JP3155202U - Optical door open / close accident prevention device - Google Patents

Abstract

[PROBLEMS] To automatically notify a person who is trying to open a door that cannot be seen through to the other side that there is a person behind the door and to prevent an accident caused by suddenly opening the door. A door opening / closing accident prevention device is provided. A light sensor is installed on a wall near a power source, and a light emitter that operates in response to the signal from the sensor is used to detect the presence of a person. By using it for display, wiring between the light emitting device and the display device can be omitted, and the power supply for the display device can be made unnecessary. This is an inexpensive optical door opening / closing accident prevention device that can be attached to a place that is easily visible. [Selection] Figure 1

Description

  The present invention automatically informs people who are trying to open a door that cannot be seen through to the other side that there is a person behind the door and prevents accidents caused by sudden opening of the door. Type door opening and closing accident prevention device.

  Conventionally, in order to inform the person who is trying to open the door that there is a person behind the door, a transparent window is installed on the door, or a person is detected using a human sensor or an imaging device. It is informed by the type display and receiver.

  It is unsuitable to add windows to the door when there are things that are difficult for people to see or when they are not appropriate for crime prevention or disaster prevention. In particular, it is not suitable for doors such as emergency stairs.

  When using human sensors or imaging devices, most of them use a commercial power supply, so if you attach it to a place away from the power supply or a moving object such as a door, the wiring distance will be longer or the wiring of the moving part will be It will be necessary to reinforce the wire and process the wiring inside the door. For this reason, it takes time and money, and if it is attached to the wall portion close to the power source to avoid this, it becomes difficult for a person to notice.

  For the same reason as described above, when the display unit is attached to a wall or the like, it becomes difficult for a person who wants to open the door quickly, so the size of the display unit must be increased or brightened. For this reason, the cost is further increased and it is not easy to install.

An apparatus using a human sensor is described in Japanese Patent Application Laid-Open No. 2004-127068. The idea described in the publication is to detect a person approaching a door with a human sensor, and to convey a message or issue an alarm to the person with a voice or an electric character display. To use it, there is unnecessary equipment, and it costs money.
In addition, since the device described in the publication is directed in the same direction as the place where the display detects a person, it cannot be used as it is for the purpose of the present invention. I don't see it as a problem here.

  Japanese Patent Application Laid-Open No. 2008-33523 discloses an apparatus in which an imaging device and a human sensor are attached in a place where the door is easy to see. The idea described in the publication is to detect a person approaching the door with a human sensor and record the person's video, which is useful for crime prevention. There is no equipment, and there is a waste of money.

JP 2004-127068 A JP 2008-33523 A

  The above-mentioned costs are incurred when connecting the part that detects the presence of a person and the display that displays the result with an electric wire or optical fiber, so the connection between the part is inexpensive and the display is also behind the door. The challenge is to make it cheaper that does not require any special energy for display, focusing only on the presence or absence of people.

  The present invention emits light when a device that detects the presence of a person detects the person, condenses the light on a display, and uses it for display, thereby transmitting between the device that detects the presence of a person and the display. It can be used as a display as it is by replacing it with a means and flashing this light, or it can be used for the backlight of the display or the illumination of the display surface, thereby saving the energy of the display. This is an optical door open / close accident prevention device that reduces the cost of

  The optical door open / close accident prevention device according to the present invention is a light sensor that uses commercial power and a light emitting device that emits light in response to the signal even if it is attached to a fixed location such as a wall. Because it is connected, there is no need to connect the door and the wall, or to process and wire the interior of the door, so it can be easily attached at low cost. This can be useful for preventing accidents caused by damaging people or objects caused by suddenly opening a door that the other side cannot see.

It is a top view which shows the layout at the time of attaching this invention to the side which can open a door. A ^{A ~} A section of FIG. FIG. 1 is a cross-sectional view taken along a line A ^to A in FIG. 1 showing a part showing details between the light emitter of the present invention and the display.

  When the present invention is attached to a door or the like connected to an emergency staircase, the human sensor 1, 1 and the light emitter 3 of FIG. 1 are attached to a wall where power supply work is easy, and the indicator 7 tries to open the door 8. Installed near a knob that is easy to see. The light from the light emitter 3 reaches the light receiver 5 through a path indicated by a dotted line in FIG.

  The details of this portion are shown in FIG. 3, and the light emitter 3 is composed of a light emitter 10 and a lens 11, and when the light emitter 10 is turned on by a signal from the human sensor 1, the lens 11 causes the knob of the door. The light is collected on the surface of the mirror 12 in the light receiver 5 attached in the vicinity, passes through the hollow light guide 6 passing through the door, and hits the diffuser plate 13 that scatters and transmits the light. The light serves as a backlight of the display board 14 on which characters indicating that a person is present are written.

  A door switch 4 for detecting the open / closed state of the door is attached to the beam portion of the door shown in FIGS. 1 and 2, combined with the human sensor 1, and the light emitter 10 is not turned on when the door is open. Like that.

DESCRIPTION OF SYMBOLS 1 ... Human sensor 2 ... Lead wire 3 ... Light emitter 4 ... Door switch 5 ... Light receiver 6 ... Light guide 7 ... Indicator 8 ... Door 9 ... Door knob 10 ··· Light emitting body 11 · · Lens 12 · · Mirror 13 · · Scatter plate 14 · · Display plate

Claims (2)

  Using a light-emitting device that lights in response to a signal from the presence sensor, it automatically notifies the person trying to open the door that there is a person or object on the other side of the door with a structure that cannot be seen. In an accident prevention device, a light emitting device that detects the presence of a person and attaches a lens that can change the focal length and the direction of the light to be projected. An optical door open / close accident prevention device that projects light onto the display panel by placing it on the light receiving element.   The door switch for detecting the open / closed state of the door is attached to the beam portion of the door according to claim 1 and is combined with the human sensor of claim 1 so that the light emitter is not turned on when the door is open. Optical door opening / closing accident prevention device with added function.

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