JP2016191287A - Door lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable lighting by supplying electric power to an LED in noncontact with a power source even if power supply wiring is not executed in a door.SOLUTION: In an electromagnetic induction system lighting device for lighting a light source installed in a door when closing the door and putting out the light when opening, the light source is installed in the door or a grip of the door, and an induction coil for electromagnetic induction is installed on the movable side such as the door and a door installing tool, and a power supply coil for the electromagnetic induction is installed on the opposite side such as a column, a door frame and the door installing tool by approaching the induction coil when closing the door and separating from the induction coil when opening the door, and the power supply coil and the induction coil mutually approach in noncontact in a door-closed state, and the light source is lighted by an induction current by inducing the induction current to the noncontact induction coil by a power source supplied to the power supply coil, and the light source is put out by cutting off the induction current when separating the power supply coil and the induction coil by opening the door.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting device for various doors (hereinafter referred to as “doors”) such as hinged doors (single hinged doors, double hinged doors (viewing doors)), sliding doors, folding doors, retractable doors, revolving doors, etc.

  In recent years, there are illumination devices (Patent Documents 1 and 2) in which an LED is attached to a door knob for indicating the location of a building door, for emergency lighting, or for decoration.

  Patent Documents 1 and 2 require wiring for supplying power to the lighting device attached to the knob of the door. However, since the door moves (opens and closes), wiring to the knob becomes complicated and troublesome. When using a power battery, the battery needs to be replaced, and management is troublesome.

Japanese Utility Model Publication No. 2-018070 Japanese Patent Laid-Open No. 10-108751

  The door lighting device of the present invention is to enable lighting by supplying power to the light source in a non-contact manner with a power source, without supplying power to the door.

(Door lighting device)
The door lighting device of the present invention is an electromagnetic induction type lighting device in which the light source attached to the door is turned on when the door is closed and turned off when the door is opened. The light source is attached to the door or the handle of the door. The induction coil is attached to the movable side of the door, door mounting jig, etc., and the electromagnetic induction power supply coil approaches the induction coil when the door is closed, and the pillar, door frame, door that separates from the induction coil when the door is opened The feeding coil and the induction coil are attached to the opposite side of a mounting jig or the like, and approach each other in a non-contact state with the door closed, and an induced current is applied to the non-contact induction coil by a power source supplied to the feeding coil. When induced, the light source is turned on by the induced current, and when the door is opened and the feeding coil and the induced coil are separated, the induced current is cut off and the light source is turned off.

(Induction coil to hinge, mounting structure 1 for feeding coil)
When the door mounting jig is a hinge, it has a movable side connected to the door so that it can move as the door opens and closes, and an opposite side that approaches the movable side when the door is closed and separates from the movable side when the door is opened When the induction coil is attached to the movable side, the feeding coil is attached to the opposite side, the door is closed, and the movable side approaches the opposite side, the feeding coil and the induction coil approach each other in a non-contact manner, and the power supplied to the feeding coil When the induction current is induced in the non-contact induction coil, the light source is turned on by the induction current, and when the door is opened and the wings are separated, the feeding coil and the induction coil are separated, and the induction current is cut off and the light source is cut off. Can be turned off.

(Induction coil to hinge and feed coil mounting structure 2)
When the door mounting jig is a hinge, the hinge includes at least two wings, a shaft cylinder linked to each wing, and a core rod that is inserted into the shaft cylinder and connects the wings. The wing is attached to the opposite side, the other wing is attached to the door, and the door is connected to be opened and closed, the feeding coil is attached to the opposite side wing, the induction coil is attached to the wing on the door side, and the door is When the two wings close and close, the feeding coil and the induction coil approach each other in a non-contact manner, and an induction current is induced in the non-contact induction coil by a power source fed to the feeding coil, and the light source is turned on by the induction current. When the door is opened and the two wings are separated, the feeding coil and the induction coil are separated, the induced current is cut off, and the light source is turned off.

(Induction coil to hinge, mounting structure 3 for feeding coil)
When the door mounting jig is a hinge, the feeding coil is mounted on the opposite side cylinder, the induction coil is installed on the door side cylinder, and when the door is closed and the both cylinders approach, the feeding coil and the induction coil are When the non-contacting approach is approached, an induction current is induced in the non-contact induction coil by a power source fed to the power supply coil, the light source is turned on by the induction current, the door is opened, and the both cylinders are separated from each other. The coil and the induction coil may be separated so that the induced current is cut off and the light source is turned off.

(Induction coil to hinge, structure for attaching feeding coil 4)
When the door mounting jig is a hinge, the feeding coil is mounted on the hinge core rod, the induction coil is mounted on the door-side shaft cylinder, and the door closes and the core rod and the shaft cylinder approach, the feeding coil and induction coil Approaching in a non-contact manner, an induction current is induced in the non-contact induction coil by a power source fed to the power supply coil, the light source is turned on by the induction current, the door is opened, and the core rod and the shaft cylinder are separated. The feeding coil and the induction coil are separated from each other so that the induced current is cut off and the light source is turned off.

(Induction coil to hinge and attachment structure 5 for feeding coil)
When the door mounting jig is a hinge, the feed coil is mounted on the wing on the opposite side, the induction coil is mounted on the shaft cylinder on the door side, and when the door is closed and the wing and the shaft cylinder approach, the feed coil and the induction coil are When a non-contact approach, an induction current is induced in the non-contact induction coil by a power source fed to the power supply coil, a light source is turned on by the induction current, the door is opened, and the wing and the shaft cylinder are separated from each other. The feeding coil and the induction coil may be separated so that the induced current is cut off and the light source is turned off.

(Induction coil to hinge and feed coil mounting structure 6)
When the door mounting jig is a hinge, the feeding coil is mounted on the opposite side cylinder, the induction coil is mounted on the door side wing, and when the door closes and the shaft cylinder and the wing approach each other, the feeding coil and induction coil are When a non-contact approach, an induction current is induced in the non-contact induction coil by a power source fed to the power supply coil, the light source is turned on by the induction current, the door is opened, and the shaft tube and the wing are separated from each other. The feeding coil and the induction coil may be separated so that the induced current is cut off and the light source is turned off.

(Unitization of induction coil and feeding coil)
The induction coil of the door lighting device is housed in a case together with at least an electric circuit board and electronic parts necessary for power reception to form a power receiving unit, and the power feeding coil is housed in the case together with at least an electric circuit board and electronic parts necessary for power feeding. The power receiving unit may be provided on the movable side and the power feeding unit on the opposite side.

  The feeding coil and / or the induction coil are either bent or provided with a bendable flexibility so that the bending portion such as the outer peripheral surface of the hinge core and the inner peripheral surface of the shaft tube can be easily provided. Can be attachable.

(External power supply)
The door lighting device includes a connector that can be connected to an external power source (a power source obtained by converting a commercial power source into a voltage suitable for driving a light source) on the opposite side. The connector can be provided inside or outside on the opposite side.

(Wiring structure)
The door lighting device may be configured such that a power supply line connecting the light source and the induction coil is wired inside the door and / or the handle and cannot be seen from the outside.

(Battery)
The door lighting device charges the secondary battery (battery) with the induced current, and automatically switches to the power supply from the battery when the commercial power supply fails (when the power supply to the power supply coil is stopped). The light source may be turned on by power supply.

(1) Even if the power line is not wired to the door and the door and the opposite side are not in contact with each other, if the door is facing the opposite side, the light source is turned on simply by supplying power to the power supply coil. There is no trouble of wiring.
(2) When each of the induction coil and the feeding coil is unitized, the unit can be easily attached to the door and the opposite side.
(3) When the power supply coil and the induction coil are provided on the hinge, the power supply line to the power supply coil and the power supply line from the induction coil to the light source can be wired near the hinge, and these wirings are not complicated.
(4) In the case where each coil is curved or is provided with a bendable flexibility, it can be easily attached to the outer periphery of the hinge core and the shaft tube.
(5) If the power feeder includes a connector that can be connected to an external power source, power can be supplied simply by connecting the external power source to the connector.
(6) If the induction coil and the power supply line of the light source are installed inside the door and / or the handle, the appearance is good without the wiring coming out. If the power supply line is housed in a case that cannot be seen from the outside, the wiring is not visible from the outside, and the appearance is good.
(7) If the secondary battery (battery) can be charged with the induced current, the light source can be turned on with the battery power supply at the time of power failure, which is convenient for evacuation guidance at the time of power failure.

The front schematic diagram which shows an example of the single swing door equipped with the door lighting device of this invention. The schematic diagram which shows an example of the state which opened the single swing door equipped with the door lighting device of this invention. It shows an example of a hinge equipped with the door lighting device of the present invention, (a) is an explanatory diagram when the hinge is opened, (b) is an explanatory diagram when the hinge is closed. The other example of the hinge equipped with the door lighting device of this invention is shown, (a) is explanatory drawing at the time of opening a hinge, (b) is explanatory drawing at the time of closing a hinge. Explanatory drawing which shows an example of the doorknob equipped with the door lighting device of this invention. The plane schematic diagram which shows an example of the Kannon door (double swing door) equipped with the door lighting device of this invention. The plane schematic diagram which shows an example of the sliding door equipped with the door lighting device of this invention.

  An example of a door equipped with the door lighting device of the present invention will be described with reference to FIGS. The light source of the present invention may be any of LED, organic EL, liquid crystal, and other light emission as long as it is small and thin that can be attached to a door or a handle and can emit light. The case will be described as an example.

(Embodiment 1: hinged door)
Although the door 1 of the door lighting device of the present invention may be any of a single door, a sliding door, a double door, and other doors, a case of a single door will be described below as an example. The hinged doors such as single hinged doors and double hinged doors can be attached to the opposing part (opposite side) 2 such as a pillar and a frame by a door attachment jig. No. 3 will be described as an example.

  1 and 2 show the case where the door is a single door. The door (movable side) 1 is attached to a facing portion (opposite side) 2 such as a pillar or a frame by a door mounting jig (hinge) 3 in the same manner as a general-purpose single hinged door. A vertically long cylindrical handle (handle) 4 is attached to the open / close side of the single door 1. The handle 4 has a vertically long translucent resin pipe 4a covered with metal covers 4b on both the upper and lower ends, accommodates and fixes the LED 5 (FIG. 2) on the lower end side of the pipe 4a, and the inner surface of the pipe 4a is uneven. Alternatively, a reflective light guide structure (light diffusion structure) is used so that LED light emitted upward from the LED 5 is diffused in the pipe 4a and irradiated from the entire length of the entire inner surface of the pipe 4a to the outside. . The LED 5 can be housed and fixed on the upper end side of the pipe 4a so that the LED light is emitted downward.

  As shown in FIG. 2, the open / close end 1 a of the single door 1 is equipped with a receiver (power receiver) 6, which is on the opposite side 2 and opposite to the open / close end 1 a of the single door 1 (on the opposite side end). Part) 2a is equipped with a transmitter (power feeder) 7, and the induction coil 6a of the power receiver 6 and the power supply coil 7a of the power feeder 7 are arranged opposite to each other so that they can be inductively coupled.

[Power receiving unit, power supply unit]
As shown in FIG. 2, the power receiver 6 includes an induction coil 6a, a circuit board 6b, and the like. The circuit board 6b includes circuits necessary for power reception, such as a rectifier circuit, a voltage conversion circuit, and electronic components necessary for the circuit configuration. And a device are incorporated so that a DC current suitable for driving the LED 5 can be supplied. The circuit board 6b, electronic components, and the like are housed in a single case 8 together with the induction coil 6a to form a power receiving unit 9, and the power receiving unit 9 is housed and fixed in a housing recess opened at the open / close end 1a of the single door 1. is there.

  As shown in FIG. 2, the power feeder 7 includes a power feeding coil 7a, a circuit board 7b, and the like. The circuit board 7b has a circuit necessary for power transmission, for example, a power supply circuit, and electronic components and devices necessary for the circuit configuration. It has been incorporated. The circuit board 7b, electronic components, and the like are housed in a case 10 together with a power supply coil 7a to form a power supply unit 11, and the power supply unit 11 is accommodated and fixed in an accommodation recess opened at the opposite end 2a facing the door 1. It is.

  The case 8 of the power receiver 6 and the case 10 of the power feeder 7 are preferably made of an insulating material such as resin or rubber.

  A power supply line 12 is wired between the power receiver 6 and the LED 5 in FIGS. A current (inductive current) induced in the induction coil 6 a of the power receiver 6 is supplied to the LED 5 through the feeder line 12. The induced current is directly or directly converted into voltage and current necessary for driving the LED 5 in the power receiver 6 and supplied to the LED 5. A power supply line 13 is wired to the power feeder 7. As the external power source, a pulse voltage of about 5V, 12V, or 24V or other appropriate power source can be used.

[Operation of FIG. 1 and FIG. 2: LED emission]
The power receiving unit 9 and the power feeding unit 11 housed and fixed as shown in FIG. 1 and FIG. 2 face each other in a non-contact manner with a gap where the induction coil 6a and the power feeding coil 7a can be inductively coupled when the single door 1 is closed. When the hinged door 1 is opened, the induction coil 6a and the feeding coil 7a are separated (no longer face each other). When power is supplied to the power supply coil 7a (current is supplied) in the facing state (the door is closed), an induction current is induced in the induction coil 6a by electromagnetic induction of the induction coil 6a and the power supply coil 7a. The current is supplied and the LED 5 emits light. The LED light is diffused by the light diffusion structure on the inner surface of the pipe 4a, and is irradiated to the outside from the entire length of the entire surface of the pipe 4a. When the single door 1 is opened, the induction coil 6a and the feeding coil 7a are opposed (separated), induction of induction current is stopped, and the LED 5 is turned off.

[hinge]
The hinge 3 is provided with a movable side connected to the door 1 so as to be movable as the door 1 is opened and closed, and an opposite side that approaches the movable side when the door is closed and separates from the movable side when the door is opened. When the feeding coil is attached to the opposite side of the induction coil, the door is closed and the movable side approaches the opposite side, the feeding coil and the induction coil approach each other in a non-contact manner, and the non-contact is caused by the power supplied to the feeding coil. When an induction current is induced in the induction coil, the light source is turned on by the induction current, and when the door is opened and the wings are separated, the feeding coil and the induction coil are separated, the induction current is cut off, and the light source is turned off. Can be.

  1 is connected to the opposite side 2 by a hinge 3 so as to be opened and closed. As shown in FIGS. 3 (a) and 3 (b), the hinge 3 has shaft cylinders 14a and 15a on the two wings 14 and 15, respectively, and is inserted into the shaft cylinders 14a and 15a so that the core rod 3a does not fall off. The two wings 14 and 15 can be opened and closed, and one of the wings 14 and 15 is connected and fixed to the single door 1 and the other is connected and fixed to the opposite side 2 (FIG. 1). The hinged door 1 can be opened and closed.

As shown in FIG. 3A, the feeding coil 7a is attached to the outer periphery of the core 3a of the hinge 3, and the induction coil 6a is attached to the inner peripheral surface of the shaft cylinder 15a. When the wings 14 and 15 are closed (the door 1 is closed), the coils 6a and 7a face each other in a non-contact manner with an inductive coupling interval.

  The feeding coil 7a can be provided with a recess in a part of the outer peripheral surface of the core rod 3a, and can be housed and fixed in the recess. The induction coil 6a may be provided with a recess in a part of the inner peripheral surface of the shaft cylinder 15a and accommodated and fixed in the recess. By housing and fixing in these recesses, the feeding coil 7a and the induction coil 6a do not come into contact with each other, and are not rubbed and worn. The induction coil 6a can be bent in accordance with the inner diameters of the shaft cylinders 14a and 15a, or can be formed in advance by being bent in accordance with the inner diameter thereof. The power feeding coil 7a can be bent according to the outer diameter of the core rod 3a, or can be previously bent and molded according to the outer diameter of the core rod 3a.

  The power feeding unit 11 can be housed and fixed in the recess of the core rod 3a, and the power receiving unit 9 can be housed and fixed in the recess of the shaft tube 15b. In either case, an external power supply can be supplied to the feeding coil 7a. The feeder 12 (FIG. 2) is wired by making a hole in the core rod 3a and inserting it. The feeding coil 7 a can be attached to the shaft cylinder 14 a of the wing 14 of the hinge 3 on the opposite side 2, and the induction coil 6 a can be attached to the shaft cylinder 15 a of the wing 15 of the hinge 3 of the door 1.

  In FIG. 4A, one wing 15 of the hinge is attached to the door 1 and the other wing 14 is attached to the opposite side 2 (FIG. 1), and the feeding coil 7a is attached to the wing 14 on the opposite side 2. The induction coil 6 a is attached to the wing 15 of the door (movable side) 1. When the door 1 is closed, the feeding coil 7a and the induction coil 6a approach (opposite) as shown in FIG. 4B, and both the coils 6a and 7a are electromagnetically coupled to induce an induction current in the excitation coil 6a and the light source is turned on. Then, when the door 1 is opened, the induced current is cut off as shown in FIG. 4A, and the light source is turned off.

  In the present invention, the power supply coil 7a can be attached to the wing on the opposite side 2 and the excitation coil 6a can be attached to the shaft cylinder on the movable side 1, so that the light source can be turned on and off by opening and closing the door. Further, the feeding coil 7a can be attached to the shaft cylinder on the opposite side 2 and the excitation coil 6a can be attached to the wing on the movable side 1, so that the light source can be turned on and off by opening and closing the door.

  In the present invention, even when the hinge 3 is a flag hinge (not shown), the power supply coil 7a is attached to the core of the flag hinge, the excitation coil 6a is attached to the shaft cylinder of the movable side 1, and the light source is turned on by opening and closing the door. It can also be turned off. It is also possible to attach a feeding coil 7a to the wing on the opposite side 2 and an excitation coil 6a to the wing on the movable side 1 so that the light source is turned on and off by opening and closing these two wings (opening and closing the door). It is also possible to attach the feeding coil 7a to the shaft cylinder on the side 2 and the excitation coil 6a to the shaft cylinder on the movable side 1 so that the light sources are turned on and off by opening and closing the doors. The power supply coil 7a is attached to the wing, the excitation coil 6a is attached to the shaft cylinder on the movable side 1, and the light source is turned on and off by opening and closing the door. An excitation coil 6a can be attached to the wing on the side 1, and the light source can be turned on and off by opening and closing the door.

[door knob]
The handle 4 may have a shape and structure other than those shown in FIGS. A door knob as shown in FIG. 5 may be used. As with a general-purpose door knob, the handle (door knob) 4 is configured such that the door 1 is locked to the opposite side 2 when rotated in the direction of the arrow, and the lock is released when rotated in the reverse direction. In the present invention, the LED 5 can be attached to any position in the circumferential direction of the cylindrical portion 17 on the outer periphery of the rotary shaft 16 of the handle 4. In this case, the entire circumference or part of the circumferential direction of the cylindrical portion 17 is used as a light transmitting portion, and LED light is emitted from the light transmitting portion to the outside. Wiring to the LED 5 can be performed through the door 1 or the rotating shaft 16 of the door knob 4.

  As shown in FIG. 1, a connector 18 to which an external power source can be connected is connected to the opposite side 2. The connector 18 can also be built in the opposite side 2.

(Embodiment 2: Kannon door)
The door in the present invention may be a double door. FIG. 6 shows an example of a Kannon door. A door (a kannon door) 1 in FIG. 6 is attached to a left and right two opposite sides 2 by a hinge 3 so as to be opened and closed. The opposite side 2 is a column or a mounting frame.

  In FIG. 6, a handle 4 is attached to each of the two Kannon doors 1. Each handle 4 incorporates an LED (not shown) as in the case of FIG. The LED mounting position may be not in the handle 4 but in the vicinity of the handle 4. A power receiving unit 9 is attached to the opposite location of one of the doors 1 and a power supply unit 11 is attached to the opposite location of the other door 1 and a power supply coil (not shown) of the power supply unit 11 and the power receiving unit. Nine induction coils (not shown) are arranged so as to be inductively coupled. A feeding line 12 is wired between the LED of one of the doors 1 and the power receiving unit 9, and between the LED of the other door 1 and the power feeding unit 11, and a power line 13 is wired in the door 1. Has been. A connector 18 to which an external power supply can be connected is connected to the power line 13. The connector 18 can also be built in the opposite side 2.

(Embodiment 3: sliding door)
The door in the present invention may be a sliding door. FIG. 7 shows an example of a sliding door. In FIG. 7, a sliding door (sliding door) 1 is built between the left and right opposite sides (for example, pillars) 2, and the sliding door 1 can slide to the left and right in FIG.

  In FIG. 7, an LED (not shown) is attached to or near a pull handle (handpiece: not shown) provided at one end of each of the two doors 1 in the sliding direction. A power receiving unit 9 is attached to the right end of the left sliding door 1 in FIG. 7, and a power supply line 12 is wired between the power receiving unit 9 and the LED 5. A feeding unit 11 is attached to the left end of the right sliding door 1 in FIG. A feeding line 12 is wired between the feeding unit 11 and the LED of the right sliding door 1. An induction coil (not shown) of the power receiving unit 9 and a power supply coil (not shown) of the power supply unit 11 are arranged so as to be inductively coupled.

  Further, a power receiving unit 9 is attached to the right end of the right sliding door 1 in FIG. 7, a power supply unit 11 is attached to the opposite side 2 in FIG. 7, and a power supply coil of the power supply unit 11 (not shown). ) And the induction coil (not shown) of the power receiving unit 9 are disposed so as to be inductively coupled. A power supply line 13 is wired to the power feeding unit 11 on the opposite side 2 on the right side of FIG. 7, and a connector 18 is wired to the power supply line 13. The connector 18 can be built in the opposite side 2.

(Battery)
In the present invention, the induced current can be charged in a battery (secondary battery). In this case, when the commercial power supply is out of power, it is possible to automatically switch to power supply from the battery so that power is supplied from the battery to the LEDs. Thereby, even when a power failure occurs, the LED is lit and the location of the handle is known. Moreover, the surroundings are illuminated with the LED light and can be used as evacuation guidance illumination. It is suitable to use a small battery with a large charge capacity such as a lithium battery or a nickel metal hydride battery.

  The shape and structure of the door lighting device of the present invention may be shapes and structures other than those described above. The attachment position of the handle and the LED may be a place other than the illustration and explanation, and the wiring place and the like may be other than the illustration and explanation. In the case of a sliding door, three or more doors may be used.

1 Door (movable side)
1a Open / close end 2 Opposite side 2a Opposite side end 3 Hinge 3a Core rod 4 Handle (door knob)
4a pipe 4b cover 5 LED (light source)
6 Receiver (power receiver)
6a induction coil 6b circuit board 7 transmitter (feeder)
7a Power supply coil 7b Circuit board 8 Case (of power reception unit) 9 Power reception unit 10 Case (of power supply unit) 11 Power supply unit 12 Power supply line 13 Power supply line 14, 15 Wings 14a, 15b Shaft tube 16 Rotating shaft 17 Tube portion 18 Connector

Claims (12)

In the electromagnetic induction type lighting device that the light source attached to the door is turned on when the door is closed and turned off when the door is opened,
The light source is attached to the door or door handle,
The induction coil for electromagnetic induction is attached to the movable side of doors, door mounting jigs, etc.
When the door is closed, the induction coil approaches the induction coil, and when the door is opened, the induction coil is attached to the opposite side of the pillar, door frame, door mounting jig, etc.
The feeding coil and the induction coil approach each other in a non-contact state with the door closed, and an induction current is induced in the non-contact induction coil by the power supplied to the feeding coil, and the light source is turned on by the induction current. Then, when the door is opened and the feeding coil and the induction coil are separated, the induced current is cut off and the light source is turned off.
A door lighting device characterized by that. The door lighting device according to claim 1,
The door mounting jig is a hinge, and the hinge has a movable side connected to the door so that it can move as the door is opened and closed, and an opposite side that is close to the movable side when the door is closed and away from the movable side when the door is opened. Prepared,
When the induction coil is attached to the movable side and the feeding coil is attached to the opposite side, the door closes and the movable side approaches the opposite side, the feeding coil and the induction coil approach each other in a non-contact manner, and the power source fed to the feeding coil When an induction current is induced in the non-contact induction coil, the light source is turned on by the induction current, and when the door is opened and the wings are separated, the feeding coil and the induction coil are separated, the induction current is interrupted, and the light source is I turned it off,
A door lighting device characterized by that. In the door lighting device according to claim 2,
The hinge has at least two wings, a shaft that works with each wing, and a core rod that is inserted into the shaft and connects the wings.
One wing is attached to the opposite side, the other wing is attached to the door, and the door is connected to be opened and closed,
When the feeding coil is attached to the wing on the opposite side and the induction coil is attached to the wing on the door side, when the door is closed and the two wings approach each other, the feeding coil and the induction coil approach each other in a non-contact manner and are fed to the feeding coil. An induced current is induced in the non-contact induction coil by the power source and the light source is turned on by the induced current,
When the door is opened and the two wings are separated, the feeding coil and the induction coil are separated, the induced current is cut off, and the light source is turned off.
A door lighting device characterized by that. In the door lighting device according to claim 2,
The hinge has at least two wings, a shaft that works with each wing, and a core rod that is inserted into the shaft and connects the wings.
One wing is attached to the opposite side, the other wing is attached to the door, and the door is connected to be opened and closed,
The feeding coil is mounted on the opposite side cylinder and the induction coil is installed on the door side cylinder. When the door is closed and the both cylinders approach, the feeding coil and the induction coil approach each other in a non-contact manner. An induced current is induced in the non-contact induction coil by a power supply to be fed, and the light source is turned on by the induced current,
When the door is opened and the shafts are separated, the feeding coil and the induction coil are separated, the induced current is cut off, and the light source is turned off.
A door lighting device characterized by that. In the door lighting device according to claim 2,
The hinge has at least two wings, a shaft that works with each wing, and a core rod that is inserted into the shaft and connects the wings.
One wing is attached to the opposite side, the other wing is attached to the door, and the door is connected to be opened and closed,
The feeding coil is mounted on the hinge core rod, and the induction coil is mounted on the door side cylinder. When the door is closed and the core rod and the shaft cylinder approach each other, the feeding coil and the induction coil approach each other in a non-contact manner. An induction current is induced in the non-contact induction coil by a power source fed to the light source, and the light source is turned on by the induction current,
When the door is opened and the core rod and the shaft cylinder are separated, the feeding coil and the induction coil are separated, the induced current is cut off, and the light source is turned off.
A door lighting device characterized by that. In the door lighting device according to claim 2,
The hinge has at least two wings, a shaft that works with each wing, and a core rod that is inserted into the shaft and connects the wings.
One wing is attached to the opposite side, the other wing is attached to the door, and the door is connected to be opened and closed,
The feeding coil is mounted on the wing on the opposite side, the induction coil is mounted on the shaft cylinder on the door side, and when the door is closed and the wing and the shaft cylinder approach each other, the feeding coil and the induction coil approach non-contactingly, An induced current is induced in the non-contact induction coil by a power supply to be fed, and the light source is turned on by the induced current,
When the door is opened and the wing and the shaft cylinder are separated, the feeding coil and the induction coil are separated, the induced current is cut off, and the light source is turned off.
A door lighting device characterized by that. In the door lighting device according to claim 2,
The hinge has at least two wings, a shaft that works with each wing, and a core rod that is inserted into the shaft and connects the wings.
One wing is attached to the opposite side, the other wing is attached to the door, and the door is connected to be opened and closed,
When the feeding coil is mounted on the opposite side shaft cylinder and the induction coil is mounted on the door side wing, and when the door is closed and the shaft cylinder and the wing approach each other, the feeding coil and the induction coil approach non-contactingly, An induced current is induced in the non-contact induction coil by a power supply to be fed, and the light source is turned on by the induced current,
When the door is opened and the shaft cylinder and the wing are separated, the feeding coil and the induction coil are separated, the induced current is cut off, and the light source is turned off.
A door lighting device characterized by that. In the door lighting device according to any one of claims 1 to 7,
The induction coil is housed in a case together with at least an electric circuit board and electronic components necessary for power reception to form a power transmission unit,
The power supply coil is housed in a case together with at least an electric circuit board and electronic components necessary for power supply to form a power supply unit,
The power receiving unit is mounted on the movable side, and the power feeding unit is mounted on the opposite side.
A door lighting device characterized by that. In the door lighting device according to any one of claims 1 to 8,
Either or both of the feeding coil and the induction coil are curved or are provided with flexibility capable of bending.
A door lighting device characterized by that. In the door lighting device according to any one of claims 1 to 9,
A connector that can be connected to an external power supply is provided on the opposite side, and the connector is provided inside or outside on the opposite side.
A door lighting device characterized by that. In the door lighting device according to any one of claims 1 to 10,
The power supply line connecting the light source and the induction coil is wired inside the door and / or handle so that it cannot be seen from the outside.
A door lighting device characterized by that. In the door lighting device according to any one of claims 1 to 11,
Inductive current was charged to the secondary battery, and when the AC power supply was interrupted, the power supply was automatically switched from the secondary battery to the light source, and the light source was turned on.
A door lighting device characterized by that.

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