TWI516401B - Intelligent lighting device for vehicles - Google Patents

Description

Vehicle intelligent lighting device

The present invention relates to a smart lighting device for a vehicle, and more particularly relates to a design that can adjust the lighting intensity in response to the ambient brightness of the lighting area, and has the function of saving power.

According to the bicycle movement, it has become the most popular fitness method for the public. In addition to the fitness effect, riding bicycles can also avoid carbon dioxide emissions and endanger the air. Bicycles can be operated regardless of gender, so many people They all use spare time to ride in a more empty place.

However, in those who love to ride bicycles, some people have to rely on work factors, so that the riding time must be extended to the darker nights to ride, and people's eyesight at night is easy due to the sky factor. The visual sense is reduced, and the general rider does not ride in a closed place, but it is easy to use the same road with other steam, locomotives and passers-by. Therefore, riding a bicycle at night is more likely to cause traffic accidents. To this end, in order to provide the surrounding steam, locomotive or passerby to clearly identify the presence of a bicycle rider in front, the rider will wear a reflective or shiny device on the bicycle or on the body to avoid traffic accidents. happened.

For the bicycle light of the Republic of China, please refer to the "Structural Improvement of Bicycle Flash Warning Device" of the Republic of China Patent No. 356790, which is a structural improvement of a bicycle flashing warning device, especially one that automatically starts to generate flash when driving and lack of light, parking or The structure that automatically closes when there is sufficient light. Mainly having an LED flash driving circuit, and having LEDs (light emitting diodes) connected to the output ends thereof, the negative terminals of the LEDs are connected in series to a photoresistor (CDS), and the ground of the photoresistor Then connected to a contact of a spring switch, the spring switch is connected in series with a resistor and grounded; the photosensitive detection and spring switch of the photoresistor are subjected to driving vibration to contact the double start control structure such as conduction to achieve the desired effect By.

However, although the conventional bicycle light can automatically turn on and off the flashing effect in accordance with whether the ambient light is sufficient or not, the photosensitive light is used to sense the ambient light intensity, but in fact, the photoresistor only feels the ambient light brightness. Differences, but not properly limited to the illumination range that senses a given distance, especially for pedestrians, locomotives, cyclists, etc., which are mainly used to illuminate the road at a given distance in front of the lamp body, so that pedestrians and knights can see the road ahead. However, if the conventional design of the photoresistor is used, it is often encountered that the current illumination range and the brightness of the side are inconsistent, the photoresistor cannot be judged for maneuverability, and the conventional bicycle lamp has only two modes of automatic opening and closing of the light. However, it is not possible to reinforce and reduce the brightness of the illumination in response to the ambient brightness of the illuminated area, resulting in the following conditions:

1. The conventional bicycle light can not reinforce the lighting area in time and cause danger of travel.

2. It is also impossible to appropriately reduce the luminous intensity according to the ambient brightness of the light projection area, which causes a problem of wasting the power of the bicycle lamp.

3, and the bicycle light can only be used as a result of the induction of the photoresistor, but does not have the function of adjusting the illumination brightness in response to the ambient brightness of the illumination area. Therefore, the bicycle lamp must be equipped with a higher capacity battery. In order to maintain the endurance of the bicycle light, and for the sake of manufacturing cost, the volume of the high-capacity battery has a considerable size, so the bicycle lamp can not effectively save battery power, and can not properly reduce the size of the battery in design.

The above-mentioned conventional bicycle light cannot be reinforced according to the ambient brightness of the illumination area, the illumination brightness is lowered, and the power and the like cannot be saved. The inventors have identified that it is necessary to improve the illumination intensity according to the ambient brightness of the illumination area. It also has a lamp body structure that saves power.

The main object of the present invention is to provide an intelligent lighting device for a vehicle, which can improve the conventional bicycle light that cannot be reinforced according to the ambient brightness of the illumination area, reduces the illumination brightness, and cannot save power and the like.

In order to achieve the above object and effect, the intelligent lighting device for a vehicle includes a lamp body, a light collecting unit, a light emitting unit and a collecting lens, wherein the front end of the lamp body is provided with a concave curved reflecting cup, and the collecting lens is provided. At the front end of the reflector cup, and the light unit is set in the opposite The light collecting unit is disposed on the inner wall of the rear end of the cup, and the light collecting unit is disposed on the front side of the lamp body, and the light collecting unit defines a light projection point toward the front end of the lamp body, and the light collecting unit is directed toward the light projection point.

The light collecting unit is provided with a micro control unit and a pulse width modulation unit, and the micro control unit has a preset ambient brightness value, and the light collecting unit can sense the ambient light brightness of the light projection point and transmit the sensing information to the a micro control unit, after the micro control unit compares the received sensing information with a preset ambient brightness value, calculates a difference in ambient brightness, and transmits the difference to the pulse width modulation unit by command information, The pulse width modulation unit regulates the brightness of the light-emitting unit corresponding to the difference, thereby increasing or decreasing the brightness of the light corresponding to the ambient brightness at the light projection point.

The light collecting unit further comprises a differential amplifying unit and an analog to digital converting unit, wherein the differential amplifying unit senses the ambient light brightness of the light projection point, and the sensing information is amplified by the signal and transmitted to the analog to digital conversion unit. The number conversion unit converts the sensing information from the analog information into digital information and transmits it to the micro control unit for calculation, and the micro control unit compares the received digital information with the preset ambient brightness value to calculate the ambient brightness. The difference provides more accurate sensing and operation effects.

The light collecting unit of the present invention further includes a buffer unit having a preset buffer value. When the brightness changing time of the light collecting unit sensing the direction of the light projection point is below the buffer value, the buffer unit may pass through the micro control unit. The pulse width modulation unit commands the illumination unit to adjust the illumination brightness, so that when the light projection point of the present invention flashes for the ambient brightness for a short time, the light collection unit commands the illumination unit to adjust the illumination brightness without avoiding the state of flashing of the invention; When the brightness change time in the direction of the ray casting point is above the buffer value, the buffer unit determines that there is a significant, non-transitory brightness change at the ray casting point, so that the buffer unit cooperates with the micro control unit to change the brightness and time of the brightness. The value is an integrated calculation, and the light-emitting unit is commanded by the micro control unit and the pulse width modulation unit to increase or decrease the brightness of the light.

The light collecting unit of the present invention is disposed at the reflecting cup and projects toward the light ray.

The light collecting unit of the present invention is provided with a photosensitive semiconductor element including a differential amplifying unit and a light emitting unit, and is an integrated element having light emission, light reception, and light signal amplification.

The light projection point of the invention is a horizontal distance of 5-30 meters from the lamp body, wherein The horizontal distance of 5-10 meters can correspond to the identifiable distance when riding a bicycle or a locomotive. It can also correspond to the distance that the lamp body of the general battery-powered mode can be illuminated. The horizontal distance is 15-30 meters, which can correspond to driving a car. Distinguishable distance.

The lamp body of the present invention further comprises an adjusting unit connected to the micro control unit, wherein the adjusting unit can manually adjust the lighting effect of the light emitting unit, so that the user can manually adjust the brightness of the light emitting unit according to the preference, and provide more Comfortable lighting effects.

1‧‧‧Light body

11‧‧‧Reflection Cup

2‧‧‧Light collecting unit

21‧‧‧Differential Amplification Unit

22‧‧•Analog-to-digital conversion unit

23‧‧‧Micro Control Unit

24‧‧‧ Pulse Width Modulation Unit

25‧‧‧buffer unit

26‧‧‧Adjustment unit

3‧‧‧Lighting unit

4‧‧‧Concentrating lenses

5‧‧‧Light projection point

The first figure is a schematic diagram of the ray projection pattern of the present invention.

The second figure is a block diagram of the light collecting unit of the present invention.

The third figure is a schematic view of the bicycle used in the present invention.

The fourth figure is a schematic view of the invention used in a car.

The fifth figure is a graph of the curve of the ambient brightness level-time, the driving current value level-time, the brightness level of the light projection area-time of the projection area of the present invention.

The present invention relates to a smart lighting device for a vehicle, as shown in the first and second figures, which is a main embodiment of the present invention, including a lamp body 1, a light collecting unit 2, a light emitting unit 3, and a condensing mirror. a sheet 4, wherein: the front end of the lamp body 1 is provided with a concave arc-shaped reflecting cup 11, the collecting lens 4 is disposed at the front end opening of the reflecting cup 11, and the light emitting unit 3 is disposed on the inner wall of the rear end of the reflecting cup 11, and the collecting unit 2 is disposed in the lamp body 1, and the light-emitting unit 3 is matched with the collecting lens 4 to define a ray projection point 5 at the front end of the lamp body 1, and the concentrating unit 2 is oriented toward the ray-projecting point 5, as shown in the first figure. The lamp body 1 is embodied in the form of a bicycle lamp. The lamp body 1 is recessed in a suitable space to accommodate the reflector cup 11. The concentrating lens 4 is embedded in the front end opening of the reflector cup 11, and the illuminating unit 3 is disposed at the front end. The center of the concave wall of the rear end of the reflector cup 11 is such that part of the light emitted by the light-emitting unit 3 can be directed forward by the collecting lens 4, and other light is reflected by the reflecting cup 11 to the front of the collecting lens 4, and the light-emitting unit 3 is defined to cooperate. The illuminating area of the condensing lens 4 to the front of the lamp body 1 is light Shooting point 5 (the light projection point 5 of the present invention is a horizontal distance of 5-30 meters from the lamp body 1, and the light projection point 5 of the third figure is a horizontal distance of 5-10 meters from the lamp body 1 to correspond to the general Such as riding a bicycle or The visible range of the locomotive, or pedestrian walking, may also correspond to the distance that the lamp body 1 of the general battery-powered mode can illuminate, or as shown in the fourth figure, the ray projection point 5 is a horizontal distance from the lamp body 1 -30 meters, corresponding to the identifiable distance when driving a car), and the light collecting unit 2 is disposed on the top surface of the reflector cup 11, and the light collecting unit 2 faces the light projection point 5, and the light collecting unit 2 is due to the volume It is not too large, so it is not affected by the design volume of the lamp body 1 and does not affect the light projection state of the light-emitting unit 3; the light collecting unit 2 is provided with a micro control unit 23 and a pulse. The wide modulation unit 24 (further includes a differential amplifying unit 21 and an analog to digital converting unit 22), as shown in the second figure, wherein the differential amplifying unit 21 senses the ambient light brightness of the light projection point 5, and the sensing information is The signal is amplified and transmitted to the analog-to-digital conversion unit 22 (the differential amplification unit 21 is a conventional configuration, and the amplification information can be effectively amplified).

The analog-to-digital conversion unit 22 (referred to as an Analog-to-digital converter, generally referred to as A/D, is a device for converting a continuous signal of analog form into a discrete signal of digital form), and converts the sensing information from analog information to digital The information is transmitted to the micro control unit 23 for operation, and the micro control unit 23 (microcontrol unit, commonly referred to as MCU) has a preset ambient luminance value to be received by the micro control unit 23 via the received digits. After comparing the information with the preset ambient brightness values, the difference of the ambient brightness is calculated, and the difference information is transmitted to the pulse width modulation unit 24 (Pulse Width Modulation, abbreviated as PWM, which converts the analog signal). As a technique of pulse wave, the period of the pulse wave is generally fixed after the conversion, but the duty ratio of the pulse wave changes according to the magnitude of the analog signal).

It is to be noted that the light collecting unit 2 is provided with a photosensitive semiconductor element including a differential amplifying unit 21 and a light emitting unit 3, and is an integrated component having light emission, light receiving, and optical signal amplification. The lamp body 1 is further provided with an adjusting unit 26 connected to the micro control unit 23, and the adjusting unit 26 can manually adjust the lighting effect of the lighting unit 3, so that the user can manually adjust the brightness of the light emitting unit 3 according to his preference. Etc., providing a more comfortable lighting effect.

Thereafter, the pulse width modulation unit 24 regulates the brightness of the light-emitting unit 3 corresponding to the difference, thereby increasing or decreasing the brightness of the light corresponding to the ambient light at the light projection point 5, so that the composition and function of the light collecting unit 2 are The differential amplifying unit 21 senses and amplifies the projection of the light The intensity of the light detected by the point 5, and the analog-to-digital conversion unit 22 and the micro control unit 23 transmit and calculate the difference between the ambient brightness of the built-in environment and the ambient light projection point 5, and command the light-emitting unit 3 to illuminate the light via the pulse width modulation unit 24. The projection point 5 illuminates the reinforcement of the corresponding difference or reduces the ambient brightness (the differential amplification unit 21 and the analog-to-digital conversion unit 22 can provide more accurate sensing and operation effects).

The light collecting unit 2 further includes a buffer unit 25 having a preset buffer value. When the light collecting unit 2 senses that the brightness change time in the direction of the light projection point 5 is below the buffer value, When the micro-control unit 23 and the pulse width modulation unit 24 command the illumination unit 3 to adjust the illumination brightness, the light collection unit 2 commands the illumination unit 3 to adjust the illumination when the light projection point 5 of the present invention blinks for a short period of time. The brightness is avoided to cause the state of the present invention to flicker.

When the brightness change time in the direction of the ray projection point 5 is sensed above the buffer value, the buffer unit 25 determines that there is a significant, non-transitory brightness change at the ray projection point 5, so that the buffer unit 25 cooperates with the micro control unit 23 to increase the brightness. The value of changing the time and the brightness is an integrated calculation, and the micro-control unit 23 and the pulse width modulation unit 24 command the light-emitting unit 3 to increase or decrease the light-emitting brightness. Therefore, the present invention has the following features:

1. The present invention is to sense the ambient brightness value of the light projection point 5 by the light collecting unit 2, and calculate the difference between the built-in ambient light brightness value and the aforementioned value by the light collecting unit 2, and command the light emitting unit 3 to reinforce or lower according to the value. The ambient brightness of the light projection point 5 effectively adjusts the projection brightness of the lamp body 1 according to the brightness condition of the light projection point 5, so that the pedestrian or the knight can smoothly recognize the road ahead without manual adjustment, and the adjustment mode and the custom lighting The varistor can only automatically open and close the structure of the specified brightness light.

2. The foregoing invention can be used to adjust the projection brightness characteristic of the lamp body 1 in accordance with the brightness condition of the light projection point 5. Therefore, the power source installed in the lamp body 1 of the present invention can be designed with appropriate capacity and volume. Reducing the volume of the battery to reduce the weight of the lamp body 1 and the design volume of the lamp body 1, and the second can increase the battery life of the battery, and it is not possible to adjust the brightness as in the conventional structure, and the power is actually not required to be supplemented by illumination. The problem.

3. By the addition of the buffer unit 25, when the light projection point 5 flashes a short time, the light-emitting unit 3 does not immediately add or reduce the brightness, thereby avoiding unnecessary flashing of the corresponding light of the present invention. So that users are not bothered by the rapid changes in brightness. Only after the buffer unit 25 can confirm that the ray casting point 5 has a relatively stable and deterministic change, the illuminating unit 3 is required to supplement or reduce the brightness, in accordance with the effect of actually providing stable illumination to the user's ideal line of sight.

4. The illuminance required by vehicles in urban areas and suburbs is bound to be different. Due to street lamps and human activities, the light source is sufficient, and the density of suburban street lamps is low, resulting in a relatively dim environment. Therefore, when using the present invention on a vehicle, The light collecting unit 2 can recognize the front road condition by emitting a lower illumination amount in the urban area according to the sensing result of the light projection point 5, and the suburbs need a higher illumination amount to drive safely.

The fifth figure is a graph of the ambient brightness level-time, the driving current value level-time, the light projection area brightness level-time of the projection area of the present invention, and the projected area ambient brightness level refers to the brightness value given to the projection area by the environment. The driving current value level refers to the driving current value of the electro-mechanical corresponding brightness when the invention is implemented on the electronic machine, and the brightness level of the light projection area refers to the sum of the light projection and the ambient brightness of the projection area, so It can be seen in the fifth figure that when the projection area (corresponding to the light projection point 5 of the present invention) has a low ambient brightness level, the light-emitting unit 3 should be supplemented with a higher projection brightness, and of course the driving current value is also increased, but the light-emitting unit 3 The result of matching the projected brightness with the ambient brightness of the projection area is still to keep the total brightness of the light projection area at a preset constant value.

The above description is only intended to explain the preferred embodiments of the present invention, and is not intended to limit the invention in any way. The changer should still be included in the scope of the intention of the present invention.

In summary, the "intelligent lighting device for vehicles" of the present invention is indeed in full compliance with the development of the industry in terms of practicality and cost-effectiveness, and the disclosed structural invention has an unprecedented innovative structure, so it has " "Newty" should be undoubtedly considered, and the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the requirements of the application requirements of the invention patents in the Patent Law of China, and is a patent application according to law. And please ask the bureau to review it early and give it affirmation.

1‧‧‧Light body

11‧‧‧Reflection Cup

2‧‧‧Light collecting unit

3‧‧‧Lighting unit

4‧‧‧Concentrating lenses

5‧‧‧Light projection point

Claims (7)

The utility model relates to a smart lighting device for a vehicle, which comprises a lamp body, a light collecting unit, a light emitting unit and a collecting lens. The front end of the lamp body is provided with a concave curved reflecting cup, and the collecting lens is arranged at the front end of the reflecting cup. Wherein, the light-emitting unit is disposed on the inner wall of the rear end of the reflector cup, and the light-collecting unit is disposed on the lamp body, and the light-emitting unit defines a light projection point on the front end of the lamp body with the collecting lens, and the light collecting unit faces the light. Projecting point direction; the light collecting unit is provided with a micro control unit and a pulse width modulation unit, and the micro control unit has a preset ambient brightness value, and the light collecting unit can sense the ambient light brightness of the light projection point, and The sensing information is transmitted to the micro control unit, and after the micro control unit compares the received sensing information with the preset ambient brightness value, the difference of the ambient brightness is calculated, and the difference is transmitted to the pulse width by the command information. The modulating unit adjusts the brightness of the corresponding difference by the illuminating unit by the pulse width modulating unit, thereby increasing or decreasing the illuminating brightness according to the ambient brightness at the ray casting point. The illuminating unit further includes a differential amplifying unit and an analog to digital converting unit, wherein the differential amplifying unit senses ambient light brightness of the ray casting point, and The sensing information is amplified by the signal and transmitted to the analog-to-digital conversion unit, and the analog-to-digital conversion unit converts the sensing information from the analog information into digital information and transmits the information to the micro control unit for the micro control unit to receive the digital information and the preset. After comparing the ambient brightness values, the difference in ambient brightness is calculated to provide more accurate sensing and operation effects. The illuminating unit further includes a buffer unit having a preset buffer value, wherein the concentrating unit senses a brightness change time in a direction of a ray casting point, according to the vehicular intelligent lighting device of claim 1 When the buffer value is below, the micro-control unit and the pulse width modulation unit command the illumination unit not to adjust the illumination brightness; and when the brightness change time in the direction of the ray projection point is above the buffer value, the buffer unit cooperates with the micro-control The unit integrates the brightness change time and the brightness value, and commands the light-emitting unit to increase or decrease the light-emitting brightness through the micro control unit and the pulse width modulation unit. According to the intelligent lighting device for a vehicle of claim 1, the light collecting unit is disposed at the reflecting cup. The illuminating unit for a vehicle according to claim 1, wherein the light collecting unit is provided with a photosensitive semiconductor element. According to the intelligent lighting device for a vehicle according to the first aspect of the patent application, the light projection point is a horizontal distance of 5-30 meters from the lamp body. According to the intelligent lighting device for a vehicle of claim 1, the lamp body is further provided with an adjusting unit connected to the micro control unit, and the adjusting unit is capable of manually adjusting the lighting effect of the lighting unit.