TWI543223B - Automatic switch with heat-ray sensor - Google Patents

Description

Automatic switch with thermal sensor

The present invention relates to an automatic switch for attaching a thermal sensor that detects heat and controls a lighting load and an exhaust fan.

In the past, an automatic switch with a thermal sensor was used in order to illuminate the lighting load and drive the exhaust fan in response to the user's access to the room. An automatic switch with a thermal sensor attached to Japanese Laid-Open Patent Publication No. 2005-183319 causes a lighting load to be interlocked with an exhaust fan in accordance with an output of the thermal sensor.

The automatic switch with a thermal sensor has an exhaust fan interlocking mode switch operated by a user. By operating the exhaust fan interlocking mode switch, the user can switch the operating mode of the exhaust fan and the lighting load simultaneously, and delay the operation of the lighting load from the start of the operation, and then delay the operation of the exhaust fan. mode.

It is an object of the present invention to provide an automatic switch with a thermal sensor that is more practical.

One aspect of the present invention provides an automatic switch with a thermal sensor for use with a lighting load and an exhaust fan. The automatic switch has a thermal sensor unit that detects heat generated from the human body, and a control unit that outputs a light/light-off that controls the lighting load and the exhaust according to the sensor signal from the thermal sensor unit. a driving/stopping control signal of the fan; the first switcher performs ON/OFF control of the power supply of the lighting load according to the control signal; and the second switcher performs power supply to the exhaust fan according to the control signal. The ON/OFF control and the operation display unit display ON and OFF of the second switch by the presence or absence of light emission. The control unit may select the first control and the second control: the first control is for performing ON control of the first switch, and is used for performing ON control of the second switch; the second control is for The first shutter is subjected to ON control, the first shutter is OFF-controlled, and then the second shutter is used for ON control. The control unit causes the operation display unit to emit light during ON control of the second switch.

The automatic switch with the thermal sensor causes the operation display unit to emit light during the ON control of the second switch that performs ON/OFF control of the power supply to the exhaust fan, thereby visually displaying the power supply of the exhaust fan. More practical. Other aspects and advantages will be apparent from the following description together with the drawings showing examples of the idea of the technology of the present invention.

An automatic sensor 10 with a thermal sensor according to an embodiment of the present invention will be described. In the drawings, the same reference numerals are given to the same members, and overlapping description will be omitted. In the following description, the automatic switch 10 to which the thermal sensor is attached in the embodiment may be referred to as an automatic switch 10.

As shown in FIGS. 1 and 2, the automatic switch 10 includes a thermal sensor unit 1, a control unit 4, a first switch 5a, a second switch 5b, and an operation display unit 8. The thermal sensor unit 1 detects the heat emitted from the human body and outputs a sensor signal. The control unit 4 outputs a control signal for controlling the lighting/lighting of the lighting load 52 and the driving/stopping of the exhaust fan 53 in accordance with the sensor signal from the thermal sensor unit 1. The first switch 5a performs ON/OFF control of the power supply of the illumination load 52 in accordance with the control signal. The second shutter 5b controls ON/OFF of the power supply of the exhaust fan 53 in accordance with the control signal. The operation display unit 8 displays ON/OFF control of the second shutter 5b by the presence or absence of light emission. The control unit 4 is configured to select the first control and the second control. In the first control, the control unit 4 performs ON control of the first switch 5a, and performs ON control of the second switch 5b. In the second control, the control unit 4 performs ON control of the first switch 5a, and performs ON control of the second switch 5b after the OFF control of the first switch 5a. The control unit 4 causes the operation display unit 8 to emit light during the ON control of the second shutter 5b.

The user who observes the operation display unit 8 can intuitively know whether or not the exhaust fan 53 is operating depending on whether or not the operation display unit 8 emits light. Thereby, the practicality of the automatic switch 10 becomes higher.

Hereinafter, the circuit configuration of the automatic switch 10 will be briefly described.

As shown in FIG. 2, the automatic switch 10 includes an operation switch 2a that is manually operated, and an input determination unit 2 that determines an ON operation and an OFF operation on the operation switch 2a. The brightness sensor 1s detects the brightness of the surroundings. The control unit 4 controls the lighting/lighting of the lighting load 52 according to the sensor signal from the thermal sensor unit 1, the discrimination signal from the input determining unit 2, and the illuminance signal from the brightness sensor 1s. The driving/stopping of the exhaust fan 53. The DC stabilized power supply 4c is electrically connected to the commercial power source 51 via the first power supply terminal 11c1 and the second power supply terminal 11c2. The automatic switch 10 is electrically connected to the illumination load 52 by the first load terminal 11c3 and the second load terminal 11c4. The automatic switch 10 is electrically connected to the exhaust fan 53 via the third load terminal 11c5 and the fourth load terminal 11c6. The first switch 5a is configured to electrically connect and disconnect the commercial power source 51 and the series circuit of the illumination load 52. The first shutter 5a includes a first opening and closing element 5a1, an opening and closing supply circuit, and a first opening/closing control unit 5a2 that controls the first opening and closing element 5a1. The first opening and closing element 5a1 is electrically connected between the first power supply terminal 11c1 connected to the commercial power source 51 and the second load terminal 11c4 connected to the illumination load 52.

The second shutter 5b is configured to electrically connect and disconnect the series circuit of the commercial power source 51 and the exhaust fan 53. The second shutter 5b includes a second opening and closing element 5b1, an opening and closing supply circuit, and a second opening/closing control unit 5b2 that controls the second opening and closing element 5b1. The second opening and closing element 5b1 is electrically connected between the first power supply terminal 11c1 connected to the commercial power source 51 and the fourth load terminal 11c6 connected to the exhaust fan 53.

The control unit 4 has a continuous lighting mode, an automatic lighting mode, and a forced light-off mode. In the continuous lighting mode, the control unit 4 causes the lighting load 52 to continuously illuminate regardless of whether the sensor signal is received or not. In the automatic lighting mode, the control unit 4 automatically lights the lighting load 52 according to the sensor signal, and turns off the lighting load 52 after a predetermined lighting keeping time. In the forced light-off mode, the control unit 4 forcibly turns off the lighting load 52 regardless of whether the sensor signal is received or not. The control unit 4 sequentially switches the continuous lighting mode, the automatic lighting mode, and the forced light-off mode in the operation of each of the operation switches 2a, and displays the mode after switching in the mode display unit 6.

In addition, in the automatic illumination mode, the control unit 4 can control the first switch 5a according to the sensor signal and the illuminance signal to automatically illuminate the illumination load 52, and cause the illumination load 52 after the predetermined illumination holding time elapses. Turn off the light. Further, in the automatic illumination mode, the control unit 4 can drive the exhaust fan 53 simultaneously with the automatic lighting of the lighting load 52, or drive the exhaust fan 53 after a predetermined lighting holding time, and then, in the self-illuminating load When the light is turned off 52, the exhaust fan 53 is stopped at the time point when the predetermined delay operation time elapses.

Next, an example of use of the automatic switch 10 will be described.

The automatic switch 10 is mounted, for example, on the wall surface of the restroom, and controls the lighting load 52 of the restroom and the exhaust fan 53.

As shown in FIGS. 1 and 3, the automatic switch 10 may include a mounting frame 17 for mounting on a construction surface (not shown) such as a wall surface of the restroom. The automatic switch 10 can be provided with a body 11 that is embedded in a construction material constituting a construction surface. As shown in FIG. 4, the body 11 may have, for example, an outer shape formed on a rectangular parallelepiped body 11a having a bottomed rectangular shape and a bottomed cylindrical cover 11b. In the body 11, the body 11a and the cover 11b are fitted to each other to form a case in which the inside is a cavity. The body 11 is configured to house the control unit 4, the first shutter 5a, and the second shutter 5b therein. In the embodiment, the size of the body 11 is set to be, for example, the same as the size of a series of modules corresponding to the size of the embedded wiring harness module in which three JIS specifications are arranged. In the illustrated example, the width of the body 11 is slightly smaller than the width of the first window hole 17aa of the mounting frame 17 for the wiring device in the front view.

The main body 11a is provided with an engagement projection 11ac that is fitted to the cover 11b. Two engagement projections 11ac are formed on the upper wall and the lower wall of the main body 11a. The body 11a is formed of an electrically insulating resin material. As the electrically insulating resin material, for example, an ABS (acrylonitrile butadiene styrene copolymer) resin or a urea resin can be used. The main body 11a can be formed, for example, by injection molding: an electrically insulating resin material that is heated and melted is injected into a mold and cooled and solidified.

The automatic switch 10 is electrically connected to the commercial power source 51, the lighting load 52, and the exhaust fan 53 by wires (not shown). The automatic switch 10, as shown in Fig. 4, has a terminal 11c connected to an electric wire. The main body 11a houses the terminal 11c. The terminal 11c includes a lock spring 11ca to apply a spring force to the electric wire, and a terminal plate 11cb to accommodate the lock spring 11ca. The terminal 11c can be configured such that when the electric wire is inserted, the electric wire can be electrically connected to the electric wire and the electric wire can be fixed by the terminal plate 11cb and the lock spring 11ca. The lock spring 11ca can be formed by bending a metal plate such as copper or a copper alloy. Similarly, the terminal block 11cb can be formed by bending a metal plate. The terminal 11c may be a so-called quick junction terminal that is electrically and mechanically connected to the electric wire by inserting a core wire in the electric wire that is stripped of the insulation coating. The body 11a is provided with a button 11cc for releasing the electric wire from the quick junction terminal. When the push button 11cc is pressed from the back surface of the body 11 by the jig, the button 11cc deforms the lock spring 11ca. The electric wire can be taken out from the body 11 by the deformation of the lock spring 11ca. The terminal 11c may include a first power supply terminal 11c1, a second power supply terminal 11c2, a first load terminal 11c3, a second load terminal 11c4, a third load terminal 11c5, and a fourth load terminal 11c6.

On the upper wall and the lower wall of the covering body 11b, two projecting pieces 11bc projecting toward the main body 11a are formed. Each of the protruding pieces 11bc is elastically deformable to the cylindrical portion of the covering body 11b, and is integrally formed with the cylindrical portion. The protruding piece 11bc may be a C-shaped hook forming the engaging hole 11bf. The engaging projection 11c of the main body 11a is fitted to the engaging hole 11bf of the protruding piece 11bc.

For example, two mounting claws 11bd are formed on each side wall 11bb of the covering body 11b. Each of the attachment claws 11bd is fitted into the fixture mounting hole 17ab of the mounting frame 17. A pair of cut-in grooves 11bg are formed in the side wall 11bb. A pair of mounting claws 11bd are disposed between the pair of cutting grooves 11bg. The covering body 11b forms a flexure piece 11be between the pair of mounting claws 11bd. The flexure piece 11be can flex from the side wall 11bb toward the inside of the body 11. The covering body 11b is formed of an electrically insulating resin material. The electrically insulating resin material can be formed, for example, using an ABS resin or a urea resin. The covering body 11b can be formed, for example, by injection molding: an electrically insulating resin material that is heated and melted is injected into a mold and cooled and solidified.

The mounting frame 17 is formed by facing one of the long pieces 17a and one of the opposite pairs of the short pieces 17b. For example, a mark such as an arrow may be provided on the short film 17b to facilitate the mounting of the mounting frame 17 of the construction surface. For example, a mark such as a triangle may be provided on the long piece 17a to facilitate the mounting of the mounting frame 17 and the body 11. The long piece 17a is provided with a plurality of instrument mounting holes 17ab of the mountable body 11. The mounting frame 17 can hold the body 11 by fitting the mounting claws 11bd of the covering body 11b to the fixture mounting holes 17ab. When the body 11 is attached to the mounting frame 17, for example, the mounting claws 11bd of the side walls 11bb of one of the covering bodies 11b are inserted into the appliance mounting holes 17ab of one of the mounting frames 17. Next, the covering body 11b is inserted into the first window hole 17aa of the mounting frame 17 in a state where the mounting claw 11bd of the other side wall 11bb is deflected. After the body 11 is inserted into the mounting frame 17, the mounting claw 11bd of the other side wall 11bb of the covering body 11b is inserted into the other device mounting hole 17ab of the mounting frame 17. The body 11 is held by the mounting frame 17 by inserting the mounting claws 11bd into the appliance mounting holes 17ab. By pressing the inside of the body 11 into the flexible sheet 11be, the mounting claws 11bd can be pulled out from the appliance mounting hole 17ab to detach the body 11 from the mounting frame 17.

As shown in FIGS. 1 and 3, a long hole 17ac is formed in the short piece 17b of the mounting frame 17. The fixing frame (not shown) is inserted through the long hole 17ac, and is screwed to the screw portion of the insert case (not shown) embedded in the construction surface, thereby fixing the mounting frame 17 to the construction surface. The short piece 17b of the mounting frame 17 forms a screw hole 17ad for the plate screw. The screw hole 17ad can be screwed to the mounting frame 17 by a rectangular frame-shaped cosmetic cover (not shown). The shape and structure of the mounting frame 17 can be variously changed if the body 11 can be attached. The mounting frame 17 can be made of, for example, a resin body or a metal body.

The automatic switch 10 houses a circuit portion 16 that can control the illumination load 52 and the exhaust fan 53 inside the body 11. The circuit unit 16 includes a first circuit board 16a and a second circuit board 16c. The first circuit board 16a is disposed to face the second circuit board 16c via the electrically insulating plate 16b. The first circuit board 16a and the second circuit board 16c may be electrically connected by a conductor (not shown). The circuit boards 16a and 16c have a rectangular shape, for example, and may be formed of a printed wiring board.

For example, the thermal sensor unit 1, the input determination unit 2, and the control unit 4 may be mounted or formed on the first circuit board 16a. The operation display unit 8 has a first light-emitting diode 8a. The mode display unit 6 has a plurality of (for example, three) second light-emitting diodes 6a. The operation display unit 8 and the mode display unit 6 are attached or formed on the first circuit board 16a. The switch main body 16aa is mounted on the first circuit board 16a, and has an operation unit 2ac that is pressed and driven by the manual operation unit 2a1; the first switch unit 2e1 is pressed and driven by the second flexure portion 11by; and the second switch unit 2e2 is used to The third flexure portion 11bz is pressed and driven. A photodiode constituting the luminance sensor 1s is mounted on the first circuit board 16a. For example, various electronic components such as a temperature fuse for suppressing abnormal heat generation and/or a relay for preventing leakage may be attached to the first circuit board 16a.

For example, the DC stabilized power source 4c, the first switch 5a, and the second shutter 5b may be mounted or formed on the second circuit board 16c. The DC stabilized power supply 4c is constituted by a plurality of electronic components 16aa. The first shutter 5a includes a first opening and closing element 5a1 and a first opening and closing control unit 5a2 that controls the first opening and closing element 5a1. The first opening and closing element 5a1 can be configured, for example, by using a bidirectional three-terminal thyristor. The first opening/closing element 5a1 of the first shutter 5a is not limited to an electronic switch such as a semiconductor switching element, and may be a mechanical switch including a movable contact and a fixed contact. The second shutter 5b includes a second opening and closing element 5b1 and a second opening/closing control unit 5b2 that controls the second opening and closing element 5b1. The second opening and closing element 5b1 can be configured using a relay having a contact. For a relay having a contact, for example, a latch relay having a set coil and a reset coil can be used. The second opening/closing control unit 5b2 switches ON and OFF of the second opening and closing element 5b1 in accordance with the control signal. The second opening/closing element 5b1 of the second shutter 5b is not limited to a mechanical switch including a movable contact and a fixed contact, and may be an electronic switch such as a semiconductor switching element.

The thermal sensor unit 1 can be configured using an infrared sensor 1a. The infrared sensor 1a is attached to the first circuit board 16a. The infrared sensor 1a detects, for example, heat (for example, infrared rays) emitted from the human body. The infrared sensor 1a can be composed of a pyroelectric device. The thermal sensor unit 1 may be configured to detect infrared rays at any time, or may be configured to detect infrared rays at predetermined time intervals. The thermal sensor unit 1 constitutes a human body detecting sensor capable of detecting the presence and absence of a human body. The thermal sensor unit 1 can be configured, for example, integrally with the luminance sensor 1s.

In a preferred example, the thermal sensor unit 1 is provided with a protruding portion 1k, and is more protruded than the front surface of the operation switch 2a in order to secure a predetermined viewing angle. The thermal sensor unit 1 includes a cylindrical optical member 1r. The optical member 1r may have a mirror portion for amplifying the detection range of the infrared sensor 1a. The infrared sensor 1a and the optical member 1r are covered with the sensor covering portion 1b. The front end of the sensor cover portion 1b may be hemispherical. The heat emitted from the human body can penetrate the sensor cover 1b. The sensor cover portion 1b may have a Fresnel lens that condenses infrared rays. The sensor covering portion 1b can be formed, for example, using a polyethylene resin. The sensor covering portion 1b is sandwiched between the covering body 11b of the body 11 and the first circuit board 16a, and is housed inside the body 11.

The operation switch 2a is configured to manually press the manual operation unit 2a1 to operate the switch body 2aa. That is, the manual operation unit 2a1 constitutes a part of the operation switch 2a that is manually pressed. The input determination unit 2 is configured to be able to determine whether or not the operation switch 2a is operated. The manual operation unit 2a1 has a cosmetic cover portion 2g, a handle portion 2f, and a cover 11b. The cosmetic cover portion 2g includes a translucent member 2g1 that provides a front surface 2ab for performing a pressing operation, and a bottom plate 2g2 that is provided on the back surface of the translucent member 2g1. The manual operation unit 2a1 includes a handle portion 2a2 and is provided to overlap the protruding portion 1k of the thermal sensor unit 1. The handle portion 2a2 has a finger-contact recess 2a3 which is formed so as to be able to catch a finger in order to remove the cosmetic cover portion 2g. The handle portion 2f detachably holds the cosmetic cover portion 2g. When the cosmetic cover portion 2g is detached from the handle portion 2f, the first surface 11bp of the body 11 is exposed to the outside through the opening portion 2f1 of the handle portion 2f. The first through hole 2f3 and the plurality of second through holes 2f4 are formed in the handle portion 2f.

The light transmissive member 2g1 is, for example, a rectangular plate. The light transmissive member 2g1 can be formed of a light transmissive resin material. As the light transmissive resin material, for example, a polycarbonate resin can be used. As shown in FIGS. 8 to 13, the cosmetic cover portion 2g may have a light diffusion layer 2g5 on the back surface of the light transmissive member 2g1. The light diffusing layer 2g5 is formed by screen printing a resin containing a white pigment on the light transmissive member 2g1. As the white pigment, for example, cerium oxide or barium titanate can be used. The light-diffusing layer 2g5 may be composed of a sheet-like member attached to the light-transmitting member 2g1. The light transmissive member 2g1 is held by, for example, a double-sided tape attached to the bottom plate 2g2. The bottom plate 2g2 has a first through hole 2gd that is provided corresponding to the first through hole 2f3 of the handle portion 2f, and a second through hole 2gc that is provided corresponding to the second through hole 2f4 of the handle portion 2f.

As shown in FIGS. 4, 10, and 13, the claw portion 2g3 is provided on the four sides of the bottom plate 2g2 of the cosmetic cover portion 2g. The handle portion 2f includes a locking hole 2f2 and is formed at a position corresponding to the claw portion 2g3 of the bottom plate 2g2. The claw portion 2g3 of the bottom plate 2g2 is hooked and detached to the locking hole 2f2 of the handle portion 2f.

The second window hole 11bx, the third window hole 11bq, the fourth window hole 11bh, and the fifth window hole 11bi are formed in the upper wall of the covering body 11b. The second window hole 11bx, the third window hole 11bq, the fourth window hole 11bh, and the fifth window hole 11bi are, for example, circular holes. A square tubular first cylindrical projection 11bu is provided at a central portion of the covering body 11b. The first cylindrical protrusion 11bu has a sixth window hole 11bo. The light of the first light-emitting diode 8a is radiated to the outside of the automatic switch 10 through the sixth window hole 11bo of the first cylindrical protrusion 11bu and the cosmetic cover portion 2g. In the center portion of the covering body 11b, three fourth cylindrical projections 11bs having a rectangular tube shape are provided. Each of the fourth cylindrical projections 11bs has a seventh window hole 11bj. The light of the second light-emitting diode 6a is radiated to the outside of the automatic switch 10 through the seventh window hole 11bj of the fourth cylindrical protrusion 11bs and the cosmetic cover portion 2g. Near the lower end of the covering body 11b, for example, a semicircular opening 11bm is formed.

The covering body 11b is provided with a shaft portion 11bn for rotatably mounting the handle portion 2f of the manual operation portion 2a1. As shown in FIGS. 4, 11, and 12, the shaft portion 11bn of the covering body 11b is pressed against the handle portion 2f of the manual operation portion 2a1 by a plate spring 2d made of metal. The manual operation portion 2a1 is held by the body 11 by sandwiching the shaft portion 11bn of the cover 11b with the handle portion 2f and the plate spring 2d. The first bending portion 11br is formed at a central portion of the first surface 11bp of the covering body 11b. The first flexible portion 11br has an end portion that is held on the first surface 11bp and a free end that is T-shaped. The free end of the T-shape is, for example, partially separated by a groove. The first flexure portion 11br is configured to be bent toward the inside of the body 11 by being pressed by the handle portion 2f.

The operation switch 2a of the embodiment is a so-called piano key switch, and one end portion of the handle portion 2f of the manual operation portion 2a1 is supported by the body 11 and the other end portion is capable of arbitrarily rotating the switch body 2aa. The operator 2ac. The user can operate the operation switch 2a by the key touch of the manual operation unit 2a1.

As shown in FIGS. 4 and 11, the T-shaped first flexure portion 11br can be brought into contact with the operator 2ac. In a state where the manual operation unit 2a1 is supported by the body 11, the back surface of the manual operation unit 2a1 can be brought into contact with the first bending portion 11br of the cover 11b. When the user presses the manual operation unit 2a1, the manual operation unit 2a1 is displaced toward the covering body 11b side, and the operator unit 2ac inside the body 11 is pressed by the first bending portion 11br. When the operator 2ac is pressed, the operation switch 2a is turned ON. When the force of pressing the manual operation unit 2a1 is released, the manual operation unit 2a1 returns to the original position by the reaction force of the operator 2ac or the like, and the operation switch 2a is turned OFF. To operate the switch 2a, for example, a tactile switch can be used.

As shown in Fig. 1, a ridge portion 2g4 is provided on the front surface 2ab of the cosmetic cover portion 2g. The ridge portion 2g4 functions as a flag when the user operates the manual operation portion 2a1.

As shown in FIGS. 4, 6, and 8, the projecting claws 2f5 of the handle portion 2f are inserted into the locking grooves 11bk of the body 11 to be hooked. By pulling out the projecting claws 2f5 from the locking grooves 11bk, the handle portion 2f can open and close the body 11 around the shaft portion 11bn. The second bending portion 11by and the third bending portion 11bz are formed on the first surface 11bp of the covering body 11b. Each of the second flexure portion 11by and the third flexure portion 11bz has an end portion that is held on the first surface 11bp and a free end that is, for example, semicircular, and is separated by, for example, a groove. The second flexure portion 11by and the third flexure portion 11bz are bent by the inside of the body 11 by being pressed. When the manual operation unit 2a1 is open to the body 11, when the user presses the second bending portion 11by, the first switch portion 2e1 is turned on, and when the user releases the pressing of the second bending portion 11by, the first switch is turned on. The part 2e1 is turned OFF. Similarly, when the user presses the third flexure portion 11bz, the second switch portion 2e2 is turned on, and when the user releases the pressing of the third flexure portion 11bz, the second switch portion 2e2 is turned OFF.

By inserting at least a part of the first cylindrical protrusion 11bu into the first through hole 2f3 of the handle portion 2f, the light of the first light-emitting diode 8a is efficiently radiated to the outside. Further, it is suppressed that light from the outside is absorbed by the inside of the introducer body 11. As shown in FIG. 8, the handle portion 2f includes a second cylindrical projection 2ft, and protrudes toward the body 11 to surround the first cylindrical projection 11bu. The second cylindrical projection 2ft prevents the light from the first cylindrical projection 11bu from leaking between the manual operation portion 2a1 and the cover 11b regardless of the operation of the manual operation portion 2a1. The body 11 is provided with a third cylindrical protrusion 11bw, and protrudes inside the body 11 to surround the first light-emitting diode 8a. The third cylindrical projection 11bw can suppress the diffusion of the light from the first light-emitting diode 8a into the interior of the body 11, and the light of the first LED 8a can be efficiently emitted to the outside of the body 11. Shoot out. As shown in FIG. 9 and FIG. 10, the light from the second light-emitting diode 6a is efficiently emitted from the fourth cylindrical protrusion 11bs to the outside of the body 11 in the same manner as the first light-emitting diode 8a. The handle portion 2f includes a fifth cylindrical projection 2fs, and protrudes toward the body 11 to surround the fourth cylindrical projection 11bs. Further, the body 11 is provided with a sixth cylindrical projection 11bt, and protrudes inside the body 11 so as to surround the second LED 6a.

The control unit 4 will be described.

The control unit 4 includes a timer unit (not shown) for counting the lighting time of the lighting load 52 and the operating time of the exhaust fan 53. When the control unit 4 inputs the sensor signal again from the thermal sensor unit 1 during the lighting time of the lighting load 52, the time from the time when the sensor signal is re-inputted to the predetermined lighting holding time At the point in time, the lighting load 52 is turned off. Therefore, for example, the timer unit can be configured by a triggerable timer, and the timing from the time when the sensor signal is re-inputted to the predetermined lighting holding time can be started. The control unit 4 is configured to stop the exhaust fan 53 at the same time as the lighting of the lighting load 52 is started, or to stop the exhaust fan 53 after the lighting holding time and the delay operation time have elapsed.

When the brightness detected by the brightness sensor 1s is lower than a threshold value of the preset brightness (the dark state), the control unit 4 receives the sensor signal indicating that the human body is detected from the thermal sensor unit 1. , the lighting load 52 is illuminated. The threshold value of the luminance is stored, for example, in advance in a memory (not shown) of the control unit 4. The control unit 4 controls the second shutter 5b to maintain the lighting load 52 in the lighting state until the count value of the timer unit reaches the predetermined lighting holding time.

The control unit 4 receives the sensor signal from the thermal sensor unit 1, and outputs a control signal for controlling the first switch 5a and the second switch 5b based on the sensor signal. The control unit 4 can be configured by, for example, a microcomputer including a CPU (Central Processing Unit).

The control unit 4 switches between the continuous lighting mode, the automatic lighting mode, and the forced light-off mode in response to the pressing operation of the manual operation unit 2a1. The control unit 4 is electrically connected to the plurality of second light-emitting diodes 6a. The control unit 4 controls the lighting of the plurality of second light-emitting diodes 6a in response to the mode to be performed. The mode display unit 6 displays the current mode of the automatic switch 10 in accordance with the light-emitting color and the lighting state of the second light-emitting diode 6a. The text columns in Figure 1 are "Continuous Start", "Automatic", and "Off", indicating continuous lighting mode, automatic lighting mode, and forced light-off mode.

In the automatic switch 10 of the embodiment, the continuous lighting mode, the automatic lighting mode, and the forced light-off mode are sequentially switched each time the operation switch 2a is operated. The mode display unit 6 displays "continuous start" in the continuous lighting mode, "automatic" in the automatic lighting mode, and "off" in the forced-off mode. The automatic switch 10 repeats the mode transition in the order of "off", "automatic", and "continuous start" in response to the operation of the switch 2a.

In the case of the forced light-off mode, for example, the second light-emitting diode 6a at the left end corresponding to "OFF" is turned on (for example, a red light). In the case of the automatic illumination mode, for example, the second light-emitting diode 6a in the center corresponding to "automatic" is turned on (for example, a green light). The second light-emitting diode 6a in the center may also be "automatic" by flashing a green light between the predetermined lighting holding times. The second second LED 6a in the center can also shorten the flash interval as the end of the predetermined lighting stay time is approached. In the case of the continuous lighting mode, for example, the second light-emitting diode 6a corresponding to the "continuous start" is turned on (for example, a bright blue light). In this manner, the mode display unit 6 can visually display the continuous lighting mode, the automatic lighting mode, and the forced light-off mode by the difference between the lighting, the light-off, the flashing, and the color of the second light-emitting diode 6a. .

The control unit 4 has a first operation mode and a second operation mode. In the first operation mode, in the automatic illumination mode, the exhaust fan 53 and the illumination load 52 are simultaneously driven to be turned on, and after the delay operation time elapses, the exhaust fan 53 is stopped. In the second operation mode, after the predetermined lighting holding time elapses, the lighting load 52 is turned off, the exhaust fan 53 is driven simultaneously with the light-off, and the exhaust fan is driven after the delay operation time elapses. 53 stops. The control unit 4 executes the first operation mode by the first control and the second operation mode by the second control.

The control unit 4 switches between the first operation mode and the second operation mode in response to the operation time length of the operation switch 2a. The control unit 4 determines, for example, a case where the operation switch 2a is continuously pressed for a predetermined length of time (for example, one second) or a short operation of the operation switch 2a, and the operation mode is switched. (for example, continuous lighting mode, automatic lighting mode, forced light-off mode, first operation mode, and second operation mode). For example, each time the operation switch 2a is pressed, the control unit 4 switches between the first operation mode and the second operation mode. Each time the operation switch 2a is short-pressed, the control unit 4 switches between the continuous lighting mode, the automatic lighting mode, and the forced light-off mode. For example, the control unit 4 may be configured to select the first control and the second control depending on whether or not the number of times of pressing the operation switch 2a for a predetermined period of time (for example, two seconds) is equal to or greater than a predetermined number of times.

The control unit 4 is configured to emit the operation display unit 8 in the ON control of the second switch 5b without selecting the first operation mode or the second operation mode. In the automatic switch 10 shown in FIG. 1, the operation display unit 8 has a character string "exhaust fan" that is illuminated by the first light-emitting diode 8a. The ease of understanding of the driving state of the exhaust fan 53 is improved by the combination of the display of the character string and the light emission.

The control unit 4 causes the operation display unit 8 to emit light during the ON control of the second switch 5b, unlike the control of the first operation mode and the second operation mode. The automatic switch 10 can visually understand the exhaust gas for a user who does not understand the difference between the first operation mode and the second operation mode, compared to the mode in which the current mode is displayed in the first operation mode and the second operation mode. The operating state of the fan 53. Therefore, the utility of the automatic switch 10 is improved. Since the operation switch 2a is switched between the first operation mode and the second operation mode, the automatic switch 10 can be made smaller by the space for setting the dedicated switch for switching the first operation mode and the second operation mode.

The cosmetic cover 1d is disposed below the manual operation unit 2a1. The cosmetic cover 1d is provided with an opening window portion 1db at a position facing the opening 11bm of the covering body 11b. The cosmetic cover 1d covers the body 11 such that the opening window portion 1db corresponds to the opening 11bm. The cosmetic cover 1d has a projection 1dk that protrudes more than the front surface 2ab of the manual operation portion 2a1.

The automatic switch 10 can be provided with a setting operation unit 7 for setting the detection sensitivity of the thermal sensor unit 1. The setting operation unit 7 is not limited to the detection sensitivity of the setting thermal sensor unit 1, and may be configured to be able to set the lighting holding time in the automatic illumination mode. A part of the setting operation unit 7 is exposed on the first surface 11bp of the body 11. The setting operation unit 7 exposed on the first surface 11bp of the body 11 is covered by the manual operation unit 2a1. The setting operation unit 7 includes a first setting unit 7a, a second setting unit 7b, a third setting unit 7c, and a fourth setting unit 7d.

The first setting unit 7a includes a knob attached to the first circuit board 16a, and a first grip 7a1 for rotating the operating shaft of the adjusting member. The first grip 7a1 of the first setting portion 7a protrudes from the first surface 11b of the body 11 by the fourth opening 11bh of the body 11. The first setting unit 7a is configured to set the lighting holding time in the automatic lighting mode. The lighting retention time can be set, for example, in the range of 10 seconds to 30 minutes.

The second setting unit 7b includes a knob attached to the first circuit board 16a and a second grip 7b1 for rotating the operation shaft of the knob. The second grip 7b1 of the second setting portion 7b protrudes from the first surface 11b of the body 11 through the fifth opening 11bi of the body 11. For example, the second setting unit 7b is configured to set the brightness sensitivity level of the brightness sensor 1s in the range of "dark" to "bright". The "darkness" of the brightness sensitivity level is, for example, an illuminance of 5 lux or less; and the "brightness" is, for example, an illuminance of 100 lux or more.

The second grip 7b1 of the second setting unit 7b can be set to the "closed" position so that the control unit 4 does not control based on the illuminance signal from the brightness sensor 1s. When the second setting unit 7b is set to "OFF", it is possible to prevent the lighting load 52 (for example, the lamp in the bathroom) from being turned on when the periphery of the automatic switch 10 is bright, and to seek energy saving. The automatic switch 10, for example, by adjusting the threshold value of the brightness by the second setting unit 7b, can obtain the same effect as the detection sensitivity of the set thermal sensor unit 1 for detecting the presence or absence of the human body. In other words, the second setting unit 7b can function as the setting operation unit 7 that sets the detection sensitivity of the thermal sensor unit 1. The setting operation unit 7 may be configured to directly adjust the detection sensitivity of the thermal sensor unit 1. For example, the setting operation unit 7 can directly adjust the detection sensitivity of the thermal sensor unit 1 by adjusting the degree of amplification of the amount of change in heat detected by the thermal sensor unit 1.

The third setting unit 7c includes a knob attached to the first circuit board 16a and a third grip 7c1 for rotating the operation shaft of the knob. The third grip 7c1 of the third setting portion 7c protrudes from the first surface 11b of the body 11 by the second opening 11bx of the body 11. The automatic switch 10 is configured, for example, so that the illumination load 52 can be dimmed in a dimming state that is weaker than the rated output lighting (100%) in the midnight time zone, and the third setting unit 7c, for example, It is configured to set a dimming duration in which the illumination load 52 is turned on in the dimmed state. The third setting unit 7c is configured to set the dimming duration to a plurality of stages of, for example, 0 hours, 4 hours, 5 hours, 6 hours, 7 hours, and 8 hours. The control unit 4 dims the illumination load 52 when the user enters the restroom at the late-night mode time from the start time of the preset to the end of the dimming duration. This dimming control suppresses the user's waking and suppresses the user's feeling of glare. Further, the automatic switch 10 is configured to adjust the degree of dimming of the illumination load 52 in the midnight time zone by the first switch unit 2e1 or the second switch unit 2e2. When the first switch unit 2e1 performs ON control, the control unit 4 performs dimming control to make the illumination load 52 brighter. When the second switch unit 2e2 performs ON control, the control unit 4 performs dimming control to make the illumination load 52 darker.

The fourth setting unit 7d includes a knob attached to the first circuit board 16a and a fourth grip 7d1 for rotating the operation shaft of the knob. The fourth grip 7d1 of the fourth setting portion 7d protrudes from the first surface 11b of the body 11 by the third window hole 11bq of the body 11. The fourth setting unit 7d is configured, for example, to set a delay operation time for stopping the exhaust fan 53 that is driven after the completion of the lighting holding time. The delayed operation time of the fourth setting unit 7d can be set, for example, at a number of stages of 5 minutes, 10 minutes, 15 minutes, or 30 minutes. The fourth setting unit 7d can be used to set the forced OFF of the exhaust fan 53 and/or the continuous driving of the exhaust fan 53.

Next, the first operation mode (first control) of the automatic switch 10 will be described with reference to Fig. 14 .

The automatic illumination mode and the first operation mode are selected by operating the switch 2a. In the first operation mode, the automatic switch 10 causes the lighting of the lighting load 52 to start interlocking with the start of driving of the exhaust fan 53, and is performed even if it is synchronized. In FIG. 14, the period from the time t6 to the time t12 is set to the midnight mode time zone. The period from the time t0 to the time t12 is a state in which the ambient illuminance is dark. The period from the time t12 to the time t16 is a state in which the ambient illuminance is bright.

At time t1, the thermal sensor unit 1 of the automatic switch 10 detects a change in heat and outputs a sensor signal. The control unit 4 controls the second shutter 5b in accordance with the sensor signal from the thermal sensor unit 1 so that the illumination load 52 is turned on. The control unit 4 soft-starts the lighting load 52 at time t1, and slowly or stepwise increases the amount of light emitted by the illumination load 52 with time lapse, and makes it fully illuminated at time t2. (100%). The length of time from the time t1 to the time t2 during the soft start period can be set, for example, to 2.5 seconds. For example, by controlling the bidirectional three-terminal thyristor of the second opening and closing element 5b1 by the second opening/closing control unit 5b2, the rush current to the illumination load 52 can be suppressed, and the illumination load 52 can be soft-started.

In the example of Fig. 14, the predetermined lighting stay time is the length of time from the time t1 to the time t4. When the control unit 4 approaches the end of the lighting holding time (time t4), the amount of light emitted from the illumination load 52 is lowered at time t3. The period from the time t3 to the time t4 of the predetermined time before the end of the self-lighting time period can be set to, for example, 6 seconds. The control unit 4 adjusts the illumination load 52 to the dimming state (for example, 50%) in order to predict the turning off of the illumination load 52 during the period from the time t3 to the time t4. The control unit 4 controls the second shutter 5b at time t4 so that the illumination load 52 is turned off. In this manner, the automatic switch 10 causes the lighting load 52 to illuminate until the time point (t4) at which the predetermined lighting stay time elapses.

At time t1, the control unit 4 drives the exhaust fan 53 and the illumination load 52 to be simultaneously turned on. The control unit 4 operates the exhaust fan 53 from the time when the illumination load 52 is turned off (time t4) to the time t5. The control unit 4 controls the first shutter 5a at time t5 to turn off the exhaust fan 53. The control unit 4 causes the operation display unit 8 to emit light during the driving of the exhaust fan 53.

Next, a period from the time t6 at which the late-night mode time zone is set to the time t12 will be described. At time t7, when the thermal sensor unit 1 detects a change in heat, the control unit 4 soft-starts the illumination load 52. The control unit 4 dims the illumination load 52 to an output of 20% between the time t8 and the time t9 when the ambient illuminance is dark and the night mode is present. The control unit 4 dims the illumination load 52 to an output of 10% in order to predict the turning off of the illumination load 52 at time t9. The control unit 4 turns off the illumination load 52 at time t10. The control unit 4 drives the exhaust fan 53 at time t7. The control unit 4 operates the exhaust fan 53 from the time when the illumination load 52 is turned off (time t10) to the time t11. The control unit 4 controls the first shutter 5a at time t11 to turn off the exhaust fan 53.

The control unit 4 does not turn on the illumination load 52 during the period from the time t12 when the ambient illuminance is bright to the time t16. At time t13, the control unit 4 receives the sensor signal of the thermal sensor unit 1, drives the exhaust fan 53, and continues the driving of the exhaust fan 53 until time t15. Time t14 is the time when the lighting holding time elapses from time t13. The control unit 4 causes the operation display unit 8 to emit light during the driving of the exhaust fan 53. In this manner, the control unit 4 drives the exhaust fan 53 in response to the sensor signal from the thermal sensor unit 1 regardless of the ambient illuminance.

Next, the second operation mode (second control) of the automatic switch 10 will be described with reference to Fig. 15 .

The automatic illumination mode and the second operation mode are selected by operating the switch 2a. Time t20 to t36 of Fig. 15 correspond to times t0 to t16 of Fig. 14, respectively.

In the second operation mode, the control unit 4 performs lighting and turning off of the illumination load 52 in the same manner as in the first operation mode. In the second operation mode, the control unit 4 differs in the point at which the start of the driving of the exhaust fan 53 differs from the first operation mode. The control unit 4 drives the exhaust fan 53 from the time point when the lighting holding time of the lighting load 52 is completed, and stops when the delay operation time elapses. The control unit 4 causes the operation display unit 8 to emit light during the driving of the exhaust fan 53.

In the example of FIGS. 14 and 15, the control unit 4 starts the light emission of the operation display unit 8 in synchronization with the ON control (t1, t7, t13, t24, t30, and t34) of the second shutter 5b, and the second shutter 5b. The OFF control (t5, t11, t15, t25, t31, and t35) is synchronized to stop the light emission of the operation display unit 8. In the first control, the control unit 4 starts the ON control of the second shutter 5b and the light emission of the operation display unit 8 in synchronization with the sensor signals (t1, t7, and t13) from the thermal sensor unit 1. The light emission of the operation display unit 8 is stopped in synchronization with the OFF control (t5, t11, t15) of the second shutter 5b. In the second control, the control unit 4 starts ON control of the second switch 5b at a time point (t23, t30, t34) delayed from the time point (t21, t27, t33) at which the sensor signal is received. The light emission from the operation display unit 8 is stopped in synchronization with the OFF control (t25, t31, t35) of the second shutter 5b, and the light emission of the operation display unit 8 is stopped. In the first control and the second control, when the brightness detected by the brightness sensor 1s is brighter than the reference value (t12-t16, t32-t36), the control unit 4 is not related to the sensor unit. The sensor signal (t13, T33) of 1 does not cause the illumination load 52 to illuminate.

The control unit 4 can be provided with a computer-readable memory medium such as a ROM or an EEPROM. The processor (for example, a CPU) of the control unit 4 is configured to realize the function of the control unit 4 by executing a computer readable command stored in a computer readable memory medium.

The invention is not limited to the illustrated form. For example, the exemplified features are not to be construed as essential to the features of the invention, and the subject matter of the present invention may also be characterized by fewer features of the particular embodiments disclosed. The invention is shown by the scope of the patent application, and the invention also includes all modifications made within the scope of the claims.

1‧‧‧ Thermal Sensors Division
1a‧‧‧Infrared sensor
1b‧‧‧Sensor Coverage
1d‧‧‧ Makeup cover
1db‧‧‧Open window
1dk‧‧‧ protrusion
1k‧‧‧ prominent parts
1r‧‧‧Optical components
1s‧‧‧Brightness Sensor
2‧‧‧Input Identification Department
2a‧‧‧Operation switch
2a1‧‧‧Manual operation department
2a2‧‧‧Hands
2a3‧‧‧ finger touch recess
2aa‧‧‧Switch body
2ab‧‧‧ front surface
2ac‧‧‧Operator
2d‧‧‧plate spring
2e1‧‧‧1st switch
2e2‧‧‧2nd switch
2f‧‧‧Handle
2f1‧‧‧ openings
2f2‧‧‧ card hole
2f3‧‧‧1st through hole
2f4‧‧‧2nd through hole
2f5‧‧‧Outstanding claws
2fs‧‧‧5th cylindrical
2ft‧‧‧2nd cylindrical protrusion
2g‧‧‧Makeup cover
2g1‧‧‧Transparent components
2g2‧‧‧floor
2g3‧‧‧ claws
2g4‧‧‧Bulge
2g5‧‧‧Light diffusing layer
2gc‧‧‧2nd through hole
2gd‧‧‧1st through hole
4‧‧‧Control Department
4c‧‧‧DC stabilized power supply
5a‧‧‧1st opener
5a1‧‧‧1st opening and closing element
5a2‧‧‧1st opening and closing control department
5b‧‧‧2nd switch
5b1‧‧‧2nd opening and closing element
5b2‧‧‧2nd opening and closing control department
6‧‧‧ mode display
6a‧‧‧2nd LED
7‧‧‧Setting the operation department
7a‧‧‧1st setting department
7a1‧‧‧1st grip
7b‧‧‧2nd setting department
7b1‧‧‧2nd grip
7c‧‧‧3rd setting department
7c1‧‧‧3rd grip
7d‧‧‧4th setting department
7d1‧‧‧4th grip
8‧‧‧Action display department
8a‧‧‧1st LED
10‧‧‧Automatic switch (automatic switch with thermal sensor)
11‧‧‧ body
11a‧‧‧ Ontology
11ac‧‧‧ snap protrusion
11b‧‧‧ Coverage
11bb‧‧‧ side wall
11bc‧‧‧ highlights
11bd‧‧‧Installation claws
11be‧‧‧Flex film
11bf‧‧‧ snap hole
11bg‧‧‧cut into the ditch
11bh‧‧‧4th hole
11bi‧‧‧5th window hole
11bj‧‧‧7th hole
11bk‧‧‧ card ditch
11bm‧‧‧ openings
11bn‧‧‧Axis
11bo‧‧‧6th window hole
11bp‧‧‧ first surface
11bq‧‧‧3rd window hole
11br‧‧‧1st flexure
11bs‧‧‧4th cylindrical
11bt‧‧‧6th cylindrical
11bu‧‧‧1st cylindrical protrusion
11bw‧‧‧3rd cylindrical protrusion
11bx‧‧‧2nd window hole
11by‧‧‧2nd flexure
11bz‧‧‧3rd flexure
11c‧‧‧ Terminal
11c1‧‧‧1st power terminal
11c2‧‧‧2nd power terminal
11c3‧‧‧1st load terminal
11c4‧‧‧2nd load terminal
11c5‧‧‧3rd load terminal
11c6‧‧‧4th load terminal
11ca‧‧‧Lock spring
11cb‧‧‧ terminal board
11cc‧‧‧ button
16‧‧‧Development Department
16a‧‧‧1st circuit substrate
16aa‧‧‧Electronic parts
16b‧‧‧Electrical insulation board
16c‧‧‧2nd circuit substrate
17‧‧‧Installation box
17a‧‧‧ long film
17aa‧‧‧1st hole
17ab‧‧‧ appliance mounting hole
17ac‧‧‧ long hole
17ad‧‧‧ screw hole
17b‧‧‧ short film
51‧‧‧Commercial power supply
52‧‧‧Lighting load
53‧‧‧Exhaust fan

Fig. 1 is a front elevational view showing an automatic switch with a thermal sensor according to an embodiment. Fig. 2 is a block diagram showing an automatic switch with a thermal sensor according to an embodiment. Fig. 3 is a perspective view of an automatic switch with a thermal sensor according to an embodiment. Fig. 4 is an exploded perspective view showing an automatic switch with a thermal sensor according to an embodiment. Fig. 5 is a front view for explaining a manual operation portion of an automatic switch to which a thermal sensor is attached according to an embodiment. Fig. 6 is a front view for explaining a manual operation portion of an automatic switch to which a thermal sensor is attached according to an embodiment. Fig. 7 is a side view showing another essential part of the automatic switch with a thermal sensor according to the embodiment. Fig. 8 is a cross-sectional view showing the automatic switch attached to the thermal sensor along the line A-A of Fig. 1. Fig. 9 is a cross-sectional view showing the automatic switch attached to the thermal sensor along the line B-B of Fig. 1. Fig. 10 is a partially enlarged view showing the automatic switch with a thermal sensor surrounded by a dotted circle in Fig. 9. Fig. 11 is a cross-sectional view showing the automatic switch attached to the thermal sensor along the line C-C of Fig. 1. FIG. 12 is a partially enlarged view of the automatic switch with a thermal sensor surrounded by a dotted circle in FIG. 11. FIG. Fig. 13 is a rear elevational view showing the main part of the automatic switch to which the thermal sensor is attached in the embodiment. Fig. 14 is a timing chart for explaining the operation of the automatic switch with the thermal sensor according to the embodiment. Fig. 15 is a timing chart for explaining the operation of the automatic switch with the thermal sensor according to the embodiment.

T0~t16‧‧‧ moment

Claims (6)

The utility model relates to an automatic switch with a thermal sensor, which is used together with a lighting load and an exhaust fan, and is characterized in that: a thermal sensor unit detects heat generated from a human body; and a control unit is provided according to the thermal sensor unit. a sensor signal, wherein the output controls a lighting/lighting of the lighting load and a control signal for driving/stopping the exhaust fan; and the first switch turns ON/OFF the power of the lighting load according to the control signal Controlling, the second switch is configured to turn ON/OFF control of the power supply to the exhaust fan according to the control signal; and the operation display unit displays ON and OFF of the second switch by the presence or absence of light emission; wherein The control unit may select the first control and the second control: the first control is for performing ON control of the first switch, and is used for performing ON control of the second switch; the second control is for The first switch performs ON control, and the first switch is OFF-controlled, and then the second switch is used for ON control. The control unit causes the operation display unit to perform ON control of the second switch. Glowing. An automatic switch for attaching a thermal sensor according to the first aspect of the invention, wherein the control unit starts the light emission of the operation display unit in synchronization with the ON control of the second switch, and the OFF of the second switch The synchronization is controlled to stop the illumination of the operation display unit. An automatic switch with a thermal sensor attached to the first aspect of the patent application, wherein in the first control, the control unit synchronizes with the sensor signal from the thermal sensor unit to start the first 1 ON control of the shutter, ON control of the second shutter, and light emission from the operation display unit, Further, after the delay operation time elapses, the second shutter is OFF-controlled, and the light emission of the operation display unit is stopped in synchronization with the OFF control of the second shutter. An automatic switch with a thermal sensor attached to the first aspect of the patent application, wherein in the second control, the control unit synchronizes with the sensor signal from the thermal sensor unit to start the first 1 ON control of the switch, after the lighting holding time is passed, the first switch is OFF-controlled, and the time period from the time when the sensor signal is received is delayed for a period of time, and then the second switch is started. The ON control and the light emission of the operation display unit are further synchronized with the OFF control of the second switch to stop the light emission of the operation display unit. An automatic switch provided with a thermal sensor according to any one of claims 1 to 4, further comprising a brightness sensor for detecting ambient brightness; and in the first control and the second control, When the brightness detected by the brightness sensor is brighter than the reference value, the control unit does not have the sensor signal from the thermal sensor portion without lighting the illumination load. The automatic switch with a thermal sensor according to any one of claims 1 to 4, which has a plurality of modes including an automatic illumination mode, and further includes: a mode display portion for visually displaying the a current mode in which an automatic switch of the thermal sensor is attached; wherein the control unit selects the first control and the second control: the first control is for the current mode of the automatic switch to which the thermal sensor is attached In the automatic illumination mode, ON control of the first switch is performed, and ON control of the second switch is performed; the second control is used for automatic switch of the attached thermal sensor When the current mode is the automatic illumination mode, the first switch is ON-controlled, and after the first switch is OFF-controlled, the second switch is ON-controlled; and the control unit causes the control The mode display unit visually displays the current mode of the automatic switch to which the thermal sensor is attached, and in the automatic illumination mode, the operation display unit emits light in the ON control of the second switch.