JP5161704B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting apparatus that detects and lights a human body with a human sensor.

  2. Description of the Related Art Conventionally, there is known a luminaire including a human sensor that detects a human body, a light source that is turned on according to a detection result of the human sensor, and a housing that holds the human sensor and the light source. (For example, refer to Patent Document 1). In this lighting fixture, the housing has a light irradiation opening on the lower surface and is fixed to the ceiling, and the light source is composed of two straight tube fluorescent lamps arranged side by side. The sensor is disposed at a position between the two fluorescent lamps when viewed from the bottom.

  When the human sensor is composed of a passive infrared sensor, the human sensor may detect the infrared component of the illumination light from the fluorescent lamp, and the wavelength of visible light emitted from the fluorescent lamp is an integer. Noise in the doubled infrared wavelength region may occur in the sensor. Thereby, there exists a possibility that a misdetection may arise.

Therefore, in order to prevent the influence of the fluorescent lamp on the sensor and improve the detection accuracy, it is conceivable to dispose the human sensor away from the fluorescent lamp. However, when it does so, a lighting fixture will become large.
Japanese Patent No. 4038960

  The present invention has been made to solve the above-described conventional problems, and in a lighting fixture that detects and lights a human body with a human sensor, the detection accuracy can be increased, and the mounting position of the human sensor It aims at providing the lighting fixture which can aim at size reduction of a fixture by raising the freedom degree of.

In order to achieve the above object, the present invention provides a human sensor that detects the presence of a human body, a light source that lights when a human body is detected by the human sensor, and a housing that holds the human sensor and the light source. The housing has a light irradiation opening, and the human sensor is composed of an active sensor that transmits radio waves and receives the reflected waves reflected by the human body. The light source is disposed on the opposite side of the light irradiation opening .

Before Symbol light source is constituted by a discharge lamp, wherein the human sensor while the light source is lit, it is preferable to stop the sensing operation.

Includes a brightness sensor for detecting the brightness of the peripheral vessel device, the light source, if the brightness of the instrument around detected by the brightness sensor is a predetermined value or more, the human body is detected by the human sensor Even if it is, it is preferable that the light is turned off .

According to the present invention , the human sensor is composed of an active sensor that transmits radio waves and receives reflected waves thereof, so that it is not affected by illumination light from the light source when detecting a human body. For this reason, it is possible to increase the detection accuracy, and it is not necessary to separate the sensor from the light source. Therefore, the degree of freedom of the human sensor mounting position can be increased. And since the active sensor is arrange | positioned on the opposite side to the opening for light irradiation on both sides of a light source, size reduction of an instrument can be achieved.

Hereinafter, lighting fixtures according to various embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 (a) (b) shows the lighting fixture which concerns on the 1st Embodiment of this invention. The luminaire 1 of the present embodiment includes a human sensor 2 that detects the presence of a human body, a light source 3 that is turned on when a human body is detected by the human sensor 2, and an abbreviation that holds the human sensor 2 and the light source 3. And a rectangular parallelepiped casing 4. The human sensor 2 is an active sensor that transmits radio waves such as millimeter waves or microwaves and receives the reflected waves reflected by the human body. The human sensor 2 is arranged on the back side in the light irradiation direction of the light source 3 and stops the transmission and reception operations of radio waves, that is, the sensing operation while the light source 3 is lit.

  The human sensor 2 receives a reflected wave that is reflected by the human body moving in the detection region and has a frequency changed by the Doppler effect, detects a frequency difference from the transmitted wave, and detects the presence of the human body. Since the human sensor 2 is composed of an active sensor, it detects not only a human body but also a moving vehicle.

  The light source 3 is composed of a discharge lamp, for example, a straight tube fluorescent lamp which is one type thereof. The light source 3 is held between a pair of sockets 31 provided at both ends of the casing 4 in the longitudinal direction.

  The housing 4 has a light irradiation opening 41 on the lower surface, and is fitted into a hole C2 provided in the ceiling C1 and fixed to the ceiling C1. In the housing 4, a substantially inverted V-shaped reflection plate 42 is disposed in a cross-sectional view so as to cover the light source 3 and the upper part thereof. A hole 42a is provided in a portion of the reflecting plate 42 on the back side in the light irradiation direction of the light source 3, and the human sensor 2 is fitted into the hole 42a and is disposed so that a part thereof is exposed. In this way, the human sensor 2 is arranged on the side opposite to the light irradiation opening 41 with the light source 3 interposed therebetween. The reflection plate 42 is formed integrally with the housing 4.

  In the lighting fixture 1 configured as described above, when the light source 3 is turned on, the light L1 emitted from the light source 3 is reflected by the reflecting plate 42 or is directly irradiated to the lower portion of the fixture through the light irradiation opening 41. .

  FIG. 2 shows an electrical configuration of the luminaire 1. The lighting fixture 1 controls the driving of the human sensor 2 and the light source 3, the lighting circuit 11 for lighting the light source 3, and the human sensor 2, and based on the detection signal from the human sensor 2. And a control unit 12 that controls the lighting of the light source 3 by controlling the driving of the light source 11. The control unit 12 performs power feeding control from the power source to the lighting circuit 11 and the human sensor 2.

  The control unit 12 includes a microprocessor and a timer. When the microprocessor receives a detection signal from the human sensor 2, the microprocessor turns on the light source 3 and turns off the human sensor 2. Then, the microprocessor measures a preset lighting holding time with a timer, turns off the light source 3 when the lighting holding time elapses, and turns on the human sensor 2. Even when the microprocessor receives the next detection signal from the human sensor 2 during the lighting holding time, the microprocessor keeps counting the lighting holding time.

  FIG. 3 shows an operation example of each unit controlled by the control unit 12 of the luminaire 1. During the sensing operation of the human sensor 2, (1) when the human body enters the detection area of the human sensor 2, (2) the human sensor 2 detects the human body, and (3) the light source 3 is turned on, The lighting holding time starts counting. (4) The human sensor 2 stops the sensing operation. The human sensor 2 stops the sensing operation while the light source 3 is lit. For this reason, after the sensing operation is stopped, even if (5) the human body enters the detection area by the human sensor 2, (6) the human sensor 2 does not detect the human body.

  After the sensing operation of the human sensor 2 stops, (7) when the light source 3 is turned off as the lighting holding time elapses, (8) the human sensor 2 is activated to resume sensing. Thereafter, operations similar to the above (1) to (8) are repeated.

In the present embodiment, the human sensor 2 is composed of an active sensor that transmits radio waves and receives reflected waves thereof, and therefore is not affected by illumination light from the light source 3 when detecting a human body. For this reason, it is possible to increase the detection accuracy, and it is not necessary to separate the human sensor 2 from the light source. Therefore, the degree of freedom of the mounting position of the human sensor 2 is increased. Since the human sensor 2 is disposed on the opposite side of the light irradiation opening 41 with the light source 3 interposed therebetween, the size of the instrument can be reduced, and the size when viewed from the lower side of the instrument is the human sense. It is almost the same as a lighting fixture without a sensor. Further, since the human sensor 2 is hidden by the light source 3, the human sensor 2 becomes inconspicuous when the luminaire 1 is viewed from below, so that the appearance is improved and therefore the design is excellent.

  Further, the light source 3 is constituted by a discharge lamp, and the human sensor 2 stops the sensing operation while the light source 3 is lit and does not transmit radio waves. Radio waves are not reflected by the discharge lamp that has become a state that can be regarded as a metal. Therefore, erroneous detection can be prevented.

(Modification of the first embodiment)
4A to 4C show a lighting fixture 1 according to a modification of the first embodiment. Compared to the first embodiment, the lighting fixture 1 of the present modified example is not provided with the light irradiation opening 41 in the housing 4, the human sensor 2 is disposed on the lower surface of the housing 4, and the socket The difference is that 31 is projected. A hole 4a is provided in the lower surface of the housing 4 on the back side in the light irradiation direction of the light source 3, and the human sensor 2 is fitted into the hole 4a and is disposed so that a part thereof is exposed. Yes.

(Modification different from the above of the first embodiment)
Fig.5 (a)-(c) shows the lighting fixture 1 which concerns on another modification different from the above. In the present modification, the light source 3 is composed of an incandescent bulb. Since the incandescent bulb does not generate a discharge, there is no problem as described above due to the discharge. Therefore, unlike the first embodiment, the control unit 12 of the present modification does not stop the sensing operation of the human sensor 2 when turning on the light source 3, and continues the operation.

  The housing 4 includes a base portion 43 having a short rectangular parallelepiped shape and a support portion 44 that protrudes from the lower surface of the base portion 43 and supports the light source 3 so as to be substantially parallel to the base portion 43. A hole 43a is provided in the lower surface of the base 43 on the back side of the light source 3, and the human sensor 2 is fitted into the hole 43a so that a part thereof is exposed.

  FIG. 6 shows an operation example of each unit controlled by the control unit 12 of this modification. During the sensing operation of the human sensor 2, (1) when the human body enters the detection area of the human sensor 2, (2) the human sensor 2 detects the human body, and (3) the light source 3 is turned on. At this time, in the present modification, unlike the first embodiment, (4) the human sensor 2 continues the sensing operation without stopping.

(Second Embodiment)
FIG. 7 shows a lighting fixture according to the first embodiment of the present invention. The lighting fixture 1 of this embodiment is further provided with the brightness sensor 5 which detects the brightness around the fixture compared with the said 1st Embodiment. The brightness sensor 5 is arranged on the back side in the light irradiation direction of the light source 3 along with the human sensor 2. A hole 42b is provided in a portion of the reflecting plate 42 on the back side in the light irradiation direction of the light source 3, and the brightness sensor 5 is fitted into the hole 42b and is disposed so as to be partially exposed.

  FIG. 8 shows the electrical configuration of the lighting fixture 1 of the present embodiment. The control unit 12 controls lighting of the light source 3 based on the detection result by the brightness sensor 5 in addition to the detection result by the human sensor 2. Specifically, when the brightness around the appliance detected by the brightness sensor 5 is greater than or equal to a predetermined value, the controller 12 controls the light source 3 even when the human sensor 2 detects the human body. Do not light up, but leave it off. On the other hand, when the brightness detected by the brightness sensor 5 is lower than a predetermined value, the control unit 12 turns on the light source 3 when the human sensor 2 detects the human body.

  FIG. 9 shows an operation example of each unit controlled by the control unit 12. Here, it is assumed that the human sensor 2 is in a sensing operation and the brightness sensor 5 detects a brightness of a predetermined value or more. In this state, when (1) the human body enters the detection area by the human sensor 2, (2) the human sensor 2 detects the human body, but (3) the light source 3 is not lit, and (4) human The sense sensor 2 continues the sensing operation.

  After that, (5) when the brightness sensor 5 stops detecting a brightness of a predetermined value or more, (6) when the human body enters the detection area of the human sensor 2, the above (1) to (1) in FIG. 4) Operations (7) to (11) having the same contents as the operations shown in (7) and (8) are performed. Thereafter, the same operations as those in (1) to (11) are repeated.

  In the present embodiment, when the brightness around the appliance is equal to or higher than a predetermined value, the light source 3 is not turned on even when a human body is detected by the human sensor 2, so that energy saving is achieved. Can do. Moreover, since the brightness sensor 5 is arrange | positioned at the back side of the light source 3, size reduction of an instrument can be achieved. Further, since the brightness sensor 5 is hidden by the light source 3, the brightness sensor 5 becomes inconspicuous when the luminaire 1 is viewed from below, so that the appearance is improved.

(Modification of the second embodiment)
10 (a) and 10 (b) show a lighting fixture 1 according to a modification of the second embodiment. Compared to the first embodiment, the lighting fixture 1 of the present modified example is not provided with the light irradiation opening 41 in the housing 4, and the human sensor 2 and the brightness 5 are arranged on the lower surface of the housing 4. And the point that the socket 31 protrudes. Holes 4a and 4b are provided on the lower surface of the housing 4 on the back side in the light irradiation direction of the light source 3, the human sensor 2 is fitted into the hole 4a, and the brightness sensor 5 is fitted into the hole 4b. Each is arranged so that a part is exposed.

  In addition, this invention is not limited to the structure of said various embodiment, A various deformation | transformation is possible according to a use purpose. For example, the light source 3 may be composed of a high-intensity discharge lamp. Further, when the control unit 12 receives the detection signal from the human sensor 2, the controller 12 does not turn off the human sensor 2, but keeps the power on, until the lighting holding time elapses. May be masked or ignored.

(A) is a perspective view when the lighting fixture which concerns on the 1st Embodiment of this invention is seen from the downward direction, (b) is sectional drawing of the lighting fixture. The electrical block diagram of the said lighting fixture. The operation | movement chart of the human sensor of the said lighting fixture, and a light source. (A) is a perspective view when the lighting fixture which concerns on the modification of the said embodiment is seen from the downward direction, (b) is a side view of the lighting fixture, (c) is the sectional view on the AA 'line of (b). . (A) is a perspective view when the lighting fixture which concerns on another modification different from the above is seen from the downward direction, (b) is a side view of the lighting fixture, (c) is the bottom view. The operation | movement chart of the human sensor of the said lighting fixture, and a light source. The perspective view when the lighting fixture which concerns on the 2nd Embodiment of this invention is seen from the downward direction. The electrical block diagram of the said lighting fixture. The operation chart of the brightness sensor of the said lighting fixture, a human sensitive sensor, and a light source. (A) is a perspective view when the lighting fixture which concerns on the modification of the said embodiment is seen from the downward direction, (b) is a side view of the lighting fixture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Human sensor 3 Light source 4 Case 5 Brightness sensor

Claims (3)

A human sensor for detecting the presence of the human body;
A light source that lights when a human body is detected by the human sensor;
In a lighting fixture comprising a housing for holding the human sensor and a light source,
The housing has an opening for light irradiation,
The human sensor is composed of an active sensor that transmits radio waves and receives reflected waves reflected by the human body, and is arranged on the side opposite to the light irradiation opening with the light source interposed therebetween. Lighting equipment to do. The light source is composed of a discharge lamp,
The lighting device according to claim 1, wherein the human sensor stops a sensing operation while the light source is turned on. It has a brightness sensor that detects the brightness around the appliance,
The light source is turned off even when a human body is detected by the human sensor when the brightness around the appliance detected by the brightness sensor is a predetermined value or more. The lighting fixture according to claim 1 or 2.

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