JPH0218253B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a lighting device for the interior of an automobile.

Conventional configurations and their problems Conventional lighting systems for illuminating the interior of an automobile include spot lighting that illuminates the driver's seat and passenger seat, and spot lighting that illuminates the entire driver's and passenger's seats. General lighting is used to illuminate the seats, and independent lamps are used for each of these lights. The lamps for spot illumination and the lamps for general illumination are switched using separate switches to provide illumination according to the purpose of use. However, in the case of the above-mentioned lighting system, the spot lighting and general lighting are provided by separate lamps, which makes them expensive, and when used, independent switches must be operated individually depending on the purpose of use. As a result, there was a problem in that the switch operation became extremely complicated.

OBJECT OF THE INVENTION The present invention solves these conventional drawbacks, and aims to provide a lighting device that can be used as a lamp for both spot lighting and general lighting, and that can be easily switched between these lamps. purpose.

Purpose of the Invention In order to achieve the above object, the present invention uses two lamps for spot illumination of the driver's seat and passenger's seat for general illumination, and one of these two lamps is turned on independently. A simple switch device can be used to switch between a state in which the blinking of both lamps is controlled according to the opening and closing of the door switch, and a state in which both lamps do not light even when the door switch is closed. This allows for lighting.

That is, the lighting device of the present invention includes a first fixed contact whose one end is grounded, second and third fixed contacts having a conductive part and an insulating part, a fourth fixed contact, and whose one end is grounded. a fifth fixed contact,
a movable contact that is sequentially connected between the adjacent fixed contacts; a first lamp that is connected to the second and third fixed contacts; and a second lamp that is connected to the fourth fixed contact. The movable contact is in rolling contact between the first and second fixed contacts, and the conductive parts of the first fixed contact and the second fixed contact are connected to the movable contact. The first lamp is turned on by connecting the movable contact between the second and third fixed contacts, and connecting the insulating parts of the second and third fixed contacts to the movable contact. , both the second lamps are turned off, and the movable contact is brought into contact between the third and fourth fixed contacts, and the conductive part of the third fixed contact, the fourth fixed contact, and the movable contact are connected. The first,
The second lamp blinks at the same time, and the movable contact is connected between the fourth and fifth fixed contacts to connect the fourth and fifth fixed contacts and the movable contact. The invention is characterized by a lighting device for the interior of an automobile that is configured so that only one part of the vehicle is lit.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described above with reference to the drawings.

Figure 1 shows how the lighting system is installed in the vehicle interior.A lighting system 2 is installed on the ceiling 1 of the vehicle interior, and two lamps installed in this lighting system 2 illuminate the left front seat and the right front seat. and illuminates the rear seats.

FIG. 2 shows the appearance of the lighting device 2, in which 3 is a case, 4 and 5 are first and second lamps provided in the case 3, 6 are first and second lamps 4, An operation lever for switching and controlling the blinking of 5, 7,
Reference numeral 8 denotes an opening for separately condensing the light from the first and second lamps 4 and 5 using condensing lenses (not shown) to spot illuminate the left front seat and the right front seat;
10 is a transparent plate that transmits light to illuminate the rear seat when either of the first and second lamps 4 and 5 is turned on; 10 is a grounding plate provided in the case 3; 11; 12 attaches the case 3 to the ceiling 1 in a state where it is in contact with the ground plate 10;
This is a screw that essentially grounds the ground.

3 and 4 show the internal structure of the lighting device 2 and its connection state, and 13 is an insulating board made of resin or the like that is attached to the case 3 with screws 14;
15 is a pin made of a conductor fixed to the insulating substrate 13; 16 is a rotary plate that is rotatably mounted around the pin 15 and has a cavity with a tapered opening; 17 is a rotary plate of the rotary plate 16; A movable contact made of a conductor that is movably attached to a tapered part within the cavity.
18 is a conductive coil spring that is housed in the cavity in a compressed state between the pin 15 and the movable contact 17 and always biases the movable contact 17 in the protruding direction; The integrally provided protrusions 19a to 19e wrap around the insulating substrate 1 in such a way as to embrace each protrusion 13a to 13e.
3 is a fixed contact attached, 20 is a power source such as a battery, 21 is a door switch that closes when the door opens and opens when the door closes, and 22 to 26 are lead wires. In addition, the operating lever 6 and the rotating plate 16
The rotating plate 16 also rotates around the pin 15 in response to the rotation of the operating lever 6. Furthermore, semicylindrical protrusions 19a' to 19e' are integrally provided at the tips of the five fixed contacts 19a to 19e, respectively, at positions as shown in FIGS. 3 and 4. Further, the rear ends of the fixed contacts 19a and 19e at both ends are directly soldered to the ground plate 10.
The rear ends of the remaining fixed contacts 19b, 19c, and 19d are projected to the rear of the insulating substrate 13, and the lead wires 22 to
25 as shown in FIG. 4, and the door switch 21 is connected to the pin 15 by a lead wire 26.

In the above configuration, when the operating lever 6 is first operated to bring the movable contact 17 into rolling contact between the fixed contacts 19a and 19b, this movable contact 17 contacts each fixed contact 1.
Since it comes into contact with the protrusions 19a' and 19b' of the lamps 9a and 19b, the positive electrode of the power source 20 and the ground plate 10 are connected, and only the first lamp 4 is lit. At this time, the first lamp 4 continues to be lit regardless of whether the door switch 21 is opened or closed.

Next, move the movable contact 17 to the fixed contacts 19b and 19c.
In this case, when the protrusions 19b' and 19
Since c' does not contact the movable contact 17, the first and second
Both lamps 4 and 5 do not light up, and even if the door is opened and the door switch 21 is closed, the lamps 4 and 5 remain off.

Next, move the movable contact 17 to the fixed contacts 19c and 19d.
When the first and second lamps 4 and 5 are brought into contact between the two, the first and second lamps 4 and 5 are connected between the two poles of the power source 20 via the movable contact 17, the coil spring 18, the pin 15, the lead wire 26, and the door switch 21. For this reason, the first
The blinking of the second lamps 4 and 5 is controlled according to the opening and closing of the door switch 21.

Next, move the movable contact 17 to the fixed contacts 19d and 19e.
When the two lamps are in contact with each other, only the second lamp 5 lights up. At this time, the second lamp continues to be lit regardless of whether the door switch 21 is opened or closed.

Effects of the Invention As described above, the present invention provides two lamps, the first and second lamps for spot lighting that also serve as general illumination, on the ceiling of the vehicle interior, and the second and third lamps that have a conductive part and an insulating part. A switch comprising a fixed contact, a fourth fixed contact, first and fifth fixed contacts whose one ends are grounded, and a movable contact sequentially connected between the adjacent fixed contacts, By connecting the first lamp to the second and third fixed contacts and connecting the second lamp to the third fixed contact, one of the first and second lamps can be connected. A state in which only one lamp is lit, a state in which blinking of both lamps is controlled simultaneously by opening and closing of a door switch connected to one end of the movable contact, and a state in which both lamps are not lighted can be switched. Because of this, the interior of the vehicle can be effectively illuminated depending on the purpose of use, and since there is no need to use complicated interlocking switches, the device itself can be made smaller.

[Brief explanation of drawings]

The drawings all show an embodiment of the present invention, and FIG. 1 is a side view showing the lighting device installed in the vehicle interior, FIG. 2 is a perspective view of the lighting device, and FIG.
The figure is a perspective view of its main parts, and FIG. 4 is its electric circuit diagram. 4, 5...first and second lamps, 17...movable contacts, 19a to 19e...fixed contacts, 20...power supply, 21...door switch.

Claims (1)

[Claims] 1 a first fixed contact whose one end is grounded;
second and third fixed contacts having a conductive part and an insulating part;
a fourth fixed contact, and a fifth fixed contact, one end of which is grounded.
a fixed contact, a movable contact that is sequentially connected between the adjacent fixed contacts, a first lamp that is connected to the second and third fixed contacts, and a first lamp that is connected to the third fixed contact. a second lamp, the movable contact is in rolling contact between the first and second fixed contacts, and the conductive parts of the first fixed contact and the second fixed contact are connected to the movable contact. Possibly the first
The movable contact is brought into contact between the second and third fixed contacts, and the second and third fixed contacts are turned on.
By connecting the insulating part of the fixed contact and the movable contact, both the first and second lamps are turned off, the movable contact is brought into contact between the third and fourth fixed contacts, and the third lamp is turned off. The conductive part of the fixed contact, the fourth fixed contact, and the movable contact are connected, and when a door switch connected to one end of the movable contact is opened and closed, the first and second lamps flash simultaneously, and the fourth fixed contact and the movable contact are connected. An automobile characterized in that only the second lamp is turned on by connecting a contact between the fourth and fifth fixed contacts and connecting the fourth and fifth fixed contacts and the movable contact. Indoor lighting equipment.