CN-224218548-U - Light follower

Abstract

The utility model discloses a light follower which comprises a flash lamp HR and a light follower control circuit, wherein the light follower control circuit comprises a voltage dividing circuit, a serial circuit, an integrated chip and an indicator lamp HL, wherein the voltage dividing circuit is composed of a resistor R1 and a variable resistor R2, the serial circuit is composed of two photodiodes D1 and D2 which are reversely connected, the integrated chip is of a model TDA2822M and is used for being arranged on a vehicle instrument panel, the voltage dividing circuit and the serial circuit are connected on the positive electrode and the negative electrode of a power supply in parallel, the 5 feet and the 7 feet of the integrated chip are connected on the middle node of the voltage dividing circuit in a sharing way, the 6 feet and the 8 feet are connected on the middle node of the serial circuit of a light emitting diode in a sharing way, the 1 foot is connected with the negative electrode of the indicator lamp HL through a diode D, the 3 foot is connected with the positive electrode of the indicator lamp HL, the 2 foot is connected with the negative electrode of the power supply, the 4 foot is connected with the negative electrode of the indicator lamp, the flash lamp HR comprises a lamp bead and a lamp shade, the two photodiodes D1 and D2 are arranged in the lamp shade of the flash lamp HR, and the photodiode D1 is close to the lamp bead. The utility model can enable a driver to know the change of the explosion flash lamp according to the change of the indicating lamp at any time.

Inventors

• ZHANG LIBIN

Assignees

• 河北机场管理集团有限公司

Dates

Publication Date

20260508

Application Date

20250513

Claims (3)

1. 1. A light follower is characterized by comprising a burst lamp HR and a light following control circuit; The light following control circuit comprises a voltage dividing circuit formed by a resistor R1 and a variable resistor R2, a serial circuit formed by reversely connecting two photodiodes D1 and D2, an integrated chip with the model of TDA2822M and an indicator lamp HL arranged on a vehicle instrument panel, wherein the voltage dividing circuit and the photodiode serial circuit are connected in parallel on the positive pole and the negative pole of a power supply, the 5 pin and the 7 pin of the integrated chip are commonly connected on a middle node of the voltage dividing circuit, the 6 pin and the 8 pin of the integrated chip are commonly connected on a middle node of the LED serial circuit, the 1 pin of the integrated chip is connected with the negative pole of the indicator lamp HL through the diode D, the 3 pin of the integrated chip is connected with the positive pole of the indicator lamp HL, the 2 pin of the integrated chip is connected with the positive pole of the power supply, and the 4 pin of the integrated chip is connected with the negative pole of the power supply; the explosion flash lamp HR comprises a lamp bead and a lamp shade; the photodiode D1 in the follow light control circuit is arranged in the lampshade of the explosion flash lamp HR, and the photodiode D1 is close to the lamp bead.
2. 2. The follower of claim 1, wherein the cathode of the photodiode D1 is connected to the positive power supply, and the cathode of the photodiode D2 is connected to the negative power supply.
3. 3. The follower of claim 1, wherein the photodiode D2, TDA2822M chip, resistor R1 and variable resistor R2 are disposed within a housing of the burst lamp HR.

Description

Light follower Technical Field The utility model relates to a device changing along with the state of a lamp, in particular to an optical follower. Background The requirements in the regulation of the operation management of the apron are that the vehicle is required to be provided with warning lamps when the vehicle runs in the apron, and the vehicle is lighted day and night. The driver drives in the car, and the warning light is installed at the top outside the car, and in case the warning light breaks down, the driver can not in time discover, and the vehicle does not have the warning light state and goes and possibly leads to influencing the aircraft operation problem and appear. If a driver stretches out of the window to observe the warning lamp because of excessively paying attention to the warning lamp problem, the safety driving is affected, and even the potential risk of traffic safety accidents exists. Disclosure of utility model The utility model aims to provide a light follower so as to solve the problem that a driver cannot see the state of a warning lamp at any time. The technical scheme of the utility model is as follows: an optical follower comprises a burst lamp HR and an optical follower control circuit; The light following control circuit comprises a voltage dividing circuit formed by a resistor R1 and a variable resistor R2, a serial circuit formed by reversely connecting two photodiodes D1 and D2, an integrated chip with the model of TDA2822M and an indicator lamp HL arranged on a vehicle instrument panel, wherein the voltage dividing circuit and the photodiode serial circuit are connected in parallel on the positive electrode and the negative electrode of a power supply, the 5 pin and the 7 pin of the integrated chip are commonly connected on a middle node of the voltage dividing circuit, the 6 pin and the 8 pin of the integrated chip are commonly connected on a middle node of the LED serial circuit, the 1 pin of the integrated chip is connected with the negative electrode of the indicator lamp HL through the diode D, the 3 pin of the integrated chip is connected with the positive electrode of the indicator lamp HL, the 2 pin of the integrated chip is connected with the positive electrode of the power supply, and the 4 pin of the integrated chip is connected with the negative electrode of the power supply; the explosion flash lamp HR comprises a lamp bead and a lamp shade; the photodiode D1 in the follow light control circuit is arranged in the lampshade of the explosion flash lamp HR, and the photodiode D1 is close to the lamp bead. Further, the cathode of the photodiode D1 is connected to the positive electrode of the power supply, and the cathode of the photodiode D2 is connected to the negative electrode of the power supply. Further, the photodiode D2, TDA2822M chip, resistor R1 and variable resistor R2 are disposed in the lamp housing of the burst lamp HR. The resistance value of the photodiode D1 of the follow-up light control circuit is changed according to the brightness of the explosion flash lamp, and the voltages of the 5 pin, the 6 pin, the 7 pin and the 8 pin of the TDA2822M chip are changed, so that the output levels of the 1 pin and the 3 pin are changed along with the change, the follow-up light control circuit is turned on along with the lighting of the explosion flash lamp, and the follow-up light control circuit is turned off along with the extinguishing of the explosion flash lamp. The indicator lamp is placed on the instrument panel of the vehicle, the state of the explosion lamp does not need to be observed by extending the head out of the window, a driver can observe the state of the explosion lamp conveniently through the state of the indicator lamp, and the explosion lamp can be found out in time when the explosion lamp fails and is not on. The design of the light follower is to reflect the state of the warning lamp outside the vehicle into the vehicle, so that the driver can observe conveniently. Plays a role of reminding and warning. The transmission mode is not to collect the electric signal, is not simple circuit series connection but to collect the information of the light source of the warning lamp by adopting the development electronic sensor, and is transmitted into the vehicle through comparison and amplification and is displayed through the indicator lamp. The power source may be taken from an on-board charger outlet, the installation is convenient. The electronic circuit is designed to collect the light source of the warning lamp day and night, is not limited by time and surrounding light sources, and is suitable for a wide range of environmental luminosity. And safety margin is improved in the production and guarantee processes. Drawings Fig. 1 is a circuit diagram of the present utility model. Detailed Description The present utility model will be described in further detail below. As shown in fig. 1, the light follower of the present utility model