JP2012081818A - Lighting fixture for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture for a vehicle which can effectively eliminate operation noise by a light distribution control unit contained in a lamp without complicating a constitution of the lamp.SOLUTION: A lighting fixture for a vehicle which contains the lamp 2 and light distribution control units 6, 7, 8 for controlling light distribution of the lamp 2, is equipped with a sound source control unit 4 for producing a sound with a phase opposite to operation noise for attenuating the operation noise generated in the light distribution control units 6, 7, 8. The sound source control unit 4 includes a sound generation driving unit 42 for generating a sound generation driving signal to attenuate the operation noise and a sound source element 41 for producing sound on the basis of the sound generation drive signal which is outputted from the sound generation driving unit 42.

Description

  The present invention relates to a vehicular lamp that can perform light distribution control, and more particularly to a vehicular lamp that can mute operating noise generated during light distribution control.

  In a lamp capable of controlling light distribution such as a light irradiation region and a light irradiation direction such as a headlamp or the like of an automobile, a light distribution control unit for controlling the light distribution is provided. For this reason, an operation sound is generated from the light distribution control unit that has been operated during the light distribution control, and this operation sound is sounded to the outside as noise. In order to suppress such operating noise, Patent Document 1 proposes a technique for providing a mechanism that performs a buffering operation in the drive mechanism in the light distribution control unit and suppressing the operating noise by this buffering operation.

JP-A-2005-19153

The technique of Patent Document 1 requires that the configuration of the light distribution control unit be partially changed from the existing configuration in order to mute the operation sound generated by the light distribution control unit. The construction becomes complicated and the cost of the lamp increases. In particular, in a headlamp provided with a swivel mechanism and a leveling mechanism for changing the light irradiation direction and a shade switching mechanism for changing the irradiation range, it is necessary to provide a structure for silencing each of these mechanisms. In addition, the configuration of each light distribution control unit or the entire configuration of the lamp becomes a factor of increasing complexity and size. Moreover, although the technique of patent document 1 suppresses the operation sound which generate | occur | produces in a light distribution control part, the suppression effect has a limit and it is difficult to mute an operation sound effectively.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicular lamp that can effectively mute operating noise in a light distribution control unit provided in the lamp without complicating the configuration of the lamp.

  The present invention is a vehicular lamp provided with a lamp and a light distribution control means for controlling the light distribution state of the lamp, and generates a sound for muting at least an operation sound generated by the light distribution control means. The sound source control means includes a sound generation drive means for generating a sound generation drive signal for muting the operation sound, and a sound source body that generates sound based on the sound generation drive signal output from the sound generation drive means. It is characterized by providing.

  The sound generation drive means of the present invention includes a sound generation signal storage means for storing a sound generation signal, reads out the sound generation signal from the sound generation signal storage means, generates a sound generation drive signal based on the read sound output signal, and generates a sound source body It is set as the structure made to do.

  In the present invention, in the case of a vehicular lamp provided with lighting control means, it is preferable that the lighting control means and the sound generation driving means are unitized. The sound source control means is preferably disposed in the lamp housing of the lamp. Further, it is preferable that the sound source control means emits sound when the light distribution control means is operating or when the host vehicle is traveling at a predetermined vehicle speed.

  The present invention provides a sound source control means comprising a sound generation drive means for generating a sound generation drive signal for muting an operating sound, and a sound source body for generating sound based on the sound generation drive signal output from the sound generation drive means, and a swivel mechanism In addition, it is possible to mute the operation sound generated by the light distribution control means without changing the configuration of the light distribution control means such as the leveling mechanism and the shade switching mechanism. Further, in the vehicular lamp provided with the lighting control means, it is possible to mute the operation sound generated by the lighting control means. As a result, the lighting control means and the light distribution control means are not complicated, and further, the lamp is not complicated and can be configured at low cost.

The sound generation drive means of the present invention includes a sound generation signal storage unit for storing a sound generation signal, reads the sound generation signal from the sound generation signal storage unit, generates a sound generation drive signal based on the read sound generation signal, and generates a sound source body Therefore, the operation sound can be effectively muted. Furthermore, since the sound generation drive means of the sound source control means is unitized with the lighting control means, the lamp will not be enlarged even if the sound source control means is provided. In particular, since the sound source control means is disposed in the lamp housing of the lamp, it is effective for reducing the size of the lamp. Further, the sound source control means generates a sound when the lighting control means and the light distribution control means are operating or when the host vehicle is traveling at a predetermined vehicle speed, so that the lighting control means and the light distribution control are performed. While the operation sound of the means is muted, the presence of the own vehicle can be aroused to a pedestrian or the like, which is preferable in terms of safe traffic.

The longitudinal cross-sectional view of embodiment of the vehicle lamp of this invention. The block block diagram of embodiment of a sound generation drive circuit. 6 is a flowchart for explaining a sound generation operation. The block block diagram of other embodiment of the sound generation drive circuit. 9 is a flowchart for explaining a sound generation operation according to another embodiment.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of an embodiment in which the present invention is applied to a headlamp HL of an automobile. A lamp housing 1 is composed of a container-shaped lamp body 11 having an opening on the front side and a light-transmitting cover 12 made of a transparent material attached to the front opening of the lamp body 11. A lamp unit 2 is installed. The lamp unit 2 is constituted by a projector-type lamp using the discharge bulb 20 as a light source. The discharge bulb 20 is housed in a unit housing 21 including a reflector 22, a holder 23, and a lens 24. 2 is controlled, and the light distribution state of the lamp unit 2 can be changed and controlled by a plurality of light distribution control means described later.

That is, a unitized lighting control means 3 for lighting the discharge bulb 20 is disposed as a lighting control circuit unit 3 on the inner bottom of the lamp housing 1, and the lighting built in the lighting control circuit unit 3 is provided. A control circuit 31 is electrically connected to the discharge bulb 20 by a power supply cord 32. Further, in order to control the light distribution of the lamp unit 2, the lamp unit 2 is tilted in the left-right direction by the upper and lower bearings 52 on the tilting frame 5 supported by the support bolt 51 in the lamp housing 1 and tiltable in the vertical direction. Supported as possible. A swivel mechanism 6 for tilting the lamp unit 2 in the left-right direction and swiveling the lamp optical axis Lx in the left-right direction is attached to the lower portion of the tilt frame 5. On the other hand, the lamp body 11 is provided with a leveling mechanism 7 for tilting the tilting frame 5 in the vertical direction. The lamp unit 2 includes a variable shade 25 for switching a light distribution pattern of light to be irradiated while blocking a part of the light emitted from the discharge bulb 20. The variable shade 25 is driven. Thus, a shade switching mechanism 8 for switching the light shielding state is provided in a part of the lamp unit 2.

In the above configuration, the lighting control circuit unit 3 is a lighting control means in the present invention, and each of the swivel mechanism 6, the leveling mechanism 7 and the shade switching mechanism 8 constitutes a light distribution control means in the present invention. . The projector-type lamp unit 2, the swivel mechanism 6, the leveling mechanism 7, the shade switching mechanism 8, and the lighting control circuit unit 3 use existing units and mechanisms, and these configurations are already widely known. Here, detailed description thereof is omitted.

  The sound source control means 4 of the present invention is disposed on a part of the lamp housing 1, here on the inner bottom surface of the lamp body 11. As will be described in detail later, the sound source control means 4 is composed of a sound source body 41 and a sound generation drive means 42, and the sound source body 41 (herein it is composed of a speaker and henceforth referred to as a sound source speaker) is a lamp body. 11 is integrally attached to the inner surface of a region near the front opening. The sound source speaker 41 is configured to generate a sound having a required waveform based on an input electric signal, and to output the generated sound toward the external region as well as the internal region of the lamp housing 1. . Further, the sound generation drive means 42 for generating the sound source speaker 41 is configured as a sound generation drive circuit in which electronic parts are assembled on a circuit board, and is integrally incorporated in the lighting control circuit unit 3 to emit the lighting. It is unitized with the control circuit 31 and is electrically connected to the sound source speaker 41 by an electric cord 43. The sound source speaker 41 and the sound generation drive circuit 42, that is, the sound source control means 4 are disposed behind an extension (pseudo-reflector) 13 disposed in the lamp housing 1. The light is prevented from being exposed to the outside through the light cover 12, and the appearance of the lamp is not deteriorated.

  The configuration of the sound source speaker 41 is not particularly limited as long as the sound source speaker 41 performs a sound generation operation based on an electric signal, but here, a normal sound generating sound at a pitch corresponding to the frequency of the electric signal to be energized is used. Audio speakers are used. For example, a loudspeaker having a configuration in which a voice coil is vibrated by an energized electric signal and a sound is generated from a horn connected to the voice coil.

  As shown in FIG. 2, the sounding drive circuit 42 stores at least one different sounding signal output to the sound source speaker 41 and a sounding signal storage unit 421 that stores the sounding signal storage unit 421. A sounding signal selection unit 422 that selects a sounding signal being output, and a sounding drive signal output unit 423 that outputs a sounding drive signal that causes the sound source speaker 41 to perform a sounding operation based on the selected sounding signal.

  Here, the sound signal storage unit 421 stores at least four kinds of sound signals. The first sound generation signal H1 is a sound generation signal corresponding to the operation sound generated by the swivel mechanism 6 when the swivel mechanism 6 is operated. This sound generation signal is a waveform signal that is completely opposite in phase to the operation sound generated by the swivel mechanism 6. For example, the operation sound generated when the swivel mechanism 6 is actually operated is detected as an electrical signal by a voice microphone or the like. The detected electric signal is obtained by inversion processing by a signal inversion circuit. The second sound generation signal H2 is a sound generation signal corresponding to the operation sound generated when the leveling mechanism 7 operates, and the third sound generation signal H3 corresponds to the operation sound generated when the shade switching mechanism 8 is operated. It is a pronunciation signal. The fourth sound generation signal H4 is a sound generation signal corresponding to an operation sound generated when the lighting control circuit 31 in the lighting control circuit unit 3 is operated. Similarly to the first sound generation signal H1, these second to fourth sound generation signals H2 to H4 also detect operation sounds when each of them actually operates, and store them as waveform signals having phases opposite to the detected operation sound. . Each of the sound generation signals H1 to H4 is stored as a signal having a predetermined unit time length.

  The sounding signal selection unit 422 is electrically connected to a lighting switch ST and a light distribution switch SH that are manually operated by a vehicle occupant. When the lighting switch ST is operated and the headlamp HL is turned on, And the state when the light distribution switch SH is operated and the light distribution control is executed is detected. Here, the lighting state is detected when the lighting switch ST is turned on. Further, by switching the light distribution switch SH, a swivel control state in which the swivel mechanism 6 is operated, a leveling control state in which the leveling mechanism 7 is operated, and a shade switching state in which the shade switching mechanism 8 is operated are detected. Then, the sound generation signal selection unit 422 selects and outputs the first to fourth sound generation signals H1 to H4 described above corresponding to the detected lighting state and light distribution control state from the sound generation signal storage unit 421. When the lighting state or light distribution control state detected at this time continues beyond the unit time stored in the sound generation signal storage unit 421, the sound generation signal selection unit 422 continues while this state continues. The selected sound generation signal is repeatedly output continuously.

  The sound generation drive signal output unit 423 amplifies the sound generation signal selected by the sound generation signal selection unit 422 to a signal level that can be generated by the sound source speaker 41 with a desired level sound, and outputs it as a sound generation drive signal. At this time, while the sound generation signal selection unit 422 selects the sound generation signal, the read sound signal of the unit time is repeatedly output, so the sound generation drive signal output unit 423 generates the sound generation drive signal based on the sound generation signal. Is output continuously.

  In the headlamp HL having the above configuration, the lighting control circuit 31 can be operated by operating the lighting switch ST to light the lamp unit 2, and when the light is lit, the swivel mechanism 6 is further operated by switching the light distribution switch SH. Then, the lamp unit 2 is tilted left and right to control the deflection of the lamp optical axis Lx left and right. Alternatively, the leveling mechanism 7 is operated to tilt the tilting frame 5 up and down to tilt the lamp unit 2 up and down integrally, and to control the deflection of the lamp optical axis Lx up and down. Furthermore, the shade switching mechanism 8 is operated to switch the shade 25 in the lamp unit 2, and the light distribution pattern of the light emitted from the lamp unit 2 is switched. When performing these lighting control and light distribution control, the lighting control circuit 31 generates an operation sound generated when generating a high voltage for discharging for discharging the discharge bulb 20, and the swivel mechanism 6, the leveling mechanism 7, When the shade switching mechanism 8 operates, operation sounds such as motor sounds and gear drive sounds are generated in the respective mechanisms. These operating sounds are emitted from the lamp housing 1 to the outside and are recognized as noise by the vehicle occupant.

  At this time, as shown in the flowchart of FIG. 3, the sounding signal selection unit 422 of the sounding drive circuit 42 detects the state of the lighting switch ST (S101), and immediately selects the fourth sounding signal H4 when the lighting switch ST is on. And output (S102). When the lighting switch ST is off, the subsequent processing is stopped. After selecting and outputting the fourth sound generation signal H4, it is determined whether or not the light distribution control is performed from the state of the light distribution switch SH (S103), and the detected first when the light distribution control is not performed. The four sound generation signals H4 are output to the sound generation drive signal output section 423, and the sound generation drive signal output section 423 amplifies the sound generation signal as a sound generation drive signal (S108) and outputs it to the sound source speaker 41 to generate sound (S109). At this time, the sound generation signal selection unit 422 selects and outputs the fourth sound generation signal H4 in synchronization with the timing when the lighting switch ST is turned on, so that the sound generation drive signal output unit 423 operates in the lighting control circuit 31. It is possible to generate a sound generation drive signal having an opposite phase in synchronization with the sound and output a sound based on the sound generation drive signal to the sound source speaker 41. As a result, the sound source speaker 41 generates a sound having a phase opposite to that of the operating sound, and the sound having the opposite phase is interfered with the operating sound generated by the lighting control circuit 31 to cancel both sounds. The sound will be muted. In addition, the technique which silences an operation sound with the sound of a reverse phase is described also in Unexamined-Japanese-Patent No. 2010-174771, for example.

  When it is determined in step S103 that light distribution control is being performed, for example, when the light distribution switch SH is switched to swivel control, the sound generation signal selection unit 422 additionally selects the first sound generation signal H1 ( S105). As a result, the fourth sound generation signal H4 and the first sound generation signal H1 are simultaneously output to the sound generation drive signal output unit 423, and the sound generation drive signal output unit 423 combines the sound generation signals and inverts and amplifies the sound generation drive signal. Is generated and output. Thereby, the sound source speaker 41 generates a sound having a phase opposite to that of the operation sound generated by the lighting control circuit 31 and the operation sound generated by the swivel mechanism 6. The operation sound generated in each swivel mechanism 6 is muted. The same applies when it is determined in step S104 that the light distribution switch SH has been switched to leveling control or shade switching control, and the sounding signal selection unit 422 adds the second sounding signal H2 in addition to the fourth sounding signal H4. Alternatively, the third sound generation signal H3 is selected and output 8S106, S107), a sound generation drive signal is generated and output by the sound generation drive signal output unit 423 based on the output sound generation signal, and the sound source speaker 41 generates a sound. It becomes possible to mute the operating sound of the leveling mechanism 7 and the shade switching mechanism 8 together with the operating sound in the lighting control circuit 31. In this case as well, it is possible to simultaneously select the first to third sound generation signals and output the sound generation drive signal.

  As described above, in the embodiment, only the sound source control means 4 is provided in the headlamp HL, and the operation sound of the lighting control means 3 is generated by the light distribution control means such as the swivel mechanism 6, the leveling mechanism 7, and the shade switching mechanism 8. The operating sound can be muted. In particular, since the mute is canceled by canceling the operation sound with a sound having a phase opposite to that of the operation sound, a high mute effect can be obtained. Further, the sound generation drive circuit 42 of the sound source control means 4 is unitized together with the lighting control circuit 31, and the sound source speaker 41 is a space region existing in the lamp housing 1 and is not exposed to the outside by the extension 13 or the like. Since the headlamp HL is disposed at the position, the headlamp HL does not increase in size, and the operation noise generated by each of the swivel mechanism 6, the leveling mechanism 7 and the shade switching mechanism 8 is muted without any change. In addition, existing mechanisms can be used as they are, and each mechanism does not become complicated and large, and can be configured at low cost.

  Here, in the embodiment, the sound source body 41 of the sound source control means 4 of the present invention is configured by a sound source speaker, but the sound source body 41 may be configured by a vibrating body. That is, although not shown, the lamp body 11 in the lamp housing 1 is integrally attached with a vibrating body that vibrates in response to a sounding drive signal from the sounding drive circuit 42, for example, a magnetostrictive actuator that vibrates in response to the sounding drive signal. . By using this magnetostrictive actuator, when the sound generation drive signal from the sound generation drive circuit 42 is input, the magnetostrictive actuator is vibrated at a frequency corresponding to the frequency of the sound generation drive signal, and is integrated with the lamp body 11. Vibrate. As a result, the lamp body 11 or the translucent cover 12 and the extension 13 attached to the lamp body 11 are subjected to surface vibration, and the lamp housing 1 serves as a sound source. For this reason, the sound generated in the lamp housing 1 cancels out the operation sounds generated by the light distribution control means such as the lighting control means 3, the swivel mechanism 6, the leveling mechanism 7, the shade switching mechanism 8, and the like. It will be. Since this type of vibrating body can be configured in a smaller size and at a lower cost than a sound source speaker, it is advantageous for further downsizing and cost reduction of the headlamp HL.

  FIG. 4 is a configuration diagram of the sounding drive circuit 42A of the second embodiment, and the same reference numerals are given to the parts equivalent to those of the first embodiment shown in FIG. The second embodiment is applied to a vehicle capable of running with a power source other than an engine such as a hybrid vehicle or an electric vehicle. Here, in the sound generation signal storage unit 421 of the sound generation drive circuit 42A, in addition to the first to fourth sound generation signals H1 to H4 of the first embodiment, an arbitrary pitch set in advance as the fifth sound generation signal H5, or It stores a sound signal for generating a caution sound composed of timbre sounds. This arousing sound is set as a sounding signal in a sound range that can be heard by humans, that is, drivers of light vehicles such as pedestrians and bicycles. In addition, the sound generation signal selection unit 422 selects the sound generation signal by detecting the state of the lighting switch ST and the light distribution switch SH as in the first embodiment, and detects the vehicle speed from the vehicle speed sensor SV that detects the vehicle speed of the host vehicle. Thus, the fifth sound generation signal H5, that is, the evoked sound signal can be selected.

  According to the second embodiment, as shown in the flowchart of FIG. 5, the sound generation signal selection unit 422 selects the first to fourth sound generation signals H1 to H4 based on the states of the lighting switch ST and the light distribution switch SH, As in the first embodiment, sound is generated from the sound generator, that is, the sound source speaker 41 based on the selected sound generation signal, or the vibration body is vibrated to generate sound from the lamp housing 1. In addition, in the second embodiment, prior to the flow, the vehicle speed of the host vehicle detected by the vehicle speed sensor SV is determined (S201), and when the vehicle speed is in a predetermined region, it is lower than 20 km / h here. When the determination is made, the sound signal selection unit 422 selects the fifth sound signal H5 (S205). When the fifth sound generation signal H5 is selected and output, the sound generation drive signal output unit 423 outputs a sound generation drive signal corresponding to the fifth sound generation signal H5 and drives the sound source speaker 41 or the vibrating body. As a result, the sound source speaker 41 and the lamp housing 1 are sounded at a predetermined height and tone color, and this sound is output toward the periphery of the host vehicle.

A vehicle such as a hybrid vehicle or an electric vehicle to which the second embodiment is applied can travel in a quiet state because no engine noise is generated, and the traveling sound of these vehicles is particularly walking when traveling at low speeds in urban areas. It is less noticeable by people and light vehicles, causing problems in terms of safe traffic. Therefore, it is possible for a pedestrian or a light vehicle to recognize its own vehicle by generating an audible sound based on the fifth sound generation signal H5 from the sound source speaker 41 or the lamp housing 1 when traveling in an urban area at a speed lower than 20 km / h. Therefore, safe traffic will be secured.

  When the vehicle speed is 20 km / h or higher in step S201, the process proceeds to step S202. When the lighting switch ST is turned on as in the first embodiment (S202), the fourth sound generation signal H4 is selected (S203), A sound generation drive signal is output from the sound generation drive signal output unit 423 (S210), and the sound source speaker 41 is sounded (S211). When the light distribution switch SH is turned on (S204), the light distribution control state is determined (S204), and the first to third sound generation signals H1 to H3 are selected corresponding to the determined light distribution control ( S207, S208, S209), a sounding drive signal is output from the sounding drive signal output unit 423 (S210), and the sound source speaker 41 is sounded (S211).

  In the second embodiment, the present invention can be realized only by partially changing the configuration of the sound generation signal storage unit 421 and the sound generation signal selection unit 422 of the first embodiment. It is possible to mute the operation sound generated in the lighting control means 3 and the operation sound generated in the light distribution control means such as the swivel mechanism 6, the leveling mechanism 7, and the shade switching mechanism 8 simply by disposing them. The recognizability of the own vehicle with respect to the light vehicle can be improved, and even in this case, the configuration of the headlamp does not become complicated and large, and can be configured at low cost.

  The sound source control means 4 of the first and second embodiments is configured to mute the operation sound generated by the lighting control means 3 for lighting the lamp unit 2. In many cases, the level is lower than the operation sound generated by the mechanisms 6, 7, and 8 of the light distribution control means, and there is a case where it is less necessary to mute the operation sound of the lighting control means 3. In this case, the present invention is effective even if it is configured to mute at least the operation sound generated by the light distribution control means. Further, the present invention is a system that controls the swivel mechanism according to the steering of the automobile, a system that controls the leveling mechanism according to the change in the height of the automobile, and when an oncoming vehicle is detected by an imaging camera or the like. It can also be applied to automobiles equipped with a system that controls the tracking of light distribution by switching shades, and can also be configured to perform a silencing operation following the operation of these swivel mechanisms, leveling mechanisms, and shade switching mechanisms. is there.

  Here, the muffling effect in the present invention is not necessarily limited to completely muffing the operation sound generated in the lamp, and the sound intensity is reduced (sound level) to suppress or weaken the sound. Including things. Therefore, the sound signal stored in the sound signal storage unit is not necessarily limited to a waveform signal that is completely opposite in phase to the operating sound, and is configured as a waveform signal that can suppress a high-amplitude signal component in the operating sound. It may be what was done.

  In addition, if the sounding sound signal that is the fifth sounding signal stored in the sounding signal storage unit 421 is a sound that sounds a sound that arouses the presence of the vehicle by a pedestrian or the like, it is close to a certain frequency signal or engine sound. A sound signal for sound generation may be used. Or you may make it utilize either the 1st thru | or 4th sound generation signal as an arousal sound signal, without memorize | storing an arousal sound signal independently.

  The present invention can be applied to a vehicular lamp in which operating noise is generated in various mechanisms that operate when changing the light distribution of a vehicular lamp such as a headlamp.

DESCRIPTION OF SYMBOLS 1 Lamp housing 2 Lamp unit 3 Lighting control means 4 Sound source control means 5 Tilt frame 6 Swiveling mechanism 7 Leveling mechanism 8 Shade switching mechanism 11 Lamp body 12 Translucent cover 13 Extension 20 Discharge bulb 25 Shade 31 Lighting control circuit 41 Sound source body (sound source Speaker, vibrating body)
42, 42A Sound generation drive circuit 421 Sound generation signal storage section 422 Sound generation signal selection section 423 Sound generation drive signal output section HL Headlamp ST Lighting switch SH Light distribution switch SV Vehicle speed sensor

Claims (5)

  A vehicle lamp comprising a lamp and a light distribution control means for controlling a light distribution state of the lamp, and a sound source control for generating a sound for muting at least an operation sound generated by the light distribution control means The sound source control means includes a sound generation drive means for generating a sound generation drive signal for muting the operating sound, and a sound source body that generates sound based on the sound generation drive signal output from the sound generation drive means A vehicular lamp characterized by the above.   The sounding drive means includes a sounding signal storage unit for storing a sounding signal, reads the sounding signal from the sounding signal storage unit, generates the sounding driving signal based on the read sounding signal, and causes the sound source body to sound The vehicular lamp according to claim 1.   3. The vehicular lamp according to claim 1, further comprising a lighting control means for controlling a lighting state of the lamp, wherein the sounding driving means is unitized with the lighting control means. The vehicular lamp according to any one of claims 1 to 3, wherein the sound source control means is arranged in a lamp housing of the lamp. 5. The sound source control means generates sound when at least one of a lighting control means and a light distribution control means is operating, or when the host vehicle is traveling at a predetermined vehicle speed. The vehicle lamp as described in 2.

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