Rear fog lamp control circuit and device based on discrete components and automobile

Abstract

The invention discloses a rear fog lamp control circuit and device based on discrete components and an automobile, and relates to the technical field of automobile lamp control, the rear fog lamp control circuit comprises a rear fog lamp switch and a first relay, the rear fog lamp switch is connected with a front fog lamp, a low beam and a high beam, and the first relay is connected with the rear fog lamp switch, a power source and the rear fog lamp; when any one of the front fog lamp, the low beam lamp and the high beam lamp is switched on and the rear fog lamp switch is switched on, the first relay is switched on, and the rear fog lamp is turned on; when the front fog lamp, the dipped headlight and the high beam are all switched off or the rear fog lamp switch is switched off, the first relay is switched off, the rear fog lamp is turned off, the rear fog lamp can be turned off independently of any other lamp through the rear fog lamp switch and the first relay, and the rear fog lamp can be turned on only when any one of the high beam, the dipped headlight and the front fog lamp is switched on. Meanwhile, the rear fog lamp can continuously work until the high beam, the low beam and the front fog lamp are all switched off, a controller does not need to be used, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamp control, and in particular to a rear fog lamp control circuit, a device and a vehicle based on discrete components. Background Art

[0002] The rear fog lamp is a set of red signal lights installed at the rear of the vehicle to improve the visibility of the rear of the vehicle in low visibility environments. The main function of the rear fog lamp is to enhance the recognition of the rear of the vehicle in low visibility conditions such as fog, snow, rain or dust, so that other road traffic participants can more easily find the vehicle, thereby maintaining a safe distance and reducing the occurrence of rear-end collisions and other accidents. The existing technology uses a controller to control the opening and closing of the rear fog lamp, but the existing controller is relatively expensive and the rear fog lamp is difficult to turn off independently of other lamps. Summary of the invention

[0003] The embodiments of the present invention provide a rear fog lamp control circuit, device and automobile based on discrete components to solve the technical problems in the related art that the existing controller for controlling the rear fog lamp is high in cost and makes it difficult to turn off the rear fog lamp independently of other lamps.

[0004] In a first aspect, a rear fog lamp control circuit based on discrete components is provided, comprising:

[0005] A rear fog lamp switch, wherein the rear fog lamp switch is connected to the front fog lamp, the low beam lamp, and the high beam lamp;

[0006] a first relay, wherein the first relay is connected to the rear fog lamp switch, a power supply, and a rear fog lamp;

[0007] When any one of the front fog lamp, the low beam lamp, and the high beam lamp is turned on and the rear fog lamp switch is turned on, the first relay is closed and the rear fog lamp is turned on; when the front fog lamp, the low beam lamp, and the high beam lamp are all turned off or the rear fog lamp switch is turned off, the first relay is turned off and the rear fog lamp is turned off.

[0008] In some embodiments, the rear fog lamp switch is a self-resetting rocker switch having three gear positions, namely, an on gear, a off gear, and a reset gear.

[0009] In some embodiments, the rear fog lamp control circuit based on discrete components further includes:

[0010] A fourth diode, wherein the cathode of the fourth diode is connected to the on position of the rear fog lamp switch, the anode of the fourth diode is connected to the first relay and the rear fog lamp, and the fourth diode is used to maintain power supply to the first relay.

[0011] In some embodiments, the rear fog lamp control circuit based on discrete components further includes:

[0012] a first diode, wherein an anode of the first diode is connected to the front fog lamp, and a cathode of the first diode is connected to an on position of a rear fog lamp switch;

[0013] a second diode, wherein an anode of the second diode is connected to the low beam lamp, and a cathode of the second diode is connected to the on position of the rear fog lamp switch;

[0014] A third diode, wherein the anode of the third diode is connected to the high beam lamp, and the cathode of the third diode is connected to the on position of the rear fog lamp switch.

[0015] In some embodiments, the rear fog lamp control circuit based on discrete components further includes:

[0016] An alarm switch unit, the alarm switch unit is connected to a power source, an ignition switch, and an on position of the rear fog lamp switch, and the alarm switch unit is used to be turned on when the ignition switch is turned off;

[0017] An alarm unit is connected to the alarm switch unit through the on position of the rear fog lamp switch, and the alarm unit is also connected to the door switch, for sending an alarm signal when the alarm switch unit is turned on, the rear fog lamp switch is turned on, and the door switch is turned on.

[0018] In some embodiments, the alarm switch unit includes:

[0019] A second relay, one end of the second relay is connected to the power supply and the ignition switch, and the other end is connected to the on position of the rear fog lamp switch, and the ignition switch controls the second relay to close or open.

[0020] In some embodiments, the alarm switch unit further includes:

[0021] a fifth diode, wherein an anode of the fifth diode is connected to the ignition switch, and a cathode of the fifth diode is connected to the second relay;

[0022] A sixth diode, wherein an anode of the sixth diode is connected to the ignition switch, and a cathode of the sixth diode is connected to the second relay.

[0023] In some embodiments, the alarm unit is a buzzer, one end of the buzzer is connected to the on position of the rear fog lamp switch, and the other end of the buzzer is connected to the door switch.

[0024] In a second aspect, a rear fog lamp control device based on discrete components is provided, comprising the aforementioned rear fog lamp control circuit based on discrete components.

[0025] In a third aspect, a vehicle is provided, comprising the aforementioned rear fog lamp control device based on discrete components.

[0026] The beneficial effects brought about by the technical solution provided by the present invention include:

[0027] The embodiment of the present invention provides a rear fog lamp control circuit, device and automobile based on discrete components. The rear fog lamp control circuit based on discrete components includes a rear fog lamp switch and a first relay. The rear fog lamp switch is connected to a front fog lamp, a low beam lamp and a high beam lamp. The first relay is connected to the rear fog lamp switch, a power supply and a rear fog lamp. When any one of the front fog lamp, the low beam lamp and the high beam lamp is turned on and the rear fog lamp switch is turned on, the first relay is closed and the rear fog lamp is lit. When the front fog lamp, the low beam lamp and the high beam lamp are all turned off or the rear fog lamp switch is turned off, the first relay is turned off and the rear fog lamp is extinguished. The rear fog lamp can be turned off independently of any other lamps through the rear fog lamp switch and the first relay. The rear fog lamp can be turned on only when any one of the high beam lamp, the low beam lamp and the front fog lamp is turned on. At the same time, the rear fog lamp can work continuously until the high beam lamp, the low beam lamp and the front fog lamp are all turned off. No controller is required, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A circuit schematic diagram of a rear fog lamp control circuit based on discrete components provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The embodiments of the present invention provide a rear fog lamp control circuit, device and automobile based on discrete components, which can solve the technical problems in the related art that the existing controller for controlling the rear fog lamp is high in cost and makes it difficult to turn off the rear fog lamp independently of other lamps.

[0032] Figure 1 The invention discloses a rear fog lamp control circuit based on discrete components, comprising: a rear fog lamp switch S1 and a first relay K1, wherein the rear fog lamp switch S1 is connected to a front fog lamp L1, a low beam lamp L2 and a high beam lamp L3, and the first relay K1 is connected to the rear fog lamp switch S1, a power supply and a rear fog lamp L4. When any one of the front fog lamp L1, the low beam lamp L2 and the high beam lamp L3 is turned on and the rear fog lamp switch S1 is turned on, the first relay K1 is closed and the rear fog lamp L4 is turned on; when the front fog lamp L1, the low beam lamp L2 and the high beam lamp L3 are all turned off or the rear fog lamp switch S1 is turned off, the first relay K1 is turned off and the rear fog lamp L4 is turned off.

[0033] The rear fog lamp control circuit based on discrete components of the embodiment of the present invention is provided with a rear fog lamp switch S1 and a first relay K1, wherein the rear fog lamp switch S1 is connected to the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3, and the first relay K1 is connected to the rear fog lamp switch S1, a power supply, and the rear fog lamp. When any of the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 is turned on and the rear fog lamp switch S1 is turned on, the first relay K1 is closed and the rear fog lamp lights up; when the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 are all turned off, the first relay K1 is closed and the rear fog lamp lights up. When the rear fog lamp switch S1 is turned on or the rear fog lamp switch S1 is turned off, the first relay K1 is disconnected, and the rear fog lamp L4 is extinguished. The rear fog lamp L4 can be turned off independently of any other lamps through the rear fog lamp switch S1 and the first relay K1, and the rear fog lamp L4 can only light up when any one of the high beam lamp L3, the low beam lamp L2 and the front fog lamp L1 is turned on. At the same time, the rear fog lamp L4 can work continuously until the high beam lamp L3, the low beam lamp L2 and the front fog lamp L1 are all turned off. There is no need to use a controller, which reduces the cost.

[0034] As an optional embodiment, in one embodiment of the invention, see Figure 1As shown, the rear fog lamp switch S1 is a self-resetting rocker switch, which is provided with three gears, namely, the opening gear ON, the closing gear OFF and the reset gear 0. The opening gear of the rear fog lamp switch S1 is provided with six pins, which are the second pin, the sixth pin, the first pin, the fifth pin, the third pin and the seventh pin from left to right. The front fog lamp L1, the low beam lamp L2 and the high beam lamp L3 are all connected to the fifth pin of the rear fog lamp switch S1, and the first relay K1 is respectively connected to the sixth pin and the first pin of the rear fog lamp switch S1; when the rear fog lamp switch S1 is in the reset gear 0, its second pin is connected to the sixth pin, and the rear fog lamp switch S1 will automatically reset to the reset gear 0 after being pressed; when the rear fog lamp switch S1 is in the opening gear When it is ON, its second pin is connected to the sixth pin, the first pin is connected to the fifth pin, and the third pin is connected to the seventh pin; when any one of the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 is turned on and the rear fog lamp switch S1 is turned on, the power passes through the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3, and then flows through the fifth pin and the first pin of the rear fog lamp switch S1 to the first relay K1, so that the first relay K1 is closed, thereby lighting the rear fog lamp L4; when the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 are all turned off or the rear fog lamp switch S1 is turned off, the rear fog lamp switch S1 is in the off position with no pins connected, and the rear fog lamp L4 is extinguished.

[0035] As an optional embodiment, in one embodiment of the invention, see Figure 1 As shown, the rear fog lamp control circuit based on discrete components also includes: a fourth diode D4, the cathode of the fourth diode D4 is connected to the on position of the rear fog lamp switch S1, the anode of the fourth diode D4 is connected to the first relay K1 and the rear fog lamp L4, the fourth diode D4 is used to maintain the power supply of the first relay K1, the cathode of the fourth diode D4 is connected to the second pin of the on position ON of the rear fog lamp switch S1, when the rear fog lamp switch S1 is in the on position ON, the power passes through any one of the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3, then flows through the fifth pin and the first pin of the rear fog lamp switch S1 to the first relay K1, and the power passes through the fourth diode D4 and then flows through the second pin and the sixth pin of the on position ON of the rear fog lamp switch S1 to continuously supply power to the first relay K1.

[0036] As an optional embodiment, in one embodiment of the invention, see Figure 1As shown, the rear fog lamp control circuit based on discrete components also includes: a first diode D1, a second diode D2 and a third diode D3, the anode of the first diode D1 is connected to the front fog lamp L1, the cathode of the first diode D1 is connected to the on position of the rear fog lamp switch S1, the anode of the second diode D2 is connected to the low beam lamp L2, the cathode of the second diode D2 is connected to the on position of the rear fog lamp switch S1, the anode of the third diode D3 is connected to the high beam lamp L3, and the cathode of the third diode D3 is connected to the on position of the rear fog lamp switch S1, the first diode D1, the second diode D2 and the third diode D3 are all used to prevent current backflow, when the power supply is correctly connected, the current is allowed to pass, and when the power supply is reversely connected, the high impedance characteristic of the diode prevents the current from passing, thereby protecting the front fog lamp L1, the low beam lamp L2 and the high beam lamp L3 from being damaged by reverse current.

[0037] As an optional embodiment, in one embodiment of the invention, see Figure 1 As shown, the rear fog lamp control circuit based on discrete components also includes: an alarm switch unit and an alarm unit, the alarm switch unit is connected to a power supply, an ignition switch S2, and the on gear of the rear fog lamp switch S1, the alarm switch unit is used to be turned on when the ignition switch S2 is turned off, the alarm unit is connected to the alarm switch unit through the on gear of the rear fog lamp switch S1, the alarm unit is also connected to the door switch S3, and is used to send out an alarm signal when the alarm switch unit is turned on, the rear fog lamp switch S1 is turned on, and the door switch S3 is turned on, the ignition switch S2 is provided with four gears, namely, the off gear OFF, the ignition gear ACC, the on gear ON, and the start gear ST, the ignition switch S2 is provided with five pins, which are the first pin S, the second pin ST from left to right. Pin R, the third pin Lg, the fourth pin ACC, and the fifth pin B. When the ignition switch S2 is in the off position OFF, there is no pin connection inside. When the ignition switch S2 is in the ignition position ACC, its fourth pin ACC is connected to the fifth pin B. When the ignition switch S2 is in the on position ON, its third pin Lg, the fourth pin ACC and the fifth pin B are connected. When the ignition switch S2 is in the start position ST, its first pin S, the second pin R, the third pin Lg and the fifth pin B are connected. The alarm switch unit is turned on when the ignition switch S2 is in the off position OFF. The power supply is connected to the alarm unit through the alarm switch unit, the third pin and the seventh pin of the open position of the rear fog lamp switch S1, and an alarm signal is sent out when the door switch S3 is turned on.

[0038] As an optional embodiment, in one embodiment of the invention, see Figure 1As shown, the alarm switch unit includes: a second relay K2, one end of the second relay K2 is connected to the power supply and the ignition switch S2, and the other end is connected to the on position of the rear fog lamp switch S1. The ignition switch S2 controls the second relay K2 to close or open. The second relay K2 is a normally closed relay and will only be activated to connect the circuit after power is turned on, that is, only when the ignition switch S2 is in the off position OFF, the second relay K2 will be activated to connect the circuit. When the ignition switch S2 is in the ignition position ACC, the on position ON, or the start position ST, the second relay K2 will be disconnected, thereby disconnecting the circuit.

[0039] As an optional embodiment, in one embodiment of the invention, see Figure 1 As shown, the alarm switch unit also includes: a fifth diode D5 and a sixth diode D6, the anode of the fifth diode D5 is connected to the ignition switch S2, the cathode of the fifth diode D5 is connected to the second relay K2, the anode of the sixth diode D6 is connected to the ignition switch S2, the cathode of the sixth diode D6 is connected to the second relay K2, the anode of the fifth diode D5 is connected to the third pin Lg of the ignition switch S2 on gear ON and the third pin Lg of the start gear ST, the anode of the sixth diode D6 is connected to the fourth pin ACC of the ignition gear ACC of the ignition switch S2 and the fourth pin ACC of the start gear ST When the ignition switch S2 is in the opening gear ON or the starting gear ST, the power is transmitted to the second relay K2 through the fifth diode D5. When the ignition switch S2 is in the ignition gear ACC or the opening gear ON, the power is transmitted to the second relay K2 through the sixth diode D6. Then, the second relay K2 is disconnected when the ignition switch S2 is in the ignition gear ACC or the opening gear ON or the starting gear ST, and is only turned on when the ignition switch S2 is in the closing gear OFF, and transmits power to the third pin and the seventh pin of the opening gear of the rear fog lamp switch S1, thereby turning on the alarm unit.

[0040] As an optional embodiment, in one embodiment of the invention, see Figure 1As shown, the alarm unit is a buzzer H, one end of the buzzer H is connected to the on position of the rear fog lamp switch S1, and the other end is connected to the door switch S3, the door switch S3 includes a left door switch and a right door switch, and is used to be turned on when the left door or the right door is opened, one end of the buzzer H is connected to the seventh pin of the on position ON of the rear fog lamp switch S1, and the other end of the buzzer H is respectively connected to the left door switch and the right door switch. When the ignition switch S2 is in the off position OFF, the second The relay K2 is closed to connect the circuit, and the power is transmitted to the buzzer H through the second relay K2 and the third pin and the seventh pin of the rear fog lamp switch S1. The buzzer H sounds and sends out an alarm signal when the left door switch or the right door switch is turned on, that is, no matter whether the high beam L3, the low beam L2 or the front fog lamp L1 is turned on or not, when the ignition switch S2 is turned off or the ignition key is taken out, the vehicle door is not closed, and the rear fog lamp switch S1 is in the ON position, an alarm signal is sent to remind the driver.

[0041] An embodiment of the present invention further provides a rear fog lamp control device based on discrete components, comprising the aforementioned rear fog lamp control circuit based on discrete components, wherein the rear fog lamp control circuit based on discrete components comprises a rear fog lamp switch S1 and a first relay K1, wherein the rear fog lamp switch S1 is connected to a front fog lamp L1, a low beam lamp L2, and a high beam lamp L3, wherein the first relay K1 is connected to the rear fog lamp switch S1, a power supply, and a rear fog lamp L4, wherein when any one of the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 is turned on and the rear fog lamp switch S1 is turned on, the first relay K1 is closed and the rear fog lamp L4 is turned on; when the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 are all turned off or the rear fog lamp switch S1 is turned off, the first relay K1 is turned off and the rear fog lamp L4 is turned off.

[0042] The rear fog lamp control device based on discrete components of the embodiment of the present invention has a rear fog lamp control circuit based on discrete components provided with a rear fog lamp switch S1 and a first relay K1, wherein the rear fog lamp switch S1 is connected to the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3, and the first relay K1 is connected to the rear fog lamp switch S1, a power supply, and the rear fog lamp. When any of the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 is turned on and the rear fog lamp switch S1 is turned on, the first relay K1 is closed and the rear fog lamp lights up; when the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 are turned on, the first relay K1 is closed and the rear fog lamp lights up; when the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 are turned on, the first relay K1 is closed and the rear fog lamp lights up. When the high beam lamp L3 is disconnected or the rear fog lamp switch S1 is disconnected, the first relay K1 is disconnected, and the rear fog lamp L4 is extinguished. The rear fog lamp L4 can be turned off independently of any other lamps through the rear fog lamp switch S1 and the first relay K1, and the rear fog lamp L4 can only be turned on when any one of the high beam lamp L3, the low beam lamp L2, and the front fog lamp L1 is turned on. At the same time, the rear fog lamp L4 can work continuously until the high beam lamp L3, the low beam lamp L2, and the front fog lamp L1 are all disconnected. There is no need to use a controller, which reduces costs.

[0043] As an optional embodiment, in one embodiment of the invention, see Figure 1 As shown, the rear fog lamp switch S1 is a self-resetting rocker switch, which is provided with three gears, namely, the opening gear ON, the closing gear OFF and the reset gear 0. The opening gear of the rear fog lamp switch S1 is provided with six pins, which are the second pin, the sixth pin, the first pin, the fifth pin, the third pin and the seventh pin from left to right. The front fog lamp L1, the low beam lamp L2 and the high beam lamp L3 are all connected to the fifth pin of the rear fog lamp switch S1, and the first relay K1 is respectively connected to the sixth pin and the first pin of the rear fog lamp switch S1; when the rear fog lamp switch S1 is in the reset gear 0, its second pin is connected to the sixth pin, and the rear fog lamp switch S1 will automatically reset to the reset gear 0 after being pressed; when the rear fog lamp switch S1 is in the opening gear When it is ON, its second pin is connected to the sixth pin, the first pin is connected to the fifth pin, and the third pin is connected to the seventh pin; when any one of the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 is turned on and the rear fog lamp switch S1 is turned on, the power passes through the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3, and then flows through the fifth pin and the first pin of the rear fog lamp switch S1 to the first relay K1, so that the first relay K1 is closed, thereby lighting the rear fog lamp L4; when the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3 are all turned off or the rear fog lamp switch S1 is turned off, the rear fog lamp switch S1 is in the off position with no pins connected, and the rear fog lamp L4 is extinguished.

[0044] As an optional embodiment, in one embodiment of the invention, see Figure 1 As shown, the rear fog lamp control circuit based on discrete components also includes: a fourth diode D4, the cathode of the fourth diode D4 is connected to the on position of the rear fog lamp switch S1, the anode of the fourth diode D4 is connected to the first relay K1 and the rear fog lamp L4, the fourth diode D4 is used to maintain the power supply of the first relay K1, the cathode of the fourth diode D4 is connected to the second pin of the on position ON of the rear fog lamp switch S1, when the rear fog lamp switch S1 is in the on position ON, the power passes through any one of the front fog lamp L1, the low beam lamp L2, and the high beam lamp L3, then flows through the fifth pin and the first pin of the rear fog lamp switch S1 to the first relay K1, and the power passes through the fourth diode D4 and then flows through the second pin and the sixth pin of the on position ON of the rear fog lamp switch S1 to continuously supply power to the first relay K1.

[0045] As an optional embodiment, in one embodiment of the invention, see Figure 1 As shown, the rear fog lamp control circuit based on discrete components also includes: a first diode D1, a second diode D2 and a third diode D3, the anode of the first diode D1 is connected to the front fog lamp L1, the cathode of the first diode D1 is connected to the on position of the rear fog lamp switch S1, the anode of the second diode D2 is connected to the low beam lamp L2, the cathode of the second diode D2 is connected to the on position of the rear fog lamp switch S1, the anode of the third diode D3 is connected to the high beam lamp L3, and the cathode of the third diode D3 is connected to the on position of the rear fog lamp switch S1, the first diode D1, the second diode D2 and the third diode D3 are all used to prevent current backflow, when the power supply is correctly connected, the current is allowed to pass, and when the power supply is reversely connected, the high impedance characteristic of the diode prevents the current from passing, thereby protecting the front fog lamp L1, the low beam lamp L2 and the high beam lamp L3 from being damaged by reverse current.

[0046] As an optional embodiment, in one embodiment of the invention, see Figure 1As shown, the rear fog lamp control circuit based on discrete components also includes: an alarm switch unit and an alarm unit, the alarm switch unit is connected to a power supply, an ignition switch S2, and the on gear of the rear fog lamp switch S1, the alarm switch unit is used to be turned on when the ignition switch S2 is turned off, the alarm unit is connected to the alarm switch unit through the on gear of the rear fog lamp switch S1, the alarm unit is also connected to the door switch S3, and is used to send out an alarm signal when the alarm switch unit is turned on, the rear fog lamp switch S1 is turned on, and the door switch S3 is turned on, the ignition switch S2 is provided with four gears, namely, the off gear OFF, the ignition gear ACC, the on gear ON, and the start gear ST, the ignition switch S2 is provided with five pins, which are the first pin S, the second pin ST from left to right. Pin R, the third pin Lg, the fourth pin ACC, and the fifth pin B. When the ignition switch S2 is in the off position OFF, there is no pin connection inside. When the ignition switch S2 is in the ignition position ACC, its fourth pin ACC is connected to the fifth pin B. When the ignition switch S2 is in the on position ON, its third pin Lg, the fourth pin ACC and the fifth pin B are connected. When the ignition switch S2 is in the start position ST, its first pin S, the second pin R, the third pin Lg and the fifth pin B are connected. The alarm switch unit is turned on when the ignition switch S2 is in the off position OFF. The power supply is connected to the alarm unit through the alarm switch unit, the third pin and the seventh pin of the open position of the rear fog lamp switch S1, and an alarm signal is sent out when the door switch S3 is turned on.

[0047] As an optional embodiment, in one embodiment of the invention, see Figure 1 As shown, the alarm switch unit includes: a second relay K2, one end of the second relay K2 is connected to the power supply and the ignition switch S2, and the other end is connected to the on position of the rear fog lamp switch S1. The ignition switch S2 controls the second relay K2 to close or open. The second relay K2 is a normally closed relay and will only be activated to connect the circuit after power is turned on, that is, only when the ignition switch S2 is in the off position OFF, the second relay K2 will be activated to connect the circuit. When the ignition switch S2 is in the ignition position ACC, the on position ON, or the start position ST, the second relay K2 will be disconnected, thereby disconnecting the circuit.

[0048] As an optional embodiment, in one embodiment of the invention, see Figure 1As shown, the alarm switch unit also includes: a fifth diode D5 and a sixth diode D6, the anode of the fifth diode D5 is connected to the ignition switch S2, the cathode of the fifth diode D5 is connected to the second relay K2, the anode of the sixth diode D6 is connected to the ignition switch S2, the cathode of the sixth diode D6 is connected to the second relay K2, the anode of the fifth diode D5 is connected to the third pin Lg of the ignition switch S2 on gear ON and the third pin Lg of the start gear ST, the anode of the sixth diode D6 is connected to the fourth pin ACC of the ignition gear ACC of the ignition switch S2 and the fourth pin ACC of the start gear ST When the ignition switch S2 is in the opening gear ON or the starting gear ST, the power is transmitted to the second relay K2 through the fifth diode D5. When the ignition switch S2 is in the ignition gear ACC or the opening gear ON, the power is transmitted to the second relay K2 through the sixth diode D6. Then, the second relay K2 is disconnected when the ignition switch S2 is in the ignition gear ACC or the opening gear ON or the starting gear ST, and is only turned on when the ignition switch S2 is in the closing gear OFF, and transmits power to the third pin and the seventh pin of the opening gear of the rear fog lamp switch S1, thereby turning on the alarm unit.

[0049] As an optional embodiment, in one embodiment of the invention, see Figure 1 As shown, the alarm unit is a buzzer H, one end of the buzzer H is connected to the on position of the rear fog lamp switch S1, and the other end is connected to the door switch S3, the door switch S3 includes a left door switch and a right door switch, and is used to be turned on when the left door or the right door is opened, one end of the buzzer H is connected to the seventh pin of the on position ON of the rear fog lamp switch S1, and the other end of the buzzer H is respectively connected to the left door switch and the right door switch. When the ignition switch S2 is in the off position OFF, the second The relay K2 is closed to connect the circuit, and the power is transmitted to the buzzer H through the second relay K2 and the third pin and the seventh pin of the rear fog lamp switch S1. The buzzer H sounds and sends out an alarm signal when the left door switch or the right door switch is turned on, that is, no matter whether the high beam L3, the low beam L2 or the front fog lamp L1 is turned on or not, when the ignition switch S2 is turned off or the ignition key is taken out, the vehicle door is not closed, and the rear fog lamp switch S1 is in the ON position, an alarm signal is sent to remind the driver.

[0050] An embodiment of the present invention further provides an automobile, comprising the aforementioned rear fog lamp control device based on discrete components.

[0051] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0052] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0053] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A rear fog lamp control circuit based on discrete components, characterized in that: include: A rear fog lamp switch, wherein the rear fog lamp switch is connected to the front fog lamp, the low beam lamp, and the high beam lamp; a first relay, wherein the first relay is connected to the rear fog lamp switch, a power source, and a rear fog lamp; When any one of the front fog lamp, the low beam lamp, and the high beam lamp is turned on and the rear fog lamp switch is turned on, the first relay is closed and the rear fog lamp is turned on; When the front fog lamp, the low beam lamp, and the high beam lamp are all turned off or the rear fog lamp switch is turned off, the first relay is turned off and the rear fog lamp is turned off.

2. The rear fog lamp control circuit based on discrete components according to claim 1, characterized in that: The rear fog lamp switch is a self-resetting rocker switch, which is provided with three gears, namely, an opening gear, a closing gear and a reset gear.

3. The rear fog lamp control circuit based on discrete components according to claim 2, characterized in that: Also includes: A fourth diode, wherein the cathode of the fourth diode is connected to the on position of the rear fog lamp switch, the anode of the fourth diode is connected to the first relay and the rear fog lamp, and the fourth diode is used to maintain power supply to the first relay.

4. The rear fog lamp control circuit based on discrete components according to claim 3, characterized in that: Also includes: a first diode, wherein an anode of the first diode is connected to the front fog lamp, and a cathode of the first diode is connected to an on position of a rear fog lamp switch; a second diode, wherein an anode of the second diode is connected to the low beam lamp, and a cathode of the second diode is connected to the on position of the rear fog lamp switch; A third diode, wherein the anode of the third diode is connected to the high beam lamp, and the cathode of the third diode is connected to the on position of the rear fog lamp switch.

5. The rear fog lamp control circuit based on discrete components according to claim 2, characterized in that: Also includes: An alarm switch unit, the alarm switch unit is connected to a power source, an ignition switch, and an on position of the rear fog lamp switch, and the alarm switch unit is used to be turned on when the ignition switch is turned off; An alarm unit is connected to the alarm switch unit through the on position of the rear fog lamp switch, and the alarm unit is also connected to the door switch, for sending an alarm signal when the alarm switch unit is turned on, the rear fog lamp switch is turned on, and the door switch is turned on.

6. The rear fog lamp control circuit based on discrete components according to claim 5, characterized in that: The alarm switch unit comprises: A second relay, one end of the second relay is connected to the power supply and the ignition switch, and the other end is connected to the on position of the rear fog lamp switch, and the ignition switch controls the second relay to close or open.

7. The rear fog lamp control circuit based on discrete components according to claim 6, characterized in that: The alarm switch unit also includes: a fifth diode, wherein an anode of the fifth diode is connected to the ignition switch, and a cathode of the fifth diode is connected to the second relay; A sixth diode, wherein an anode of the sixth diode is connected to the ignition switch, and a cathode of the sixth diode is connected to the second relay.

8. The rear fog lamp control circuit based on discrete components according to claim 5, characterized in that: The alarm unit is a buzzer, one end of which is connected to the on position of the rear fog lamp switch, and the other end of which is connected to the door switch.

9. A rear fog lamp control device based on discrete components, characterized in that: A rear fog lamp control circuit based on discrete components comprising any one of claims 1-8.

10. An automobile, characterized in that: The invention comprises a rear fog lamp control device based on discrete components as claimed in claim 9.

Images