JPH10181442A - Lighting device of room lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change an illuminating color of a room lamp according to one's preference by selecting between a white illuminating lamp and a color illuminating lamp by use of a lighting select switch to be lightable. SOLUTION: With a movable contact 18 of a select switch 17 connected to a fixed contact 20, a movable contact 16 of a lighting select switch 13 is connected to a fixed contact 14 to put a white illuminating lamp 11 in the lighting state. With the movable contact 18 of the select switch 17 connected to the fixed contact 20, the movable contact 16 of the lighting select switch 13 is connected to the fixed contact 15 to put a color illuminating lamp 12 in the lighting state. When in such a condition, a door is opened and a normally closed contact 25 is closed, the white illuminating lamp 11 or the color illuminating lamp 12 is lighted so as to change the illuminating color of the room lamp according to one's preference.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for a room lamp capable of selecting an illumination color of a vehicle interior according to a preference.

[0002]

2. Description of the Related Art A lighting device for a room lamp having a configuration shown in FIG. 2 is conventionally known. In FIG. 2, reference numeral 1 denotes a lamp for white illumination, and reference numeral 2 denotes a switch for switching the lamp 1. One side of the lamp 1 is connected to a DC 12V power supply, and the other side of the lamp 1 is a movable contact 3 of a changeover switch 2.
It is connected to the. The changeover switch 2 has a fixed contact 4 connected to the ground, a fixed contact 6 connected to a fixed contact 8 of the door switch 5, and a dummy contact 7. The door switch 5 has fixed contacts 8, 9 and a normally open contact 10, the fixed contact 8 is connected to the fixed contact 6, the fixed contact 9 is grounded, and the normally open contact 10 is closed when a door (not shown) is opened. , The door is closed and opened.

When the movable contact 3 is connected to the fixed contact 4, a current always flows to the ground through the lamp 1, and the lamp 1 is in a normal lighting state. When the movable contact 3 is connected to the fixed contact 6, the lamp 1 is turned on. When the door is opened, the normally open contact 10 is closed, so that the current flows to the ground via the lamp 1 and the door switch 5. flow,
The lamp 1 lights up. When the door is closed, the normally open contact 10 is opened, so that the lamp 1 is turned off. Further, when the movable contact 3 is connected to the dummy contact 7, no current flows through the lamp 1, so that the lamp 1 is always turned off.

[0004]

However, the conventional room lamp lighting device shown in FIG. 2 has only one illumination lamp and its illumination color is white. The inability to change the indoor lighting color.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lighting device for a room lamp capable of changing the illumination color of the room lamp as desired.

[0006]

In order to solve the above-mentioned problems, a room lamp lighting device according to the present invention is provided with a white illumination lamp, a colored illumination lamp, the white illumination lamp and the colored illumination lamp. It is provided with a lighting selection switch for selecting a lamp to be lit.

According to the present invention, when the lighting selection switch is switched to the white illumination lamp, the white illumination lamp can be turned on. When the lighting selection switch is switched to the colored illumination lamp, the colored illumination lamp is switched. Can be turned on, and therefore, illumination with white light and illumination with colored light can be selected according to preference.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a lighting device for a room lamp according to the present invention. In FIG. 1, reference numeral 11 denotes a white illumination lamp, and 12 denotes a colored illumination lamp. One side of the white illumination lamp 11 is connected to a fixed contact 14 forming a part of the lighting selection switch 13, and one side of the colored illumination lamp 12 is connected to a fixed contact 15 forming a part of the lighting selection switch 13. Have been. The lighting selection switch 13 has a movable contact 16
The movable contact 16 is connected to a DC 12V power supply. The white illumination lamp 11 and the colored illumination lamp 12 are both connected to a movable contact 18 which forms a part of a changeover switch 17.

The changeover switch 17 has a fixed contact 19, a fixed contact 20, and a dummy contact 21. The fixed contact 19 is grounded, and the fixed contact 20 is connected to a fixed contact 23 forming a part of the door switch 22. The fixed contact 24 of the door switch 22 is connected to the ground, and the normally open contact 25 of the door switch 22 is opened when a door (not shown) is closed, and closed when the door is opened.

When the movable contact 18 of the changeover switch 17 is connected to the fixed contact 19 and the movable contact 16 of the lighting selection switch 13 is connected to the fixed contact 14, current always flows only through the white illumination lamp 11, The white illumination lamp 11 is always turned on, and the room is illuminated by the white illumination light. When the movable contact 16 is connected to the fixed contact 15 by operating the lighting selection switch 13, current always flows only to the colored illumination lamp 12, and the room is illuminated by the colored illumination light.

Therefore, when reading at night, at night, the room is illuminated with white illumination light, and when the mood is desired to be displayed at night, the room is illuminated with colored illumination light. You can change the color.

When the movable contact 18 of the changeover switch 17 is connected to the fixed contact 20 and the movable contact 16 of the lighting selection switch 13 is connected to the fixed contact 14, the white illumination lamp 11 can be turned on. In this state, when the door is opened, the normally open contact 25 is closed, and when the door is opened, the white illumination lamp 11 is turned on, and the room is illuminated with white light. When the movable contact 16 of the lighting selection switch 13 is connected to the fixed contact 15 while the movable contact 18 of the changeover switch 17 is connected to the fixed contact 20, the colored illumination lamp 12 is enabled. In this state, when the door is opened, the normally open contact 25 is closed, and when the door is opened, the colored illumination lamp 12 is turned on, and the room is illuminated with the colored light.

When the movable contact 16 of the lighting selection switch 13 is connected to the dummy contact 21, current does not flow through the white illumination lamp 11 and the colored illumination lamp 12, and both lamps are always turned off.

[0015]

As described above, according to the present invention, a white illumination lamp and a colored illumination lamp are provided, and the white illumination lamp and the colored illumination lamp are operably selected by a lighting selection switch. As a result, the illumination color of the room lamp can be changed as desired.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a lighting device for a room lamp according to the present invention.

FIG. 2 is a circuit diagram showing a conventional room lamp lighting device.

[Explanation of symbols]

 10 lamp for white illumination 11 lamp for colored illumination 13 lighting switch

Claims (1)

[Claims] 1. A lighting device for a room lamp, comprising: a white illumination lamp; a colored illumination lamp; and a lighting selection switch for enabling the white illumination lamp and the colored illumination lamp to be lit.