JP3068544U - Lighting device with motion sensor - Google Patents

Abstract

(57) [Abstract] [Problem] To save power, solve the problem of hygiene caused by an unspecified number of people touching a switch, and at a low cost, without being restricted by the installation place. Ensure that people can be detected. An infrared sensor (1) for detecting a human body, and a lighting device (2) that is turned on in response to a detection signal from the infrared sensor (1). The infrared sensor 1 is constituted by a pyroelectric type.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a lighting device with a human sensor, and more particularly, to a lighting device with a human sensor that is configured to automatically turn on a lighting device when a human body is detected.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as this type of device, there is a device that includes, for example, a light-emitting unit and a light-receiving unit that receives a reflected light beam, and that is configured to control on / off of a lighting fixture by a detection signal from the light-receiving unit ( See, for example, JP-A-5-242974.

[0003]

[Problems to be solved by the invention]

 By the way, for example, toilets, changing rooms, employee cafeterias, warehouses, etc. are places that do not need to be turned on all the time, so it is desirable that they be turned on automatically only when entering a room, and that they can be turned off automatically when not present, so as not to forget to turn off.

[0004] In addition, for example, a lighting switch for a place where an unspecified number of people enter and exit, such as a toilet in a department store or a supermarket, has a problem in terms of hygiene. Therefore, lighting in such a place is not performed by a manual switch. It is desirable that it be formed so that it can be automatically turned on and off.

Although this type of device is effective in saving power and saving energy, there is no merit in increasing the price of the device. Therefore, this type of device is desirably formed so that it can be provided at a low cost and is easy to use without any restrictions on the use and installation locations.

However, as described above, the conventional product usually includes a light emitting unit and a light receiving unit and detects reflected light. Therefore, according to the conventional product, for example, light modulation means for removing disturbance light is required. It was inevitable that the equipment would be expensive.

[0007] Furthermore, since the conventional product is of the reflective type as described above, it is often used, for example, in a column of a fluorescent lamp stand for a desk to detect a human body in a seated state. There is a surface that is not suitable for reliably detecting ingress and egress of a wide area.

The present invention has been proposed in view of such a conventional situation. Therefore, the technical problem of the present invention is not only to save power but also to solve the problem of hygiene caused by an unspecified number of people touching the switch, and it is low cost and the installation place is limited. An object of the present invention is to provide a lighting device with a human sensor formed so that a person can be reliably detected over a wide area without any problem.

[0009]

[Means for Solving the Problems]

 The present invention employs the following technical means in order to solve the above problems.

That is, as shown in FIG. 1, the present invention includes an infrared sensor 1 for detecting a human body, and a lighting fixture 2 for lighting upon receiving a detection signal from the infrared sensor 1. 1 is a pyroelectric type (claim 1).

Here, that the infrared sensor 1 is of a pyroelectric type means an infrared detector using a pyroelectric material whose surface is induced to be charged by a change in temperature. Specifically, it is made of a pyroelectric material such as LiTaO ₃ single crystal or PbTiO ₃ porcelain.

The present invention preferably includes a timer for controlling the lighting time of the lighting fixture 2 (claim 2).

In this case, since the lighting time can be set in advance, the lighting fixture 2 can be turned on for a set fixed time, which is effective in saving power. Here, the timer has a function of opening and closing a contact with a certain time difference. This timer can be either a timed operation type (a contact closes (or opens) after a certain period of time after voltage is applied and the contact opens (or closes) instantly when the voltage is cut off), or a time reset type (voltage The contact may be closed (or opened) instantly when the voltage is applied, and the contact may be opened (or closed) a certain time after the voltage is cut off). In the case of the present invention, lighting includes blinking.

The present invention may include a relay 8 with a memory as shown in FIG. 5 (claim 3).

In this case, since the device of the present invention can be formed to have various and various control functions, the added value can be increased. Here, the above control functions include, for example, a function of sequentially operating a set program by satisfying a set condition, a function of monitoring an input state at regular time intervals, and operating only when a condition is satisfied. . The embodiment of FIG. 5 is an example in which the lighting fixture 2 and the ventilation fan 9 are connected to the output terminal of the relay 8 with the memory. In the case of this embodiment, when the infrared sensor 1 detects a person, the lighting fixture 2 and the ventilation fan 9 operate for a certain period of time, for example.

[0016]

[Embodiment of the invention]

 Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1 and the like, reference numeral 1 denotes an infrared sensor for detecting a human body. The infrared sensor 1 is of a pyroelectric type, and includes a small lens 1a as shown in FIGS. The infrared sensor 1 is attached to, for example, a ceiling at an entrance of a room or an upper corner position of a side wall.

Reference numeral 2 denotes a lighting device constituted by, for example, a fluorescent lamp or an incandescent lamp. The lighting fixture 2 is turned on in response to the detection signal from the infrared sensor 1.

Reference numeral 3 denotes a relay that is turned on by a signal from the infrared sensor 1. Reference numeral 4 denotes a power relay electrically connected to the relay 3. The power relay 4 is turned on in response to a signal from the relay 3 and turns on the lighting fixture 2.

Reference numeral 5 denotes an AC 200V power supply. The power relay 4 is directly supplied with power from the power supply 5, and the infrared sensor 1 and the relay 3 are transformed into 5 VDC by the power supply circuit 6 and supplied with power. 7 (see FIG. 2) is a breaker.

Next, the operation of the present invention will be described. First, when the infrared sensor 1 detects heat and motion generated by the human body, it sends a detection signal to the relay 3. Next, the relay 3 is turned on in response to a signal from the infrared sensor 1 and drives the power relay 4. Then, when the power relay 4 is driven, a current flows through the lighting fixture 2 and the lighting fixture 2 is turned on. Further, in the case of this embodiment, when a person goes outside, for example, the detection signal of the infrared sensor 1 is turned off, and as a result, the lighting fixture 2 is turned off.

[0022]

[Effect of the invention]

 As described above, the device of the present invention is configured, so that not only can power saving be achieved, but also the problem of hygiene caused by an unspecified number of people touching the switch can be solved, and furthermore, low power consumption can be achieved. Humans can be reliably detected over a wide area at low cost and without any restrictions on the installation location.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a preferred embodiment of the device of the present invention.

FIG. 2 is a main part circuit diagram of the above device.

FIG. 3 is a plan view showing an infrared sensor.

FIG. 4 is a front view showing an infrared sensor.

FIG. 5 is a configuration diagram showing another embodiment of the device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Infrared sensor 2 Lighting equipment 3 Relay 4 Power relay 5 Power supply 6 Power supply circuit 7 Breaker 8 Memory relay 9 Ventilation fan

Claims (3)

[Utility model registration claims] 1. An infrared sensor for detecting a human body, and a lighting device for lighting upon receiving a detection signal from the infrared sensor, wherein the infrared sensor is of a pyroelectric type. Lighting equipment. 2. The lighting device with a human sensor according to claim 1, further comprising a timer for controlling a lighting time of the lighting fixture. 3. The lighting device with a human sensor according to claim 1, further comprising a relay with a memory.