KR950002940B1 - Device for detecting breaking of automobil lamp cable - Google Patents

Abstract

The circuit detects a lamp disconnection and displays its position with LEDs. The battery power is supplied to the base and collector of a transistor(Q1) when a detection switch(S/SW) is closed. If the lamp is disconnected, the voltage applied on a base resistor(Rb) turns on the transistor so that the corresponding LED is turned on. If the lamp is not disconnected, the positive power flowing through the base resistor is grounded through a lamp filament(L) so that the transistor keeps the turn off state.

Description

Light disconnection detection device of automobile

1 is a schematic diagram for displaying the detection result of the present invention,

2 is a view showing an embodiment of the display unit of FIG.

3 is another exemplary embodiment of FIG.

4 is an exemplary embodiment of the detection circuit of FIG.

5 is another exemplary embodiment of FIG.

6 is another embodiment of FIG.

* Explanation of symbols for main parts of the drawings

S _{1 to} S _n : detection circuit R, Rb, Rc: resistance

S / SW: Detection switch T / SW: Time switch

Q: transistors Dis to Dis ₂ : display unit

D _{1 to} D ₃ : Diodes L to Ln: Equalization

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to detecting disconnection of various lights used in automobiles, and more particularly, to an apparatus for detecting disconnection of automobiles, which comprises a simple circuit configuration and an easy-to-identify display.

In general, automobiles have a large number of lighting, display, and signal lamps (approximately dozens), and as the use time passes, the electrodes of the lamp are oxidized and disconnected or disconnected due to other factors. Such disconnection of the lights may cause collision with other vehicles or driving accidents when driving or stopping. Therefore, all lights should be in an operable state through inspection.

In the related art, in order to detect the disconnection of the equalization as described above, the lighting is turned on and off while the vehicle is stopped.

This requires a person who operates a normal lamp and a person who checks the lighting of the lamp, that is, two people, and it is cumbersome and there are not many drivers who perform such checks before and after driving.

On the other hand, the checking of the equalization is practically impossible in a driving car, and thus, the above-mentioned accident factors may be further expanded in a state where the driver does not recognize the disconnection of the equalization.

In order to solve some of these problems, conventionally, an equalization disconnection detection device has been proposed. However, in consideration of an accident factor, the equalization disconnection detection unit detects whether a high-risk brake equalization is disconnected and brakes can be fixed through an relay so that the display can be fixed through an indicator. In the event of a disconnection of the lights, the relay contacts were reversed, and the indicator lamps were turned on through the reversed contacts to detect and warn the disconnection.

However, according to this conventional technique, even if a disconnection is detected, it is not possible to identify which equalization is disconnected. Therefore, two or more persons have to check again as before and the fault display point is very limited.

Of course, it is possible to detect disconnection for the whole lighting if it is expanded, but it is unreasonable to increase the number of relays.

In addition, in order to detect disconnection, there is a problem that it can be confirmed only when the brake pedal is pressed (brake pedal switch on).

Therefore, the present invention has been made to solve the problems of the prior art as described above, and the disconnection of multiple lights is detected through a simple detection circuit, and in case of disconnection, the position of the equalized light disconnected through the display provided on the instrument panel. The purpose is to provide a device that can identify the.

Hereinafter, with reference to the accompanying drawings the technical configuration of the present invention made to implement the object of the present invention as described above will be described in detail.

As shown in FIG. 1, a plurality of detection circuits S _{1 to} S _n for detecting disconnection of light through a filament electrode are connected to various lights of an automobile as a display unit for displaying the detection result, as shown in FIG. In addition, the detection of the detection circuits S _{1 to} S _n is performed selectively or continuously.

Look in more detail.

2 to 3, the display unit Dis ₁ of the present invention is formed by installing an LED so as to correspond to the position of each light on the diagrammed figure, or imprinting the use of each light on the diagrammed plate. It can also be achieved by the display unit Dis ₂ formed by forming one character.

Meanwhile, the detection circuits S _{1 to} S _n have various implementations, and the preferred embodiments thereof are described below with reference to FIG. 4.

The switch SW for controlling the specific lamp L is a switch formed in an existing vehicle, and the detection switch S / SW is connected to the anode B ⁺ power line of the light circuit 10 that is grounded through the lamp L. Connect the LED forward through it, connect to the collector of the NPN transistor Q through the resistor RC, ground the data, and connect the positive (B ⁺ ) power supply through the resistor Rb to the base, but branch off An equalization disconnection detecting circuit S ₁ of the vehicle is constituted by connecting the check preventing diode D ₁ to the rear end of the switch SW of L).

On the other hand, the detection switch (S / SW) to the detection circuit (S ₁ ) is a detection circuit (S ₂ ) consisting of a type of manual operation manual return or a time switch (T / SW) of the manual operation automatic return. It can be configured as shown in FIG.

Of course, the detection circuit (S ₁ ) (S ₂ ) is a detection operation is performed only by performing a manual operation, in order to perform a constant detection, as shown in FIG. D ₂ ) is connected to the anode (B ⁺ ) line connected to the equalization (L) through the forward check diode (D ₁ ) and the resistance (R) and the diode (D ₅ ) connected in the reverse direction between the ground line detection It can also be configured as a circuit S ₃ .

The unexplained Bat shows a battery which is an automobile power source. In each embodiment, the same components are denoted by the same reference numerals, and S ₁ , S ₂ , and S ₃ are represented when a detection circuit is formed on a plurality of lights formed in the vehicle. Alternatively, a large number may be formed.

Looking in more detail the effects of the present invention constituting the configuration as described above are as follows. Herein, the embodiment illustrated in FIGS. 2 and 4 will be described.

The flashing is interrupted by the specific switch SW that operates the light among the various lights of the automobile.

Accordingly, when the detection switch S / SW of the present invention is closed, the battery Bat power is supplied to the base and the collector side of the transistor Q.

In this case, the equalizer (L ₁₎ that is turned off when the steady-state non-disconnected state, the positive electrode through a base resistance (Rb) (B ⁺⁾ power source because the ground through the filament of the equalizer (L) a transistor (Q) state Keeps to indicate that the LED is off, indicating that it is normal.

On the contrary, when the equalization L is disconnected, the potential of the base resistor Rb is biased to the base of the transistor Q ₁ to be turned on, so that the corresponding LED installed at the schematic position of the display unit Dis ₁ lights up and fails. The point of equalization is displayed.

Therefore, according to the present invention, one driver can easily check various equalizations by operating the detection switch S / SW to detect failure of the equalization.

Of course, it is preferable that the detection switch S / SW be configured to be used integrally in all the equalizations, and the detection circuit can be applied to the integrated circuit without necessarily configuring the transistors for individual equalization.

On the other hand, in the case of another embodiment shown in FIG. 5, when the detection switch is set as the off-time switch, the switch state is opened and a reverse operation may not be performed after a predetermined time period after the operation. When the power is applied, the detection circuit continuously detects the equalization. At this time, when the equalization L is in a normal state, a reverse voltage that may occur when the switch SW of the equalization is switched from an on state to an off state is a resistance By preventing the reverse flow by the circuit of (R) and diode (D ₅ ), the reverse voltage is cut off by diodes (D ₁ , D ₃ ) to protect the circuit.

As described above, the present invention can be easily expanded even when the number of disconnection detection targets is large. On the other hand, the configuration is very simple, and whether the equalization is disconnected in a situation required by one driver (stopping or driving). This result is very effective in that it is possible to prevent accidents by checking the disconnection part of the lights by replacing the fault lights by displaying the fault points with LEDs on the display panel drawn on the central instrument panel. It is a useful invention.

Claims (3)

An apparatus for detecting a break in a variety of automotive lighting, being made as a multiple of the detection circuit display (Dis) indicating the detection result and (S ₁ ~S _n) for detecting the disconnection of the lights through the filament electrode of the equalizing detected The circuit S ₁ forward-connects the LED to the anode B ⁺ power supply line of the equalizing circuit 10 through the detection switch S / SW and through the resistor Rc the collector of the NPN transistor Q ₁ . The emitter is grounded, and the base is connected to the positive (B ⁺ ) power supply through the resistor (Rb), but branched to connect the check-stop diode (D ₁ ) behind the switch (SW) of the equalization (L). And the display unit comprises a display unit (Dis ₁ ) provided with the LEDs so as to correspond to the position of each light on the diagrammed figure. The display unit (Dis ₂ ) according to claim 1, wherein the detection switch (S ₂ ) configured as the time switch (T / SW) and the characterizing the use of each equalization are formed on the illustrated plate. Equalization disconnection detection device of a vehicle, characterized in that consisting of. The anode (B ⁺ ) according to claim 1 or 2, wherein the diode (D ₂ ) is forward-connected to the base of the transistor (Q) and connected to the equalization (L) through the check diode (D ₁ ). An equalization disconnection detection device for a vehicle, comprising a detection circuit (S3) connected by connecting a resistor (R) and a reverse direction connected diode (D ₃ ) to a ground line.