JP2019001221A - Lighting control device for high mount stop lamp - Google Patents

Abstract

To provide effective notification of not only a deceleration degree when a brake is activated in association with a brake pedal pressing operation but also a deceleration degree when an auxiliary brake is activated.SOLUTION: A lighting control device for a high mount stop lamp comprises: a control part that individually controls a lighted state of a plurality of lamp arrays; a vehicle speed sensor that detects a vehicle speed; a brake pedal sensor that detects the amount of pressing a brake pedal; and an auxiliary brake sensor that detects whether or not the auxiliary brake is activated. The control part calculates a deceleration value on the basis of a detection value of the vehicle speed sensor, and individually controls the lighted states of the lamp arrays in accordance with the deceleration value, and sensor values of the brake pedal sensor and the auxiliary brake sensor.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting control device for a high-mount stop lamp, and relates to a lighting control device for a high-mount stop lamp mounted on a vehicle including a brake device.

  Conventionally, in addition to a brake lamp that lights when the amount of depression of the brake pedal exceeds a threshold value, for example, a brake that turns on the second light source when the depression acceleration obtained from the amount of depression of the brake pedal exceeds the threshold value. A lamp is known (see, for example, Patent Document 1).

JP 2006-248294 A

  By the way, the brake lamp disclosed in the prior art document has only a function having a second light source that lights a lighting condition according to the depression acceleration of the brake pedal in addition to a legal brake lamp. For this reason, there is a problem in that it is not possible to appropriately notify the following vehicle until what kind of braking operation the driver is caused by the driver.

  The technology of the present disclosure is a lighting control of a high-mount stop lamp that can effectively notify the degree of deceleration when the auxiliary brake is activated in addition to the degree of deceleration when the brake is activated in accordance with the depression operation of the brake pedal. An object is to provide an apparatus.

  In the technology of the present disclosure, a lighting control unit that individually controls lighting states of a plurality of lamp arrays, a vehicle speed sensor that detects a vehicle speed, a brake pedal sensor that detects a depression amount of a brake pedal, and an auxiliary brake are operated. An auxiliary brake sensor that detects whether or not the lighting control unit calculates a deceleration value based on a detection value of the vehicle speed sensor, and the deceleration value, the brake pedal sensor, and the auxiliary brake sensor The lighting state of the lamp array is individually controlled according to the sensor value.

  Further, when the lighting control unit determines that the deceleration value is a value based on a braking operation of a brake, the lighting control unit sets the lighting state so as to increase or decrease the plurality of lamp arrays according to the magnitude of the deceleration value. It is preferable to control them individually.

  According to the technology of the present disclosure, it is possible to effectively report the degree of deceleration when the auxiliary brake is operated in addition to the degree of deceleration when the brake is operated in accordance with the depression operation of the brake pedal.

It is a circuit diagram of the lighting control apparatus of the high mount stop lamp which concerns on embodiment of this invention. It is a flowchart which shows an example of the lighting control routine by a lighting control part. It is a front view of the high mount stop lamp which shows an example of the lighting state of a some lamp array. It is a front view of the high mount stop lamp which shows the other example of the lighting state of a some lamp array.

  Hereinafter, based on an accompanying drawing, the lighting control device of the high mount stop lamp concerning one embodiment of the present invention is explained. The same parts are denoted by the same reference numerals, and their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  The lighting control device 1 is mounted on, for example, a large vehicle (hereinafter simply referred to as a vehicle) such as a truck or a bus provided with an auxiliary brake device. Specifically, the lighting control device 1 includes a high-mount stop lamp 10 in which a plurality of lamp arrays 10a to 10i are arranged, a lighting control unit 50 that individually controls lighting states of the plurality of lamp arrays 10a to 10i, and lighting control. An electronic control unit (hereinafter referred to as ECU) 20 that outputs a lighting instruction signal to the unit 50 is provided.

  Further, the lighting control device 1 includes a vehicle speed sensor 31 that detects the vehicle speed, a brake pedal sensor 32 that detects the amount of depression of a brake pedal (not shown), and an auxiliary brake sensor 33 that detects the operation of an auxiliary brake device (not shown). And an accelerator opening sensor 34 for detecting the depression amount of an accelerator pedal (not shown).

  As the auxiliary brake device, a known exhaust brake device, retarder device, compression release brake device, or the like can be used. In the following description, the auxiliary brake device includes at least one of the exhaust brake device, the retarder device, and the compression release brake device.

  The high-mount stop lamp 10 is configured by, for example, nine lamp arrays 10a to 10i arranged in a horizontal row. The plurality of lamp arrays 10a to 10i include an LED as a light source and a red transparent lens disposed in front of the LED. Thus, when the LED is lit, the braking state is notified (presented) to the driver of the succeeding vehicle as a red signal lamp which is a stop lamp (brake lamp) through the lens. The high-mount stop lamp 10 is preferably set to have a size of, for example, a length of 40 to 60 cm and a width (height) of 4 to 6 cm as a whole.

  The lighting control unit 50 distributes power to the plurality of lamp arrays 10a to 10i through the transistors 51 and a total of nine transistors 51 provided between the plurality of lamp arrays 10a to 10i and the battery power supply 40, respectively. And a power distribution control unit 52 having a plurality of output terminals for outputting power distribution control signals for control. The transistor 51 functions as a switch element.

  In each of the transistors 51, the collector C is individually connected to the positive electrode of the battery power supply 40 and the emitter E is the ground 41 (or the negative electrode of the battery power supply 40) between the plurality of lamp arrays 10a to 10i and the battery power supply 40. And the base B is individually connected to nine output terminals that output from the power distribution control unit 52.

  The power distribution control unit 52 outputs a lighting control signal to the base B of the transistor 51 in response to the lighting instruction signal 21 input from the ECU 20. The lighting instruction signal may be 4 bits. When the first to ninth lighting instruction signals identified by the 4-bit value are input from the ECU 20 to the power distribution control unit 52, nine lamp arrays are provided according to the first to ninth lighting instruction signals. Lighting control signals 53a to 53i are output so that one or more of 10a to 10i are lit. In the present embodiment, the lighting control is performed by setting the lamp array 10e at the center position among the nine lamp arrays 10a to 10i to the minimum lighting, the right lamp array 10f to 10i, and the left lamp array 10d to 10a. Are performed in 9 steps, starting from the center.

  Specifically, when the first lighting instruction signal is input from the ECU 20, the power distribution control unit 52 outputs the first lighting control signal 53e to the base B of the transistor 51e, as shown in FIG. The lamp array 10e is turned on.

  In addition, when the second lighting instruction signal is input from the ECU 20, the power distribution control unit 52 outputs the second lighting control signals 53e and 53f to the bases B of the transistors 51e and 51f, as shown in FIG. As shown, the lamp arrays 10e and 10f are turned on.

  In addition, when the third lighting instruction signal is input from the ECU 20, the power distribution control unit 52 outputs the third lighting control signals 53e, 53f, and 53d to the bases B of the transistors 51e, 51f, and 51d. As shown in (C), the lamp arrays 10e, 10f, and 10d are turned on.

  When the fourth lighting instruction signal is input from the ECU 20, the power distribution control unit 52 outputs the fourth lighting control signals 53e, 53f, 53d, and 53g to the base B of the transistors 51e, 51f, 51d, and 51g. As shown in FIG. 3D, the lamp arrays 10e, 10f, 10d, and 10g are turned on.

  Further, when the fifth lighting instruction signal is input from the ECU 20, the power distribution control unit 52 receives the fifth lighting control signals 53e, 53f, 53d, 53g, and the base B of the transistors 51e, 51f, 51d, 51g, and 51c. 53c is output, and the lamp arrays 10e, 10f, 10d, 10g, and 10c are turned on as shown in FIG.

  When the sixth lighting instruction signal is input from the ECU 20, the power distribution control unit 52 receives the sixth lighting control signals 53e, 53f, 53d, and the base B of the transistors 51e, 51f, 51d, 51g, 51c, and 51h. 53g, 53c, and 53h are output, and the lamp arrays 10e, 10f, 10d, 10g, 10c, and 10h are turned on as shown in FIG.

  In addition, when the seventh lighting instruction signal is input from the ECU 20, the power distribution control unit 52 receives the seventh lighting control signals 53e, 53f, and 53b on the base B of the transistors 51e, 51f, 51d, 51g, 51c, 51h, and 51b. 53d, 53g, 53c, 53h and 53b are output, and the lamp arrays 10e, 10f, 10d, 10g, 10c, 10h and 10b are turned on as shown in FIG.

  In addition, when the eighth lighting instruction signal is input from the ECU 20, the power distribution control unit 52 receives the eighth lighting control signal 53e and the base B of the transistors 51e, 51f, 51d, 51g, 51c, 51h, 51b, and 51i. 53f, 53d, 53g, 53c, 53h, 53b and 53i are output, and the lamp arrays 10e, 10f, 10d, 10g, 10c, 10h, 10b and 10i are turned on as shown in FIG.

  Furthermore, when the ninth lighting instruction signal is input from the ECU 20, the power distribution control unit 52 receives the ninth lighting control signal from the base B of the transistors 51e, 51f, 51d, 51g, 51c, 51h, 51b, 51i, 51a. 53e, 53f, 53d, 53g, 53c, 53h, 53b, 53i, 53a are output, and as shown in FIG. 3I, the lamp arrays 10e, 10f, 10d, 10g, 10c, 10h, 10b, 10i, 10a Turn on all of the.

  The ECU 20 performs various controls of an engine and a vehicle (not shown), and includes a known CPU, ROM, RAM, input port, output port, and the like.

  Further, the ECU 20 constantly calculates a deceleration value based on the sensor value of the vehicle speed sensor 31, and decelerates the vehicle based on the sensor values of the brake pedal sensor 32, the auxiliary brake sensor 33, the accelerator opening sensor 34, and the like. Is an instruction signal that determines whether or not the lighting operation of the plurality of lamp arrays 10a to 10i is individually controlled according to the determination result. Is output.

  Specifically, when it is determined that the braking operation is performed by the brake operation, the ECU 20 sequentially compares the deceleration value calculated based on the sensor value of the vehicle speed sensor 31 with the first to ninth threshold values. The first to ninth lighting instruction signals described above are output.

  That is, when the vehicle decelerates due to a brake operation by the driver, the ECU 20 outputs a brake corresponding signal for lighting the plurality of lamp arrays 10a to 10i as the lighting instruction signal 21. This brake response signal is for controlling to increase the number of lighting sequentially according to the magnitude of the deceleration value, and corresponds to the above-described first to ninth lighting instruction signals.

  Next, lighting control of the high-mount stop lamp 10 will be described with reference to the flowchart of FIG.

  The program is started by turning on the ignition key switch of the engine, and the sensor value of the vehicle speed sensor 31 is taken in every 0.01 seconds, for example (step S1). Next, a deceleration value is calculated based on the sensor value of the vehicle speed sensor 31 (step S2).

  Next, it is determined whether or not the brake pedal sensor 32 and the auxiliary brake sensor 33 are ON (step S3). If the result is affirmative (Yes), it is determined whether or not the deceleration value is larger than the first threshold value. Determine (step S4). If the determinations in step 3 and step 4 are negative (No), the process returns to step S1, and the above-described steps are repeated by taking in the sensor value of the next vehicle speed sensor 31.

  If the determination in step S4 is affirmative (Yes), it is determined whether or not the deceleration value is greater than the second threshold value (step S5). If the determination is negative (No), the power distribution control unit 52 determines the first value. The first lighting control signal 53e for lighting the lamp array 10e is output (step S6). Thereafter, the process returns to step S1, the signal of the next vehicle speed sensor 31 is taken in, and the above-described steps are repeated.

  If the determination in step S5 is affirmative (Yes), it is next determined whether or not the deceleration value is greater than a third threshold value (step S7). If negative (No), the power distribution control unit 52 is determined. Output the second lighting control signals 53e and 53f for lighting the first and second lamp arrays 10e and 10f (step S8), and then return to step S1 to capture the signal of the next vehicle speed sensor 31 and Repeat the steps.

  If the determination in step S7 is affirmative (Yes), it is next determined whether or not the deceleration value is greater than a fourth threshold value (step S9). If the determination is negative (No), the power distribution control unit 52 is determined. To output the third lighting control signals 53e, 53f, 53d for lighting the first to third lamp arrays 10e, 10f, 10d (step S10), and then return to step S1 to signal the next vehicle speed sensor 31. And repeat the above steps.

  If the determination in step S9 is affirmative (Yes), it is next determined whether or not the deceleration value is greater than a fifth threshold value (step S11). If negative (No), the power distribution control unit 52 is determined. Outputs the fourth lighting control signals 53e, 53f, 53d, 53g for lighting the first to fourth lamp arrays 10e, 10f, 10d, 10g (step S12), and then returns to step S1 for the next vehicle speed sensor. 31 signals are captured and the above steps are repeated.

  If the determination in step S11 is affirmative (Yes), it is next determined whether or not the deceleration value is larger than a sixth threshold (step S13). If the determination is negative (No), the power distribution control unit 52 is determined. To output a fifth lighting control signal 53e, 53f, 53d, 53g, 53c for lighting the first to fifth lamp arrays 10e, 10f, 10d, 10g, 10c (step S14), and then returns to step S1. The signal of the next vehicle speed sensor 31 is taken in and the above-described steps are repeated.

  If the determination in step S13 is affirmative (Yes), it is next determined whether or not the deceleration value is greater than a seventh threshold value (step S15). If negative (No), the first to first values are determined. The sixth lighting display signals 53e, 53f, 53d, 53g, 53c, 53h for lighting the six lamp arrays 10e, 10f, 10d, 10g, 10c, 10h are output (step S16), and then the process returns to step S1. The signal of the next vehicle speed sensor 31 is taken in and the above-described steps are repeated.

  If the determination in step S15 is affirmative (Yes), it is next determined whether or not the deceleration value is greater than an eighth threshold (step S17). If negative (No), the first to first values are determined. The seventh lighting control signals 53e, 53f, 53d, 53g, 53c, 53h, 53b for lighting the seven lamp arrays 10e, 10f, 10d, 10g, 10c, 10h, 10b are output (step S18), and then the step Returning to S1, the signal of the next vehicle speed sensor 31 is taken in, and the above-described steps are repeated.

  If the determination in step S17 is affirmative (Yes), it is next determined whether or not the deceleration value is greater than a ninth threshold value (step S19). If negative (No), the first to first values are determined. The eighth lighting control signals 53e, 53f, 53d, 53g, 53c, 53h, 53b, 53i for lighting the eight lamp arrays 10e, 10f, 10d, 10g, 10c, 10h, 10b, 10i are output (step S20). Then, the process returns to step S1. On the other hand, if the determination in step S19 is affirmative (Yes), the ninth lighting control signal 53e for lighting the first to ninth lamp arrays 10e, 10f, 10d, 10g, 10c, 10h, 10b, 10i, 10a. , 53f, 53d, 53g, 53c, 53h, 53b, 53i, 53a are output (step S21). Thereafter, this control is repeatedly executed until the ignition key switch is turned OFF.

  As described above in detail, according to the present embodiment, when the deceleration value is constantly calculated based on the detection value of the vehicle speed sensor 31 and it is determined that the deceleration value is a value based on the braking operation by the brake operation. The lighting states are individually controlled so that the plurality of lamp arrays 10e, 10f, 10d, 10g, 10c, 10h, 10b, 10i, and 10a are increased or decreased according to the magnitude of the deceleration value. This effectively informs the driver of the following vehicle of the degree of deceleration when the auxiliary brake is activated while accurately informing what kind of braking operation the vehicle is caused by. Is possible.

  In addition, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning of this invention, it can change suitably and can implement.

  For example, in the above-described embodiment, among the nine lamp arrays 10a to 10i, the lamp array 10e at the center position is set to the minimum lighting, and the lighting control is performed in nine steps alternately right and left below. The lamp arrays 10a to 10i may be controlled to be turned on in five stages.

  In this case, for example, the control corresponding to the first, third, fifth, seventh, and ninth stages described above is sequentially performed as the first to fifth stages. That is, the lighting control signals 53a to 53i corresponding to the 4-bit values increase the number of the nine lamp arrays 10a to 10i as the first lighting, one lamp array 10e at the center position, and then the right and left neighbors. Lighting of the three lamp arrays 10e, 10f, and 10d, lighting of the five lamp arrays 10e, 10f, 10d, 10g, and 10c with the right and left neighbors being increased, and then further right and left neighbors 7 lamp arrays 10e, 10f, 10d, 10g, 10c, 10h, 10b are increased. Finally, nine lamp arrays 10e, 10f, 10d, 10g, 10c, 10h are further increased on the right and left sides. , 10b, 10i, and 10a may be turned on in five stages.

  At this time, as shown in FIG. 4, high mount stop lamps 10A to 10E are vertically stacked, and in the first stage among the five stages, as shown in FIG. In the second stage of the stop lamp 10A, as shown in FIG. 4B, the highest and second high-mount stop lamps 10A and 10B, and subsequently the high-mount stop lamps 10A to 10E are sequentially turned on from the top. You may do it.

  Further, even in the same nine stages, among the nine lamp arrays 10a to 10i, the number of lighting is sequentially increased from the rightmost lamp array 10i sequentially to the left or sequentially from the leftmost lamp array 10a to the right adjacent. You may do it.

  The high-mount stop lamp 10 is preferably provided horizontally long on the outer surface of the rear surface of the vehicle so that the driver of the following vehicle (passenger car) can easily see, but depending on the vehicle, You may be provided so that it may become a vertically long pair.

  The high-mount stop lamp 10 is not limited to a configuration in which the nine lamp arrays 10a to 10i are in close contact with each other. For example, a five-ring lamp array is arranged, and an annular lamp array located at the center is arranged. It may be configured to sequentially turn on in accordance with the magnitude of the deceleration value based on the brake operation.

  The vehicle is not limited to a large vehicle such as a truck or a bus, and can be widely applied to other vehicles as long as the vehicle includes a brake device.

DESCRIPTION OF SYMBOLS 1 Lighting control apparatus 10 High mount stop lamp 10a-10i Lamp array 20 ECU
31 Vehicle speed sensor 32 Brake pedal sensor 33 Auxiliary brake sensor 50 Lighting control unit

Claims (2)

A control unit for individually controlling the lighting state of the plurality of lamp arrays;
A vehicle speed sensor for detecting the vehicle speed;
A brake pedal sensor that detects the amount of depression of the brake pedal;
An auxiliary brake sensor for detecting whether or not the auxiliary brake is activated,
The control unit calculates a deceleration value based on the detection value of the vehicle speed sensor, and changes the lighting state of the lamp array according to the deceleration value and the sensor values of the brake pedal sensor and the auxiliary brake sensor. A lighting control device for high-mount stop lamps, which is controlled individually. When it is determined that the deceleration value is a value based on a braking operation of a brake, the control unit individually controls the lighting state so as to increase or decrease the plurality of lamp arrays according to the magnitude of the deceleration value. The lighting control device for a high-mount stop lamp according to claim 1.

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