JPH04110638U - Brake light brightness control device - Google Patents

Abstract

(57) [Summary] [Purpose] To avoid dazzling other vehicles by lighting a vehicle's auxiliary stop lamp at a brightness that corresponds to the illuminance outside the vehicle. [Configuration] Detection unit 1 that outputs a signal according to the illuminance outside the vehicle
and the oscillation section 2 that outputs the oscillation signal are connected to the output section 3, respectively.
Connect to. The output section 3 outputs a pulse signal having a duty ratio according to the output signal of the detection section 1 to the auxiliary stop lamp 4.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is a system that lights up the vehicle's auxiliary stop lamp at a brightness that corresponds to the illuminance outside the vehicle. The present invention relates to a moving light brightness control device.

0002

[Conventional technology]

Conventionally, as seen in Utility Model Application Publication No. 1-81338, depending on the magnitude of the braking force, Techniques for controlling the lighting of stop lamps are known. In detail, the conventional technique In this technology, the braking force is detected by the operating force of the brake device, and the detected braking force is The luminous intensity, lighting area, or number of stop lamps lit can be changed depending on the magnitude of the force. was.

0003

[Problem that the idea aims to solve]

However, with the above-mentioned conventional technology, the illuminance outside the vehicle is low, for example, at night. However, it has the disadvantage of dazzling other vehicles.

0004

[Means to solve the problem]

This idea turns on the auxiliary stop lamp without dazzling other vehicles. It is intended for this purpose. And in order to achieve that purpose, a detection unit that outputs a signal according to the illuminance outside the vehicle; an oscillation unit that outputs an oscillation signal; A pulse signal connected to the oscillation section and having a duty ratio according to the output signal of the detection section. an output section that outputs an auxiliary stop lamp that is lit by a pulse signal output from the output section; A brake light brightness control device is provided.

[0005]

【Example】 FIG. 1 is an electrical circuit diagram showing a preferred embodiment of this invention. In the figure, reference numeral 1 denotes a detection section that outputs a signal according to the illuminance outside the vehicle. The detection unit 1 is configured by connecting a photoelectric element 11, a capacitor 12, and resistors 13 to 15. are doing. 2 is an oscillation section that outputs an oscillation signal. The oscillator 2 outputs a triangular wave signal. It is connected by comparator 21, capacitor 22, and resistors 23 to 27. It consists of 3 is connected to the oscillating section 2 and has a duty ratio parameter according to the output signal of the detecting section 1. This is an output section that outputs a pulse signal. The output section 3 includes a comparator 31, a power M The connection is made up of OS FET 32, resistors 33 and 34, and comparator 3 1, the reference input section 31a is connected to the oscillation section 2, and the comparison input section 31b is connected to the detection section 1. Subsequently, the output section 31c is connected to the auxiliary stop lamp 4 via the power MOS FET 32. is connected to. 4 is an auxiliary stop lamp that is lit by the pulse signal output from the output section 3; be. The auxiliary stop lamp 4 is attached to a so-called high mount stop located at the rear of the vehicle. A lamp, for example, composed of an array of multiple light emitting diodes. are doing. Even if the auxiliary stop lamp 4 is a lamp using a filament, No problem. 5 is a power supply unit that supplies current from the DC power supply 8 to the oscillation unit 2 and the output unit 3; It is connected by transistors 51 and 52 and resistors 53 to 56. The power supply The section 5 supplies power to the oscillating section 2 and the output section 3 only when the brake switch 6 is activated. This prevents unnecessary power consumption. The brake switch 6, stop lamp 7, and DC power supply 8 have existing configurations.

[0006] Next, the operation of the embodiment configured as described above will be explained. When the brake switch 6 is turned on, the power supply section 5 is connected to transistors 52 and 5. 1 turns on and starts supplying power to the oscillation section 2 and output section 3. This results in The oscillator 2 starts oscillating and outputs a triangular wave signal. On the other hand, the detection section 1 sends a signal of a level corresponding to the illuminance outside the vehicle to the comparison input section 31 of the output section 3. Enter b. For example, when the illuminance outside the vehicle is relatively high (bright), the photoelectric element 11 The resistance value is small, and the signal level output by the detection section 1 is relatively high potential. Besides that Therefore, the duty ratio of the pulse signal output by the output section 3 is large, and the auxiliary stop run P4 lights up brightly. Furthermore, when the illuminance outside the vehicle is relatively low (dark), the resistance value of the photoelectric element 11 is large; The signal level output by the detection unit 1 is relatively low potential. Therefore, the output section 3 The duty ratio of the input pulse signal is small, and the auxiliary stop lamp 4 is dimly lit. Ru.

[0007]

[Effect of the idea]

As mentioned above, this idea is a vehicle auxiliary stop lamp whose brightness corresponds to the illuminance outside the vehicle. Since the auxiliary stop lamp is configured to turn on, the auxiliary stop lamp does not dazzle other vehicles. This has the effect that it can be turned on without any problems.

[Brief explanation of drawings]

FIG. 1 is an electrical circuit diagram showing a preferred embodiment of this invention.

[Explanation of symbols]

1 Detection part 2 Oscillation section 3 Output section 4 Auxiliary stop lamp 5 Power supply section

Claims (1)

[Scope of utility model registration request] 1. A detection section that outputs a signal according to the illuminance outside the vehicle, an oscillation section that outputs an oscillation signal, and a pulse signal connected to the oscillation section and output with a duty ratio according to the output signal of the detection section. What is claimed is: 1. A brake light brightness control device comprising: an output section that outputs a signal from the output section; and an auxiliary stop lamp that lights up in response to a pulse signal output from the output section.