JPH04154445A - Auxiliary brake light driving circuit - Google Patents

Abstract

PURPOSE:To prevent to let a succeeding driver feel dazzlement or to waste a battery by lighting an auxiliary brake light at original brightness for a while at braking operation, and reducing light to prescribed brightness or putting out the light after passing away a timer time. CONSTITUTION:This auxiliary brake light drive circuit 1 is closed at braking operation, and constituted out of a timer 2 having a first contact S1 to open after passing away a prescribed time from beginning of braking operation and a second contact S2 to open at braking operation and close after passing away a prescribed time from commencement of the braking operation, and a resistor R connected to the contact S2. When a brake switch BS is closed by braking operation, a brake light BL is lighted and also an auxiliary brake light L is lighted at maximum brightness, and operation of a timer 2 is commenced. Hereafter, when a prescribed time is passed away at continuing braking operation, by completion of operation of the timer 2, the contact S1 is opened and the contact S2 is closed to limit current with the resistor R, and the auxiliary brake light L is reduced in light.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present inventions relate to an auxiliary brake light drive circuit that is provided in combination with a brake light in an automobile.

[Problem M to be solved by conventional techniques and inventions] In recent years,
Due to the frequent occurrence of traffic accidents, we installed high-mounted auxiliary brake lights (hereinafter referred to as "high-mounted lamps"), which are installed in combination with brake lights and in a position that easily attracts the attention of following drivers, to reduce braking. More and more cars are equipped with enhanced lighting, which is proving to be very effective in preventing rear-end collisions.

By the way, if a car with high-mounted lamps continues to brake during traffic congestion or while waiting at a traffic light, the high-mounted lamps may be installed in a position that easily attracts the attention of the driver behind. High Mt.
The lamps may be extremely bright and may cause temporary loss of vision, especially at night.

Furthermore, because the auxiliary brake light is a warning light, its brightness is high and it consumes a large amount of current, so leaving it on will consume a large amount of battery power.

The inventions of the present application address the problems that high-mounted lamps have, namely, that following drivers may feel dazzled if they continue to apply the brakes during traffic congestion or while waiting at a traffic light, where it is not necessary to turn on the auxiliary brake lights. The object of the present invention is to solve the problem that the amount of consumption is also large, and to provide an auxiliary brake light drive circuit that can solve such rlH.

[Means for Solving the Problems] In order to achieve the above object, the present application provides an auxiliary brake light drive circuit connected in parallel to a brake light, the auxiliary brake light drive circuit including a timer, a first contact that is closed when starting the braking operation and opens after a predetermined time has elapsed after starting the braking operation; and a first contact that is open when starting the braking operation and opens after the predetermined time has elapsed after starting the braking operation. a second contact point that closes after the first contact point has elapsed;
The auxiliary brake light drive circuit is characterized in that an auxiliary brake light is directly connected to the contact point of the auxiliary brake light, and an auxiliary brake light is connected to the second contact point of the auxiliary brake light via a dimming means. A first invention, ``An auxiliary brake light drive circuit connected in parallel to a brake light, the auxiliary brake light drive circuit comprising a timer, the timer being closed when starting a braking operation. A second invention characterized in that the auxiliary brake light drive circuit has a contact that opens after a predetermined time has elapsed from the start of the circuit, and an auxiliary brake light is connected to the contact. and "an auxiliary brake light drive circuit connected in parallel to the brake light, the auxiliary brake light drive circuit comprising a timer, the timer being closed when starting a braking operation and a predetermined period of time after starting the braking operation." a first contact that opens after a time leap has elapsed, and a second contact that is open when starting a braking operation and closes after the predetermined time has elapsed after starting the braking operation, and the first contact The auxiliary brake light drive circuit is characterized in that the auxiliary brake light is connected directly to the auxiliary brake light, and the auxiliary brake light is connected to the second contact via a resistor and a switch. A third invention is provided.

[Operation] Since each of the present inventions has the above configuration, when the braking operation is started, the brightness of the auxiliary brake light is high and attracts the attention of the following driver, but if the braking operation is continued for more than a predetermined time, When the driver is in the driver's seat, the brightness of the auxiliary brake light is reduced or turned off, which not only reduces glare for the following driver, but also reduces battery consumption.

[Example] Embodiments of each invention of the present application will be described based on the drawings.

FIG. 1 shows a view of Example port #1 of the first invention of the present application.

In this circuit, a brake light BL is connected to a battery B as a power source via a brake switch BS, and the brake light B
Auxiliary brake light drive surface B that drives the auxiliary brake light in parallel with L
1 is connected.

The second auxiliary brake light drive circuit 1 has a first contact S1 that is closed when starting a braking operation and opens after a predetermined time has elapsed after starting the braking operation, and a first contact S1 that is open when starting the braking operation and is open when the braking operation is started. The timer 2 is comprised of a timer 2 having a second contact S2 that closes after the predetermined time has elapsed from the start, and a resistor R connected to the contact S2.

Next, the operation of this auxiliary brake light driving cycle #i1 will be explained.

211th! ! 1, when the brake switch BS is closed at time T1 by a braking operation, the brake light BL is turned on, the auxiliary brake light is turned on at maximum brightness via the contact S+, and the timer 2 starts operating.

After that, a predetermined period of time elapses while the braking operation is continued, and time T
When the timer reaches 2, the operation of timer 2 ends and contact S1 closes.
Since the contact S2 is closed, the current of the auxiliary brake light is limited by the resistor R, and the light is dimmed.

FIG. 3 shows a circuit diagram of an embodiment of the second invention of the present application.

In this circuit, a brake light BL is connected to a battery B as a power source via a brake switch BS, and the brake light B
An auxiliary brake light drive circuit 3 for driving an auxiliary brake light is connected in parallel with L.

This auxiliary brake light drive circuit 3 is a timer itself, and its contacts are normally closed and open when the timer operates.

Next, the operation of this auxiliary brake light drive circuit 3 will be explained.

In the fourth ryJ, when the brake switch BS is closed at time T by a braking operation, the brake light BL is turned on, the auxiliary brake light is turned on at maximum brightness, and the timer starts operating.

After that, a predetermined period of time elapses while the braking operation is continued, and time T
When the timer reaches 2, the timer operation ends and the contact opens, so the light goes out as shown in the figure.

FIG. 5 shows a circuit diagram of an embodiment of the third invention of the present application.

In this circuit, a brake light BL is connected to a battery B as a power source via a brake switch BS, and a second brake light B
In parallel with L, auxiliary brake light LttI! A working auxiliary brake light drive circuit '#i4 is connected.

This auxiliary brake light drive circuit 4 is closed when a braking operation is started, and the first contact S1 is closed after a predetermined time has elapsed since the braking operation is started, and is open when the braking operation is started. The timer 5 having the second contact S2 that closes after the predetermined time has elapsed from the start of operation, the resistor R connected to the contact S2, and the resistor R can be disconnected from the auxiliary brake light drive circuit 4. selection switch S
It is made up of.

Next, the operation of this auxiliary brake light drive circuit 4 will be explained.
This is done using FIGS. 2 and 4 as diagrams.

In FIGS. 2 and 4, when the brake switch BS is closed at time T1 by a braking operation, the brake light BL is turned on, the auxiliary brake light is turned on at maximum brightness via the contact S+, and the timer 5 is activated. Start.

After that, when a predetermined period of time has elapsed and time T2 comes, the timer 5
The operation is completed, the contact S1 is closed, and the contact S2 is closed.

In that case, if the contact of the selection switch S is open, the current is limited by the resistor R, so the auxiliary brake light is switched to the 21st
! When the light is dimmed as shown in 1 and the contact of the selection switch S is open, the 41st! The light goes out as shown in l.

In the embodiments described above, a resistor is used as the dimming means, but those skilled in the art may use other electronic devices such as a cyrisk or a three-terminal regulator, or make the amount of dimming variable. This is something that comes to mind.

In addition, a wide variety of timers such as mechanical clocks and electronic clocks can be used, and a wide variety of mechanical switches and electronic switches can be used to turn off the light. The use of such means is a $conscious matter.

[Effects of the invention] As is clear from the above, the auxiliary brake light lights at its original brightness for a while after starting the braking operation.
After a predetermined time has elapsed, according to the configuration of the first invention of the present application,
According to the structure of the second invention of the present application, the light is dimmed to a predetermined brightness and turned off, and according to the structure of the third invention of the present application, it is possible to select whether the light is dimmed to a predetermined brightness or turned off. Alternatively, even if the driver continues to apply the brakes while waiting at a traffic light, not only will the following driver not feel dazzled, but the amount of battery consumption can be reduced.

4. A detailed explanation of page 121. Figure 1 is a circuit diagram of an embodiment of the first invention of the present application, Figure 2 is an explanatory diagram of its operation, Figure 3 is a circuit diagram of an embodiment of the second invention of the present application, and
The figure is an explanatory diagram of its operation, No. 51! 1 is a circuit diagram of an embodiment of the third invention of the present application.

In the diagram

Claims (3)

[Claims] (1) An auxiliary brake light drive circuit connected in parallel to the brake light, the auxiliary brake light drive circuit including a timer, the timer being closed when starting a braking operation, and after starting the braking operation. a first contact that opens after a predetermined period of time;
a second contact that is open when starting a braking operation and closes after the predetermined time has elapsed after starting the braking operation, and an auxiliary brake light is directly connected to the first contact; An auxiliary brake light drive circuit characterized in that each of the auxiliary brake lights is connected to the contact points of the auxiliary brake lights via a dimming means. (2) An auxiliary brake light drive circuit connected in parallel to the brake light, the auxiliary brake light drive circuit including a timer, the timer being closed when starting a braking operation, and after starting the braking operation. An auxiliary brake light drive circuit comprising a contact that opens after a predetermined period of time, and an auxiliary brake light connected to the contact. (3) An auxiliary brake light drive circuit connected in parallel to the brake light, the auxiliary brake light drive circuit including a timer, the timer being closed when starting a braking operation, and after starting the braking operation. a first contact that opens after a predetermined period of time;
It has a second contact that is open when starting a braking operation and closes after the predetermined time has elapsed from the start of the braking operation, and the auxiliary brake light is directly connected to the first contact, and the second contact is connected to the second contact. An auxiliary brake light drive circuit characterized in that each of the auxiliary brake lights is connected to the contact points via a dimming means and a switch.