JP4151675B2 - Vehicle lighting device - Google Patents

Description

  The present invention relates to a vehicular illumination device that controls the intensity of light emitted from a vehicular lamp in accordance with the light environment around the vehicle.

  This type of vehicle illumination device (or vehicle illumination system) is conventionally known (for example, Patent Document 1 and Patent Document 2). Hereinafter, a conventional vehicle lighting device will be described. A conventional vehicular lighting device includes a vehicular lamp such as a stop lamp (or a brake lamp), a light detection unit, and a control device. Hereinafter, the operation of the conventional vehicle lighting device will be described. First, the light detection means detects the light environment around the vehicle and outputs a detection signal to the control device. This control device controls the intensity (light flux, luminous intensity, illuminance, light quantity) of light emitted from the vehicular lamp based on the detection signal from the detection means in accordance with the light environment around the vehicle. As a result, the light emitted from the vehicle lamp shines brightly and brightly when the surroundings of the vehicle are bright, and weakly and darkly shines when the surroundings of the vehicle are dark. As a result, the conventional vehicular lighting device can ensure visibility even when the surroundings of the vehicle are bright, while reducing power consumption when the surroundings of the vehicle are dark.

  However, since the conventional vehicular lighting device simply provides the light detection means on the vehicle or the like, the light detection means emits light from the vehicle lamp provided with the light detection means or from other vehicle lamps. There is a problem that it is difficult to detect the light environment around the vehicle with high accuracy under the influence of light. Moreover, the conventional vehicle lighting device has a problem that a new member such as an attachment member for attaching the light detection means to the vehicle or a protection member for protecting the light detection means is necessary.

Japanese Utility Model Publication No. 60-55555 JP 62-116330 A

  The problems to be solved by the present invention are that, in the conventional vehicle lighting device, it is difficult to detect the light environment around the vehicle with high accuracy, and a new member is required. is there.

  The present invention (the invention according to claim 1) is provided in a flashing type vehicle lamp mounted on a vehicle and a flashing type vehicle lamp, and detects a light environment around the vehicle and outputs a detection signal. Light detecting means, a shielding member for shielding light from other vehicle lamps mounted on the vehicle from entering the light detecting means, and a flashing type vehicle lamp out of the detection signals from the light detecting means A control device for controlling the intensity of light emitted from a blinking type vehicle lamp or other vehicle lamp corresponding to the light environment around the vehicle, using the detection signal when the light is off as light quantity data It is characterized by providing.

  Further, the present invention (the invention according to claim 2) is characterized in that the shielding member is composed of a light-impermeable member such as a lamp housing or a reflector of a flashing type vehicle lamp.

  Further, according to the present invention (the invention according to claim 3), the control device causes the light source of the blinking type vehicle lamp to blink and outputs a blinking drive signal, and a detection signal from the light detection means. When the blinking type vehicle lamp is turned off by disabling the detection signal when the blinking type vehicle lamp is turned on among the detection signals from the light detection means by the blinking drive signal from the light source drive circuit A light amount measuring circuit that outputs the detection signal of the light as light amount data, and the light environment around the vehicle based on the latest one light amount data from the light amount measuring circuit and determining the light environment around the vehicle through the light source driving circuit And a vehicle ambient light environment determination circuit that controls a light source of a flashing type vehicle lamp or a light source of another vehicle lamp with an intensity of light corresponding to the environment.

  Furthermore, according to the present invention (the invention according to claim 4), the control device causes the light source of the blinking type vehicle lamp to blink and outputs a blinking drive signal, and a detection signal from the light detection means. And the blinking drive signal from the light source drive circuit, the detection signal when the blinking type vehicle lamp is turned on among the detection signals from the light detection means is invalidated, and the blinking type vehicle lamp is turned off. A light intensity measurement circuit that outputs a detection signal at the time as light intensity data, and a light environment around the vehicle through a light source drive circuit by judging the light environment around the vehicle based on a plurality of light intensity data from the light intensity measurement circuit And a vehicle ambient light environment determination circuit that controls a light source of a flashing type vehicle lamp or a light source of another vehicle lamp with a light intensity corresponding to the above.

  Furthermore, according to the present invention (the invention according to claim 5), the control device causes the light source of the blinking type vehicle lamp to blink and outputs a blinking drive signal, and a detection signal from the light detection means. And the flashing drive signal from the light source drive circuit, the detection signal when the flashing type vehicle lamp is turned off among the detection signals from the light detection means is output as light quantity data and the flashing type vehicle lamp is turned on The light amount measuring circuit that outputs the light amount data while holding the previous light amount data, and the light environment around the vehicle based on the light amount data from the light amount measuring circuit, and through the light source driving circuit A vehicle ambient light environment determination circuit that controls a light source of a flashing type vehicle lamp or a light source of another vehicle lamp with a light intensity corresponding to the ambient light environment, and And wherein the door.

  The vehicle lighting device according to the present invention (the invention according to claim 1) can shield light from other vehicle lamps mounted on the vehicle from being incident on the light detection means by the shielding member. The control device uses, as light amount data, a detection signal when the blinking type vehicle lamp is turned off among detection signals from the light detection means. For this reason, the vehicle lighting device according to the present invention (the invention according to claim 1) blocks light from other vehicle lamps and blocks light from its own flashing type vehicle lamp. Since only the extraneous light is detected and used as the light amount data, the light environment around the vehicle can be detected with high accuracy. As a result, the vehicle lighting device according to the present invention (the invention according to claim 1) corresponds the intensity of light emitted from the flashing type vehicle lamp or other vehicle lamps to the light environment around the vehicle. Can be accurately and reliably controlled.

  In the vehicle lighting device of the present invention (the invention according to claim 1), since the light detection means is provided in a blinking type vehicle lamp, an attachment member or light for attaching the light detection means to the vehicle is provided. A member such as a protective member for protecting the detection means can also be used as a member of an existing flashing type vehicle lamp. For this reason, the vehicle lighting device according to the present invention (the invention according to claim 1) does not require a new member, so that the manufacturing cost is reduced correspondingly, and the space for providing the light detection means is also increased. Since it becomes unnecessary, the freedom degree of vehicle design increases.

  In the vehicle lighting device according to the present invention (the invention according to claim 2), the light shielding member such as a lamp housing or a reflector of a vehicle lamp whose flashing member is a flashing type, that is, a flashing type vehicle lamp existing Therefore, the number of parts is not increased and the lamp is not enlarged.

  Furthermore, in the vehicular illumination device according to the present invention (the invention according to claim 3), the control device invalidates the detection signal when the flashing type vehicle lamp is lit among the detection signals from the light detection means. The detection signal when the flashing type vehicle lamp is turned off is used as the light amount data, and the intensity of light emitted from the flashing type vehicle lamp is determined based on the latest one light amount data. It controls according to the environment. For this reason, the vehicular illumination device according to the present invention (the invention according to claim 3) controls the light intensity based on the latest one light quantity data. Therefore, the light intensity is increased corresponding to the latest light environment. The accuracy can be controlled.

  Furthermore, in the vehicle lighting device according to the present invention (the invention according to claim 4), the control device invalidates the detection signal when the flashing vehicle lamp is lit among the detection signals from the light detection means. The detection signal when the flashing type vehicle lamp is turned off is used as the light quantity data, and the intensity of light emitted from the flashing type vehicle lamp is determined based on a plurality of light quantity data. Is controlled in response to For this reason, the vehicular illumination device according to the present invention (the invention according to claim 4) controls the light intensity based on a plurality of light quantity data. It is possible to control the light intensity so as to change slowly without changing, so that the driver or pedestrian of other vehicles does not feel uncomfortable.

  Furthermore, in the vehicular illumination device according to the present invention (the invention according to claim 5), the control device outputs the detection signal when the blinking vehicular lamp is turned off among the detection signals from the light detection means. When the flashing type vehicle lamp is lit, the previous light amount data is retained, and the intensity of light emitted from the flashing type vehicle lamp is determined based on this light amount data. It controls according to the environment. For this reason, the vehicle lighting device according to the present invention (the invention according to claim 5) controls the light intensity based on the continuous light quantity data, and therefore controls the light intensity in real time with respect to the constantly changing light environment. be able to.

  Embodiments of a vehicle lighting device according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments.

  Hereinafter, the configuration of the vehicular illumination device in this embodiment will be described. The vehicle lighting device in this embodiment controls the intensity of light emitted from a vehicle lamp mounted on the vehicle in accordance with the light environment around the vehicle, as shown in FIG. A turn signal lamp 1 as a flashing type vehicle lamp, an optical sensor 7 as a light detection means, a shielding member, a control device 8, and a stop lamp 13 as another vehicle lamp are provided.

  The turn signal lamp 1 is a flashing type vehicle lamp that flashes and emits light from a light source to the outside. The turn signal lamp 1 includes a lamp housing 3, a lamp lens 4, a reflector 5, and a light source bulb 6 as a light source. It is configured. A lamp chamber 2 is defined by the lamp housing 3 and the lamp lens 4. The reflector 5 is disposed in the lamp chamber 2. The reflector 5 is attached to the lamp housing 3. The light source bulb 6 is detachably attached to the reflector 5. The reflector 5 is provided with a reflecting surface that reflects light from the light source bulb 6 and transmits the lamp lens 4 and radiates the light to the outside with a predetermined light distribution pattern.

  The stop lamp 13 is another vehicle lamp separate from the turn signal lamp 1 and is a vehicle lamp that irradiates light from a light source to the outside. The stop lamp 13 includes a lamp housing 15, a lamp lens 16, and a reflector. 17 and a light source bulb 18 as a light source. A lamp chamber 14 is defined by the lamp housing 15 and the lamp lens 16. The reflector 17 is disposed in the lamp chamber 14. The reflector 17 is attached to the lamp housing 15. The light source bulb 18 is detachably attached to the reflector 17. The reflector 17 is provided with a reflecting surface that reflects light from the light source bulb 18 and transmits the lamp lens 16 to radiate the light to the outside with a predetermined light distribution pattern. The turn signal lamp 1 and the stop lamp 13 are respectively mounted on the vehicle in a state of being close to each other, and constitute a rear combination lamp.

  The optical sensor 7 is disposed between the lamp lens 4 and the reflector 5 in the lamp chamber 2 of the turn signal lamp 1, and is attached to the reflector 5. The optical sensor 7 detects the light environment around the vehicle by the extraneous light L1 transmitted through the lamp lens 4 and outputs a detection signal. That is, the optical sensor 7 detects a level according to the intensity (light quantity, luminous intensity, luminous flux) of the synthesized light obtained by synthesizing the light L2 from the light source bulb 6 and the extraneous light L1 (see FIG. 2B). A signal (see FIG. 2C) is output.

  The shielding member shields light L3 from other vehicle lamps mounted on the vehicle, for example, the stop lamp 13, the tail lamp, the back lamp, and the license lamp from entering the optical sensor 7. is there. The shielding part is composed of a light impermeable member such as the lamp housing 3 and the reflector 5 of the turn signal lamp 1.

  The control device 8 uses the detection signal when the turn signal lamp 1 is turned off among the detection signals from the optical sensor 7 as light amount data (see FIGS. 2D and 2E), and the light amount. Based on the data, the intensity of light emitted from the turn signal lamp 1 is controlled in accordance with the light environment around the vehicle. As shown in FIG. 1, the control device 8 includes a light source drive circuit 9, a light amount measurement circuit 10, and a vehicle ambient light environment determination circuit 11. The control device 8 uses a computer mounted on the vehicle, for example, a car navigation (navigation device) computer, a control circuit unit, or a dedicated ECU (electronic control unit).

  The light source driving circuit 9 is connected to the light source bulbs 6 and 18 and the light quantity measuring circuit 10 respectively. The light source driving circuit 9 drives the light source bulb 6 of the turn signal lamp 1 to blink, and outputs a blinking driving signal (see FIG. 2A) to the light quantity measuring circuit 10. The light source drive circuit 9 drives the light source 18 of the stop lamp 13.

  The light quantity measurement circuit 10 is connected to the optical sensor 7, the light source drive circuit 9, and the vehicle ambient light environment determination circuit 11, respectively. When the turn signal lamp 1 is turned on among the detection signals from the optical sensor 7, the light quantity measurement circuit 10 is detected by the detection signal from the optical sensor 7 and the blinking driving signal from the light source driving circuit 9. The detection signal when the turn signal lamp 1 is extinguished is output as light quantity data 12 (see FIGS. 1, 2D, and 2E).

  The vehicle ambient light environment determination circuit 11 is connected to the light source drive circuit 9 and the light quantity measurement circuit 10 respectively. The vehicle ambient light environment judgment circuit 11 judges the light environment around the vehicle based on the latest one light quantity data 12 from the light quantity measurement circuit 10, and determines the surrounding environment of the vehicle via the light source driving circuit 9. The light source bulb 6 of the turn signal lamp 1 and the light source 18 of the stop lamp 13 are controlled by the light intensity corresponding to the light environment.

  That is, the vehicle ambient light environment judgment circuit 11 controls the light intensity of the light source bulbs 6 and 18 according to the level of the light quantity data 12 output from the light quantity measurement circuit 10. In other words, the vehicle ambient light environment determination circuit 11 determines that the light environment around the vehicle is bright or dark based on the light amount data 12 from the light amount measurement circuit 10. The vehicle ambient light environment determination circuit 11 controls the light intensity of the light source bulbs 6 and 18 via the light source driving circuit 9 based on the determination of the vehicle ambient light environment. For example, when the vehicle ambient light environment determination circuit 11 determines that the light environment around the vehicle is bright, the light from the light source bulbs 6 and 18 is strongly controlled via the light source drive circuit 9. On the other hand, when the vehicle ambient light environment determination circuit 11 determines that the light environment around the vehicle is dark, the light from the light source bulbs 6 and 18 is controlled to be weak via the light source drive circuit 9.

  The vehicle lighting device in this embodiment is configured as described above, and the operation of the vehicle lighting device in this embodiment will be described below. FIG. 2A shows a turn-on / off blink drive signal output from the light source drive circuit 9. FIG. 2B shows the level of the amount of extraneous light L1. FIG. 2C shows a detection signal output from the optical sensor 7, which is large or small depending on the intensity (light quantity, luminous intensity, luminous flux) of the synthesized light obtained by synthesizing the light L 2 from the light source bulb 6 and the extraneous light L 1. The detection signal of the level is shown. FIGS. 2D and 2E show the light amount data of large and small levels output from the light amount measurement circuit 10.

  First, when the switch is turned on, the light source bulb 6 of the turn signal lamp 1 blinks, for example, in a cycle of about 1 second via the light source drive circuit 9 of the control device 8. That is, the light source bulb 6 is turned on for about 0.5 seconds and then turned off for about 0.5 seconds. The light L2 from the light source bulb 6 at the time of lighting is incident on the reflecting surface of the reflector 5 and reflected in a predetermined direction. The reflected light from this reflecting surface passes through the lamp lens 4 and is irradiated to the outside with a predetermined light distribution. That is, the turn signal lamp 1 flashes and emits the light L2 from the light source bulb 6 to the outside. When the switch is turned off, the light source bulb 6 of the turn signal lamp 1 is turned off.

  Here, when the light source bulb 6 of the turn signal lamp 1 is blinking, the light L2 from the light source bulb 6 at the time of lighting enters the optical sensor 7. On the other hand, light (external light) L 1 from the outside of the turn signal lamp 1 passes through the lamp lens 4 and enters the optical sensor 7. As a result, the optical sensor 7 responds to the intensity (light quantity, luminous intensity, luminous flux) of the synthesized light obtained by synthesizing the light L2 from the light source bulb 6 at the time of blinking and the extraneous light L1 (see FIG. 2B). A level detection signal (see FIG. 2C) is output to the light amount measurement circuit 10 of the control device 8.

  The light quantity measurement circuit 10 inputs a detection signal from the optical sensor 7 and a blinking drive signal (see FIG. 2A) from the light source drive circuit 9. Here, the light quantity measuring circuit 10 invalidates the detection signal when the turn signal lamp 1 is turned on among the detection signals from the optical sensor 7 and outputs the detection signal when the turn signal lamp 1 is turned off. The data 12 (see FIG. 1 and FIG. 2D) is output to the vehicle ambient light environment determination circuit 11. In FIG. 2D, the solid line between the vertical dotted lines is the light amount data 12, and the part where there is nothing between the vertical dotted lines is the part where the detection signal is invalidated.

  Here, the turn signal lamp 1 blinks without being continuously lit, and the cycle of blinking is determined by law. For this reason, even if the turn signal lamp 1 blinks, it is possible to easily know the timing of extinction, so that the light quantity data 12 can be accurately obtained from the detection signal from the optical sensor 7. If the blink cycle is about 1 second, the latest light quantity data 12 every about 1 second can be obtained.

  The vehicle ambient light environment judgment circuit 11 judges the light environment around the vehicle based on the latest one light quantity data 12 from the light quantity measurement circuit 10 and controls the light intensity of the light source bulbs 6 and 18. For example, when the vehicle ambient light environment determination circuit 11 determines that the light environment around the vehicle is bright, a control signal for increasing the light of the light source bulbs 6 and 18 is output to the light source drive circuit 9. On the other hand, if the vehicle ambient light environment determination circuit 11 determines that the light environment around the vehicle is dark, it outputs a control signal to weaken the light from the light source bulbs 6 and 18 to the light source drive circuit 9.

  The light source drive circuit 9 controls the light intensity of the light source bulbs 6 and 18 of the turn signal lamp 1 based on a control signal from the vehicle ambient light environment determination circuit 11. Thereby, when the light environment around the vehicle is bright, the light L2 of the light source bulb 6 of the turn signal lamp 1 and the light of the light source 18 of the stop lamp 13 are controlled to be strong light, so that the light environment around the vehicle is Even if it is bright, the light from the light source bulbs 6 and 18 is sufficiently strong, ensuring visibility. On the other hand, when the light environment around the vehicle is dark, the light L2 of the light source bulb 6 of the turn signal lamp 1 and the light of the light source 18 of the stop lamp 13 are controlled by weak light, so that power consumption can be reduced. Moreover, sufficient visibility can be ensured.

  The vehicle lighting device in this embodiment is configured and operated as described above, and the effects of the vehicle lighting device in this embodiment will be described below.

  In the vehicle lighting device according to this embodiment, the control device 8 uses the detection signal when the turn signal lamp 1 is turned off among the detection signals from the optical sensor 7 as the light amount data 12 and the turn signal lamp 1 and the stop lamp. 13 controls the intensity of light emitted from the vehicle 13 in accordance with the light environment around the vehicle. As a result, the vehicle lighting apparatus according to this embodiment can control the intensity of light emitted from the turn signal lamp 1 and the stop lamp 13 in accordance with the light environment around the vehicle.

  In addition, the vehicular illumination device according to this embodiment is provided with other vehicular lamps such as a stop lamp 13 (which is mounted on the vehicle by a shielding member including the lamp housing 3 and the reflector 5 of the turn signal lamp 1). For example, in the case of a tail lamp, a turn signal lamp arranged at another position, or a front combination lamp, a head lamp, a fog lamp, a turn signal lamp arranged at another position, etc.) light from the light sensor 7 The incident light can be blocked, and the control device 8 uses the detection signal from the optical sensor 7 when the turn signal lamp 1 is turned off as the light quantity data 12. For this reason, the vehicle lighting device according to this embodiment blocks only light from other vehicle lamps and blocks light L2 from its turn signal lamp 1 to detect only external light L1. Since the light amount data 12 is used, the light environment around the vehicle can be detected with high accuracy. Thereby, the illuminating device for vehicles concerning this Example can control the intensity | strength of the light irradiated from the turn signal lamp 1 and the stop lamp 13 correctly and reliably corresponding to the light environment around a vehicle. .

  Further, in the vehicle lighting device according to this embodiment, since the optical sensor 7 is provided in the turn signal lamp 1, an attachment member for attaching the optical sensor 7 to the vehicle and protection for protecting the optical sensor 7 are provided. A member such as a member can be used as the member of the existing turn signal lamp 1, that is, the lamp housing 3, the lamp lens 4, and the reflector 5. For this reason, since the vehicle lighting device according to this embodiment does not require a new member, the manufacturing cost is reduced correspondingly, and a space for providing the optical sensor 7 is also unnecessary. Increase design freedom.

  Furthermore, in the vehicular illumination device according to this embodiment, the shielding member is configured by a light-impermeable member such as the lamp housing 3 and the reflector 5 of the turn signal lamp 1, that is, the existing member of the turn signal lamp 1. There is no increase in the number of parts or an increase in the size of the lamp.

  Furthermore, in the vehicular lighting device according to this embodiment, the control device 8 invalidates the detection signal when the turn signal lamp 1 is lit out of the detection signals from the optical sensor 7, and the turn signal lamp 1 The detection signal when the light is turned off is used as the light quantity data 12, and the intensity of light emitted from the turn signal lamp 1 and the stop lamp 13 based on the latest single light quantity data 12 is adapted to the light environment around the vehicle. Control. For this reason, since the vehicle lighting device according to this embodiment controls the light intensity based on the latest single light quantity data 12, the light intensity can be quickly controlled according to the light environment, and the turn The visibility as the signal lamp 1 and the stop lamp 13 can be sufficiently secured.

  Hereinafter, two examples of modifications of the above embodiment will be described. First, in the vehicular lighting device according to the first modification, the control device 8 invalidates the detection signal when the turn signal lamp 1 is lit among the detection signals from the optical sensor 7 and turns off the turn signal lamp 1. The light intensity data 12 is used as a detection signal at the time of driving, and the intensity of light emitted from the turn signal lamp 1 and the stop lamp 13 is controlled in accordance with the light environment around the vehicle based on the plurality of light quantity data 12. Is. Since the vehicle lighting device according to the first modification controls the light intensity based on the plurality of light quantity data 12, the light intensity does not change suddenly even when the light environment changes rapidly. The light intensity can be controlled so as to change, and the visibility as the turn signal lamp 1 and the stop lamp 13 is sufficiently ensured without causing discomfort to drivers or pedestrians of other vehicles. be able to.

  Next, in the vehicular illumination device according to the second modification, the control device 8 detects when the turn signal lamp 1 is turned off among the detection signals from the optical sensor 7 as shown in FIG. When the signal is the light amount data 12 and the turn signal lamp 1 is lit, the previous light amount data 12 is held, and the intensity of light emitted from the turn signal lamp 1 and the stop lamp 13 based on the light amount data 12 Is controlled in accordance with the light environment around the vehicle. For this reason, since the vehicle lighting device according to the second modification controls the light intensity based on the continuous light quantity data 12, the light intensity can be controlled in real time with respect to the constantly changing light environment, The visibility as the turn signal lamp 1 and the stop lamp 13 can be sufficiently secured. In FIG. 2E, the solid line between the vertical dotted lines is the light amount data 12, and the dotted line between the vertical dotted lines is the portion that holds and outputs the previous light amount data 12.

  In the above embodiment, the optical sensor 7 is disposed between the lamp lens 4 and the reflector 5. However, in the present invention, the optical sensor 7 is disposed between the lamp housing 3 and the reflector 5, and the portion corresponding to the optical sensor 7 in the reflector 5 is made light-transmitting, so that external light transmitted through the lamp lens 4 is transmitted. You may comprise so that the permeation | transmission part of the reflector 5 may permeate | transmit and inject into the optical sensor 7. FIG.

  Moreover, in the said Example, the turn signal lamp 1 is demonstrated as a blinking type vehicle lamp. However, in the present invention, the flashing type vehicle lamp may be a lamp other than the turn signal lamp 1, such as a lamp flashing during sudden braking (during sudden braking), a hazard lamp, or the like.

  Furthermore, in the said Example, the optical sensor 7 is used as a light detection means. However, in the present invention, the light detection means may be other than the optical sensor 7, for example, an illuminance sensor, an imaging device (using image data of the imaging device), and the like.

  Furthermore, in the said Example, the stop lamp 13 is demonstrated as another vehicle lamp with respect to the turn signal lamp 1 as a blinking type vehicle lamp. However, in the present invention, as another vehicle lamp, for example, in the case of a tail signal or a turn signal lamp arranged at another position, or a front combination lamp, it is arranged at a head lamp, a fog lamp, or another position. The turn signal lamp may be one or more.

It is explanatory drawing of the turn signal lamp and control apparatus which show the Example of the illuminating device for vehicles concerning this invention. Similarly, it is a timing chart showing a process of obtaining light quantity data from a drive signal of a turn signal lamp and a detection signal from an optical sensor.

Explanation of symbols

1 Turn signal lamp (flashing vehicle lamp)
2,14 Lamp chamber 3,15 Lamp housing 4,16 Lamp lens 5,17 Reflector 6,18 Light source bulb (light source)
7 Light sensor (light detection means)
8 Control device 9 Light source drive circuit 10 Light quantity measurement circuit 11 Vehicle ambient light environment judgment circuit 12 Light quantity data 13 Stop lamp L1 External light L2 Light from light source of turn signal lamp L3 Light from stop lamp

Claims (5)

In a vehicular lighting device that controls the intensity of light emitted from a vehicular lamp corresponding to the light environment around the vehicle,
A flashing vehicle lamp that flashes and emits light from a light source to the outside,
Provided in the flashing type vehicle lamp, a light detecting means for detecting a light environment around the vehicle and outputting a detection signal;
A shielding member that shields light from another vehicle lamp separate from the flashing-type vehicle lamp from entering the light detection unit;
Of the detection signals from the light detection means, the detection signal when the flashing vehicle lamp is turned off is used as light amount data, and the flashing vehicle lamp or other vehicle based on the light amount data A control device that controls the intensity of light emitted from the lamp according to the light environment around the vehicle;
A vehicle lighting device comprising: The shielding member is composed of a light-impermeable member such as a lamp housing or a reflector of the flashing type vehicle lamp.
The vehicle lighting device according to claim 1. The controller is
A light source driving circuit for driving a flashing light source of the vehicle lamp of a flashing type and outputting a flashing driving signal;
Based on the detection signal from the light detection means and the blinking drive signal from the light source drive circuit, the detection signal when the blinking vehicle lamp is lit out of the detection signals from the light detection means is invalidated. A light amount measuring circuit that outputs a detection signal as light amount data when the vehicle lamp of the blinking type is turned off,
Based on the latest single light quantity data from the light quantity measurement circuit, the light environment around the vehicle is judged, and the flashing type light intensity corresponding to the light environment around the vehicle is passed through the light source driving circuit. A vehicle ambient light environment determination circuit for controlling a light source of a vehicle lamp or another light source of the vehicle lamp;
The vehicular illumination device according to claim 1, wherein the vehicular illumination device is configured by. The controller is
A light source driving circuit for driving a flashing light source of the vehicle lamp of a flashing type and outputting a flashing driving signal;
Based on the detection signal from the light detection means and the blinking drive signal from the light source drive circuit, the detection signal when the blinking vehicle lamp is lit out of the detection signals from the light detection means is invalidated. A light amount measuring circuit that outputs a detection signal as light amount data when the vehicle lamp of the blinking type is turned off,
Based on a plurality of light quantity data from the light quantity measurement circuit, the light environment around the vehicle is judged, and the flashing type is used for the vehicle with the light intensity corresponding to the light environment around the vehicle via the light source driving circuit. A vehicle ambient light environment determination circuit for controlling a light source of a lamp or other light source of the vehicle lamp;
The vehicular illumination device according to claim 1, wherein the vehicular illumination device is configured by. The controller is
A light source driving circuit for driving a flashing light source of the vehicle lamp of a flashing type and outputting a flashing driving signal;
Based on the detection signal from the light detection means and the blinking drive signal from the light source drive circuit, the detection signal when the blinking vehicle lamp is turned off among the detection signals from the light detection means A light quantity measurement circuit that outputs the light quantity data in a state of holding the previous light quantity data when the vehicular lamp of the flashing type is lit.
The light source of the vehicle lamp of the flashing type is determined by the light intensity corresponding to the light environment around the vehicle through the light source driving circuit by judging the light environment around the vehicle based on the light amount data from the light amount measurement circuit. Or a vehicle ambient light environment determination circuit for controlling the light source of the other vehicle lamp, and
The vehicular illumination device according to claim 1, wherein the vehicular illumination device is configured by.

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