Radio wave sensor

Abstract

To provide a radio wave sensor surely attachable to a part to be mounted.SOLUTION: A radio wave sensor 16 includes a substrate 45, a lower case 46, and an upper case 47. The lower case 46 holds the substrate 45. The upper case 47 holds the lower case 46, houses the substrate 45 between itself and the lower case 46, and is fixed to a part to be mounted.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] An embodiment of the present invention relates to a radio wave sensor that is attached to a mounting portion. [Background technology]

[0002] Conventionally, there are lighting fixtures that are installed on the installation surface of a staircase landing to illuminate the staircase and the landing. Such lighting fixtures may be equipped with a radio wave sensor that detects people moving on the stairs and may be equipped with a function of dimming control in response to the detection of a moving object such as a person. In this case, a structure that can reliably attach the radio wave sensor to the fixture body is desired. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-78375 A [Patent Document 2] JP 2019-102202 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a radio wave sensor that can be securely attached to a mounting portion. [Means for solving the problem]

[0005] The radio wave sensor of the embodiment includes a substrate, a first case body, and a second case body. The substrate has one main surface and another main surface on which a connector receiving portion is provided. The first case body holds the substrate. Has a groove-shaped holding portion The second case body holds the first case body, houses the board between the first case body and the second case body, and is fixed to the mounting portion. The board can slide along the holding portion with the connector having wiring connected to the connector receiving portion, and is held by the holding portion when slid, the sliding direction of the board is a direction intersecting the direction in which the first case body is attached to the second case body, and the first case body has a retaining portion that prevents the connector from coming off the board. Effect of the Invention

[0006] According to the embodiment, the radio wave sensor can be expected to be securely attached to the attachment portion. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is an exploded perspective view of the radio wave sensor according to the embodiment; [Diagram 2] FIG. 2 is an exploded perspective view of the radio wave sensor shown in the opposite direction to that of FIG. 1. [Diagram 3] FIG. [Figure 4] FIG. 4 is a perspective view of the radio wave sensor shown in the opposite direction to that of FIG. 3. [Diagram 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. [Figure 6] FIG. 2 is a perspective view showing a state in which the lighting fixture including the radio wave sensor is mounted on a wall. [Figure 7] FIG. 2 is a perspective view showing the state in which the lighting fixture is attached to a ceiling surface. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, one embodiment will be described with reference to FIGS.

[0009] Lighting fixture 10 is shown in Figures 6 and 7. Lighting fixture 10 is installed on a mounting surface such as a wall or ceiling surface of a staircase landing and is used to illuminate the staircase or landing. Furthermore, lighting fixture 10 is an emergency lighting fixture that performs dimming control in response to detection of a moving object such as a person walking up the stairs and that is turned on by an emergency power source in the event of a power outage in the normal power source.

[0010] Note that FIG. 6 shows the lighting fixture 10 being attached to a wall surface, and FIG. 7 shows the lighting fixture 10 being attached to a ceiling surface, but the following description will mainly focus on the lighting fixture 10 being attached to a wall surface.

[0011] Illumination device 10 is provided in an elongated shape along the width direction. Illumination device 10 includes housing 11, light source unit 12, which is a main light source or a regular light source, and emergency light unit 13, which are disposed on the front side of housing 11, and a terminal block, a power supply unit, a radio wave sensor 16, a sensor control unit, an emergency lighting unit, a battery, and the like, which are disposed within housing 11.

[0012] The housing 11 includes an appliance body 23 and a cover 24 that is detachably attached to the front surface of the appliance body 23. The front surface of the housing 11 is formed with an inclined surface 25 that is inclined toward one side in the short side direction.

[0013] The fixture body 23 is open on the front side and formed in an elongated shape along the width direction. The light source unit 12 and the emergency light unit 13 are arranged in a lower region on one side of the short side 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 an upper region on the other side. The fixture body 23 is attached to a bolt protruding from the installation surface, and 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 installation surface, and screwing a nut onto the tip of the bolt and tightening it.

[0014] The cover 24 has a front portion 30 and a side portion 31 bent from the front portion 30. The cover 24 covers the opening at the front of the device body 23 with the front portion 30, and the side portion 31 is disposed 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.

[0015] An inclined surface 25 on the front surface of the housing 11 is formed on the front surface 30 of the cover 24. This inclined surface 25 also functions as a reflective surface that reflects the light from the light source unit 12. The front end side of the side surface 31 of the cover 24 is inclined toward the front surface 30, but it does not have to be inclined.

[0016] 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 in parallel with the inclined surface 25 on the front surface of the housing 11 by an attachment spring.

[0017] The emergency light units 13 are attached to the front of the fixture body 23 at positions aligned on both sides of the longitudinal direction of the light source unit 12. The emergency light unit 13 includes an emergency light source 37, and an emergency light source cover to which the emergency light source 37 is attached, and a front frame 38 which is a decorative frame.

[0018] The terminal block is connected to an external power supply line that is drawn into the fixture body 23. The terminal block is electrically connected to the power supply unit, the sensor control unit, and the emergency lighting unit by internal wiring that is an electric wire.

[0019] The power supply unit 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 side, which is the secondary side, electrically connected to the light source unit 12 by connection wiring. The power supply unit converts an external power supply, such as an AC power supply, supplied through the terminal block into a lighting power supply, such as a DC power supply, for lighting the light-emitting element of the light-emitting module of the light source unit 12, and supplies the converted power to the light-emitting module.

[0020] The radio wave sensor 16 transmits detection radio waves to a predetermined detection range and receives reflected waves of the transmitted radio waves by a moving object to detect the presence or absence of a moving object within the detection range in front of the lighting fixture 10. In this embodiment, the radio wave sensor 16 is a human presence sensor that detects a person. 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 not to interfere with an external power supply line drawn into the fixture body 23.

[0021] 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 by internal wiring and sends a control signal such as a dimming signal to the power supply unit in response to the detection of the presence of a moving object by the radio wave sensor 16.

[0022] The emergency lighting unit is electrically connected to the terminal block by internal wiring, operates when supplied with an external power source, and is also electrically connected to the battery by internal wiring to control the charging and discharging of the battery. The emergency lighting unit includes a power outage detection circuit that detects a power outage of 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 of the power source. Furthermore, the emergency lighting unit 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.

[0023] The inspection unit 42 is disposed in the fixture 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 inspection, a monitor lamp that displays the inspection results, etc. Through the inspection unit 42, it is possible to periodically check whether the emergency light source 37 is operating normally using battery power.

[0024] The battery is a rechargeable storage battery, and is electrically connected to the emergency lighting unit by internal wiring.

[0025] Next, the configuration of the radio wave sensor 16 will be described.

[0026] 1 to 4 has a substrate 45, a lower case 46 which is a first case body that holds the substrate 45, and an upper case 47 which is a second case body that holds the lower case 46. The substrate 45 is held by the lower case 46 from one side, and is covered by the upper case 47 from the other side, which is the opposite direction. In the following description 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. A connector 48 is detachably connected to the substrate 45. The connector 48 electrically connects the sensor control unit and the radio wave sensor 16.

[0027] The substrate 45 is a sensor substrate. The substrate 45 includes a substrate body 50. In this embodiment, the substrate body 50 is formed in a rectangular flat plate shape. An antenna (not shown) is formed on one main surface 50a of the substrate body 50. In addition, a circuit section 51 electrically connected to the antenna and a connector receiving section 52, which is a connector pin electrically connected to the circuit section 51 and detachably receives the connector 48, are arranged on the other main surface 50b of the substrate body 50. The connector receiving section 52 is arranged along the short side direction of the substrate body 50 at one end in the longitudinal direction of the substrate body 50, and the circuit section 51 is arranged adjacent to the connector receiving section 52. The circuit section 51 is formed in a rectangular shape and covers most or more than half of the other main surface 50b of the substrate body 50.

[0028] In this embodiment, the substrate 45 is accommodated between the lower case 46 and the upper case 47 with one main surface 50a of the substrate body 50 on the upper side and the other main surface 50b on the lower side.

[0029] The lower case 46 is formed of, for example, a synthetic resin, etc. The lower case 46 integrally has a first portion 54 located on the upper side and a second portion 55 located on the lower side.

[0030] The first portion 54 integrally includes a first portion side surface portion 58 formed in a planar shape in the up-down direction, and a first portion end surface portion 59 raised from both ends of the first portion side surface portion 58. In other words, the first portion 54 is formed in a U-shape when viewed from above or below. A partition portion 60 is formed in the first portion side surface portion 58. Also, a retaining portion 61 that prevents the connector 48 from coming off is formed in the first portion side surface portion 58.

[0031] The partition 60 is a part that separates the substrate 45 from the space below it. In this embodiment, the partition 60 is formed in a rectangular plate shape across the first portion side surface 58 and one (left side in Figs. 1, 2, and 4) first portion end surface 59. The partition 60 is separated from the other (right side in Figs. 1, 2, and 4) first portion side surface 58. Therefore, an arrangement space 63 is formed between one end of the partition 60 and the other first portion end surface 59. The connector 48 is located in the arrangement space 63. That is, the arrangement space 63 communicates the substrate 45 side with its lower side.

[0032] The retaining portion 61 is a claw portion that restricts the lower portion of the connector 48. In the present embodiment, the retaining portion 61 is formed across the first portion side surface portion 58 and the other first portion end surface portion 59. The retaining portion 61 is located below and spaced apart from the arrangement space 63. The retaining portion 61 protrudes less from the first portion side surface portion 58 than the partition portion 60.

[0033] Further, a notch 65 is formed in each first portion end surface portion 59. The notch 65 is formed in the upper portion of the first portion end surface portion 59 at the end opposite the first portion side surface portion 58. Facing this notch 65, a holding portion 67 that holds one long side and both short sides of the substrate 45 is formed in a groove shape from the inner surface of the first portion end surface portion 59 to the inner surface of the first portion side surface portion 58. Therefore, the first portion 54 functions as a substrate holding portion that holds the substrate 45.

[0034] The second portion 55 is integrally provided with a second portion side portion 68 formed in a planar shape in the vertical direction and a second portion end surface portion 69 raised from both ends of the second portion side portion 68, and is integrally connected to the lower end portion of the first portion 54 by expanding in a step-like manner via an extension portion 70. A fitting portion 71 that fits with the lower end portion of the upper case 47 is formed protruding outward from the lower end portion of the second portion side portion 68. In addition, a locking portion 72 for locking and holding the lower case 46 to the upper case 47 is protruding in a claw-like shape from the outer portion of each second portion end surface portion 69. Therefore, the second portion 55 has a function of a held portion that is held by the upper case 47.

[0035] The upper case 47 is formed of, for example, synthetic resin. The upper case 47 has an antenna surface 75, and both side surfaces 76 and both end surfaces 77 extending downward from the outer edge of the antenna surface 75, and is a top cover formed in a rectangular box shape with an opening on the lower side facing the lower case 46. The antenna surface 75 faces one main surface 50a side of the board body 50 of the board 45, that is, the side on which the antenna is arranged.

[0036] A recess 80 into which the fitting portion 71 of the lower case 46 fits is formed at the lower end of one side surface portion 76 opposite the antenna surface 75. Moreover, a lead-out portion 81 through which wiring 90 connected to the connector 48 is led out to the outside is formed at the lower end of the other side surface portion 76 opposite the antenna surface 75.

[0037] Further, the end surface portion 77 is formed with a locking receiving portion 83 into which the locking portion 72 of the lower case 46 is inserted and locked. Furthermore, at the lower end portion opposite the antenna surface 75 of the end surface portion 77, seating surface portions 85 for fixing the upper case 47 to the device body 23 (FIG. 5) are respectively provided in a protruding plate shape, and these seating surface portions 85 are formed with insertion holes 86 into which fixing tools such as screws are inserted.

[0038] It is sufficient that either the lock receiving portion 83 or the locking portion 72 is convex and the other is concave or a hole.

[0039] The connector 48 is also called a harness, and is formed in a flat rectangular parallelepiped shape, and a plurality of wirings 90 are connected adjacently in the longitudinal direction. The wirings 90 are led out to the other end opposite to the one end connected to the connector receiving portion 52 of the connector 48. In addition, at the other end of the connector 48, a facing region 92 that faces the retaining portion 61 and is prevented from coming off when the connector 48 is connected to the connector receiving portion 52, and a wiring region 93 in which the wirings 90 are arranged are set adjacently in the longitudinal direction. In other words, the facing region 92 is a planar region in which the wirings 90 are not arranged. The facing region 92 is a region at one end of the connector 48 in the longitudinal direction, and the wiring region 93 is located on the other end side of the longitudinal direction relative to the facing region 92. Therefore, the wirings 90 of the connector 48 are positioned biased toward the other end side in the longitudinal direction. In other words, the wirings 90 are arranged asymmetrically in the longitudinal direction with respect to the shape of the connector 48.

[0040] When assembling the radio wave sensor 16, first, the connector 48 is connected to the connector receiving portion 52 of the substrate 45, and the substrate 45 with the connector 48 connected thereto is slid from the cutout portion 65 along the holding portion 67 relative to the lower case 46, thereby holding the substrate 45 in the lower case 46. In this state, the substrate 45 is positioned above and facing the partition portion 60, the connector 48 is positioned in the arrangement space 63 of the lower case 46, and the facing region 92 faces the retaining portion 61 of the lower case 46.

[0041] Next, lower case 46 is inserted and pressed into upper case 47 from below, whereby locking portions 72 of lower case 46 are inserted and locked into locking receiving portions 83 of upper case 47, lower case 46 is held by upper case 47, and substrate 45 is housed between lower case 46 and upper case 47. In this state, second portion side surface portion 68 and second portion end surface portions 69 of lower case 46 are respectively placed against one side surface portion 76 and both end surface portions 77 of upper case 47, and almost the entire lower case 46 is housed inside upper case 47. Wiring 90 of connector 48 is led out from lead-out portion 81 to the outside of upper case 47.

[0042] 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. 5, the instrument body 23 has a mounting member 95, which is a support member having a mounting surface 95a inclined downward, fixed to the upper edge thereof. The seating surface 85 of the upper case 47 of the radio wave sensor 16 is placed on the mounting surface 95a of the mounting portion 95, and a fastener such as a screw inserted into the insertion hole 86 is fastened, whereby the upper case 47 is fixed to the mounting portion 95, and the radio wave sensor 16 is attached to the instrument body 23. In this state, the lower case 46 of the radio wave sensor 16 is accommodated between the upper case 47 and the mounting portion 95, and the lower case 46 and the board 45 held by the lower case 46 cannot be directly accessed from the outside. The radio wave sensor 16 is supported such that the antenna surface 75 faces downward at a predetermined angle, for example 30° in this embodiment, and the longitudinal direction of the upper case 47, i.e., the longitudinal direction of the board 45, faces the left-right direction.

[0043] 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 of the landing of the stairs.

[0044] During normal operation when external power is supplied to the lighting fixture 10, the power supply unit converts the external power into a predetermined lighting power supply and supplies it to the light source unit 12. This causes the light source unit 12 to light up and illuminate the stairs and landing.

[0045] When the lighting fixture 10 is mounted on a wall, the light source unit 12 is positioned on the lower side of the fixture body 23 and is tilted diagonally downward, so that light is irradiated onto the lower side of the wall on which the lighting fixture 10 is installed and the floor surface of the landing, etc., thereby brightening the area around the foot of the landing.

[0046] Furthermore, during normal operation, the sensor control unit monitors whether or not a person has been detected by the radio wave sensor 16, and controls the power supply unit in response to the detection of a person, thereby automatically controlling the brightness of the light source unit 12. When no person is detected by the radio wave sensor 16, the sensor control unit saves energy by turning off the light source unit 12 or adjusting the light output to lower it, and when a person is detected by the radio wave sensor 16, the sensor control unit turns on the light source unit 12 or adjusts the light output to higher it.

[0047] In addition, during normal operation, the emergency lighting unit detects the supply of an external power source and charges the battery with this external power source, while the emergency light source is turned off.

[0048] During 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, during 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.

[0049] When the lighting fixture 10 is mounted on a wall, the emergency light source 37 is positioned on the lower side of the fixture body 23 and is inclined diagonally downward, so that light is irradiated onto the lower side of the wall on which the lighting fixture 10 is installed and the floor surface of the landing, etc., thereby brightening the areas around the feet of the stairs and landing.

[0050] In addition, since the emergency light sources 37 are arranged in two locations on both ends of the fixture body 23, 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.

[0051] In this way, by holding the substrate 45 in the lower case 46, holding this lower case 46 in the upper case 47 and accommodating the substrate 45 between the lower case 46 and the upper case 47, and fixing the upper case 47 to the mounting portion 95, the substrate 45 can be securely held between the lower case 46 and the upper case 47, and the radio wave sensor 16 can be securely mounted to the mounting portion 95. Therefore, it is possible to prevent the radio wave sensor 16 from coming off the device main body 23 when the locking portion 72 that hooks the lower case 46 and the upper case 47 together deteriorates or breaks.

[0052] Furthermore, since the distance between the position of the substrate 45 and the antenna surface 75 of the upper case 47 is fixed, the detection characteristics of the radio wave sensor 16 are less affected by being fixed to the mounting portion 95 .

[0053] By providing the lower case 46 with a retaining portion 61 that prevents the connector 48 from coming off the board 45, the retaining portion 61 can prevent the connector 48 from coming off the board 45 when the wiring 90 of the connector 48 is pulled.

[0054] Furthermore, by providing connector 48 with facing region 92 facing retaining portion 61 and wiring region 93 adjacent to facing region 92 and in which wiring 90 is provided, the position of wiring 90 of connector 48 becomes asymmetrical in the direction in which these regions 92, 93 are adjacent. Therefore, if the connection orientation of connector 48 to board 45 is incorrect, when board 45 is attached to lower case 46, wiring 90 will hit retaining portion 61, making it impossible to attach board 45 to lower case 46. Therefore, it is possible to structurally restrict connection of connector 48 to board 45 in an incorrect orientation (incorrect polarity).

[0055] In other words, since the shape of the connector receiving portion 52 of the board 45 is determined for use as a part, the connector 48 that fits into the connector receiving portion 52 does not have a mechanism to prevent it from coming loose or causing incorrect polarity. Therefore, in this embodiment, a locking portion 61 is provided in the lower case 46 to prevent it from coming loose and causing incorrect polarity, and to prevent the connector 48 from being inserted incorrectly into the connector receiving portion 52.

[0056] In the embodiment, the radio wave sensor 16 is used in the lighting fixture 10, but the present invention is not limited to this and can be used in any other device.

[0057] Although some 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 spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0058] 16 Radio wave sensor 45 Substrate 46 Lower case which is the first case body 47 Upper case which is the second case body 48 Connectors 61 Stopper 67 Holding part 90 Wiring 92 Opposing area 93 Wiring area 95 Mounting part

Claims

1. A substrate having one main surface and another main surface provided with a connector receiving portion; a first case body having a groove-shaped holding portion for holding the substrate; a second case body that holds the first case body, accommodates the substrate between the first case body and the second case body, and is fixed to the mounting portion; the board is slidable along the holding portion in a state where a connector having wiring is connected to the connector receiving portion, and is held by the holding portion when slid; a sliding direction of the substrate is a direction intersecting a direction in which the first case body is attached to the second case body, The first case body has a retaining portion that prevents the connector from being removed from the board. A radio wave sensor comprising:

2. The connector comprises: An opposing region opposing the retaining portion; a wiring region adjacent to the facing region and in which wiring is provided; 2. The radio wave sensor according to claim 1.

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