JPH10108751A - Illuminator for door knob - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illuminator capable of facilitating the fixing and exchanging operation of a light source means and reducing risks along with the rotation and energizing of a door knob by eliminating a problem on fine appearance with the rotation of the door knob and unnecessitating connecting work between a light source means and a power source. SOLUTION: Electric power supplied from a home power source 34 has its voltage dropped by an AC transformer 33 to energize a primary side coil 21 coiled around the door-side end part of a core bar 11 through connectors 31b and 31a. A magnetic flux generated by this energizing is transmitted to a secondary side coil 22 coiled around the door knob-side end part of the core bar 11 through the core bar 11 to generate electro motive force. In addition, both tip parts of the coil 22 are connected to the bulb 24 through a hole 27 provided in a resin plate 23 to supply power for emitting light as the result. Namely the magnetic flux transmitted by the core bar 11 generates electromagnetic induction to supply power for emitting light for the bulb 24 as the result.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a doorknob illuminating device for illuminating around a doorknob which is gripped when a door is opened and closed.

[0001]

2. Description of the Related Art In a conventional door knob lighting device,
JP-A-56-135678;
5. Illumination window made of a transparent material, which incorporates a light source means and a wiring for supplying light output power on the door side, as shown in Japanese Utility Model Application Laid-Open Nos. 2-18070, 2-34665, and 3-57801. It was possible to emit light toward a target place by setting up the optical fiber and arranging the fibers.

In such an in-door type door knob lighting device having a light source means in a door, since the light source means and the wiring are housed inside the door, the work of attaching and replacing the light source means is performed. Is complicated. Further, depending on the shape of the door knob, there is an aesthetic problem that the light source means installed on the door side is exposed by the rotation of the door knob.

In order to solve the aesthetic problem associated with the rotation of the doorknob, Japanese Patent Application Laid-Open No. 56-59974 discloses a doorknob illuminating device provided with a light source means on the doorknob side. . This makes it possible to equip the door knob with the light source means by extending the lead wire connecting the power source and the light source means. In addition, the illumination device for a doorknob installed in the doorknob shown in FIG. 5 has a terminal block 53 connected to a power supply on the door side, and further has a joint 54 on the doorknob side via a lead wire 52. Means L are incorporated. By connecting the joint 54 and the terminal block 53, the light source means L obtains the power for light emission. According to the door knob lighting device installed in the door knob, the door knob 3
The problem of aesthetics, such as exposure of the light source means due to the rotation of the light source, is eliminated, and work steps such as installation of an illuminating window made of a transparent material and arrangement of fibers can be omitted.

[0004]

However, even in the above-described door-knob-installed door knob lighting device shown in FIG. 5, when the door knob 3 is fitted to the core rod 11, it is connected to a power source together with the core rod 11. The light source means L must be connected to the terminal block 53 via the lead wire 52, and the mounting work of the light source means is still complicated. In addition, there is a possibility that the lead wire 52 will be disconnected due to the twisting force accompanying the rotation of the door knob 3. In addition, if the lead wire 52 is extended to absorb the torsion force and to ensure the easiness of the work, the lead wire 52 may be slackened, resulting in a risk of electric shock or injury. There was a problem with.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to solve the aesthetic problem associated with the rotation of the door knob and to reduce the work of connecting the light source means to the power supply. An object of the present invention is to provide a doorknob lighting device which can be easily attached and replaced with a light source means because it is unnecessary, and has less risk of rotation and energization of the doorknob.

[0006]

According to one aspect of the present invention, there is provided a lighting device for a doorknob comprising a power supply on a door side and a light source means on a doorknob side. In this case, current is supplied without contact.

According to a second aspect of the present invention, a primary coil is wound around the door-side end of the core rod of the doorknob, a secondary coil is wound around the doorknob, and a power supply is connected to the primary coil. In addition, a light source means is connected to the secondary side coil, and power is supplied without contact.

The invention according to claim 3 is characterized in that the core rod of the door knob is made of a ferromagnetic material.

According to a fourth aspect of the present invention, there is provided a lighting device for a doorknob according to any one of the first to third aspects,
The light source means is a light emitting diode (LED).

According to a fifth aspect of the present invention, in the illumination device for a door knob according to any one of the first to fourth aspects,
At least one or more detecting devices for detecting the operating environment of the light source means are provided, and control means for controlling the operation of the light source means based on the detection result is provided.

According to a sixth aspect of the present invention, in the illumination device for a doorknob according to the fifth aspect, the detecting device is a detecting device for detecting the presence or absence of a person.

According to a seventh aspect of the present invention, in the illumination device for a doorknob according to the sixth aspect, the detection device is a detection device for detecting illuminance around the doorknob.

[0013]

According to the illumination device for a contactless doorknob of the present invention,
Since the light source means is provided on the door knob side, an aesthetic problem such as exposure of the light source means accompanying rotation of the door knob is eliminated.

A magnetic flux is generated in the primary coil wound around the door-side end of the core rod of the doorknob by being connected to a power supply and being energized. The primary coil that has generated the magnetic flux is magnetically coupled to the secondary coil wound on the door knob side of the core rod via the core rod. Further, the magnetic flux generated in the primary side coil is transmitted to the secondary side coil via the core rod, and a voltage is induced in the secondary side coil to generate an electromotive force,
As a result, light emitting power is supplied to the light source means connected to the secondary coil.

As described above, since the power for light emission can be supplied from the power supply on the door side to the light source means provided on the door knob side without contact, the direct wiring between the power supply and the light source means becomes unnecessary, and The danger of breakage of the lead wire due to rotation is avoided. Further, since the light source means is attached at the same time when the door knob is fitted to the core rod, the attachment / exchange operation becomes easy. In addition, since the conventional core stick type lock case can be used as it is, the versatility is high.

Further, since the core rod is made of a ferromagnetic material, the utilization efficiency of the generated magnetic flux is increased, and the light emitting power can be efficiently supplied to the light source means. Also, by providing at least one or more detection devices for detecting the operating environment of the light source means, and providing control means for controlling the operation of the light source means based on the detection result, the presence of a person or the surrounding brightness When power is not enough, that is, only when illumination by the light source means is necessary, power for light emission is supplied to the light source means, so that power can be saved and it is economically advantageous.

[0017]

Embodiments of the present invention will be described below. (Embodiment 1) FIG. 1 is an external view of an embodiment of a door knob lighting device according to the present invention.
, 3 indicates a door knob. The door knob 3 is fitted to a distal end of a core rod (not shown). Further, a lock case 5 having the core rod and the latch bolt 12 is provided.
Is housed inside the door 1 and fixed with screws 14.
Further, an infrared sensor 15 as a detecting device for detecting the presence of a person and an illuminance sensor 16 as a detecting device for detecting the illuminance around the door knob 3 are provided at positions close to the door knob on the door surface.

A latch bolt 12 for preventing the door from opening when the door is closed is interlocked with the door knob 3 via a core rod.
Is drawn into the door 1. The door can be opened and closed by this series of operations. The infrared sensor 15 detects infrared rays emitted from the human body, and the illuminance sensor 16 detects ambient brightness. The detection results of the infrared sensor 15 and the illuminance sensor 16 are input to an electronic circuit (not shown) as control means built in the lock case 5, and the electronic circuit controls power supply to a light source means described later.

FIG. 2 is a cutaway perspective view of the door knob lighting device shown in FIG. The core rod 11 is provided via the rectangular parallelepiped core rod 11.
The primary coil 21 wound around the door side end and the secondary coil 22 wound around the other end of the door knob face each other.
Further, the core rod 11 has an adjustment plate 13 provided therein. Core rod 1
1 is preferably made of a ferromagnetic material from the viewpoint of conduction efficiency.

The secondary coil 22 is provided on a resin plate 23. The resin plate 23 is a light bulb 2 as a light source means.
4 and further has a hole 26 and a hole 27. Light bulb 24
Turns the light emitting surface toward the door 1. A door knob (not shown) in which the resin plate 23 is provided is fitted to the end of the core rod 11.

FIG. 3 shows the door knob lighting device A shown in FIG.
FIG. The resin plate 23 has a hole 26 and a hole 27. Both ends of the secondary coil 22 provided on the resin plate 23 are connected to the bulb 24 through the holes 27. Further, the core rod 11 is provided with the hole 2 of the resin plate 23.
Insert 6. The primary coil 21 wound around the door-side end of the core rod 11 is housed in the waterproof case 2. Further, the waterproof case 2 is fixed to the door 1 by screws 4.
Both ends of the primary coil 21 are connected to the connector 31a. The connector 31a is housed in the waterproof case 2 with its connection surface with the connector 31b exposed. Connector 31
b is connected to an AC transformer 33 fixed to the switch plate 3, and the AC transformer 33 is connected to a household power supply 34. Hereinafter, an operation process of the above-described door knob lighting device will be described.

The power supplied from the home power supply 34 is reduced in voltage by the AC transformer 33, and the power is supplied to the connector 31b.
The power is supplied to the primary coil 21 wound around the door-side end of the core rod 11 via the connector 31a. The magnetic flux generated by this energization is transmitted via the core rod 11 to the secondary coil 22 wound around the other end of the core rod 11 on the door knob side, and an electromotive force is generated. Further, both ends of the secondary coil 22 are connected to the light bulb 24 through holes 27 provided in the resin plate 23, and as a result, power for light emission is supplied.
That is, the magnetic flux transmitted by the core rod 11 generates electromagnetic induction in the secondary coil 22, and as a result, electric power for light emission is supplied to the bulb 24.

(Embodiment 2) In this embodiment, a light emitting diode (LED) 25 is used instead of the light bulb 24 of the light source means held by the resin plate 23. FIG. 4 is a schematic view taken along the line AA shown in FIG. The resin plate 23 has a hole 26 and a hole 27. Resin plate 2
3 are connected to the resistor 41 at both ends of the secondary coil 22, and further through the hole 27 to form a light emitting diode (LE).
D) Connect to 25. Also, the core rod 11 is made of resin plate 2.
3 is inserted through the hole 26. The magnetic flux transmitted by the core rod 11 causes electromagnetic induction in the secondary coil 22, and after the voltage is reduced by the resistor 41, light emitting power is supplied to the light emitting diode (LED).

Light emitting diodes (LEDs) do not have high illuminance. However, it shines at a low current, and is rich in color and vivid. Therefore, as shown in the second embodiment, by using a light emitting diode (LED) 25 instead of the light bulb 24 shown in the first embodiment as a light source means, a sufficient illuminance required to the extent necessary around the door knob can be obtained. At the same time, the power consumption can be reduced, and the color of the illumination can be appropriately selected as needed to improve the aesthetic appearance.

[0025]

As described above, in the present invention, since the light source means is provided on the door knob side, an aesthetic problem such as exposure of the light source means accompanying rotation of the door knob is solved. Further, since power for light emission is supplied without contact, wiring is not required, and safety is ensured without disconnection. Also,
When the doorknob is fitted to the core rod, the light source means can be energized at the same time as the fitting, and the mounting and replacement work of the light source means becomes easy. Furthermore, since the conventional core stick type lock case can be used as it is, versatility is high.

[Brief description of the drawings]

FIG. 1 is an external view around a door knob provided with a door knob lighting device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the entire lighting device for a door knob according to one embodiment of the present invention;

FIG. 3 is a schematic view taken in the direction of arrows in FIG. 2A-A.

FIG. 4 is a schematic view taken in the direction of arrows in FIGS. 2A to 2A, showing another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a conventional door knob lighting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 3 Door knob 11 Core rod 21 Primary coil 22 Secondary coil 24 Light bulb 25 Light emitting diode (LED)

Claims (7)

[Claims] An illumination device for a doorknob comprising a power supply on a door side and a light source means on a doorknob side, wherein power is supplied from a power supply source to the light source means in a contactless manner. Lighting device for doorknob. 2. A primary coil is wound around a door-side end of a core rod of a door knob, and a secondary coil is wound around a door knob side.
The lighting device for a doorknob according to claim 1, wherein a power source is connected to the secondary coil and light source means is connected to the secondary coil. 3. The door knob lighting device according to claim 2, wherein the core rod of the door knob is made of a ferromagnetic material. 4. The light source means is a light emitting diode (LED).
The lighting device for a doorknob according to any one of claims 1 to 3, wherein: 5. The apparatus according to claim 1, further comprising at least one detecting device for detecting an operating environment of said light source means, and a control means for controlling the operation of said light source means based on the detection result. 5. The lighting device for a doorknob according to any one of 4. 6. A lighting device for a door knob according to claim 5, wherein said detecting device is a detecting device for detecting the presence or absence of a person. 7. A lighting device for a door knob according to claim 6, wherein said detecting device is a detecting device for detecting illuminance around a door knob.