JPH09286276A - Electronic flasher device - Google Patents

Abstract

(57) Abstract: An electronic flasher device in which a semiconductor switch element blinks a direction indicator lamp does not require a dedicated component for generating an operating sound. SOLUTION: A current detecting resistor 64 also serving as a sounding body is connected to a semiconductor switch element 61B which blinks direction indicating lamps 1R and 1L. The current detection resistor 64 has a bimetal structure. Semiconductor switch element 61B and blinking circuit 61A
To form a module body 61. The current detection resistor 64 is welded to the terminals 61D and 61E of the module body 61. A protrusion 61C is formed on the module body 21 to collide with the current detection resistor 64 and generate a tapping sound.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for improving an electronic flasher device in which a semiconductor switch element is intermittently operated in response to an operation of a turn signal switch and a hazard switch, and a direction indicator lamp blinks a turn signal and a hazard.

[0002]

2. Description of the Related Art A conventional electronic flasher device of this type is
JP-A-64-90831 and JP-A-2-1646
There was a technique shown in Japanese Patent No. 29. In this prior art,
A semiconductor switch element connected to the lamp, a blinking circuit for deriving an intermittent signal to the semiconductor switch element, and a switch connected to the blinking circuit, the semiconductor switch element is intermittently operated according to the operation of the switch, The lamp was designed to blink.

[0003]

In a mechanical flasher device using an old type relay or a ben spring, the operating noise of the switch was naturally generated, so that it was easy to confirm the blinking operation. However, in the electronic flasher device as shown in the above-mentioned prior art, the operation noise is not generated from the semiconductor switch element itself. Therefore, as shown in, for example, Japanese Patent Application Laid-Open No. 55-87630, the flasher device is in the operating state. It was necessary to utilize the speaker of the car stereo to generate the linked operation sound, or to install a buzzer dedicated to the electronic flasher device.

The present invention has been made to solve the above-mentioned problems, and an electronic flasher device in which a semiconductor switch element blinks a direction indicator lamp does not require a dedicated component for generating an operating sound. This is the purpose.

[0005]

In order to solve the above-mentioned problems, first, the invention according to claim 1 is directed to a semiconductor switch element connected to a turn signal lamp of a vehicle, and blinking for deriving an intermittent signal to the semiconductor switch element. A circuit and a turn signal switch and a hazard switch connected to the blinking circuit, and intermittently actuating the semiconductor switch element according to the operation of the turn signal switch and the hazard switch,
There is provided an electronic flasher device in which a turn signal blinks and a hazard blinks in the direction indicator lamp, in which a current detection resistor that also functions as a sounding body is connected to the semiconductor switch element.

Further, the invention according to claim 2 provides an electronic flasher device in which the current detecting resistor, which also functions as the sounding body, has a bimetal structure.

According to a third aspect of the present invention, the current detection resistor is fixed to the terminal of the module body in which the semiconductor switch element and the blinking circuit are integrated, and the current detection resistor collides with each other to generate a tapping sound. There is provided an electronic flasher device having protrusions formed on the module body.

[0008]

1 is a block diagram of a first embodiment of the present invention.
It will be described based on. First, 1R and 1L are existing direction indicator lamps provided on the left and right of the vehicle body, and are electrically connected to a combination switch body 2 provided on a steering column in the vehicle through a harness. The combination switch body 2 is a switch in which various operation switches such as a lighting operation switch, a wiper operation switch, and a turn signal operation switch are assembled, and a blinking circuit 21A, semiconductor switch elements 21R and 21L, a turn signal switch 22. , A hazard switch 23, a current detection resistor 24, and a sounding body 25.

The blinking circuit 21A is a circuit for controlling the semiconductor switch elements 21R, 21L and the sounding body 25 according to the states of signals input from the turn signal switch 22, the hazard switches 23, 3 and the current detecting resistor 24.

More specifically, the blinking circuit 21A receives the ON operation signal from the right contact 22R of the turn signal switch 22 to input the right semiconductor switch element 21R.
A function to output an intermittent signal to the right direction indicator lamp 1R to blink the turn signal, and to output an intermittent signal to the sounding body 25 to generate a turn signal operation sound, and an ON operation from the left contact 22L of the turn signal switch 22. By inputting a signal, the left semiconductor switch element 2
It has a function of outputting an intermittent signal to 1L to make the left direction indicator lamp 1L blink a turn signal and to output an intermittent signal to the sounding body 25 to generate a turn signal operation sound.

Further, the blinking circuit 21A is alternately switched between the hazard blinking mode and the OFF mode each time an ON operation signal is inputted from any one of the hazard switches 23 and 3, and in the hazard blinking mode, the semiconductor switch element 21R is switched. , 21L outputs an intermittent signal to both the left and right direction indicator lamps 1R and 1L to blink at the same time (hazard blinking), and does not output in the OFF mode.
It has a function of turning off R and 1L. The blinking circuit 2
1A does not output a signal to the sounding body 25 in any of the hazard blinking mode and the OFF mode, and the sounding body 25 does not generate an operating sound.

Further, the blinking circuit 21A is a current detection circuit 2
4 detects the voltage drop at both ends and when the level of the voltage drop becomes below a predetermined level, the direction indicator lamp 1
It is judged that R and 1L are disconnected, and the semiconductor switch element 21
It has a function of notifying the disconnection by changing the cycle of the intermittent signal output to R and 21L.

Next, the semiconductor switch elements 21R and 21L
Uses a MOS FET, and the blinking circuit 21A
And the module body 21 are configured integrally.

The turn signal switch 22 is a switch which is turned on / off when a lever (not shown) provided on the combination switch body 2 is tilted, and is constituted by a right contact 22R and a left contact 22L. The hazard switch 23 is a switch composed of an automatic return switch, and is provided on the tip of the lever, the upper side of the combination switch body 2, or the like. Further, the current detection resistor 24 is connected to the direction indicating lamps 1R,
It is composed of a low resistance element for obtaining a voltage drop of about 100 [mV] proportional to the current flowing in L.

A hazard switch 3, an ignition switch 4 and a DC power source 5 are connected to the combination switch body 2. The hazard switch 3 is a hazard switch 23 included in the combination switch body 2.
Are connected in parallel with each other, and are mounted in a range that can be operated by an occupant other than the driver's seat, for example, in the vicinity of the center console.

Next, the operation of the above-described first embodiment will be described. When the ignition switch 4 is in the ON operation state, the blinking circuit 21A receives the ON operation signal from the right contact 22R of the turn signal switch 22, for example,
An intermittent signal is output to the right semiconductor switch element 21R to blink the right direction indicator lamp 1R by a turn signal, and an intermittent signal is output to the sounding body 25 to generate a turn signal operation sound. Similarly, when an ON operation signal is input from the left contact 22L of the turn signal switch 22, an intermittent signal is output to the left semiconductor switch element 21L, the left direction indicator lamp 1L blinks the turn signal, and the sounding body 25 is generated.
An intermittent signal is output to generate a turn signal operation sound.

Next, when any one of the hazard switches 23 and 3 is turned on, the blinking circuit 21A enters the hazard blinking mode, outputs an intermittent signal to both the semiconductor switch elements 21R and 21L, and outputs the left and right direction indicator lamps 1R ,. 1L flashes hazard. At this time, since no signal is output to the sounding body 25, the sounding body 25 is in the mute state. Then, when one of the hazard switches 23 and 3 is turned on again, the blinking circuit 21A is switched to the OFF mode, and both the lamps 1R and 1L are turned off.

The blinking circuit 21A includes a direction indicator lamp 1R,
When the voltage drop across the current detection resistor 24 is detected at the lighting timing when 1L is blinking the turn signal or the hazard is blinking, and it is determined that the direction indicator lamps 1R and 1L are broken when the level becomes lower than a predetermined level. Then, control is performed to change the cycle of the intermittent signal output to the semiconductor switch elements 21R and 21L.

A second embodiment of the present invention will be described with reference to FIG. The same components as those shown in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. First, like the combination switch body 2 of the first embodiment, the combination switch body 6 is a switch in which various operation switches such as a lighting operation switch, a wiper operation switch, and a turn signal operation switch are assembled, and blinks. It has a circuit 61A, a semiconductor switch element 61B, a turn signal switch 62, a hazard switch 63, and a current detection resistor 64 also serving as a sounding body.

The blinking circuit 61A includes a turn signal switch 62, a hazard switch 63 and a current detection resistor 6.
4 is a circuit for controlling the semiconductor switch element 61B in accordance with the state of the signal input from the circuit 4.

More specifically, the blinking circuit 61A includes a right contact 62R or a left contact 62 of the turn signal switch 62.
It has a function of outputting an intermittent signal to the semiconductor switch element 61B by inputting an ON operation signal from L.

The blinking circuit 61A switches to a hazard blinking mode when an ON operation signal is input from the hazard switch 63 and switches to an OFF mode when an OFF operation signal is input, and outputs an intermittent signal to the semiconductor switch element 61B in the hazard blinking mode. The left and right direction indicating lamps 1R and 1L simultaneously blink with hazard, and both lamps 1R and 1L are turned off without outputting in the OFF mode.

The blinking circuit 61A includes a current detection resistor 6
4 detects the voltage drop at both ends and when the level of the voltage drop becomes below a predetermined level, the direction indicator lamp 1
It is judged that R and 1L are intermittent, and the semiconductor switch element 61
It has a function of notifying disconnection by changing the period of the intermittent signal output to B.

Next, the semiconductor switch element 61B is a MOS
An FET is used, and the module body 61 is configured by being integrated with the blinking circuit 61A. The module body 6
1, the protrusion 61C is integrally formed as shown in FIG. 3, and the terminals 61D and 61E electrically connected to the semiconductor switch element 61B and the blinking circuit 61A are protruded inside. A current detection resistor 64, which will be described later, is welded to the terminals 61D and 61E.

The turn signal switch 62 is a switch which is turned on / off when a lever (not shown) provided on the combination switch body 6 is tilted, and is constituted by a right contact 62R and a left contact 62L. The hazard switch 63 is a switch provided on an instrument panel or the like made of, for example, a tumbler switch or the like, and includes a right contact 63R, a left contact 63L, a movable contact 63A, a normally closed contact 63B, and a normally open contact 63C. .

The current detecting resistor 64 is composed of a low resistance element for obtaining a voltage drop of about 100 [mV] proportional to the current flowing through the direction indicating lamps 1R, 1L. In particular, the current detection resistor 64 has a bimetal structure in which two metal plates having different thermal expansion coefficients are joined.
The surface having the larger coefficient of thermal expansion is directed to the side having the projection 61C, and as shown in FIG. 3A, the surface is curved away from the projection 61C and welded to the terminals 61D and 61E of the module body 61. . Therefore, when the current detecting resistor 64 generates heat due to the current flowing through the direction indicating lamps 1R and 1L, it reverses and collides with the protrusion 61C as shown in FIG. 3B.

Next, the operation of the above-described second embodiment will be described. The ignition switch 4 is in the ON operation state,
Further, when the hazard switch 63 is in the OFF state, the blinking circuit 61A outputs an intermittent signal to the semiconductor switch element 61B when an ON operation signal of the right contact 62R or the left contact 62L is input from the turn signal switch 62, for example. As a result, when the right contact 62R is turned ON, the right direction indicator lamp 1R blinks the turn signal, and when the left contact 62L is turned ON, the left direction indicator lamp 1L is turned on.
Blinks the turn signal. At this time, the current detection resistor 6
4 is a right direction indicator lamp 1R or a left direction indicator lamp 1
The current of L generates heat and is deformed by the bimetal structure, so that the current detection resistor 64 collides with the protrusion 61C of the module body 61 at the lighting timing and generates a tapping sound.

Next, when the hazard switch 63 is turned on, the right and left contacts 63R and 63L are turned on, and the movable contact 63A is connected to the normally open contact 63C. As a result, the blinking circuit 61A enters the hazard blinking mode,
An intermittent signal is output to the semiconductor switch element 61B to cause the left and right direction indicating lamps 1R and 1L to blink with hazard. When the hazard switch 63 is turned off, the blinking circuit 6
1A switches to OFF mode, both lamps 1R, 1L
Turn off the light.

The blinking circuit 61A includes a direction indicator lamp 1R,
When the voltage drop across the current detection resistor 64, which also serves as a sounding body, is detected at the lighting timing when 1L is blinking the turn signal or the hazard is blinking, and when the level is below a predetermined level, the direction indicator lamps 1R, 1L Is determined to be intermittent, and control is performed to change the cycle of the intermittent signal output to the semiconductor switch element 61B.

[0030]

As described above, the present invention provides a semiconductor switch element connected to a vehicle direction indicator lamp, a flashing circuit for deriving an intermittent signal to the semiconductor switch element, and a turn signal switch connected to the flashing circuit. And an hazard switch, in the electronic flasher device for intermittently operating the semiconductor switch element according to the operation of the turn signal switch and the hazard switch, and blinking the turn signal lamp for turn signals and hazards, in the semiconductor switch element. Since the current detection resistor, which also serves as the sounding body, is connected, there is an effect that a dedicated component for generating an operating sound is not required. Further, by forming the current detecting resistor, which also functions as the sounding body, into a bimetal structure, it is possible to generate a large amount of thermal deformation by self-heating each time the lamp current flows through the current detecting resistor, and easily generate a tapping sound. There is an effect that can be. Furthermore, since the current detection resistor is fixed to the terminal of the module body in which the semiconductor switch element and the blinking circuit are integrated, a projection is formed on the module body that collides with the current detection resistor and generates a tapping sound. Not only can the current detection resistor be easily supported, but the projections against which the current detection resistor collides can be easily formed when the module body is molded, and the module body itself produces a tapping sound. There is an effect to contribute.

[Brief description of drawings]

FIG. 1 is an electrical circuit diagram showing a first embodiment of the present invention.

FIG. 2 is an electric circuit diagram showing a second embodiment of the present invention.

FIG. 3 is an external perspective view of the module body shown in FIG.
(A) shows a state where the current detection resistor is not generating heat,
(B) shows a state in which the current detection resistor generates heat and is deformed to collide with the protrusion of the module body.

[Explanation of symbols]

 1R, 1L Direction indicator lamp 2,6 Combination switch body 21,61 Module body 22,62 Turn signal switch 23,3,63 Hazard switch 24,64 Current detection resistor 25 Sounding body 4 Ignition switch

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B60Q 5/00 650 B60Q 5/00 650A 650Z

Claims (3)

[Claims] 1. A semiconductor switch element (61B) connected to a vehicle direction indicator lamp (1R, 1L), a blinking circuit (61A) for deriving an intermittent signal to the semiconductor switch element (61B), and the blinking circuit (61A). 61A) turn signal switch (62) and hazard switch (6)
3), the semiconductor switch element (61B) is intermittently operated according to the operation of the turn signal switch (62) and the hazard switch (63), and the direction indicator lamps (1R, 1L) are turned on and off. An electronic flasher device in which a hazard blinks, wherein the semiconductor switch element (61B) is connected to a current detection resistor (64) which also functions as a sounding body. 2. The electronic flasher device according to claim 1, wherein the current detection resistor (64) also serving as the sounding body has a bimetal structure. 3. The invention according to claim 1 or 2, wherein the semiconductor switch element (61B) and the blinking circuit (61).
The current detection resistor (64) is fixed to the terminals (61D, 61E) of the module body (61) in which A) is integrated, and the current detection resistor (64) collides with the projection (61C) to generate a tapping sound. ) Is the module body (61)
Electronic flasher device formed on the.