WO2005005194A1

WO2005005194A1 - Daytime lighting unit for vehicle

Info

Publication number: WO2005005194A1
Application number: PCT/JP2003/008957
Authority: WO
Inventors: Masaru Matsubara; Masanori Matsubara
Original assignee: Mic Works, Ltd.
Priority date: 2003-07-15
Filing date: 2003-07-15
Publication date: 2005-01-20

Abstract

A daytime lighting unit for preventing failure to turn on or turn off light in daytime and enhancing visibility of daytime lighting in a four wheel vehicle. The daytime lighting unit (100) for vehicle comprises a daytime traveling light (110) fixed to a vehicle (10) and emphasizing the existence thereof by lighting, and a circuit (120) for turning on/off the daytime traveling light (110) depending on ON/OFF of a key switch (16) in the vehicle (10) running/stoppage of the engine in the vehicle (10). A light emitting diode (112) is preferably employed as the light source of the daytime traveling light (110).

Description

Description Daytime lighting system for vehicles Technical field

The present invention relates to a daytime lighting device for a vehicle that emphasizes the presence of a vehicle by daylighting, and more particularly to a daytime lighting device for a vehicle attached to a four-wheeled vehicle (automobile). Background art

To prevent the occurrence of accidents when driving a vehicle, it is necessary to not only accurately recognize the presence of other people (other vehicles and pedestrians) but also to recognize the presence of the vehicle that you are driving. It is important to let them.

During nighttime driving, the presence of vehicles is emphasized by turning on the headlights, which facilitates mutual recognition.However, during daytime driving, vehicles can be visually recognized only by natural light, so mutual recognition depends on the situation. May run out.

In recent years, attention has been paid to the effect of the headlights being viewed, and it has been encouraged to turn on the headlights even during daytime driving. As for motorcycles, the headlights are always on at all times (daytime lighting).

On the other hand, in the case of automobiles, some companies (transportation companies, taxi companies, etc.) turn on their headlights in the daytime, and their accident prevention effects have been reported. Heretofore, various technologies relating to lighting control of vehicle headlights have been proposed.

For example, by providing an inverter that converts DC from an on-board battery into AC and adding means for adding DC from the battery and AC from the inverter, higher brightness and longer life can be achieved. A technique of lighting a headlight made of an incandescent light bulb or the like without shrinking has been proposed (for example, Patent No. 3080620).

However, in conventional four-wheeled vehicles, the headlights are turned on and off regardless of the key switch (engine key) NZO FF. Lighting operation It is necessary to turn off the lighting switch when getting off. For this reason, the headlights may be forgotten to be turned on, and the battery may be discharged when the headlights are forgotten to be turned off.

In addition, the headlights are set to have the brightness and direction based on night lighting, and since the headlights (incandescent bulbs) include various types of wavelengths, they can be used during daytime lighting. Has a problem that good visibility cannot be exhibited.

In addition, since incandescent bulbs such as halogen lamps are usually used as the light source for the headlights, turning on the headlights during the daytime not only shortens the life of the light source but also increases the power There are inconveniences such as shortening of fuel consumption and lowering of fuel consumption. In addition, if fuel consumption increases due to this decrease in fuel efficiency, carbon dioxide emissions will increase, which will also worsen the global environment.

Furthermore, for example, if a new light different from the headlight is provided on the front of the vehicle body and it is decided to light it, it is necessary that the lighting of this new light be quickly and reliably recognized by others. Was.

However, in the daytime, the surroundings were bright enough only with natural light, and the human eyes were used to the brightness. For this reason, simply turning on a low-intensity light outdoors in the daytime would be masked by the surrounding brightness, making it difficult to recognize the light.

The present invention has been made in view of the above circumstances, and prevents forgetting to turn on the light in the daytime, avoids battery discharge due to forgetting to turn off the light, and has better visibility compared to daylighting with the headlight. An object of the present invention is to provide a daytime lighting device for a vehicle that can be used to make other people quickly and surely recognize the presence of their vehicle. Disclosure of the invention

In order to achieve the above object, a daytime lighting device for a vehicle according to the present invention is provided on a vehicle, and a daytime running light that emphasizes the presence of the vehicle by lighting the vehicle; Or a daytime running light lighting circuit for turning on / off the daytime running light according to the rotation / stop of the engine in the vehicle. And the light source of the daytime running light is constituted by a light emitting diode.

With such a configuration of the vehicle daytime lighting device, it becomes possible to perform daytime lighting only by operating the key switch without consciously operating the lighting switch as in the related art. Thus, it is possible to prevent forgetting to turn on the light in the daytime and to avoid discharging the battery due to forgetting to turn off the light.

In addition, since the vehicle is equipped with daytime running lights, its brightness and direction can be optimized for daytime lighting, and as a result, compared to when headlights are used for daytime lighting, a better Visibility can be exhibited.

In addition, light-emitting diodes are used as light sources for daytime running lights, so power consumption is significantly reduced compared to the case where incandescent bulbs such as halogen lamps are used as light sources.

0-1 100) Not only can it be possible, but also fuel efficiency can be improved with reduction in power consumption. For example, even if one vehicle saves 1 liter / month in fuel consumption due to improved fuel efficiency, in Japan, which has about 700,000 four-wheeled vehicles, about 700,000 100,000 liters of fuel can be saved in Z month. Moreover, reduced fuel consumption reduces carbon dioxide emissions, which also helps protect the global environment.

In addition, light emitted from a light emitting diode used as a light source for daytime running lights has a single wavelength. Therefore, compared to a headlight (incandescent bulb) that emits light containing various wavelengths, very good visibility can be obtained even under sunlight. Therefore, the driver of the vehicle can promptly and surely recognize the existence of the vehicle.

Further, the vehicle daytime lighting device of the present invention, the daytime running light lighting circuit, day and night discriminating means for discriminating day and night, When the day and night discriminating means determined to be nighttime, the daytime running light, It has a dimming / extinguishing means for automatically dimming or extinguishing the light.

Such a configuration of the vehicle daytime lighting device prevents excessive light intensity of the daytime running lights during nighttime driving, thereby avoiding the inconvenience of causing other vehicles or pedestrians to feel glare. .

In the daytime lighting device for a vehicle according to the present invention, the day / night determining means determines that the vehicle is in the nighttime based on lighting of a headlight or a small lamp provided in the vehicle. There is a configuration to do.

If the daytime lighting device for a vehicle has such a structure, day / night discrimination can be performed with a simple circuit configuration, and cost can be reduced.

Further, the daytime lighting device for a vehicle according to the present invention is configured such that the daytime running lights are arranged in a symmetrical manner at a predetermined interval on a front portion of the vehicle as a set of two lights. With such a configuration of the vehicle daytime lighting device, it is possible to easily recognize the vehicle width and the inter-vehicle distance as compared with the case where the daytime running lights are arranged asymmetrically. Further, the daytime lighting device for a vehicle according to the present invention is configured such that the daytime running light is arranged near and below the headlight.

With such a configuration of the vehicle daytime lighting device, the visibility of daytime running lights can be improved, and even if the daytime running lights and headlights are turned on simultaneously, there is no sense of incongruity.

Further, in the vehicle daytime lighting device of the present invention, the daytime running light lighting circuit includes a supply power control unit that controls a voltage and / or a current supplied to the daytime running light.

If the vehicle daylighting device is configured as described above, the voltage and current supplied to the daytime running lights can be controlled, and the brightness (light intensity) and blinking interval of the daytime running lights can be controlled. Etc. can be adjusted.

Therefore, the daytime running light can be turned on at a brightness or a flashing interval suitable for daytime lighting, and the visibility of the daytime running light can be further enhanced. Therefore, it is possible to promptly and reliably recognize the existence of the own vehicle to others.

In the daytime lighting device for a vehicle according to the present invention, the supply power control unit may include an oscillation circuit unit that outputs the voltage and Z or the current as a pulse wave, a cycle of the pulse wave output from the oscillation circuit unit, and a Z Alternatively, it has a configuration having a pulse wave control circuit section for controlling the amplitude.

With such a configuration of the vehicle daytime lighting device, the period of the pulse wave can be controlled, and the daytime running light can be flickered. As a result, the visibility of the daytime running light can be further improved, and the driver of the vehicle can call attention to a driver of another vehicle, a pedestrian, and the like. In addition, by controlling the cycle and amplitude of the pulse wave, it becomes possible to adjust the flashing interval and brightness of daytime running lights. With this, the visibility of the daytime running light can be further enhanced, and the driver of the vehicle can alert others by recognizing the presence of his vehicle.

In addition, by making it possible to realize the blinking time and brightness according to the traveling state and the surrounding conditions, it is possible to ensure that other vehicles and the like recognize the vehicle. Further, in the vehicle daytime lighting device of the present invention, the supply power control unit includes a bias power supply circuit unit that outputs a voltage and / or a current having a constant value as power for the bias supplied to the daytime running light. And an excess power control circuit for controlling the period of the voltage and / or Z or current that exceeds a certain value and supplying the cycle-controlled voltage and / or current to daytime running lights. .

With such a configuration of the vehicle daytime lighting device, the brightness of the daytime running light can be made brighter or darker while ensuring a certain level of brightness. As a result, the visibility of the daytime running light can be further improved, and the existence of the vehicle can be surely notified to the other person and the other person's attention can be alerted.

Further, by adjusting the brightness of the daytime running lights according to the surrounding brightness, it is possible to ensure that others recognize the vehicle.

The daytime lighting device for a vehicle according to the present invention is a device for turning on a light in the daytime. Even in the daytime, for example, when the sun is strong and weak, outdoors and premises, morning and evening and during the day, etc. Comparing with each other, the surrounding brightness is different. The human eye, on the other hand, adjusts the amount of light it captures in response to the surrounding light. This means that, for example, at multiple locations with different ambient brightness (or at different time zones), even if the same person sees the same light, the brightness of the light recognized by that person The degree of each will vary.

Therefore, by maintaining the brightness of the lit daytime running lights at a certain level or more, the minimum brightness at which other people can recognize the presence of the vehicle is secured. The brightness of the daylight can be adjusted according to the surrounding brightness, so that the visibility of the daytime running light is improved, and the recognition by other persons in any surrounding situation is more reliable. It can be. Further, in the daytime lighting device for a vehicle according to the present invention, the excess power control circuit unit controls the cycle of the voltage and / or the current that exceeds the predetermined value, and the voltage and the Z or the current controlled by the cycle are: It is configured to add to the voltage and Z or current showing a constant value received from the bias power supply circuit and supply it to daytime running lights.

If the daytime lighting device for a vehicle is configured as described above, the bias power (voltage or current having a constant value) output from the bias power supply circuit unit is replaced with the power (voltage or current) that is periodically controlled by the excess power control circuit unit. Current) can be supplied to daytime running lights.

Therefore, the brightness of daytime running lights can be maintained at a certain level or more by bias power, and the brightness can be made brighter or darker by cycle-controlled power. Can be.

By turning on the daytime running lights that can control the brightness, drivers and passersby of other vehicles can quickly turn on the daytime running lights whose brightness changes while maintaining a constant light quantity. Can be found. Therefore, the driver of the vehicle that turned on the daytime running light can surely notify the other person of his / her vehicle and alert the other person.

In the daytime lighting device for a vehicle according to the present invention, the daytime running light includes a plurality of light sources having different colors.

With such a configuration of the vehicle daytime lighting device, the daytime running light can emit light in a plurality of colors instead of a single color. For this reason, for example, by emitting light in a color that draws attention, such as red or yellow, it is possible to make other people quickly and surely recognize the presence of their vehicle.

Further, as a combination of colors, for example, a combination of white and blue can be considered. This combination is based on the fact that white light is conspicuous in the daytime, while blue light is conspicuous in the evening, and the visibility of the daytime running lights in both the daytime and the evening time zones is different. Can be increased.

Further, in the daytime lighting device for a vehicle according to the present invention, the power supply control unit is configured to light the plurality of light sources at different timings for the same sentence.

If the vehicle daytime lighting device is configured in this manner, the daytime running lights will not emit light monotonously at a constant brightness, but will emit in different colors at various timings. Can light.

As a result, a driver or a pedestrian of a vehicle can easily find a daytime running light whose emission color changes and can reliably recognize the presence of the vehicle.

In the daytime lighting device for a vehicle according to the present invention, the power supply control unit is configured to alternately blink the plurality of light sources, respectively.

If the vehicle daylighting device is configured in this way, the daytime running lights will alternately flash red and yellow, for example, so that others can draw attention to their vehicle. it can. For this reason, others can quickly and reliably recognize the presence of the vehicle that turns on the daytime running light. Brief Description of Drawings

FIG. 1 is a front view of a vehicle provided with a vehicle daytime lighting device of the present invention. FIG. 2 is a block diagram showing a configuration of a daytime lighting device for a vehicle according to the first embodiment.

FIG. 3 is an explanatory diagram showing the contents of control of the lighting switch.

FIG. 4 is a block diagram showing a circuit configuration when a DC voltage is applied to a daytime running light.

FIG. 5 is an explanatory view showing the operation of the daytime lighting device for a vehicle in the first embodiment.

FIG. 6 is a block diagram showing a configuration of a daytime lighting device for a vehicle according to the second embodiment.

FIG. 7 is an explanatory diagram showing the operation of the vehicle daytime lighting device according to the second embodiment.

FIG. 8 is a block diagram showing a configuration of a daytime lighting device for a vehicle according to a third embodiment.

FIG. 9 is an explanatory view showing the operation of the daytime lighting device for a vehicle according to the third embodiment.

FIG. 10 is a block diagram showing a configuration of a daytime lighting device for a vehicle according to a fourth embodiment.

FIG. 11 is an explanatory diagram showing the operation of the daytime lighting device for a vehicle in the fourth embodiment. It is.

FIG. 12 is a block diagram showing a configuration of a daytime lighting device for a vehicle according to a fifth embodiment.

FIG. 13 is an explanatory view showing the operation of the daytime lighting device for a vehicle in the fifth embodiment.

FIG. 14 is a block diagram showing a configuration of a daytime lighting device for a vehicle according to a sixth embodiment.

FIG. 15 is a waveform diagram showing an output waveform of a supply power control unit when a voltage is applied to a daytime running light by a pulse wave.

FIG. 16 is a waveform diagram showing an output waveform of a supply power control unit when a voltage obtained by adding a pulse wave to a DC voltage is applied to a daytime running light.

FIG. 17 is a front view showing a configuration example of a daytime running light according to the seventh embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]

First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of a vehicle provided with a vehicle daylighting device of the present invention. FIGS. 2 and 4 are block diagrams showing a configuration of a vehicle daylighting device according to the first embodiment. FIG. 3 is an explanatory diagram showing the content of control in the lighting switch, and FIG. 5 is an explanatory diagram showing the operation of the daytime lighting device for a vehicle in the first embodiment.

The vehicle 10 provided with the vehicle daytime lighting device 100 of the present embodiment is a four-wheeled vehicle as shown in FIG. 1, and a headlight 11 is provided in front of the vehicle 10 in advance. 1, a small lamp 13, and a direction indicator lamp 14. Each of these headlights 12, small lamps 13 and direction indicator lamps 14 is a set of two, and is symmetrically arranged at predetermined intervals.

As shown in FIG. 2, the headlights 12 and the small lamps 13 are switched on and off by switching a lighting switch 15 provided in the vehicle. For example, as shown in FIG. 3, when the lighting switch 15 is "OFF", both the headlights 12 and the small lamps 13 are turned off. On the other hand, when the writing switch 15 is in the "first position (1st step)", only the small lamp 13 is lit and the headlight 12 is not lit. Further, when the lighting switch 15 is in the “second position (two steps)”, both the headlight 12 and the small lamp 13 are turned on.

The left and right direction indicator lamps 14 are selectively turned on and off according to the operation of a direction indicator lever (not shown) provided in the vehicle.

Further, as shown in FIG. 2, the vehicle 10 includes a key switch 16 functioning as a main switch and an engine start switch. When a predetermined key is inserted into the key switch 16 and turned from this position (OFF) to the first position (ON), the electric current of the battery 17 is supplied to the electric components provided in the vehicle 10. Further, when the key is turned to a second position (ON) (not shown), the starter motor (not shown) is started, and the engine is started.

Then, when the engine is started, the vehicle 10 can run, and the alternator (not shown) generates power using the engine power, and the battery 17 is charged. The current supply from the battery 17 to each electrical component is performed via the fuse box 18.

The key switch 16 and the lighting switch 15 are connected in parallel to the battery 17 as shown in FIG. Therefore, the lighting of the headlight 12 ゃ small lamp 13 by the lighting switch 15 is always permitted irrespective of the position of the key switch 16.

As shown in FIG. 2, the vehicle daytime lighting device 100 is provided with a daytime running light 110 and a daytime running light lighting circuit 120. The daytime running light 110 is composed of a rectangular case 1 1 1 1 long in the left and right direction, a plurality of light emitting diodes 1 1 2 arranged inside the case 1 1 1 facing forward, and a case 1 1 1 1 is a translucent cover that covers the front opening.

As the light emitting diode 112, for example, a high brightness white light emitting diode can be used. By using light emitting diodes 1 and 2 as the light source for daytime running lights 110, they can be lit with extremely low power consumption compared to incandescent bulbs such as halogen lamps. it can. This improves fuel efficiency, reduces fuel consumption, and reduces carbon dioxide emissions, thereby protecting the global environment. In addition, since the light emitting diode emits light of a single wavelength, better visibility can be obtained even under sunlight compared to conventional headlights (incandescent bulbs).

As shown in FIG. 1, the daytime running light 110 is attached to the front part 11 of the vehicle 10 and is lit during the daytime by the daytime running light lighting circuit 120. In other words, the daytime running light 110 attached to the vehicle 10 is turned on during the day without using the headlight 1 2 during the daytime, so its brightness and direction are optimized for daytime lighting, and Good visibility can be exhibited as compared with the headlight 12.

As shown in FIG. 1, the daytime running lights 110 are paired, and are symmetrically arranged at predetermined intervals on the front part 11 of the vehicle 10. Therefore, by illuminating the left and right daytime running lights 110, it becomes possible to easily recognize the vehicle width and the inter-vehicle distance.

In addition, the daytime running light 110 is arranged near the lower side of the headlight 12 as shown in FIG. As a result, the visibility of the daytime running light 110 can be improved, and an uncomfortable feeling when the daytime running light 110 and the headlight 12 are simultaneously turned on can be eliminated.

As shown in Fig. 2, the daytime running light lighting circuit 120 is composed of a dimming unit (dimming 消灯 extinguishing means, day / night discriminating means) and a plurality of dimming units drawn out from the dimming unit. Wirings 122 to 126.

The wiring 122 is drawn out from the current input terminal t 1 of the dimming unit 122 and connected to the current supply line downstream of the key switch 16.

The wiring 123 is drawn out from the ground terminal t2 of the light attenuator unit 121 and connected to the body of the vehicle 10.

The wiring 124 is drawn out from the positive output terminal t3 of the dimming unit 122 and connected to the positive wiring of the daytime running light 110.

The wiring 125 is drawn from the negative output terminal t4 of the dimming unit 121 and connected to the negative wiring of the daytime running light 110.

Further, the wiring 1 2 6 is drawn out from the signal input terminal t 5 of the dimming unit 1 2 1,

5 is connected to the small lamp wiring on the downstream side. As shown in Fig. 4, the internal circuit 1 2a of the dimming unit 1 2 includes a key switch 16 and daytime running light 1 10 ([LED] or [discharge lamp and organic luminous body ( The light source)] is connected in series with the set lamp body having the lighting unit (DC lighting). Therefore, basically, the daytime running light 110 can be turned on / off according to ON / OFF of the key switch 16.

As a result, it is possible to perform daytime lighting only by operating the key switch 16 without intentionally operating the lighting switch 15. As a result, it is possible to prevent forgetting to turn on the light in the daytime and to avoid discharging the battery 17 due to forgetting to turn off the light.

Also, when the signal input terminal is at a negative voltage, that is, when the lighting switch 15 is in the OFF position, the dimming unit 1 2 1 supplies the specified lighting current to the daytime running light 1 10, and the signal input terminal When is a positive voltage, that is, when the lighting switch 15 is in the first or second position, a dimming current lower than a specified value is supplied to the daytime running light 110.

That is, during night driving in which the lighting switch 15 is operated to the first or second position, the daytime running light 110 is lit in a dimmed state. This prevents the amount of light of the daytime running lights 110 from becoming excessive during nighttime running, and avoids the inconvenience of causing other vehicles or pedestrians to feel glare.

In addition, since the dimming unit 122 determines that it is night based on the lighting of the small lamp 13, day and night can be determined with a simple circuit configuration. As the dimming unit 122, a known dimming unit configured to dimming the headlight 12 can be used.

Next, the operation of the vehicle daytime lighting device 100 in the first embodiment will be described with reference to FIG.

As shown in the figure, the daytime running light 110 turns off when the key switch 16 is turned off, regardless of the position of the lighting switch 15. On the other hand, when key switch 16 is ON, if lighting switch 15 is in the OFF position, it lights up in the normal state, and lighting switch 15 is in the first or second position (small lamp 13 or headlight 1). If (2 is lit), the light turns on in the dimmed state. Hereinafter, second to sixth embodiments of the present invention will be described with reference to the drawings. However, in the configuration common to the first embodiment, only the hundreds digit is changed, and the description is omitted.

[Second embodiment]

Next, a second embodiment of the present invention will be described with reference to FIG. 6 and FIG. FIG. 6 is a block diagram showing the configuration of the daytime lighting device for a vehicle in the second embodiment, and FIG. 7 is an explanatory diagram showing the operation of the daytime lighting device for a vehicle in the second embodiment. .

As shown in FIG. 6, the vehicle daytime lighting device 200 according to the second embodiment is different from the first embodiment in that the connection destination of the wiring 222 pulled out from the signal input terminal of the dimming unit 21 is the same as that of the first embodiment. It is different from the form.

That is, the wiring 2 26 is connected to the head write wiring on the downstream side of the lighting switch 15.

As a result, as shown in Fig. 7, the daytime running light 210 is turned on when the key switch 16 is on, the lighting switch 15 is off, or in the first position (the small lamp 13 is on). For example, if the lighting switch 15 is in the second position (the small lamps 13 and the headlights 12 are lit), it will be lit in a dimmed state.

[Third embodiment]

Next, a third embodiment of the present invention will be described with reference to FIG. 8 and FIG. FIG. 8 is a block diagram showing the configuration of the daytime lighting device for a vehicle according to the third embodiment, and FIG. 9 is an explanatory diagram showing the operation of the daytime lighting device for a vehicle according to the third embodiment. .

As shown in FIG. 8, the vehicle daytime lighting device 300 of the third embodiment is different from the first embodiment in that a light-off unit 3221 is provided instead of the dimming unit 122 of the first embodiment. This is different from the first embodiment.

That is, when the signal input terminal is at a negative voltage, that is, when the lighting switch 15 is in the OFF position, the light-off unit 3 2 1 supplies a specified lighting current to the daytime running light 3 10 When the terminal is at positive voltage, that is, when the lighting switch 15 is in the first or second position, the daytime running light 1 Cut off the current supply to 10.

As a result, as shown in FIG. 9, the daytime running light 310 is normally lit when the key switch 16 is 〇1 ^ and the lighting switch 15 is in the OFF position. If the lighting switch 15 is in the first or second position (small lamp 13 or headlight 12 is on), it goes off.

[Fourth embodiment]

Next, a fourth embodiment of the present invention will be described with reference to FIG. 10 and FIG. FIG. 10 is a block diagram showing the configuration of a daytime lighting device for a vehicle according to a fourth embodiment. FIG. 11 is an explanatory diagram showing the operation of the daytime lighting device for a vehicle according to the fourth embodiment. .

As shown in FIG. 10, the vehicle daytime lighting device 400 of the fourth embodiment has a third embodiment in which the connection destination of the wiring 426 drawn out from the signal input terminal of the light-off unit 421 is the third embodiment. It is different from the form.

That is, the wiring 4 26 is connected to the head write wiring on the downstream side of the lighting switch 15.

As a result, as shown in FIG. 11, when the key switch 16 is ON, the lighting switch 15 is set to 〇FF or the first position (the small lamp 13 lights up) when the key switch 16 is ON. If it is, it lights in the normal state, and if the lighting switch 15 is in the second position (the small lamps 13 and the headlights 12 are on), it goes off.

[Fifth Embodiment]

Next, a fifth embodiment of the present invention will be described with reference to FIG. 12 and FIG. FIG. 12 is a block diagram showing a configuration of a daytime lighting device for a vehicle according to a fifth embodiment. FIG. 13 is an explanatory diagram showing an operation of the daytime lighting device for a vehicle according to the fifth embodiment. .

As shown in FIG. 12, the daytime lighting device 500 for a vehicle according to the fifth embodiment includes a dimming / extinguishing unit 5 2 1 instead of the dimming unit 1 2 1 of the first real form. This is different from the first embodiment in that the first embodiment is provided.

That is, the dimming / extinguishing unit 5 21 has two signal input terminals, and turns on the daytime running light 5 10 in a dimmed state according to one terminal input, and the other end. The daytime running light 5110 is turned off in response to a child input.

The wiring 5 26 drawn out from the signal input terminal for dimming is connected to the small lamp wiring on the downstream side of the lighting switch 15, and the wiring 5 27 drawn out from the signal input terminal for extinguishing is connected to the lighting switch 1 Connected to the head write wiring downstream of 5.

As a result, as shown in Fig. 13, the daytime running light 5 10 lights up in the normal state when the key switch 16 is at 〇N and the lighting switch 15 is in the OFF position, and the lighting switch 5 If 15 is in the first position (small lamp 13 is lit), it is dimly lit, and if lighting switch 15 is in the second position (small lamps 13 and headlights 12 are lit) Turns off.

The present invention is not limited to the above embodiments. For example, the light source of a daytime running light is not limited to a light emitting diode, and various light sources such as a discharge lamp can be used.

In each of the above embodiments, the daytime running light is turned on / off according to the key switch ONZOFF, but the daytime running light is turned on / off according to the rotation / stop of the engine in the vehicle. Is also good. In this case, the power generation signal of the alternator can be used as a means for detecting engine rotation.

[Sixth embodiment]

Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 1 is a circuit configuration diagram showing a configuration of a daytime running light lighting circuit in a vehicle daylighting device of the present invention.

This embodiment is different from the first embodiment in the configuration of the daytime running light lighting circuit. That is, in the first embodiment, the lighting control of the daytime running light is performed by DC (direct current), but in the present embodiment, the lighting control is performed by using a pulse wave. Other components are the same as in the first embodiment. Therefore, in FIG. 14, the same components as those in FIG. 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in Fig. 14, the daytime running light lighting circuit 62 0 is provided with a dimming unit (dimming / extinguishing unit) 6 2 1 and multiple wiring 6 2 2 to 6 2 6 It has a part 6 3 1.

The power supply control section 631 controls the voltage and current supplied from the battery 17 to the daytime running light 110, and includes a constant voltage circuit section 632 and an oscillation circuit section 633. And an oscillation control circuit section 634 and a switching block 635.

Here, the constant voltage circuit section 6332 converts the voltage supplied from the battery 17 into a predetermined voltage value, and while maintaining this voltage value, a circuit that supplies the voltage to the oscillation circuit section 633. It is.

The constant voltage circuit section 632 includes, for example, a transformer (not shown) for converting a voltage value, a filter (not shown) for cutting noise, and a smoothing circuit (not shown) for reducing ripple. Zu) etc. are included.

The oscillation circuit section 633 is a circuit that oscillates a pulse wave having a predetermined period and amplitude based on the voltage from the constant voltage circuit section 632.

For example, a multivibrator or a blocking oscillator, which is a non-sinusoidal oscillator, can be used as the oscillation circuit section 633.

In the present embodiment, the waveform of the oscillation output from the oscillation circuit section 633 is a pulse wave. However, the waveform is not limited to a pulse wave, and the lighting control of the daytime running light 110 can be performed. For example, a full-wave (or half-wave) rectified waveform, a sawtooth waveform, or a trapezoidal waveform of an AC wave (sinecurve) may be used. The oscillation control circuit section 634 is a circuit that controls the amplitude (duty) and cycle (Hz) of the pulse wave output from the oscillation circuit section 633.

That is, the oscillation control circuit section 634 has a function as a pulse wave control circuit section, similarly to the switching block 635.

The switching block 635 supplies the pulse wave from the oscillating circuit section 633 to the daytime running light 110, and supplies the pulse wave based on the ON / OFF of the key switch 16. It has a pulse wave control circuit section 636 that stops. The pulse waveform control circuit 636 adjusts the voltage (or current) using a transformer, choke, or the like.

The waveform of the voltage (output voltage at the plus output terminal t3) supplied from the pulse wave control circuit section 636 to the daytime running light 110 is as shown in FIG. become. That is, when the supply voltage is "V out", the daytime running light 110 is turned on. On the other hand, when the supply voltage is "0", the daytime running light 110 is turned off. Therefore, when the pulse wave shown in the figure is supplied, the daytime running light 110 repeatedly turns on and off at predetermined time intervals. By making the blinking interval of the daytime running light 110 adjustable as described above, the visibility of the daytime running light 110 can be further enhanced.

Further, the switching block 635 includes a bias power (including a bias voltage indicating a constant voltage value and a bias current indicating a constant current value) as a voltage or a current to be supplied to the daytime running light 110. A bias power supply circuit section 378 that outputs a bias voltage, and an excess power control circuit section 638 that performs a cycle control of a voltage or a current exceeding a value indicated by a bias voltage or a bias current.

The bias power supply circuit 637 supplies the DC voltage (or direct current) from the battery 17 to the daytime running light 110 via the excess power control circuit 638. Note that the bias power supply circuit 633 must rectify the pulse wave from the oscillation circuit 633 into a DC waveform instead of the DC voltage (or DC current) from the battery 17 to generate a DC voltage. You can also.

The excess power control circuit section 638 adds the pulse wave from the oscillation circuit section 633 to the DC voltage (or DC current) from the bias power supply circuit section 637 to provide a daytime running light 1 Supply to 10

That is, the excess power control circuit 638 outputs a voltage indicating the value of “V out” when a pulse wave is added to the DC voltage, and outputs a bias voltage “V b” when the pulse wave is not added to the DC voltage. A voltage indicating the value of "" is output, and no voltage is output when the daytime running light 110 is not turned on (output voltage is "0" [V]).

The waveform of the voltage (the voltage at the plus output terminal t3) supplied from the excess power control circuit 638 to the daytime running light 110 is as shown in FIG. That is, when the voltage supplied to the daytime running light 110 is “V out”, the daytime running light 110 turns on with strong light. On the other hand, when the supply voltage is the bias voltage "V 1D", the daytime running light 110 is lit with weak light. Then, when the supply voltage is not output (when "0"), the daytime running light 110 is turned off. However, when the bias control is not performed, the noise power supply circuit section 637 and the excess power control circuit section 638 need not be provided.

Further, in the above description, the brightness and the like of the daytime running light 110 are adjusted mainly by controlling the voltage. However, the adjustment can be similarly performed not by the voltage but by the current.

Further, in the pulse wave control circuit section 636 and the excess power control circuit section 638 of the switching block 635, the amplitude as well as the cycle of the pulse wave can be controlled. This amplitude control can be realized by, for example, an amplifier circuit using a transistor or the like.

The amount of change in the amplitude can be determined based on the brightness around the vehicle. In this case, the daytime running light lighting circuit 620 includes a brightness detection device (for example, a photodiode, a phototransistor, and the like, not shown) for detecting the brightness around the vehicle, and the brightness detection circuit. A change amount setting unit (not shown) that sets the change amount of the pulse wave amplitude based on the signal from the device and transmits it to the pulse wave control circuit unit 636 and excess power control circuit unit 638 is provided. .

By controlling the amplitude of the pulse wave in this way, the brightness (light intensity) and blinking interval of the daytime running light 110 can be adjusted. Therefore, the visibility of the daytime running light 110 can be further improved.

Adjustment of the blinking time interval and brightness of the daytime running light 110, that is, adjustment of the pulse wave cycle and amplitude, may be performed by the driver of the vehicle.

In this case, the daytime running light lighting circuit 620 includes an adjustment operation unit (for example, an adjustment knob or an adjustment slide, not shown) operated by the driver and a displacement amount of the adjustment operation unit. An adjustment control unit (not shown) for changing the period and amplitude of the pulse wave is provided.

The adjustment control unit may be provided with, for example, a comparator circuit for adjusting the cycle of the pulse wave, an amplifier circuit for adjusting the amplitude thereof, and the like. By providing a supply power control unit in the lighting circuit for daytime running lights to control the period and amplitude of the voltage (or current) supplied to the daytime running lights, the daytime running lights can blink at predetermined time intervals. it can. Therefore, by flashing the daytime running lights in the daytime of the own vehicle, it becomes possible to promptly and reliably recognize the existence of the own vehicle to other people.

In addition, by providing a bias power supply circuit and an excess power control circuit in the supply power control unit, the brightness of the lit daytime running lights is always maintained at a certain level or more, so that others can use their own power. The presence of the vehicle can be reliably recognized, and the brightness of the daytime running lights can be adjusted according to the surrounding brightness, so that the recognition of other people can be made more reliable. it can.

[Seventh embodiment]

Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 1 is a front view showing a configuration of a daytime running light in the vehicle daylighting device of the present invention.

The present embodiment is different from the first embodiment in the configuration of the daytime running light. That is, in the first embodiment, the light sources of the daytime running lights all have the same color, whereas in the present embodiment, the light source is configured with a plurality of different colors. Other components are the same as in the first embodiment.

Therefore, in FIG. 17, the same components as those in FIG. 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 17, the daytime running light 110 has a plurality of light sources (light emitting diodes 112) with different colors.

This light source (light emitting diode 1 1 2) is composed of a combination of a light emitting diode 1 12 a emitting light of color 1 (for example, red) and a light emitting diode 1 12 b emitting light of color 2 (for example, yellow). it can.

In the figure, the light source of the daytime running light 110 has two colors that can emit light. However, the color is not limited to two colors, and may be three or more colors.

In addition, in the figure, the arrangement of each color is such that the left half toward the daytime running light 110 is colored a and the right half is colored b, but is not limited to these arrangements. The upper half and the lower half may be arranged.

Further, the color used for the light source is not limited to red and yellow, but various colors such as white, blue, orange, and green can be used.

In particular, if we combine white and blue, white light will stand out during the day and blue Since the colored light is conspicuous in the evening, the visibility of the daytime running light 110 can be enhanced both in the daytime and in the evening.

Each light source included in the daytime running light 110 can be turned on at the same or different timing by controlling the switching book 635 of the daytime running light lighting circuit 62.

Further, each of the light sources can be turned on and off alternately under the control of the switching block 635.

By providing a plurality of light sources of different colors on a daytime running light and varying the light emission timing of each light source, it becomes easier for a vehicle driver or a pedestrian to pay attention to the daytime running light.

Therefore, even in the daytime, by turning on the daytime running lights, it becomes possible for other people to quickly and surely recognize the presence of the vehicle. Industrial applicability

As described above in detail, according to the present invention, it is possible to perform daylighting only by operating the key switch of the vehicle. Since the vehicle is equipped with daytime running lights, its brightness and direction can be optimized for daytime lighting, and as a result, headlights can be used for daytime lighting. It provides better visibility than other vehicles, and makes it possible for other people to quickly and reliably recognize the existence of their own vehicle. In the case of a light-emitting diode, not only can the power consumption be significantly reduced compared to using an incandescent bulb such as a halogen lamp as the light source, but also the fuel consumption can be improved with the reduction in power consumption. It can be, moreover, I can provide a daytime lighting device for a possible increase vehicle its visibility UninaTsuta.

Claims

The scope of the claims

1. A daytime running light that is attached to the vehicle and emphasizes the presence of the vehicle by lighting it;

A daytime running light lighting circuit for turning on / off the daytime running light in response to the 〇NZ キ FF of the key switch in the vehicle or the rotation Z of the engine in the vehicle,

The light source of the daytime running light is a light emitting diode

A daytime lighting device for a vehicle, comprising:

2. The daytime running light lighting circuit is

Day / night determining means for determining day / night;

A dimming / extinguishing means for automatically dimming or extinguishing the daytime running light when the day / night discriminating means determines that it is nighttime.

The daytime lighting device for a vehicle according to claim 1, wherein:

3. The daytime lighting device for a vehicle according to claim 1 or 2, wherein the daytime / nighttime determining means determines the nighttime based on lighting of a headlight or a small lamp provided in the vehicle.

4. The daytime lighting device for a vehicle according to claim 1, wherein the daytime running lights are symmetrically arranged at predetermined intervals on a front portion of the vehicle as a set of two.

5. The daytime lighting device for a vehicle according to claim 1, wherein the daytime running light is arranged near and below the headlight.

6. The daytime running light lighting circuit is

Having a supply power control unit for controlling the voltage and Z or current supplied to the daytime running light. The daytime lighting device for a vehicle according to claim 1, wherein:

7. The supply power control unit includes:

An oscillation circuit section that outputs the voltage and Z or current as a pulse wave;

And a pulse wave control circuit for controlling the cycle and / or amplitude of the pulse wave output from the oscillation circuit.

7. The daytime lighting device for a vehicle according to claim 6, wherein:

8. The supply power control unit includes:

A bias power supply circuit unit that outputs a voltage and a Z or a current showing a constant value as power for a bias supplied to the daytime running light,

An excess power control circuit for controlling the period of the voltage and the Z or the current that exceeds the predetermined value, and supplying the period-controlled voltage and the Z or the current to the daytime running light.

7. The daytime lighting device for a vehicle according to claim 6, wherein:

9. The excess power control circuit section

For the voltage and the Z or the current exceeding the fixed value, the cycle is controlled, and the voltage and / or the current whose cycle is controlled is received from the bias power supply circuit. And / or 'or add it to the current and supply it to the daytime running light

9. The daytime lighting device for a vehicle according to claim 8, wherein:

10. The daytime running light has a plurality of light sources of different colors.

The daytime lighting device for a vehicle according to claim 1, wherein:

11. The supply power controller turns on the plurality of light sources at the same or different timings.

The daytime lighting device for a vehicle according to claim 10, wherein:

12. The daytime lighting device for a vehicle according to claim 10, wherein the supply power control unit causes the plurality of light sources to alternately blink.