JP2009129862A - Automatic photoelectric on/off device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic photoelectric on/off device whose housing can be casted with a simple mold construction, wherein it is prevented that a water-drop infiltrated into space surrounded by an external surface of a housing and a cover permeates into the housing via a through-hole formed therein and then adheres to a circuit block. <P>SOLUTION: The automatic photoelectric on/off device includes: the housing 7 which has through-holes 211a, 211b formed therein such that controls 311a, 311b for the circuit block 3 incorporated in this device are exposed at the front surface; and a decorative cover 1 which is fitted on the front surface of the housing 7. The housing 7 has an eave 250 formed above the through-holes 211a, 211b, whereby the water-drop flowing on the surface of the housing 7 is prevented from infiltrating into the housing 7 via the through-holes 211a, 211b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a photoelectric automatic flashing device used by being attached to a building or the like.

  Conventionally, when the ambient illuminance is detected and the detected illuminance is lower than the predetermined illuminance, the power supply from the external power supply to the lighting load is turned on and the lighting load is turned on. There is provided an automatic flashing device called an EE switch that turns off the lighting load by turning off the power supply from the external power source to the lighting load when the voltage becomes higher (see, for example, Patent Document 1).

  As this type of automatic flasher, automatic flashers as shown in FIGS. 10A and 10B and FIGS. 11A and 11B are provided. The automatic flashing device shown in FIGS. 10A and 10B includes a base 940 installed on a wall surface of a structure and a cover 910 having an opening at the rear and covering the front of the base 940. The housing 970 includes an illuminance sensor that detects ambient illuminance, and stores a circuit block (not shown) that turns on and off the power supply to the illumination load based on the detected ambient illuminance and blinks the illumination load. Is done.

  Here, when the upper direction of FIG. 10A is the front of the automatic flasher, the lower direction is the rear, the upper left direction is the upper side, and the lower right direction is the lower side, the cover 910 has the rear lower end at the upper end of the base 940. After fitting, it slides downward to cover the front surface of the base 940. A pair of locking protrusions 911 a and 911 a (one not shown) provided on both sides of the rear end of the lower surface of the cover 910 are locked to locking portions 942 a and 942 b formed in an L shape on the front surface of the base 940. As a result, the cover 910 is fixed to the base 940.

  Further, the automatic flasher shown in FIGS. 11A and 11B includes a base 945 installed on the wall surface of the structure, and an inner unit cover 925 that opens the rear surface and covers the front surface of the base 945. A housing 975 is configured, and a decorative cover 915 is provided on the front surface of the inner cover 925. The housing 975 includes an illuminance sensor that detects ambient illuminance, and stores a circuit block (not shown) that turns on and off the power supply to the illumination load based on the detected ambient illuminance and blinks the illumination load. .

Here, in FIG. 11A, when the upper direction is the front of the automatic flasher, the lower direction is the rear, the upper left direction is the upper side, and the lower right direction is the lower side, the decorative cover 915 has the lower end of the rear surface of the housing 975. After fitting the upper end, it slides downward to cover the front surface of the housing 975. As shown in FIG. 15, a locking projection 995 is provided at the approximate center of the back side of the front surface of the decorative cover 915, and a locking projection 995 of the decorative cover is provided on a locking piece 943 provided at the lower front end of the housing 975. , The decorative cover 915 is fixed to the housing 975.
JP 2005-050664 A

  By the way, in the conventional photoelectric automatic flashing device, an operation element for setting an ambient illuminance level (threshold value) for switching on / off of power supply to the illumination load is provided in the circuit block, and is stored in the housing. It had been. Therefore, when setting operation such as the illuminance level by the operator, for example, the cover 910 is removed from the base 940 as shown in FIG. 10B, or the inner cover 925 of FIG. It was necessary to operate the controller by removing it from the controller.

  In addition, when an insertion hole is provided in the front of the housing of the photoelectric flasher and the operator of the circuit block is exposed, the photoelectric automatic flasher is placed outdoors, so water droplets can be transferred to the housing through the insertion hole of the housing. I get into the inside.

  For example, in the photoelectric flasher shown in FIGS. 10A and 10B, since the housing 970 is composed of a cover 910 and a base 940, water is directly applied when an insertion hole is formed in the cover 910. As a result, water enters the housing 970 through the insertion hole.

  11 (a) and 11 (b), the housing 975 is composed of an inner cover 925 and a base 945, and a decorative cover 915 is further provided on the front surface of the inner cover 925. Is covered. However, when water drops enter the gap between the decorative cover 915 and the inner cover 925, the water drops flow along the outer surface of the inner cover 925. Therefore, when the insertion hole is formed in the inner cover 925, the insertion hole passes through the insertion hole. As a result, water enters the housing 975.

  And since the said circuit block is accommodated in the housing 970 and the housing 975, the water which infiltrated into the housing 970 and the housing 975, deterioration of the detection sensitivity of an illumination sensor, resistance in a circuit block, This caused a short circuit of circuit elements such as capacitors and ICs.

  In addition, the conventional photoelectric automatic flashing device has a groove in which a water channel is formed for allowing water adhering to the upper surface of the housing to flow sideways. For example, in the photoelectric automatic flasher of FIG. 10, the groove 980 is formed at the upper end of the base 940 as shown in FIGS. 12A and 12B which are a top perspective view and a side view of the base 940. Further, in FIGS. 13A and 13B, which are a top perspective view and a side view of the housing 975 of the photoelectric flasher of FIG. 11, a groove 985 is formed at the upper end of the inner cover 925. In order to form the groove 980 and the groove 985 in the resin molding operation, it is necessary to use a slide core mold, which increases the cost of the mold and makes the molding operation complicated and takes a long time. There was a problem that the manufacturing cost was high.

  Furthermore, as shown in FIGS. 14 and 15 which are a rear perspective view and a side cross-sectional view of FIG. 11, the conventional photoelectric automatic flashing unit electrically connects a wiring 981 derived from an external power source or a lighting load to a circuit block. And a plurality of connection portions 983 provided at the terminal portion 982 to which the end portions of the wiring 981 are connected are exposed rearward from the rear surface of the housing 975. For this reason, the water droplets traveling on the wiring 981 cause the water droplets to adhere to the terminal portion 982, and further, the water droplets enter the housing 975. As a result, the water droplets adhere to the circuit block (not shown). There was a problem.

  The present invention has been made in view of the above reasons, and the purpose of the present invention is to allow water droplets that have entered the space surrounded by the outer surface of the housing and the cover to enter the housing through an insertion hole provided in the housing. Another object of the present invention is to provide a photoelectric automatic flasher capable of preventing water droplets from adhering to a circuit block and further forming a housing with a simple mold structure.

  The invention according to claim 1 comprises an illuminance detection means for detecting ambient illuminance, switches on and off the power supply to the illumination load based on the detected ambient illuminance, and blinks the illumination load. And a cover that covers the one surface of the housing, an operation surface having an insertion hole through which an operation element provided in the circuit block is inserted, and a housing from above the operation surface. And eaves formed so as to protrude across both ends in the width direction.

  According to this invention, when water droplets enter the space surrounded by the outer surface of the housing and the cover and flow from the upper side to the lower side along the outer surface of the housing, the water droplets are dropped by the eaves provided above the operation surface. Preventing water droplets from entering the housing through the insertion hole provided on the operation surface by preventing the water droplets from flowing onto the operation surface by preventing the water droplets from adhering to the circuit block housed inside the housing. Can be prevented. In addition, since the cover covers the one surface of the housing, it is possible to prevent water from splashing directly onto the housing, thereby further preventing water droplets from adhering to the circuit block housed inside the housing. it can. Furthermore, since the eaves are formed so as to protrude from one surface of the housing, the housing can be molded with a simple mold structure.

  The invention of claim 2 is characterized in that, in claim 1, the eaves have a tapered shape inclined downward as they go in both width directions.

  According to the present invention, the water droplets blocked by the eaves flow from the upper surface of the eaves toward each of the both width directions, and the water drops flow down from the front ends of both width directions, so that the water overflows forward from the upper surface of the eaves and flows downward. It is possible to prevent the water droplets from flowing and reaching the operation surface.

  According to a third aspect of the present invention, in the first aspect, the one surface of the housing above the eaves is a vertical surface formed in the vertical direction, and the operation surface is the other surface direction facing the one surface of the housing rather than the vertical surface. It is located in.

  According to the present invention, since the one surface of the housing above the eaves is formed as a vertical surface, the projecting dimension of the eaves can be increased as compared with the case where it is formed on the slope. Therefore, it is possible to suppress the water accumulated on the upper surface of the eaves from reaching the tip of the eaves, and further, it is possible to prevent water droplets from moving from the upper surface of the eaves to the lower surface due to capillary action. Further, even when water droplets move to the lower surface of the eaves due to capillary action, the operation surface is located in the direction of the other surface facing the one surface of the housing rather than the vertical surface, so that the moved water droplets do not easily reach the operation surface. it can. Furthermore, since the water droplets flow vertically along the vertical surface along the outer surface of the housing, the water droplets can be prevented from flowing from the top of the eaves through the upper surface of the eaves.

  The invention of claim 4 is characterized in that, in claim 2, both side surfaces of the housing continuous from both ends in the width direction of one surface of the housing are formed with grooves connected to the upper surfaces of both ends in the width direction of the eaves. .

  According to the present invention, since the water droplets flowing in the width direction of the eaves flow to the both side surfaces of the housing via the grooves formed on both side surfaces of the housing, the water droplets accumulated on the upper surface of the eaves can be quickly flowed.

  A fifth aspect of the present invention is characterized in that, in the first aspect, the eaves have an arc shape that is inclined downward toward the both width directions.

  According to the present invention, the water droplets blocked by the eaves flow from the upper surface of the eaves toward each of the both width directions, and the water drops flow down from the front ends of both width directions, so that the water overflows forward from the upper surface of the eaves and flows downward. It is possible to prevent the water droplets from flowing and reaching the operation surface.

  According to a sixth aspect of the present invention, there is provided a circuit block that includes illuminance detection means for detecting ambient illuminance, turns on / off power supply to the illumination load based on the detected ambient illumination, and blinks the illumination load. The circuit block includes a terminal portion in which a connection portion to which an external wiring is connected is exposed in a vertically downward direction. To do.

  According to the present invention, since the circuit block includes the terminal portion to which the connection portion to which the wiring from the outside is connected is exposed in the vertically downward direction, the wiring from the outside is viewed from below with respect to the terminal portion of the circuit block. Since the connection is made upward, water droplets traveling on the surface of the wiring do not reach the terminal portion. Thereby, it can prevent that a water droplet adheres to a circuit block along the terminal part of a circuit block.

  As described above, in the present invention, water drops that have entered the space surrounded by the outer surface of the housing and the cover enter the housing through the insertion holes provided in the housing, and the water drops adhere to the circuit block. In addition, there is an effect that the housing can be molded with a simple mold structure.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The automatic flasher of this embodiment will be described with reference to FIGS. Here, in FIG. 2, the upper direction is the upper side of the automatic flasher, the lower direction is the lower side, the right direction is the right side, the left direction is the left side, the front is the front, and the back is the rear. The automatic flashing device according to the present embodiment includes a rectangular base 4, a circuit block 3 installed on the front surface of the base 4, and an inner device cover that opens on the rear surface and covers the base 4 and the front surface of the circuit block 3. 2 and a decorative cover 1 covering the front surface of the inner cover 2, and the housing 7 is configured by covering the inner cover 2 on the base 4. In order to prevent water from entering the housing 7, a packing 5 is provided between the base 4 and an installation surface such as a wall surface of the structure.

  As shown in FIG. 3, the circuit block 3 has an illuminance sensor 32 that detects ambient illuminance mounted on the front surface of the substrate 31, and supplies power to an illumination load (not shown) based on the ambient illuminance detected by the illuminance sensor 32. Has a function to turn on and off the lighting load. In addition to the illuminance sensor 32, on the front surface of the substrate 31, a plurality of circuit element groups 33 for turning on / off and dimming the lighting load by controlling the power supplied to the lighting load using a thyristor, and the lighting load A variable resistor 31a for setting an ambient illuminance level (threshold value) for switching on / off of the power supply, an operation knob 311a for changing the resistance value of the variable resistor 31a, and a variable resistor 31b for setting a dimming level when the illumination load is turned on. And an operation knob 311b for changing the resistance value of the variable resistor 31b. On the rear left and right upper side of the substrate 31, terminals 36a and 36a (one not shown) to which wirings 85a and 85b provided with one end of an external power supply and an illumination load are connected from below are exposed vertically downward. 35a and 35b are mounted. Further, notches 34a and 34b through which mounting screws 6 (described later) for fixing the inner cover 2 to the base 4 are inserted are formed below both sides of the substrate 31. Notches 34c and 34d are provided.

  The base 4 is formed in a substantially rectangular flat plate shape having rectangular openings 43a and 43b arranged side by side in the left-right direction, for example, by an opaque resin. In addition, insertion holes 41 through which mounting screws 6 for fixing the base 4 and the inner cover 2 are inserted from the rear are formed at the four corners of the base 4. Are provided with support recesses 42a and 42b.

  As shown in FIGS. 3 and 4, the inner cover 2 is connected to a curved upper surface 2a that protrudes forward as it goes downward, and a lower end of the upper surface 2a. The vertical surface 2c formed in the vertical direction and the lower end of the vertical surface 2c are connected to each other, and the step surface 2d inclined backward as it goes downward, and the lower surface of the step surface 2d is connected to the lower surface and vertically An operation surface 217 formed in a direction and a planar lower surface 2b that is connected to the lower end of the operation surface 217 and is inclined backward as it goes downward.

  The operation surface 217 is provided with insertion holes 211a and 211b and a daylighting hole 212. The insertion holes 211a and 211b are inserted through the operation knobs 311a and 311b on the substrate 31 and protrude forward from the operation surface 217. The illuminance sensor 32 is exposed forward through the daylighting hole 212.

  In addition, a setting explanation label 220 provided with holes 220a, 220b, and 220c corresponding to the insertion holes 211a and 211b and the lighting hole 212, respectively, is attached to the front surface of the operation surface 217. The description which showed the operation setting of the illumination intensity level which switches on / off of the electric power feeding to the illumination load of the automatic blinker by the knob 311a, and the operation setting of the light control level at the time of lighting load lighting by the operation knob 311b is described.

  Further, an eaves 250 projecting forward is formed on the upper end of the step surface 2d of the inner cover 2 in the left-right direction, and is extended downward from each of the left and right ends of the eaves 250. A starboard portion 260a and a starboard portion 260b are formed on the side surface.

  The eaves 250 includes a central portion 251c formed substantially at the center in the left-right direction of the inner cover 2, a left tapered portion 251a inclined downward from the central portion 251c toward the left end of the inner cover 2, and an inner portion from the central portion 251c. It consists of the right taper part 251b which inclines below as it goes to the right end of the container cover 2, and becomes a taper shape.

  Screw holes (not shown) for screwing attachment screws 6 are provided at the four inner corners of the inner cover 2, and the screws 6 inserted through the insertion holes 41 of the base 4 are screwed into the screw holes. The inner cover 2 is attached to the base 4 by entering. At upper and lower portions of the inner surface of the inner cover 2, struts 213 a and 213 b project from the approximate center in the left-right direction.

  A concave portion 214a is provided at the substantially upper center of the upper surface 2a of the inner cover 2, and a U-shaped covering for locking the locking portion 12 provided on the decorative cover 1 is provided at the upper end of the concave portion 214a. A locking portion 214 is provided.

  From the lower end of the lower surface 2b of the inner cover 2, linear cutouts 215a and 215a are formed upward, and a flexure piece 215 is formed between the cutouts 215a and 215a. A rectangular operation piece 216 is provided so as to protrude downward substantially at the center of the lower end of the front surface of the bending piece 215, and is provided on the decorative cover 1 along the lower end of the back surface of the bending piece 215 on both sides of the operation piece 216. Band-shaped locking projections (not shown) for locking the lock claws 13, 13 (see FIG. 5) are provided. Further, as shown in FIG. 6, plate-like ribs 219a and 219a projecting vertically upward from the lower end on both sides of the back surface of the operation piece 216 to the upper end of the back surface of the bending piece 215 are lowered downward from the front toward the rear. Inclined. A plate-like rib 219b that protrudes vertically upward from the lower end on both sides of the back surface of the flexure piece 215 to the upper end of the back surface of the flexure piece 215 is formed so as to be inclined downward as it goes from the front to the back.

  As shown in FIGS. 3 and 5, the decorative cover 1 is formed with an opaque synthetic resin or the like with an opening on the rear surface, and the upper surface 1 a is made to have a larger protruding dimension from the rear surface as it goes downward. The front surface is inclined in a curved shape, and the lower surface 1b is inclined forward in a flat shape so as to increase the protruding dimension from the rear surface as it goes upward. The lower surface 1b is formed with a daylighting hole 11 for taking ambient light into the illuminance sensor 32, and a daylighting window 111 made of a transparent synthetic resin or the like is attached to the daylighting hole 11 from behind the decorative cover 1. Yes. As shown in FIG. 5, a locking portion 12 including a protruding piece 12 a having a locking piece 12 b whose rear end is bent upward protrudes from the substantially upper center of the decorative cover 1. The inner cover 2 is locked to the tip 214b of the U-shaped locked portion 214 of the inner cover 2. A notch recess 121 that allows the operation piece 216 of the inner cover 2 to be exposed on the front surface is provided at substantially the center of the rear end of the lower surface 1b, and the engagement protrusion of the inner cover 2 is engaged on both sides of the notch recess 121. The belt-like lock claws 13 and 13 that stop are projected upward.

  The packing 5 is for preventing water from entering the automatic flashing device, and is formed in a substantially rectangular shape with, for example, a rubber material, and has an opening 51 at the center.

  The automatic flasher of this embodiment is composed of the above-described members, and each member is arranged as follows.

  When the circuit block 3 is placed on the front surface of the base 4, the terminal portions 35 a and 35 b of the circuit block 3 protrude backward from the openings 43 a and 43 b of the base 4, respectively, and from the lower surfaces of the terminal portions 35 a and 35 b. The connecting portions 36a and 36a are exposed vertically downward. The notches 34 a and 34 b formed in the substrate 31 of the circuit block 3 are arranged to face the insertion holes 41 and 41 below the base 4.

  Next, the rear surface side of the inner cover 2 is covered on the front surface of the base 4 on which the circuit block 3 is placed, and the column portions 213a and 213b provided on the inner surface of the inner cover 2 are formed in the support recesses 42a and 42b. The step 213c provided on the outer periphery of the support column 213a is engaged with the flange 42c provided on the lower end of the support recess 42a, and the step 213d provided on the outer periphery of the support column 213b is connected to the lower end of the support recess 42b. The inner cover 2 is positioned with respect to the base 4 by engaging with the provided flange 42d. Further, the operation knobs 311a and 311b on the board 31 are inserted into the insertion holes 211a and 211b formed in the operation surface 217 of the inner cover 2 and the holes 220a and 220b of the setting explanation label 220, and the front of the inner cover 2 The illuminance sensor 32 on the substrate 31 faces forward through a daylighting hole 212 formed in the operation surface 217 of the inner cover 2 and a hole 220c of the setting explanation label 220.

  Then, the inner screw cover 2 is fixed to the base 4 by inserting the mounting screw 6 from the rear side of the base 4 into the insertion hole 41 and screwing it into a screw hole (not shown) provided on the back surface of the inner cover 2. The housing 4 is formed by the base 4 and the inner cover 2.

  Thereafter, the locking piece 12 b of the decorative cover 1 is inserted into the recess 214 a of the inner cover 2, and the upper surface of the locking piece 12 b is brought into contact with the tip 214 b of the locked portion 214. Then, with the contact portion between the locking piece 12b and the tip 214b as a fulcrum, the lower end of the decorative cover 1 is rotated downward to lock the locking piece 12b to the tip 214b, and then the decorative cover 1 is locked. The claws 13 and 13 are locked to the locking protrusions of the inner cover 2. Thereby, the decorative cover 1 is covered on the front surface of the housing 7.

  Further, the packing 5 is attached to the base 4 by fitting the outer periphery of the rear end of the base 4 into the fitting groove 52 formed along the outer periphery of the front surface of the packing 5 installed on the wall surface. Then, the terminal portions 35a and 35b of the circuit block 3 are exposed rearward from the opening 51 of the packing 5, and the connection portions 36a and 36a are exposed vertically downward from the lower surfaces of the terminal portions 35a and 35b. 6 and 7, the connection portion 36a of the terminal portion 35a constitutes an input portion to which the wiring 85a from the external power source is connected from below, and the connection portion 36a of the terminal portion 35b is formed from a lighting fixture. The wiring 85b is configured as an output unit connected from below.

  The circuit block 3 detects ambient light incident from outside through the daylighting window 111 of the decorative cover 1, the hole 220c of the setting explanation label 220, and the daylighting hole 212 of the inner cover 2, and the illuminance sensor 32 detects the ambient light. Compare the detected ambient illuminance with the predetermined illuminance, and when the ambient illuminance is lower than the predetermined illuminance, turn on the power supply from the external power supply to the illumination load to light the illumination load, and the ambient illuminance lights When it becomes higher than the illuminance, an operation of turning off the power supply from the external power supply to the lighting load and turning off the lighting load is performed. The predetermined illuminance (threshold) to be compared with the ambient illuminance described above is set by changing the resistance value of the variable resistor 31a by the operation knob 311a, and the dimming level of the lighting load at the time of lighting is set by the operation knob 311b. It is set by changing the resistance value.

  In such an automatic flashing device of this embodiment, the eaves 250 are formed so as to cover the upper side of the operation surface 217 having the insertion holes 211a and 211b and the daylighting hole 212. The eaves 250 dammed up the water drops and provided below the eaves 250 even if they entered the gap between the outer cover 1 and the back surface of the decorative cover 1 and flowed downward along the upper surface 2a and the vertical surface 2c of the inner cover 2. Do not allow water droplets to flow on the operation surface 217. Accordingly, it is possible to prevent water droplets from entering the housing 7 through the insertion holes 211a and 211b formed in the operation surface 217, and it is possible to prevent water droplets from adhering to the circuit block 3.

  The eaves 250 have a tapered shape including a central portion 251c, a left tapered portion 251a, and a right tapered portion 251b, and water droplets blocked by the eaves upper surface 250a of the eaves 250 flow in the left and right directions. Thereby, it is possible to prevent water from overflowing to the front end of the eaves 250 and flowing downward, and the water droplets from reaching the insertion holes 211 a and 211 b and the daylighting hole 212 of the operation surface 217.

  Further, the water droplets that have reached the left end of the left tapered portion 251a of the eaves 250 and the right end of the right tapered portion 251b flow downward through the port portion 260a and the starboard portion 260b provided at the left end and the right end of the operation surface 217. . Accordingly, it is possible to prevent water droplets that have flowed down from the left end of the left tapered portion 251a and the right end of the right tapered portion 251b from reaching the insertion holes 211a and 211b and the light collecting hole 212 of the operation surface 217 of the inner cover 2.

  Further, in the automatic flashing device of the present embodiment, the vertical surface 2c above the eaves 250 is formed in the vertical direction, so that the protruding dimension of the eaves 250 is made larger than when the vertical surface 2c is formed as a slope. Can do. Therefore, it is possible to make it difficult for the water droplets blocked by the eaves 250 to reach the front end of the eaves 250, and thus it is possible to prevent the water droplets reaching the eaves upper surface 250 a from moving to the eaves lower surface 250 b due to capillary action.

  Even when water droplets move to the eaves lower surface 250b due to capillary action, the operation surface 217 is located behind the vertical surface 2c via the step surface 2d, so that the water drops moved to the lower surface of the eaves 250 217 can be made difficult to reach. Furthermore, since the water droplets flow vertically along the vertical surface 2 c along the upper surface of the inner cover 2, the water droplets can be prevented from flowing from the front end of the eaves 250 through the upper surface 250 a.

  Further, in the automatic flashing device of this embodiment, the eaves 250 are formed to protrude forward from the inner cover 2. Thereby, in the resin molding operation, the inner unit cover 2 can be molded with a simple mold structure, and the manufacturing cost of the inner unit cover 2 can be reduced.

  In addition, since the automatic flasher of the present embodiment is covered with the decorative cover 1 on the front surface of the housing 7, when the automatic flasher is installed outdoors, water such as rain is applied to the housing 7. It can be prevented from taking directly. Thereby, it is possible to further prevent water droplets from adhering to the circuit block 3 housed in the housing 7.

  Further, in the automatic flashing device of the present embodiment, the connection portions 36a and 36a of the terminal portions 35a and 35b protruding rearward of the circuit block 3 are exposed vertically downward. As a result, the water droplets traveling on the surfaces of the wirings 85a and 85b are connected to the connecting portions 36a and 36a from below, so that the water droplets flowing along the surfaces of the wirings 85a and 85b reach the terminal portions 35a and 35b. There is no. For this reason, it is possible to prevent water droplets from adhering to the circuit block 3 via the terminal portions 35a and 35b.

(Embodiment 2)
The automatic flasher of this embodiment is demonstrated using FIG. As shown in FIG. 8, the automatic flashing device of the present embodiment is different in the structure of the inner cover 2 as shown in FIG. 8. It is characterized in that it flows on both side surfaces 2e and 2f. Since other structures are the same as those in the first embodiment, the same reference numerals are given to the same components, and the description thereof is omitted.

  In addition to the inner cover 2 of the first embodiment, the inner cover 2 is provided with grooves 270a and 270b (one not shown) on the left side surface 2e and the right side surface 2f of the inner unit cover 2.

  The groove portions 270a and 270b are formed in a substantially U-shaped cross section at substantially the center in the vertical direction of both side surfaces 2e and 2f of the inner cover 2. The front ends of the groove portions 270a and 270b are connected to the upper left end of the left tapered portion 251a and the upper right end of the right tapered portion 251b, and the rear ends of the groove portions 270a and 270b are the side surfaces 2e and 2f of the inner cover 2, respectively. It extends to the rear end.

  As described above, in the automatic flasher of this embodiment, the water droplets flowing toward the left and right sides of the eaves upper portion 250a reach the upper left end of the left tapered portion 251a and the upper right end of the right tapered portion 251b, and then the inner cover 2 flows into the grooves 270a and 270b of the side surfaces 2e and 2f. As a result, water droplets accumulated on the eaves upper surface 250a can immediately flow into the grooves 270a and 270b, and can flow downward along the side surfaces 2e and 2f.

  Moreover, since the other structure of the automatic flasher of this embodiment is the same as that of Embodiment 1, there exists an effect similar to Embodiment 1. FIG.

(Embodiment 3)
The automatic flasher of this embodiment is demonstrated using FIG. The automatic flashing device of the present embodiment is different in the shape of the eaves provided on the inner cover 2 as shown in FIG. It has the feature that it was made to flow toward. Since the other structure is the same as that of the second embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  Instead of the inner cover 2 of the second embodiment, the inner cover 2 is formed with an arc-shaped eaves 280 that is inclined downward toward the left end and the right end from the center of the inner cover 2 at the upper end of the step surface 2d. is doing.

  Accordingly, water droplets blocked by the upper surface of the eaves 280 flow toward the left and right directions of the eaves 280. Thereby, it is possible to prevent water from overflowing from the upper surface of the eaves 280 to the front end and flowing downward, and the water droplets from reaching the operation surface 217.

  Moreover, since the other structure of the automatic blinker of this embodiment is the same as that of Embodiment 2, there exists an effect similar to Embodiment 2. FIG.

It is sectional drawing of the photoelectric type automatic blinker of Embodiment 1. FIG. It is a front view same as the above. It is an exploded perspective view same as the above. It is a front view same as the above (without a decorative cover). It is a rear view of a decorative cover same as the above, and a perspective view of a housing. It is a perspective view of the rear surface when wiring same as the above is connected. It is sectional drawing when connecting wiring same as the above. It is a perspective view of the photoelectric flasher of Embodiment 2. It is a perspective view of the photoelectric flasher of Embodiment 3. (A) and (b) are a perspective view and an exploded perspective view of a conventional photoelectric automatic flasher. (A) and (b) are a perspective view and an exploded perspective view of a conventional photoelectric automatic flasher. (A) (b) It is the perspective view and side view from the base upper direction of the conventional photoelectric automatic blinker. (A) (b) The perspective view and side view from the upper part of the housing of the conventional photoelectric automatic blinker. It is a rear view when the wiring of the conventional photoelectric automatic flasher is connected. It is sectional drawing when connecting wiring same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cosmetic cover 2 Inner unit cover 2c Vertical surface 217 Operation surface 250 Eaves 3 Circuit block 311a Operation knob 32 Illuminance sensor 4 Base 5 Packing 7 Housing

Claims (6)

An illuminance detection means for detecting the ambient illuminance, a circuit block for turning on and off the power supply to the illumination load based on the detected ambient illuminance, and blinking the illumination load;
A housing for storing the circuit block inside,
A cover overlying one side of the housing,
One surface of the housing has an operation surface formed with an insertion hole through which an operation element provided in the circuit block is inserted, and an eaves formed so as to protrude from both ends of the housing in the width direction of the housing. A photoelectric flasher that performs.   The photoelectric flasher according to claim 1, wherein the eaves have a tapered shape that is inclined downward in the width direction. One surface of the housing above the eaves is a vertical surface formed in a vertical direction,
2. The photoelectric automatic flashing device according to claim 1, wherein the operation surface is positioned in a direction of the other surface opposite to one surface of the housing rather than a vertical surface.   3. The photoelectric automatic flashing according to claim 2, wherein grooves are formed on both side surfaces of the housing continuous from both ends in the width direction of the one surface of the housing so as to be connected to the top surfaces of both ends in the width direction of the eaves. vessel.   2. The photoelectric flasher according to claim 1, wherein the eaves have a circular arc shape that is inclined downward in the width direction. An illuminance detection means for detecting the ambient illuminance, a circuit block for turning on and off the power supply to the illumination load based on the detected ambient illuminance, and blinking the illumination load;
A housing for storing the circuit block inside,
A cover overlying one side of the housing,
The circuit block includes a terminal portion in which a connecting portion to which wiring from the outside is connected is exposed in a vertically downward direction.

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