JP2002008876A - Lighting circuit for leg light in beds etc. - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically illuminate the floor surface around the feet of a bed in the event of a power failure. SOLUTION: A lighting circuit 14 at a power failure is connected in between the primary side of a rectifier circuit 11 and the output side leading to a foot light 12 of a lighting circuit 10 in parallel. In the lighting circuit 14 at a power failure, a coil C side of a relay 15 is connected to the primary side of the rectifier circuit 11 of the lighting circuit 10, a contact T side thereof is connected to the output side leading to the foot light 12 of the lighting circuit 10 in parallel, and a battery 16 is connected in a circuit from the contact T to the foot light 12 in series. In this constitution, when a power fails, a current to the coil C side of the relay 15 is cut off and the contact T is closed by being demagnetized. Thus, the lighting circuit 14 at a power failure is closed and the foot light 12 is illuminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a
The floor around the feet of the bed was automatically illuminated.
The present invention relates to a lighting circuit for a leg light in a bed or the like.

[0002]

2. Description of the Related Art For example, when the user gets up on the floor of the bed 1 at night and puts his feet on the floor beside the bed 1 and moves on foot, or when he returns to the bed 1, the inside of the room is illuminated. Sometimes it's dark and your feet are hard to see, so you have to move around by fumbling. Therefore, as shown in FIG. 2, a foot light 3 for illuminating the floor under the bed and the surroundings is provided on the lower surface of the floor 2 of the bed 1, and the switch 5 of the headboard 4 is turned on when necessary. The leg light 3 is turned on. The underlight 3 has a lighting circuit 6 as shown in FIG. 3. The lighting circuit 6 converts a commercial AC power supply into a direct current by a rectifier circuit 7 and turns on and off by turning on and off a switch 5. I have.

[Problems to be solved by the invention]

Therefore, the lighting circuit 6 in the underlight 3
Is a circuit configuration that can be turned on only by turning on the switch 5, and unfortunately,
It does not work because the power is cut off in the event of a power outage, and in the event of a power outage, especially at midnight, such lighting installations are completely useless. The present invention has been proposed in view of the above background, and provides a lighting circuit for a leg light in a bed or the like, which automatically illuminates the floor around the foot of the bed during a power failure, particularly at night. The purpose is to:

[0004]

In order to solve the above-mentioned problems, according to the present invention, in a lighting circuit of a leg light in a bed or the like for illuminating the foot of a bed or the like, an input side for taking in commercial power and a leg light are provided. Disclosed is a configuration in which a power failure lighting circuit for detecting a power failure and illuminating the underlight is connected in parallel between the output sides irrespective of a normal lighting / extinguishing operation.
Also, the above-mentioned lighting circuit at the time of power failure has a relay for detecting a power failure, and the coil side of this relay is connected to the input side to take in commercial power, while the contact side is connected to the output side to the leg light. Then, a configuration in which a power supply battery is provided in series with a circuit from the contact side of the relay to the leg light can be disclosed.

[0005] According to the first aspect of the present invention, automatic lighting can be performed irrespective of the lighting / extinguishing operation during normal use. If a power outage occurs at night, the lighting fixtures in the room will also be extinguished, and the underlights may be turned on to serve as an emergency light.

According to the second aspect of the present invention, when a power failure occurs, power is not supplied to the coil side of the relay, so that the relay is demagnetized, thereby closing the contact and closing the power failure lighting circuit. Can be lit.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a lighting circuit of a leg light in a bed or the like according to the present invention will be described with reference to the accompanying drawings, with reference to one embodiment. Figure 1
1 shows a lighting circuit 10 for a leg light in a bed or the like according to the present invention. The lighting circuit 10 has a circuit configuration in which a leg light 12 provided on a lower surface (not shown) of a bed or the like is connected to an output side of a rectifier circuit 11 having a well-known configuration. And so on. And such a lighting circuit 1
0, between the primary side of the rectifier circuit 11, which is the input side of the commercial power supply, and the output side of the lighting circuit 10 to the underlight 12, regardless of the operation of the lighting circuit 10, the underlight 12 Are connected in parallel with a power failure lighting circuit 14 for turning on.

Therefore, the power failure lighting circuit 14 will be described. The power failure lighting circuit 14 connects the coil C side of the relay 15 to the primary side of the rectifier circuit 11 in the lighting circuit 10, and connects the contact T side in parallel to the output side of the lighting circuit 10 leading to the leg light 12. A battery 16 as a DC power supply is connected in series in a circuit from the contact T to the leg light 12. The relay 15 is a normally closed type (normally closed type). When energized to the coil C side, the relay 15 is energized to open the contact T, and a power failure occurs to cut off energization to the coil C side. , The contact T is closed, the power failure lighting circuit 14 is closed, and the leg light 12 is turned on. In a normal state, the leg light 12 is turned on / off by an on / off operation of the switch 13 in the lighting circuit 10. Further, as the battery 16 in the power failure lighting circuit 14, a normal single type dry battery can be applied.

In the lighting circuit 10 of the leg light in a bed or the like as described above, the coil C of the relay 15 of the lighting circuit 14 at the time of a power failure connected in parallel to the lighting circuit 10 is normally energized by being energized. The contact T is in an open state, and the power failure lighting circuit 14 is off. Therefore, during normal nighttime, the user can turn on / off the leg light 12 by the on / off operation of the switch 13 in the lighting circuit 10 provided on the headboard or the like.

In the event of a power failure, the energization of the coil C in the relay 15 stops, so that the relay 15 is demagnetized and the contact T is closed.
Is closed and the leg light 12 is turned on using the battery 16 as a power supply. In this way, the leg light 12 can be automatically turned on regardless of the operation of the switch 13 during normal use. In addition, at the time of a power failure at night, the indoor lighting fixtures are also turned off, and the leg lights 12 illuminating the feet also serve as emergency lights.

[0011]

As described above, according to the present invention, assuming the use frequency and the use scene of the leg light for illuminating the feet, the functions that can be used at the time of a power failure are large. This function can be adopted relatively easily even when considering battery drive.

[0012]

[Brief description of the drawings]

FIG. 1 is a lighting circuit diagram of a leg light in a bed or the like according to the present invention.

FIG. 2 is a perspective explanatory view showing a leg light provided on a current bed.

FIG. 3 is a lighting circuit diagram of the leg light shown in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bed 2 Floor 3 Leg light 4 Head board 5 Switch 6 Lighting circuit 7 Rectification circuit 10 Lighting circuit 11 Rectification circuit 12 Leg light 13 Switch 14 Power failure lighting circuit 15 Relay 16 Battery C coil C Contact

Claims (2)

[Claims] In a lighting circuit of a leg light in a bed or the like, which illuminates a foot of the bed or the like, a power failure occurs between an input side for receiving commercial power and an output side leading to the leg light, regardless of a normal lighting / light-off operation. A lighting circuit for a leg light in a bed or the like, wherein a lighting circuit for power failure at the time of detection and lighting of the leg light is connected in parallel. 2. The power failure lighting circuit has a relay for detecting a power failure, and a coil side of the relay is connected to an input side for receiving commercial power, and a contact side is connected to an output side to a leg light. 2. The lighting circuit for a leg light in a bed or the like according to claim 1, wherein a power battery is connected in series with a circuit from the contact side of the relay to the leg light.