JP7495670B2 - Radio wave sensor and lighting equipment - Google Patents

Description

An embodiment of the present invention relates to a radio wave sensor in which wiring is connected to a sensor substrate and a lighting fixture equipped with the same.

Conventionally, there are lighting fixtures that are installed on the installation surface of a staircase landing to illuminate the stairs and the landing. Such lighting fixtures are equipped with a radio wave sensor that detects people moving up the stairs, and may be equipped with a function for dimming control in response to the detection of a moving object such as a person. The radio wave sensor contains a sensor board inside a synthetic resin case consisting of a support body and a cover, and wiring connected to the sensor board is connected to a control unit. In the case of such radio wave sensors, it is desirable to make it easy to assemble and to make it easy to pull out the wiring connected to the radio wave sensor to the outside of the case.

JP 2018-101550 A

The problem that this invention aims to solve is to provide a radio wave sensor and lighting fixture that is easy to assemble and has wiring that can be easily pulled out to the outside.

The radio wave sensor of the embodiment includes a sensor board, wiring connected to the sensor board, a first case body, and a second case body that houses the sensor board between the first case body. The first case body has a first surface, a second surface, and a gap. The first surface has a claw portion. The second surface extends in a direction intersecting the first surface. The gap is located between the first surface and the second surface, separates the first surface and the second surface, and the wiring is inserted through the gap. The second case body has a receiving portion and a hole portion, and is attached to the first case body while covering at least a portion of the first case body. The receiving portion is engaged with the claw portion. The hole portion allows the wiring inserted through the gap to be drawn out.

The radio wave sensor of the embodiment is expected to be easy to assemble and to make it easier to pull out the wiring to the outside.

FIG. 2 is an exploded perspective view of the radio wave sensor according to the embodiment; FIG. 2 is an exploded perspective view of the radio wave sensor shown in the opposite direction to that of FIG. 1 . FIG. FIG. 4 is a perspective view of the radio wave sensor shown in the opposite direction to that of FIG. 3 . FIG. FIG. 6 is a cross-sectional view of the radio wave sensor taken in a direction perpendicular to FIG. 5 . FIG. 4 is a perspective view showing a state in which a second case body is attached to a mounting portion of the radio wave sensor. FIG. 2 is a perspective view showing a state in which the lighting fixture including the radio wave sensor is mounted on a wall. FIG. 2 is a perspective view showing the state in which the lighting fixture is attached to a ceiling surface.

One embodiment will be described below with reference to Figures 1 to 9.

Lighting fixture 10 is shown in Figures 8 and 9. Lighting fixture 10 is a staircase light that is installed on a mounting surface such as a wall or ceiling surface of a staircase landing and is used to illuminate the stairs or landing. Furthermore, lighting fixture 10 is an emergency lighting fixture that performs dimming control in response to the detection of a moving object such as a person moving on the stairs, and is turned on by an emergency power source in the event of a power outage in the normal power source.

Note that Fig. 8 shows the lighting fixture 10 mounted on a wall surface, and Fig. 9 shows the lighting fixture 10 mounted on a ceiling surface, but the following description will mainly focus on the lighting fixture 10 mounted on a wall surface.

The lighting fixture 10 is provided in an elongated shape along the width direction. The lighting fixture 10 includes a housing 11, a light source unit 12 that is a main light source or a regular light source and an emergency light unit 13 that are arranged on the front side of the housing 11, and a terminal block, a power supply unit 15 (Figure 7), a radio wave sensor 16, a sensor control unit, an emergency lighting unit, a battery, etc. that are arranged inside the housing 11.

The housing 11 includes a device body 23 and a cover 24 that is removably attached to the front of the device body 23. The front of the housing 11 is formed with an inclined surface 25 that is inclined toward one side in the short side direction.

The fixture body 23 is open on the front side and is formed in an elongated shape along the width direction. The light source unit 12 and emergency light unit 13 are arranged in the lower area, which is one of the short sides of the front side of the fixture body 23, and a front opening that is opened and closed by a cover 24 is formed in the upper area, which is the other side. The fixture body 23 is attached to a bolt that protrudes from the installation surface. The fixture body 23 is attached to the installation surface by passing the bolt through a mounting hole provided in the back part, which serves as the mounting surface, and screwing a nut onto the tip of the bolt and tightening it.

The cover 24 also has a front portion 30 and a side portion 31 bent from the front portion 30. The cover 24 covers the front opening of the device body 23 with the front portion 30, and the side portion 31 is positioned so as to overlap the upper side portion of the device body 23, and is detachably attached to the device body 23 with screws or the like.

The front surface 30 of the cover 24 is formed with an inclined surface 25 on the front side of the housing 11. This inclined surface 25 also functions as a reflective surface that reflects the light from the light source unit 12. In this embodiment, the front end side of the side surface 31 of the cover 24 is inclined toward the front surface 30, but is not limited to an inclined configuration.

The light source unit 12 is provided in an elongated shape along the width direction of the lighting fixture 10. The light source unit 12 includes a chassis, a light-emitting module attached to the front surface of the chassis, and a light-transmitting cover 35 attached to the chassis to cover the light-emitting module, and is attached to the fixture body 23 by an attachment spring in parallel with the inclined surface 25 on the front surface of the housing 11.

The emergency light unit 13 is attached to the front of the fixture body 23, aligned on both sides of the light source unit 12 in the longitudinal direction. The emergency light unit 13 includes an emergency light source 37, an emergency light source cover to which the emergency light source 37 is attached, and a front frame 38, which is a decorative frame.

The terminal block is connected to an external power supply line that is pulled into the fixture body 23. The terminal block is electrically connected to the power supply unit 15 (Figure 7), the sensor control unit, and the emergency lighting unit by internal wiring, which is an electric wire.

The power supply unit 15 (Fig. 7) has an external power input section, which is the primary side, electrically connected to the terminal block by internal wiring, and a lighting power output section, which is the secondary side, electrically connected to the light source unit 12 by connection wiring. The power supply unit 15 (Fig. 7) converts an external power source, such as an AC power source, supplied through the terminal block into a lighting power source, such as a DC power source, for lighting the light-emitting element of the light-emitting module of the light source unit 12, and supplies it to the light-emitting module.

The radio wave sensor 16 transmits detection radio waves to a specified detection range, receives reflected waves of the transmitted radio waves by a moving object, and detects the presence or absence of a moving object within the detection range in the area in front of the lighting fixture 10. In this embodiment, the radio wave sensor 16 is a human presence sensor that detects people. The radio wave sensor 16 protrudes forward from a sensor hole 40 formed in the cover 24. The radio wave sensor 16 is also configured so as not to interfere with the external power supply line that is drawn into the fixture body 23.

The sensor control unit is electrically connected to the terminal block by internal wiring and operates by receiving an external power supply. The sensor control unit is electrically connected to the radio wave sensor 16 by internal wiring and controls the radio wave sensor 16 to detect the presence of a moving object such as a person. The sensor control unit is electrically connected to the power supply unit 15 (Figure 7) by internal wiring and sends control signals such as dimming signals to the power supply unit 15 (Figure 7) in response to the detection of the presence of a moving object by the radio wave sensor 16.

The emergency lighting unit is electrically connected to the terminal block by internal wiring and operates when supplied with an external power source. It is also electrically connected to the battery by internal wiring and controls the charging and discharging of the battery. The emergency lighting unit includes a power outage detection circuit that detects a power outage in the external power source, a charging circuit that charges the battery when supplied with external power, and an emergency lighting circuit that supplies lighting power to the emergency light source 37 using the battery power when the external power source is out. The emergency lighting unit also includes an inspection unit 42 that issues an instruction to inspect the emergency lighting including the emergency light source 37 and the battery, and an inspection circuit that executes an inspection mode in response to this inspection instruction.

The inspection unit 42 is disposed on the device body 23 facing an inspection window 43 formed in the cover 24, and includes a receiving unit that receives wireless signals such as infrared signals transmitted from a terminal such as an inspection remote control, a transmitting unit that transmits the inspection results to the terminal, an inspection switch for manually instructing an inspection, and a monitor lamp that displays the inspection results. Through the inspection unit 42, it is possible to periodically check whether the emergency light source 37 is operating normally using battery power.

The battery is a rechargeable storage battery and is electrically connected to the emergency lighting unit by internal wiring.

Next, the configuration of the radio wave sensor 16 will be explained.

The radio wave sensor 16 shown in Figures 1 to 7 has a sensor board 45, a harness 46 that electrically connects the sensor board 45 and the sensor control unit, and a case 49 that includes a lower case 47 that is a first case body that holds the sensor board 45, and an upper case 48 that is a second case body that holds the lower case 47. The sensor board 45 is held from one side by the lower case 47, and is covered from the other side, which is the opposite direction, by the upper case 48. In the following explanation of the radio wave sensor 16, the one side is referred to as the lower side, and the other side is referred to as the upper side. Also, when viewed from the top and bottom, the longitudinal direction of the radio wave sensor 16 is referred to as the both side direction, and the short side direction that is perpendicular to that is referred to as the both end directions. In the figures, the vertical direction is indicated by arrow D1, the both side directions are indicated by arrow D2, and the both end directions are indicated by arrow D3.

The sensor board 45 includes a board body 50. In this embodiment, the board body 50 is formed in a rectangular flat plate shape. An antenna 51 is formed on one main surface 50a of the board body 50. A radio wave transmitting antenna and a receiving antenna are set in the antenna 51 in a pair. In addition, a circuit section 52 electrically connected to the antenna 51 and a connector receiving section 53, which is a connector pin electrically connected to the circuit section 52 and detachably receives the harness 46, are arranged on the other main surface 50b of the board body 50. The connector receiving section 53 is arranged along the short side direction of the board body 50 at one end of the longitudinal direction of the board body 50, and the circuit section 52 is arranged adjacent to this connector receiving section 53. The circuit section 52 is formed in a rectangular shape and covers most or more than half of the other main surface 50b of the board body 50.

In this embodiment, the sensor board 45 is housed inside the case 49 with one main surface 50a of the board body 50 on the upper side and the other main surface 50b on the lower side. In the example shown, the sensor board 45 is arranged inside the case 49 longitudinally in both directions. In other words, the long sides of the board body 50 of the sensor board 45 run along both sides, and the short sides run along both ends.

The harness 46 has multiple wires 55, a connector 56 that holds these wires 55, and a tube 57, which is a sleeve that bundles these wires 55 together.

One end of each of the wiring 55 is electrically and mechanically connected to a terminal of the connector 56. The wiring 55 is electrically connected to the circuit section 52 of the sensor board 45 by mechanically connecting the connector 56 to the connector receiving section 53.

The connector 56 is formed in a flat rectangular parallelepiped shape. The upper end of the connector 56 is detachably connectable to the connector receiving portion 53, and when connected to the connector receiving portion 53, the connector 56 extends downward in the surface direction of the other main surface 50b of the sensor substrate 45. The wiring 55 is led out from the lower end of the connector 56. The connector 56 has a large number of terminals compared to the number of wirings 55. Therefore, the connector 56 has terminals to which the wiring 55 is connected and terminals to which the wiring 55 is not connected, that is, remaining terminals. In this embodiment, the other end of the connector 56 has a placement area 56a where the wiring 55 is placed adjacent to each other and a non-placement area 56b where the wiring 55 is not placed adjacent to each other. The non-placement area 56b is a planar area where the wiring 55 is not placed.

The tube 57 is formed into a long cylindrical shape. Each wire 55 is inserted into the inside of the tube 57, and the other end of each wire 55 is led out to the outside of the case 49 via the tube 57. A retaining body 58 that prevents the tube 57 from coming off the case 49 (lower case 47) is attached to the tube 57. The retaining body 58 is formed into an annular shape and surrounds the outer periphery of the tube 57.

The lower case 47 is formed from a synthetic resin such as polycarbonate. The lower case 47 integrally has a first portion 60 located on the upper side and a second portion 61 located on the lower side. The lower case 47 is formed with an open lower portion.

The first portion 60 has a board support portion 63 that supports the sensor board 45. The board support portion 63 has a flat upper portion, and the circuit portion 52 of the sensor board 45 is placed on the upper portion. A reinforcing rib 64 is formed, for example, in a cross shape, on the lower portion of the board support portion 63. The board support portion 63 is a partition portion that separates the sensor board 45 from the space below it. The board support portion 63 is formed in a rectangular shape. An end wall portion 66 and side wall portions 67, 67 are formed along one long side and both short sides of the board support portion 63. The end wall portion 66 and the side wall portion 67 are formed in a U-shape when viewed from above or below. At the upper ends of the end wall portion 66 and the side wall portions 67, 67, a claw-shaped restriction portion 69 that restricts the position of the upper portion of the sensor board 45 is formed.

The end wall portion 66 and one side wall portion 67 (the right side in Figs. 1, 2, and 5) are formed to be continuous with one long side and one short side of the board support portion 63. The other side wall portion 67 (the left side in Figs. 1, 2, and 5) is located away from the other short side of the board support portion 63. Therefore, an arrangement space 71 is formed between the board support portion 63 and the other side wall portion 67. The arrangement space 71 communicates with the space above the board support portion 63 in which the sensor board 45 is located and the space below it. The connector 56 of the harness 46 connected to the connector receptacle 53 of the sensor board 45 is located in the arrangement space 71.

At the other short side of the board support portion 63, an extension portion 73 is integrally formed, extending downward opposite the other side wall portion 67. The extension portion 73 is formed with a retaining portion 75 that prevents the connector 56 from falling out. The retaining portion 75 prevents the connector 56 from falling out downward relative to the connector receiving portion 53 of the sensor board 45 by regulating the position of the lower end portion of the connector 56. In this embodiment, the retaining portion 75 has a protrusion 77 formed on the extension portion 73 and a connecting portion 78 that connects the extension portion 73 and the other side wall portion 67.

The protrusion 77 protrudes from the extension 73 toward the other opposing side wall 67. Thus, the protrusion 77 is formed so as to narrow the width of the arrangement space 71 on both sides. The protrusion 77 is formed at the lower end, which is the tip of the extension 73, and is positioned opposite the lower end of the connector 56.

The connecting portion 78 is formed to extend linearly between the extension portion 73 and the other side wall portion 67. The connecting portion 78 is formed to narrow the width of the arrangement space 71 at both ends. As shown in FIG. 4, the connecting portion 78 is formed between the lower end of the extension portion 73 and the lower end of the other side wall portion 67, and is located opposite the non-arrangement area 56b at the lower end of the connector 56.

As shown in Figures 1, 2, 5 and 6, the second portion 61 has an enlarged portion 80 at its upper end, which protrudes outward in a stepped manner relative to the end wall portion 66 and the side wall portions 67, 67 of the first portion 60. The enlarged portion 80 is formed with a first surface portion 81, a second surface portion 82, and a third surface portion 83 that extend downward.

The first surface portion 81 is located on one side of the enlarged portion 80 in the both end directions. The first surface portion 81 is located approximately parallel to the end wall portion 66 at a position away from one side of the both end directions. That is, the first surface portion 81 is formed in a plate shape having surfaces in the up-down and both side directions, and the thickness direction is the both end direction. The first surface portion 81 has an upper end portion, which is the base end portion on the board support portion 63 side, as a fixed end, and a lower end portion, which is the tip end, as a free end. The first surface portion 81 is formed in a tongue shape. The first surface portion 81 is formed with a claw portion 81a that engages the lower case 47 with the upper case 48. In this embodiment, the claw portion 81a is disposed closer to the lower end than the center portion of the first surface portion 81 in the up-down direction. The claw portion 81a has a triangular cross section in which the amount of protrusion from the first surface portion 81 increases toward the lower side. In this embodiment, the first surface portion 81 is formed in a pair separated from each other in the both side directions.

The second surface portion 82 is located on both sides of the expanded portion 80. The second surface portion 82 is located approximately parallel to the side wall portions 67, 67 at a position separated in both directions from the side wall portions 67, 67. That is, the second surface portion 82 is formed in a plate shape having surfaces in the up-down direction and in both end directions, and the thickness direction is in both end directions. The second surface portion 82 extends in a direction intersecting with the first surface portion 81. The second surface portion 82 has an upper end portion, which is the base end portion on the board support portion 63 side, as a fixed end, and a lower end portion, which is the tip end, as a free end. A gap 85 is formed between the second surface portion 82 and the first surface portion 81. The edge portion of the second surface portion 82 is offset to one side in the both end direction with respect to the side edge portion of the first surface portion 81. The gap 85 separates the first surface portion 81 and the second surface portion 82 in the both end direction. The tube 57 of the harness 46 is inserted into one of the gaps 85. Therefore, one of the gaps 85 allows the wiring 55 to be pulled out to the outside of the lower case 47.

The third surface portion 83 is located on the other side of the enlarged portion 80 in the both end direction. In other words, the third surface portion 83 is located on the opposite side of the first surface portion 81 in the both end direction with respect to the second surface portion 82. The third surface portion 83 extends downward from the vicinity of the edge portion of the side wall portions 67, 67 in the both end direction. The third surface portion 83 has surfaces in the up-down direction and in the both side directions, similar to the first surface portion 81, and is formed in a plate shape with a thickness direction being the both end direction. The third surface portion 83 is formed in a tongue shape. The third surface portion 83 has a fitting portion 83a that can be fitted into the upper case 48. In this embodiment, the fitting portion 83a extends outward from the lower end of the third surface portion 83, that is, on the opposite side to the first surface portion 81. A gap 86 is formed between the third surface portion 83 and the second surface portion 82. The gap 86 separates the first surface portion 81 and the second surface portion 82 from each other. The edge of the second surface 82 is offset to the other side in the both-end direction relative to the side edge of the third surface 83. The third surface 83 and the second surface 82 are positioned apart in the both-end direction by a gap 86. In this embodiment, the third surface 83 is formed as a pair, spaced apart from each other in the both-end direction.

The upper case 48 is formed from a synthetic resin such as polycarbonate. The upper case 48 has an antenna surface 88, which is a curved surface portion, and both end surface portions 89 and both side surface portions 90 extending downward from the outer edge of the antenna surface 88, and is a top cover formed in a rectangular box shape with an open lower side facing the lower case 47. The antenna surface 88 faces one main surface 50a of the substrate body 50 of the sensor substrate 45, that is, the side where the antenna 51 is located. At the position of the antenna surface 88, the thickness of the upper case 48 is formed to be thicker than other parts of the upper case 48.

One end surface portion 89 is formed with an end surface enlarged portion 89a that is enlarged in a stepped shape in the vertical center. One end surface portion 89 is formed with a receiving portion 89b into which the claw portion 81a of the lower case 47 is claw-fitted. The receiving portion 89b is a hole that penetrates one end surface portion 89 in the thickness direction, and is formed as a longitudinal slit in the vertical direction. The receiving portion 89b is formed from the end surface enlarged portion 89a to the vicinity of the lower end portion of one end surface portion 89.

In addition, a recess 89c is formed at the lower end of the other end surface portion 89 opposite the antenna surface 88, into which the fitting portion 83a of the lower case 47 fits. In this embodiment, the recess 89c is formed as a cutout on both sides of the other end surface portion 89 corresponding to the fitting portion 83a.

As shown in FIG. 7, each side portion 90 is formed with a fixing portion 92 for fixing the upper case 48, i.e., the radio wave sensor 16, to the instrument body 23. The fixing portion 92 protrudes outward from the side portion 90. The fixing portion 92 has surfaces on both sides and both ends, and is formed in a plate shape with a thickness direction being the up-down direction. The fixing portion 92 is formed in a longitudinal shape on both ends. The fixing portion 92 is formed with an insertion hole 92a into which a fastener such as a screw is inserted. The fixing portion 92 is overlapped with a mounting portion 93 such as a mounting bracket formed on the instrument body 23, and is fixed to the mounting surface of the mounting portion 93 (instrument body 23) by tightening the fastener inserted into the insertion hole 92a.

In addition, a reinforcing portion 94 is integrally formed across the fixing portion 92 and the side portion 90. The reinforcing portion 94 is a triangular rib that connects the outer surface of the fixing portion 92 and the upper surface of the side portion 90. A plurality of reinforcing portions 94 are formed for each fixing portion 92, and are located away from each other on both ends. In this embodiment, the reinforcing portions 94 are located near both ends of the fixing portion 92 in the longitudinal direction. Therefore, the reinforcing portions 94 are located at positions that sandwich the insertion hole 92a.

As shown in Figs. 1 to 3, a hole 95 is formed in the upper case 48 at a position where at least one side surface 90 and one end surface 89 are connected. The hole 95 is a portion through which the harness 46, i.e., the wiring 55, can be pulled out from inside to outside the case 49. The hole 95 is formed by cutting out the lower end of the position where one side surface 90 and one end surface 89 are connected in a rectangular shape. Therefore, the hole 95 is connected to the opening at the lower end of the upper case 48. The hole 95 faces one gap 85 of the lower case 47, and the wiring 55 can be pulled out to the outside of the upper case 48 through the tube 57 of the harness 46 pulled out from this gap 85. In this embodiment, one reinforcing part 94 is arranged between the hole 95 and the insertion hole 92a.

In addition, a support portion 96 is formed facing the hole portion 95 and supporting the wiring 55 (tube 57) drawn out from the hole portion 95. In this embodiment, the support portion 96 extends from one of the fixed portions 92. That is, the support portion 96 is formed as a part of one of the fixed portions 92. The support portion 96 also forms an edge of the hole portion 95 and is separated from one of the end surface portions 89. Therefore, the hole portion 95 is opened across one of the side surface portions 90 and one of the end surface portions 89. The support portion 96 is formed in a flat shape. In the illustrated example, the support portion 96 extends from one side of the one of the fixed portions 92 in both end directions. Therefore, one of the fixed portions 92 is formed longer in both side directions than the other fixed portion 92. A position restricting portion 96a is formed at the tip of the support portion 96 to restrict the position of the wiring 55 (tube 57) drawn out from the hole portion 95. The position restricting portion 96a protrudes upward from the support portion 96.

Furthermore, as shown in Figures 2, 5 and 6, in this embodiment, a guide portion 98 is formed inside the upper case 48 to guide the upper case 48 when it is placed over the lower case 47. In the example shown, the guide portion 98 is formed in the shape of a rib in the vertical direction on the inner surface of the other end surface portion 89.

In this embodiment, a positioning portion 99 for positioning the lower case 47 is formed inside the upper case 48. In the illustrated example, the positioning portion 99 has a both-side positioning portion 99a which is a first positioning portion for positioning the lower case 47 in both sides relative to the upper case 48, and a both-end positioning portion 99b for positioning the lower case 47 in both ends relative to the upper case 48. The both-side positioning portion 99a is formed in a rib shape on each side portion 90. The both-side positioning portion 99a extends downward, for example, connected to the back side of the antenna surface 88. The both-end positioning portion 99b is formed on each end surface portion 89.

When assembling the radio wave sensor 16, first connect the connector 56 of the harness 46 to the connector receiving portion 53 of the sensor board 45, and then slide and push the sensor board 45 from the opposite side of the end wall portion 66 to the lower case 47 while aligning the position of the connector 56 with the arrangement space 71 so that the circuit portion 52 overlaps on the board support portion 63, thereby holding the sensor board 45 in the lower case 47.

In this state, the position of the sensor board 45 is restricted upward by the restricting portion 69, restricted downward by the board support portion 63, restricted in both directions by the side walls 67, 67, and restricted to one side in both end directions by the end wall portion 66. In addition, one side of the lower end of the connector 56 of the harness 46 faces the protrusion 77 of the lower case 47, and the non-placement area 56b faces the connecting portion 78 of the lower case 47. Therefore, when the harness 46 is pulled, one side of the lower end of the connector 56 abuts against the protrusion 77, and the non-placement area 56b abuts against the connecting portion 78, preventing the connector 56 from coming off the connector receiving portion 53.

Next, the upper case 48 is placed over the lower case 47 and the upper case 48 is pushed downward. At this time, the claw portion 81a of the lower case 47 comes into contact with the inner surface of the end face portion 89 of the upper case 48, and the first face portion 81, which is independent of the second face portion 82 in a plate-like shape due to the gap 85, is elastically deflected, and when the claw portion 81a reaches the position of the receiving portion 89b, the first face portion 81 is restored to its original shape and the claw portion 81a is engaged with the receiving portion 89b. The pushing of the upper case 48 into the lower case 47 is guided by the guide portion 98, and the side wall portion 67, the restricting portion 69, and the enlarged portion 80 of the lower case 47 come into contact with the both side positioning portions 99a, both end positioning portions 99b, and the end face enlarged portion 89a of the upper case 48, and the engaging portion 83a engages with the recess 89c, thereby determining the relative positions of the lower case 47 and the upper case 48 in the up-down direction, both side directions, and both end directions. The wiring 55 of the harness 46 is bundled and inserted through the tube 57 in the space below the board support 63, and the tube 57 is fitted into the gap 85 and inserted through the hole 95, and the wiring 55 is led out of the case 49 together with the tube 57. The wiring 55 led out of the case 49 is supported by the support 96 via the tube 57, and its position is regulated by the position regulation part 96a. In addition, the retaining body 58 on the outside of the tube 57 is positioned inside the lower case 47 with respect to the gap 85, so that the retaining body 58 is caught by the first surface part 81 and the second surface part 82 at the position of the gap 85 when the case 49 is pulled outward, and load is prevented from being applied to the wiring 55 itself and to the connection part between the wiring 55 and the connector 56.

The radio wave sensor 16 thus assembled is attached to the instrument body 23 from which the cover 24 has been removed. As shown in FIG. 7, the fixing portion 92 of the upper case 48 of the radio wave sensor 16 is placed on the mounting surface of the mounting portion 93 of the instrument body 23, which is inclined downward, and the upper case 48 is fixed to the mounting portion 93 by fastening a fastener such as a screw inserted into the insertion hole 92a, and the radio wave sensor 16 is attached to the instrument body 23. In this state, the lower case 47 of the radio wave sensor 16 is housed between the upper case 48 and the mounting portion 93, and the lower case 47 and the sensor board 45 held by the lower case 47 cannot be directly accessed from the outside. In addition, each side portion 90 is located close to the edge of the sensor hole 40, and the fixing portion 92 and the reinforcing portion 94 are located outside the edge of the sensor hole 40 and face the back surface of the cover 24. Additionally, the radio wave sensor 16 is supported so that the antenna surface 88 faces downward at a predetermined angle, for example 30° in this embodiment, and the longitudinal direction of the upper case 48, i.e., the longitudinal direction of the sensor board 45, faces left and right.

The wiring 55 led to the outside of the case 49 of the radio wave sensor 16 is mechanically and electrically connected to the sensor control unit as internal wiring.

The lighting fixture 10 equipped with the radio wave sensor 16 etc. is then installed on a mounting surface such as a wall or ceiling on the landing of the stairs.

When the lighting fixture 10 is normally supplied with an external power source, the power supply unit 15 converts the external power source into a specified lighting power source and supplies it to the light source unit 12. This causes the light source unit 12 to light up, illuminating the stairs and landing.

When the lighting fixture 10 is attached to a wall, the light source unit 12 is located on the lower side of the fixture body 23 and is tilted diagonally downward, so that light is also irradiated onto the lower side of the wall on which the lighting fixture 10 is installed and the floor of the landing, etc., which has the effect of brightening the area around the foot of the landing.

In addition, during normal operation, the sensor control unit monitors whether or not a person is detected by the radio wave sensor 16, controls the power supply unit 15 in response to the detection of a person, and automatically controls the brightness of the light source unit 12. When the radio wave sensor 16 does not detect a person, the sensor control unit saves energy by turning off the light source unit 12 or dimming it to lower the light output, and when the radio wave sensor 16 detects a person, it turns on the light source unit 12 or dims it to increase the light output.

In addition, during normal operation, the emergency lighting unit detects the supply of an external power source and charges the battery using this external power source. At this time, the emergency light source is turned off.

In the event of a power outage, when the supply of external power to the lighting fixture 10 stops, the emergency lighting unit detects the power outage of the external power source, converts the battery power into a specified lighting power source, and supplies it to the emergency light source 37. As a result, in the event of a power outage, the light source unit 12 is turned off, but the emergency light source 37 is turned on, illuminating the stairs and landing.

When the lighting fixture 10 is attached to a wall, the emergency light source 37 is located on the lower side of the fixture body 23 and is tilted diagonally downward, so that light is also irradiated onto the lower side of the wall on which the lighting fixture 10 is installed and the floor of the landing, etc., which has the effect of brightening the area around the base of the stairs or landing.

In addition, the emergency light sources 37 are arranged in two locations, one on each end of the fixture body 23, so that the side of the stairs connecting the landing to the upper floor and the side of the stairs connecting the landing to the lower floor can be properly illuminated.

In this way, by forming a gap 85 between the first surface 81 and the second surface 82 of the lower case 47, the gap 85 makes it easier for the first surface 81 to bend when the upper case 48 is assembled to the lower case 47, so that the claw portion 81a of the first surface 81 can be easily engaged with the receiving portion 89b of the upper case 48, making it easier to assemble the case 49. In addition, by inserting the wiring 55 connected to the sensor board 45 through the gap 85 and pulling it out through the hole portion 95 of the upper case 48, the wiring 55 can be easily pulled out to the outside. Therefore, the gap 85 can fulfill two roles: improving the ease of assembly of the case 49 and the ease of pulling out the wiring 55.

By supporting the wiring 55 pulled out from the hole 95 with the support 96, the wiring 55 can be held in a stable state, making it easier to attach the radio wave sensor 16 to the attachment portion 93.

In addition, the support portion 96 extends from the fixing portion 92 that is attached to the mounting portion 93 and forms the edge of the hole portion 95, making it easy to form the support portion 96 by utilizing the shape of the fixing portion 92.

The connector 56, which is detachable from the sensor board 45, is prevented from coming off the sensor board 45 by the retaining portion 75, so that the connector 56 is less likely to come off the sensor board 45 even if the wiring 55 is pulled.

In particular, the connector receiving portion 53 of the sensor board 45 of the radio wave sensor 16 is generally often predetermined as a part specification, and the connector 56 that fits this connector receiving portion 53 is not provided with a mechanism for preventing it from coming off. Therefore, by forming the retaining portion 75 on the lower case 47, even a connector 56 that does not have a mechanism for preventing it from coming off can be made less likely to come off easily from the connector receiving portion 53.

In addition, the connector 56 has one or more surplus terminals compared to the required number of terminals, and the non-placement area 56b is formed to face the connecting portion 78 of the retaining portion 75, making it easy to form a configuration that prevents the connector from coming loose.

In addition, by forming a reinforcing portion 94 on the upper case 48 across the side portion 90 and the fixing portion 92, strength can be ensured, and even if the engagement between the upper case 48 and the lower case 47 is released due to deterioration or damage of the claw portion 81a when the radio wave sensor 16 is attached to the mounting portion 93 of the device body 23 and covered with the cover 24, the reinforcing portion 94 abuts against the back side of the edge of the sensor hole 40, preventing the upper case 48 from falling off the sensor hole 40.

In one embodiment, the radio wave sensor 16 is used in the lighting fixture 10, but it can be used in any other device.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

10 Lighting equipment
16 Radio wave sensor
45 Sensor board
47 Lower case which is the first case body
48 Upper case which is the second case body
55 Wiring
56 Connector
75 Stopper
81 First surface
81a Claw part
82 Second surface
85 Gap
89b Receiving part
92 Fixed part
93 Mounting part
95 Hole
96 Support

Claims (5)

A sensor substrate;
Wiring connected to the sensor substrate;
a first case body having a first surface portion having a claw portion, a second surface portion extending in a direction intersecting the first surface portion, and a gap located between the first surface portion and the second surface portion, separating the first surface portion and the second surface portion, and through which the wiring is inserted;
a second case body that includes a receiving portion with which the claw portion is engaged and a hole portion through which the wiring inserted into the gap can be drawn out, the second case body being attached to the first case body while covering at least a portion of the first case body, and accommodating the sensor board between the second case body and the first case body;
A radio wave sensor comprising: The radio wave sensor according to claim 1 , wherein the second case body has a support portion that supports the wiring that is drawn out from the hole portion. the second case body has a fixing portion that is fixed to the attachment portion by a fixing device,
The radio wave sensor according to claim 2 , wherein the support portion extends from the fixing portion to form an edge of the hole. a connector that holds the wiring and is detachable from the sensor board;
a retaining portion that prevents the connector from coming off the sensor board;
4. The radio wave sensor according to claim 1, further comprising: A lighting fixture comprising the radio wave sensor according to claim 1 .

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