The relay 23
Instead, a configuration using a switching element may be used.

The base 3 is made of, for example, black resin and has a light-shielding property and is formed in a box shape having an opening 3a on the front surface, and houses a plurality of terminal blocks 1 and an opening / closing function block 2 therein.

In the example of FIG. 4, below the front surface of the base 3,
Four accommodation chambers 31 for accommodating each terminal block 1 are provided, each accommodation chamber 31 is partitioned by a partition 32, and each terminal block 1 is accommodated and held under the front surface of the base 3 in an insulated state. It has become.

A pair of support portions 33 and another support portion 34 are formed above the front surface of the base 3. At the front end of the support portion 33, a projection 33a that fits into the hole 21a formed on the mounting board 21 is formed, while at the front end of the support portion 34, a hole formed on the mounting board 22 is formed. An unillustrated screw hole 34a to be inserted into 21b is formed. As a result, each projection 33a is connected to each hole 21a.
When the mounting substrate 22 is supported by the support portions 31 and 32 so as to fit into the base, and the screw is inserted into the hole 21b and screwed, the opening / closing function block 2 is housed and fixed in the base 3.

Further, a support portion 35 projecting rearward is formed on the rear surface of the base 3, and this support portion will be described later.

The light receiving cover 4 is formed of a transparent and transparent resin in the shape of a box having an opening on the rear surface.
The opening 3a is closed. In the center of the front surface of the light receiving cover 4, a groove 4 into which a light shielding piece 54 described later of the cover 5 is inserted.
The light receiving cover 4 is located below the groove 41 and in front of the screw 11 of each terminal block 1.
A hole 4 for inserting the tip of the driver
2 are formed. On the other hand, the electric wires connected to each terminal block 1 are inserted from the lower surface of the body constituted by the base 3, the light receiving cover 4 and the cover 5. That is, a semicircular groove 37 is formed on the lower surface of the base 3.
Are formed. Thus, when the electric wire is inserted from the lower surface of the body and the tip of the driver is inserted into the corresponding hole 42, the conductor wire of the electric wire can be connected and fixed to the terminal block 1 at the position where the electric wire is inserted. it can.

As shown in FIG. 3, the opening edge of the base 3 and the opening edge of the light receiving cover 4 have grooves, respectively, and each of the valleys of these grooves is provided with one of the other peaks. The fitting portions 30, 40 that fit together by fitting are provided continuously above the opening 3a and on the left and right sides. In the figure, the fitting portion 40 of the light receiving cover 4 is
It is structured to fit with the fitting portion 30 at a position inside 0. Thus, the intrusion of water droplets from the opening edge of the base 3 closed by the light receiving cover 4 and the cover 5 to the inside thereof is prevented by the fitting portions 30 formed at the opening edges.
Since it is possible to prevent the intrusion of rainwater or the like into the inside, it can be prevented.

The cover 5 is formed in a box shape that covers the front surface of the light receiving cover 4 with, for example, a black resin and has a light shielding property.
It is attached to the front of the light receiving cover 4. The cover 5 has a flexible portion 53 formed between an upper portion 51 and a lower portion 52. By bending the flexible portion 53, the upper portion 5 is formed.
The front surfaces of the first and lower portions 52 can be brought into contact with each other. Then, as shown in FIG. 2, in the center of the front surface of the upper part 51 located in front of the photovoltaic element 22,
While a rectangular hole 51a is formed, a rectangular ridge 52a is formed at the center of the front surface of the lower portion 52 so as to fit into the hole 51a. A groove 51b is formed at the upper center of the hole 51a in the upper part 51.
A hooking projection 52b having a downward claw at the tip that hooks on the edge of the upper portion 51 facing the bottom b is protruded at a corresponding position on the front surface of the lower portion 52. Further, as shown in FIG. 3, a light shielding piece 54 is provided to project rearward from the lower end of the rear surface of the upper portion 51. As a result, the locking projection 52b of the lower portion 52 is
If the front surface of the upper part 51 and the front part of the lower part 52 abut on the edge of the upper part 51 facing the
Just fits into the hole 51a and is also shielded by the light shielding piece 54, so that a suitable light shielding for the photovoltaic element 22 is possible, and the light is not transmitted during construction or maintenance. There is no need to use a bag or the like, and workability is improved.

On the left and right sides of the opening edge of the lower portion 52, a locking projection 52 projecting rearward and having an outward claw at the tip is provided.
c are provided to project rearward. Each of the latching projections 52c is inserted into a hole formed inside the opening edge of the base 3 and penetrating the side wall, and a claw facing outward at the tip is hooked to the outer edge 36 of the hole. ing. Thereby, if each hooking projection 52c is inserted into the hole formed inside the opening edge of the base 3 and the outward claw is hooked on the outer edge 36 of the hole, the upper portion 51 is formed. Except for the hole 51a, the entire opening 3a of the base 5 can be closed. In addition,
A projection 51c for attaching the cover 5 to the front surface of the light receiving cover 4 is provided inside the side wall of the upper portion 51, and is fitted into a hole (not shown) formed in the side wall of the light receiving cover 4 and locked. Are formed.

Here, the support portion 35 of the base will be described in detail. As shown in FIGS. 1 and 3, the support portion 35 has one end surface of the mounting bracket 6 and one surface of the support portion 35. With the screw holes 6
The screw insertion hole 35a for screwing the mounting bracket 6 and the base 3 to each other with a is formed. The light receiving direction in which the photovoltaic element 22 of the opening / closing function block 2 receives external light in a state where the base 3 is mounted on a predetermined mounting portion (for example, a wall surface of a front entrance or a power pole) via the mounting bracket 6. Recesses 35b and one convex portion 6b are formed on one surface of the support portion 35 and one end surface of the mounting bracket 6, respectively. I have. Accordingly, if the protrusion 6b is fitted into any of the plurality of recesses 35b, the light receiving direction can be fixed in any one of the plurality of directions.

The mounting bracket 6 and the base 3, which are fixed to each other by the mounting screw S1, are further fixed so that the fixed light-receiving direction does not shift. The step portion 351 that the surface side contacts is
The base 3 is formed on one surface of the support portion 35. Thus, for example, when a large impact is applied such as at the time of a ball collision, the light receiving direction may be shifted only by the concave portion 35b and the convex portion 6b, but the light receiving direction fixed by the concave portion 35b and the convex portion 6b. Is the step 351
Therefore, the mounting bracket 6 and the base 3 can be more suitably fixed so that the light receiving direction does not shift even when a large impact is applied as described above.

Further, the stepped portion 351 is provided with a mounting screw S1.
Two recesses 351a are formed in which the corners of the one end of the mounting bracket 6 get over the stepped portion 351 and are fitted in the state where the is loosened. Thereby, the angle of the light receiving direction can be set more finely, and the corner of one end of the mounting bracket 6 fits into the concave portion 351a. Can be fixed.

FIG. 5 is a view showing the vicinity of a support portion of an automatic blinker according to a second embodiment of the present invention. The second embodiment will be described with reference to FIG.

In the automatic blinker according to the second embodiment, as shown in the example of FIG. 5, the corner of one end of the mounting bracket 6 has a step 351.
The configuration is the same as that of the automatic blinker of the first embodiment except that the step height H of the step portion 351 is limited to a height at which the mounting screw S1 cannot be tightened while riding on the vehicle.

According to the second embodiment, the mounting screw S1 cannot be tightened while the corner at one end of the mounting bracket 6 is on the step 351. Therefore, the light receiving direction is set in the prescribed direction. The fixing screw S can be securely fixed, and the mounting screw S
1 can be prevented from shifting the light receiving direction due to a collision of a ball or the automatic blinker from being detached from the mounting bracket 6.

FIG. 6 is a view showing the vicinity of a support portion in an automatic blinker according to a third embodiment of the present invention, and the third embodiment will be described with reference to FIG.

In the automatic blinker according to the third embodiment, as shown in the example of FIG. 6, a spring Sp is inserted through the foot of the mounting screw S1.
Except that this spring Sp is interposed between the edge of the lower end exit of the screw insertion hole 35a and the head of the mounting screw S1, the configuration is the same as that of the automatic flasher of the first embodiment.

According to the third embodiment, when the automatic blinker is oriented in a predetermined direction during construction, the base 3 is held by the mounting bracket 6 by the spring force of the spring Sp.
Alternatively, if the base 3 is pulled, the light receiving direction can be easily set to one of a plurality of directions.

FIG. 7 is a view showing the vicinity of the support portion of the automatic blinker according to the fourth embodiment of the present invention, and FIG. 8 is a sectional view showing the vicinity of the support portion of FIG. 7. Referring to FIG. The form will be described.

As shown in FIGS. 7 and 8, the automatic blinker according to the fourth embodiment has a stepped portion 3 on one surface of a support portion 35. As shown in FIG.
51 is not formed, and a lead piece 38 which projects rearward and has elasticity is formed on the rear surface of the base 3, and the lead piece 38 and the other surface of one end of the mounting bracket 6 are provided with a convex portion 381 and a concave portion 6 c respectively. The configuration is the same as that of the automatic blinker of the first embodiment except that a is formed.

According to the fourth embodiment, the recess 35b and the projection 6b formed on one surface of the support portion 35 and one end surface of the mounting bracket 6 are set in a prescribed direction after construction. It is possible to prevent a problem that the light receiving direction is shifted and the connection opening / closing function does not operate correctly.

When the automatic blinker is oriented in a prescribed direction during construction, the base 3 is held on the mounting bracket 6 by the resilient lead piece 38, and the mounting bracket 6 or the base 3 is mounted.
By pulling, for example, the light receiving direction can be easily set to any one of a plurality of directions.

[0038]

As is apparent from the above description, according to the first aspect of the present invention, a plurality of terminals respectively connected to a power supply and a control load, and the outside power of the surroundings are used for the power supply. An opening / closing function block for opening / closing a connection between a terminal to be connected and a terminal connected to the control load, and a base formed in a box shape having an opening on a front surface and accommodating the plurality of terminals and the opening / closing function block therein And a light-receiving cover formed in a box shape having an opening on the rear surface and closing the opening of the base, and a cover attached to the front surface of the light-receiving cover, and a support portion projecting rearward on the rear surface of the base. Is formed, and a screw is inserted through the supporting portion in a state where a part of the surface of the plate-shaped metal fitting having a threaded hole is partially aligned with one surface of the supporting portion. The bracket and the base with the screw holes Screw insertion holes for screwing each other are formed, and in a state where the base is attached to a predetermined attachment portion via the bracket, the light receiving direction in which the opening / closing function block receives external light is changed in a plurality of directions. A concave portion and a convex portion for fixing in any direction are formed on one surface of the support portion and a partial surface of the metal fitting, and the metal fitting and the base fixed to each other by the screw Is fixed to the base so as to further fix the fixed light receiving direction, so that the concave portion and the convex portion formed on one surface of the support portion and part of the surface of the metal fitting are formed. The part prevents the set light receiving direction from being shifted and the connection opening / closing function from operating incorrectly after the installation, and also applies a large impact such as a ball collision. When the can, there is a possibility that the light receiving direction is shifted that only recesses and protrusions,
The light receiving direction is fixed (defined) by the concave portion and the convex portion, and the fixed light receiving direction is further fixed by the fixing portion, so that the light receiving direction does not shift even when a large impact as described above is applied. And the base can be fixed.

According to the second aspect of the present invention, in the automatic blinker according to the first aspect, the fixing portion is a step formed on one surface of the support portion. In the state where the screw is loosened, a concave portion is formed in which a part of the corner portion of the metal fitting gets over the step portion and fits in, and the step height of the step portion is such that the corner portion is in the step portion. Since the height of the screw is limited so that the screw cannot be tightened, it is possible to adjust the light receiving direction while the screw is loosened, and some corners of the bracket ride on the step. The screw cannot be tightened when it is in the position, so the light receiving direction can be securely fixed in the specified direction. The light receiving direction is shifted by Vessel can be prevented so as to come off from the bracket.

According to the third aspect of the present invention, in the automatic flasher according to the first or second aspect, a spring is inserted through a foot portion of the screw. When the light is directed in the direction, if the base is held by the metal fitting by the spring force and the metal fitting or the base is pulled, the light receiving direction can be easily set to any one of a plurality of directions.

According to the fourth aspect of the present invention, a plurality of terminals respectively connected to a power supply and a control load, and a terminal connected to the power supply and the control load are connected to each other by using ambient external light. Opening / closing function block for opening / closing the connection with the terminal, a base formed in a box shape having an opening in the front surface, and accommodating the plurality of terminals and the opening / closing function block therein, and a box shape having an opening in the rear surface. A light receiving cover for closing the opening of the base; and a cover attached to a front surface of the light receiving cover. A supporting portion projecting rearward is formed on a rear surface of the base. With a part of the plate-shaped metal fitting having a screw hole formed in the part and one surface of the supporting part aligned, a screw is inserted and the metal fitting and the base are screwed to each other with the screw hole. Screw insertion A hole is formed, and in a state where the base is mounted on a predetermined mounting portion via the metal fitting, the light receiving direction in which the opening / closing function block receives external light is changed in any one of a plurality of directions. A concave portion and a convex portion for fixing are formed on one surface of the support portion and a portion of the surface of the metal fitting, and a lead piece projecting rearward and having elasticity is formed on a rear surface of the base. And since a convex portion and a concave portion are formed on a part of the other surface of the metal fitting, the concave portion and the convex portion formed on one surface of the supporting portion and the partial surface of the metal fitting are used for setting after construction. In addition to preventing the malfunction that the opening and closing function of the connection does not work correctly due to the misaligned light receiving direction, when turning the automatic blinker in the specified direction during construction, the base with metal Held If such pulling the bracket or base, it can be set easily in either direction of the light receiving direction a plurality of directions.

[Brief description of the drawings]

FIG. 1 is a view showing the vicinity of a support portion in an automatic blinker according to a first embodiment of the present invention.

FIG. 2 is a front view of the automatic blinker according to the first embodiment.

FIG. 3 is a sectional view of the automatic blinker of FIG. 2 as viewed from the left.

FIG. 4 is an exploded perspective view of the automatic blinker of FIG. 2;

FIG. 5 is a view showing the vicinity of a support portion in an automatic blinker according to a second embodiment of the present invention.

FIG. 6 is a view showing the vicinity of a support portion in an automatic blinker according to a third embodiment of the present invention.

FIG. 7 is a view showing the vicinity of a support portion in an automatic blinker according to a fourth embodiment of the present invention.

FIG. 8 is a cross-sectional view of the vicinity of the support portion of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal block 2 Opening / closing function block 3 Base 35 Support part 35a Screw insertion hole 35b Depression 38 Lead piece 4 Light receiving cover 5 Cover 6 Mounting bracket 6a Convex part Sp Spring

Continuing on the front page (72) Inventor Norihiro Murata 1048 Kadoma Kadoma, Kazuma-shi, Osaka Matsushita Electric Works, Ltd. Inventor Yoshinori Akinari 1048 Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor Kenji Okada, 1048 Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Works F-term (reference) 3K073 AA38 AA86 AB07 BA28 CF13 CJ11 CJ22 5G052 AA12 BB10 HA11 HB02 5G055 AE25 BB05 BD12 BD20

Claims (4)

[Claims] 1. A plurality of terminals respectively connected to a power supply and a control load, and opening and closing of a connection between a terminal connected to the power supply and a terminal connected to the control load using ambient external light. Opening / closing function block to be performed, a base formed in a box shape having an opening in the front surface, and accommodating the plurality of terminals and the opening / closing function block therein, and a box shape having an opening in the rear surface, and closing the opening of the base. A light-receiving cover, and a cover attached to the front surface of the light-receiving cover, a support portion projecting rearward is formed on a rear surface of the base, and a screw hole is formed in a part of the support portion. A screw insertion hole for inserting a screw and screwing the metal fitting and the base together with the screw hole is formed in a state where a part of the surface of the plate-shaped metal fitting and one surface of the supporting portion are aligned. And said A concave portion and a convex portion for fixing the light receiving direction in which the opening / closing function block receives external light in any one of a plurality of directions in a state where the base is mounted on a predetermined mounting portion via a tool. Are formed on one surface of the support portion and a part of the surface of the metal fitting, and further fix the metal fitting and the base fixed to each other with the screw so that the fixed light receiving direction does not shift. An automatic blinker characterized in that a fixing part for forming the same is formed on the base. 2. The fixing part is a step formed on one surface of the support part, and the step has a part of a corner of the metal fitting with the screw loosened. A concave portion is formed which gets over the step portion and is fitted therein, and a step height of the step portion is limited to a height at which the screw cannot be tightened in a state where the corner portion is on the step portion. The automatic flasher according to claim 1, wherein: 3. The automatic flasher according to claim 1, wherein a spring is inserted through a foot portion of the screw. 4. A plurality of terminals respectively connected to a power supply and a control load, and opening and closing of a connection between a terminal connected to the power supply and a terminal connected to the control load by using ambient light. Opening / closing function block to be performed, a base formed in a box shape having an opening in the front surface, and accommodating the plurality of terminals and the opening / closing function block therein, and a box shape having an opening in the rear surface, and closing the opening of the base. A light-receiving cover, and a cover attached to the front surface of the light-receiving cover, a support portion projecting rearward is formed on a rear surface of the base, and a screw hole is formed in a part of the support portion. A screw insertion hole for inserting a screw and screwing the metal fitting and the base together with the screw hole is formed in a state where a part of the surface of the plate-shaped metal fitting and one surface of the supporting portion are aligned. And said A concave portion and a convex portion for fixing the light receiving direction in which the opening / closing function block receives external light in any one of a plurality of directions in a state where the base is mounted on a predetermined mounting portion via a tool. Is formed on one surface of the support part and a part of the surface of the metal fitting, and a rearwardly projecting elastic lead piece is formed on the rear surface of the base. An automatic blinker characterized in that a convex portion and a concave portion are formed on a surface of the automatic blinker.