JP2017121932A - Lighting appliance for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting appliance for a vehicle which is improved in a degree of freedom related to a direction and a range of radiated light, and can be used as a drawing lamp unit for displaying a figure, a mark and a character.SOLUTION: A lamp unit 2 comprises: a light source 7 for emitting light; a rotating reflector 8 which rotates with a rotating shaft A as a pivot, and has a plurality of reflection faces 8a, 8b, 8c, 8d, 8e and 8f for reflecting the light which is emitted from the light source; and a fixed reflector 9 to which the light reflected by a plurality of the reflection faces is made incident, and which controls the incident light. Angles with respect to rotating axes of a plurality of the reflection faces are different from one another, an incident position of the light which is made incident to the fixed reflector is changed according to a rotation position of the rotating reflector, and in a state that the light-on/off of the light source is controlled according to the rotation position of the rotating reflector, a figure, a mark and a character are drawn by a plurality of pieces of spot light which are obtained by rotating the rotation reflector.SELECTED DRAWING: Figure 15

Description

  The present invention relates to a technical field of a vehicular lamp having a rotating reflector having a reflecting surface and a light control member that controls light reflected by the rotating reflector.

Special table 2008-539537 gazette

  Some vehicle lamps include, for example, a lamp unit having a light source disposed inside a lamp outer casing constituted by a cover and a lamp housing.

  Some of such lamp units are configured such that light emitted from a light source is reflected by a rotating reflector. As such a configuration, for example, there is a configuration in which a polygon wheel mirror that can be rotated about a rotation axis and has a plurality of mirror surfaces (reflection surfaces) is provided as a rotation reflector (see, for example, Patent Document 1).

  In the vehicular lamp described in Patent Document 1, since the light emitted from the light source is emitted to each mirror surface as the polygon wheel mirror rotates, the light reflected from the mirror surface and irradiated. Direction and range can be changed.

  However, in the vehicular lamp described in Patent Document 1, since a plurality of reflecting surfaces that reflect light are formed in parallel to the rotation axis, the light is irradiated when the rotating reflector is rotated. The direction and range of light are limited, and there is a problem that these degrees of freedom are low.

  Therefore, an object of the vehicular lamp of the present invention is to improve the degree of freedom related to the direction and range of light reflected and irradiated by a rotating reflector.

The vehicular lamp according to the present invention includes a lamp unit, and the lamp unit includes a light source that emits light, and a rotation having a plurality of reflecting surfaces that rotate around a rotation axis and reflect the light emitted from the light source. A reflector and a fixed reflector that controls the incident light that is incident on the light reflected by the plurality of reflecting surfaces, and the angles of the plurality of reflecting surfaces with respect to the rotation axis are different from each other and are incident on the fixed reflector. When the light incident position is changed according to the rotational position of the rotary reflector, and the turning on / off of the light source is controlled according to the rotational position of the rotary reflector, the light reflector is obtained by rotating the rotary reflector. A figure, a symbol, or a character is drawn by a plurality of spot-like lights .

Thereby, since each light reflected by each reflecting surface of the rotating reflector is incident on a different position of the light control member, the direction and range of the light reflected and irradiated by the rotating reflector is not limited, and these The degree of freedom is improved.

Furthermore, since a figure, a symbol, or a character is displayed by a plurality of dot-like lights obtained by rotating the rotary reflector, it is used as a lamp unit for drawing.

According to the present invention, the incident position of the light angle relative to the axis of rotation of the plurality of reflecting surfaces is incident on the fixed reflector differs respectively are changed according to the rotational position of the rotary reflector, the rotation off point of the light source is of the rotary reflector in a state of being controlled in accordance with the position, irradiating the rotating reflector by a plurality of point-like light obtained by rotating, because is to draw a figure or symbol or character, when the rotating reflector is rotated The direction and range of the emitted light are not limited, and it is possible to improve the degree of freedom related to the direction and range of the light reflected and irradiated by the rotary reflector.
Moreover, since a figure, a symbol, or a character is displayed by a plurality of dot-like lights obtained by rotating the rotary reflector, it is used as a lamp unit for drawing.

2 to 15 show an embodiment of a vehicular lamp according to the present invention, and this figure is a schematic front view of the vehicular lamp. It is a schematic longitudinal cross-sectional view of the vehicle lamp. It is a perspective view of a lamp unit. It is a schematic side view which shows the part which shows the path | route of the light reflected by the 1st reflective surface in cross section. It is a schematic side view which shows the part which shows the path | route of the light reflected by the 2nd reflective surface in cross section. It is a schematic side view which shows the part which shows the path | route of the light reflected by the 3rd reflective surface in cross section. It is a schematic side view which shows the part which shows the path | route of the light reflected by the 4th reflective surface in cross section. It is a schematic side view which shows the part which shows the path | route of the light reflected by the 5th reflective surface in cross section. It is a schematic side view which shows the part which shows the path | route of the light reflected by the 6th reflective surface in cross section. It is a schematic front view which shows the path | route of light when a 1st reflective surface is inclined to the right side. It is a schematic front view which shows the path | route of light in case the 1st reflective surface has faced the downward direction. It is a schematic front view which shows the path | route of light when a 1st reflective surface is inclined to the left side. It is a schematic diagram which shows the light irradiated to an irradiation area | region when a light source lights. It is a schematic diagram which shows the light irradiated to an irradiation area | region when a light source turns on and off. It is a schematic diagram which shows the light irradiated to an irradiation area | region when the timing of turning on and off of a light source is controlled.

  EMBODIMENT OF THE INVENTION Below, the form for implementing the vehicle lamp of this invention is demonstrated with reference to an accompanying drawing.

  The vehicular lamp 1 includes a first lamp unit 2, a second lamp unit 100, and a third lamp unit 200 (see FIGS. 1 and 2). The first lamp unit 2 is provided, for example, as a drawing lamp unit, the second lamp unit 100 is provided, for example, as a high beam lamp unit, and the third lamp unit 200 is provided, for example, for a low beam. It is provided as a lamp unit. In the vehicular lamp 1, the first lamp unit 2 may be provided as a low beam lamp unit, or may be provided as a drawing and high beam lamp unit. In these cases, the second lamp unit 100 or the third lamp unit 200 is not provided.

  In the vehicular lamp 1, an interior of a lamp outer casing 5 formed by a lamp body 3 opened on one side and a cover 4 attached to an end of the lamp body 3 on the opening side is formed as a lamp chamber 6. . In the lamp chamber 6, a first lamp unit 2, a second lamp unit 100, and a third lamp unit 200 are arranged apart from each other in the left-right direction.

  The first lamp unit 2, the second lamp unit 100, and the third lamp unit 200 are each supported inside the lamp casing 5 by members not shown.

  The first lamp unit 2 includes a light source 7, a rotating reflector 8, and a light control member 9 (see FIGS. 2 and 3), and is supported inside the lamp outer casing 5 by members not shown.

  As the light source 7, for example, a semiconductor laser (LD: Laser Diode) or a light emitting diode (LED: Light Emitting Diode) is used. The light source 7 emits light upward toward the rotating reflector 8, and is turned on or off according to the rotating operation of the rotating reflector 8.

  The rotary reflector 8 is disposed above the light source 7. The rotary reflector 8 is made of a thin plate member, for example, a substantially regular hexagonal plate, and the thickness direction is the front-rear direction. The rotary reflector 8 is rotated about a rotation axis A extending in the front-rear direction by a rotation drive mechanism (not shown). .

  The outer peripheral surfaces of the rotary reflector 8 are a first reflecting surface 8a, a second reflecting surface 8b, a third reflecting surface 8c, a fourth reflecting surface 8d, a fifth reflecting surface 8e, and a sixth reflecting surface 8f, respectively. Each of the formed light emitted from the light source 7 is reflected in a predetermined direction.

  Each reflective surface 8a, 8b, 8c, 8d, 8e, 8f is positioned in this order in the circumferential direction.

  The reflecting surfaces 8a, 8b, 8c, 8d, 8e, and 8f are inclined at different angles with respect to the rotation axis A (see FIGS. 4 to 9). The inclination angle of the first reflection surface 8a with respect to the rotation axis A is the smallest, and the inclination angle of the sixth reflection surface 8f with respect to the rotation axis A is the largest, and the second reflection surface 8b, the third reflection surface 8c, and the fourth reflection surface. The inclination angle with respect to the rotation axis A is increased in the order of the reflective surface 8d and the fifth reflective surface 8e.

  The light emitted from the light source 7 is reflected by one of the reflecting surfaces 8a, 8b, 8c, 8d, 8e, and 8f according to the rotational position of the rotating reflector 8, and the reflecting surfaces 8a, 8b, 8c, 8d, and 8e are reflected. , 8f is incident on each position of the light control member 9, respectively.

  The light control member 9 is disposed in front of or behind the light source 7 and is disposed below the rotating reflector 8. In the following description, it is assumed that the light control member 9 is disposed in front of the light source 7.

  The light control member 9 has a front surface that faces obliquely upward, and this surface is formed as a control surface 10 (see FIG. 3). The light control member 9 controls the light reflected by the rotary reflector 8 so as to narrow the range of the emission angle in the circumferential direction of the rotary reflector 8.

  The control surface 10 has six horizontally long regions formed in order from the upper side, and each of these regions sequentially has a first control region 10a, a second control region 10b, a third control region 10c, and a fourth control region. It is formed as a control region 10d, a fifth control region 10e, and a sixth control region 10f. Note that the dotted lines given to the control surface 10 in FIG. 3 are given for convenience in order to facilitate understanding of the positions of the control areas 10a, 10b, 10c, 10d, 10e, and 10f.

  In the first lamp unit 2 configured as described above, when light is emitted from the light source 7, the emitted light is reflected by any one of the reflecting surfaces 8 a, 8 b, 8 c, depending on the rotational position of the rotating reflector 8. Reflected by 8d, 8e, and 8f (see FIGS. 3 to 9). The light reflected by the reflecting surfaces 8a, 8b, 8c, 8d, 8e, and 8f is incident on the control regions 10a, 10b, 10c, 10d, 10e, and 10f as reflected light E (E1 to E6) to the control surface 10, respectively. Then, the light is reflected by the control regions 10a, 10b, 10c, 10d, 10e, and 10f and irradiated forward as irradiation light R (R1 to R6).

  Specifically, the light reflected by the first reflecting surface 8a is incident on the first control region 10a as reflected light E1, reflected by the first control region 10a, and irradiated forward as irradiation light R1. (See FIGS. 3 and 4). The light reflected by the second reflecting surface 8b enters the second control region 10b as reflected light E2, is reflected by the second control region 10b, and is irradiated forward as irradiation light R2 (FIG. 5). reference). The light reflected by the third reflecting surface 8c enters the third control region 10c as reflected light E3, is reflected by the third control region 10c, and is irradiated forward as irradiation light R3 (FIG. 6). reference). The light reflected by the fourth reflecting surface 8d enters the fourth control region 10d as reflected light E4, is reflected by the fourth control region 10d, and is irradiated forward as irradiation light R4 (FIG. 7). reference). The light reflected by the fifth reflecting surface 8e enters the fifth control region 10e as reflected light E5, is reflected by the fifth control region 10e, and is irradiated forward as irradiation light R5 (FIG. 8). reference). The light reflected by the sixth reflecting surface 8f enters the sixth control region 10f as reflected light E6, is reflected by the sixth control region 10f, and is irradiated forward as irradiation light R6 (FIG. 9). reference).

  As described above, when light is emitted from the light source 7 toward the rotary reflector 8, the rotary reflector 8 is rotated about the rotation axis A, and thus each of the reflecting surfaces 8a, 8b, 8c, 8d, 8e, The direction of 8f with respect to the light source 7 is gradually changed. Therefore, the light incident on the reflecting surfaces 8a, 8b, 8c, 8d, 8e, and 8f is reflected at an angle corresponding to the incident angle, and is different in the same control regions 10a, 10b, 10c, 10d, 10e, and 10f. Incident on the position. That is, the reflected lights E1, E2, E3, E4, E5, and E6 are incident on the control regions 10a, 10b, 10c, 10d, 10e, and 10f continuously or intermittently in the left-right direction (FIGS. 10 to 12). reference).

  For example, when the first reflecting surface 8a is inclined to the right side, the reflected light E1 is incident on the right side portion of the first control region 10a (see FIG. 10). When the first reflecting surface 8a faces downward without being inclined, the reflected light E1 is incident on the central portion in the left-right direction of the first control region 10a (see FIG. 11). When the first reflecting surface 8a is inclined to the left side, the reflected light E1 is incident on the left side portion of the first control region 10a (see FIG. 12).

  Although illustration is omitted, each of the reflection surfaces 8b, 8c, 8d, 8e, and 8f is reflected on the reflection lights E2, E3, E4, E5, and E6 that are similarly reflected by the reflection surfaces 8b, 8c, 8d, 8e, and 8f. When tilted to the right, when facing downward, or when tilted to the left, the right part of the control regions 10b, 10c, 10d, 10e, 10f, the central part in the left-right direction, and the left It is incident on the part.

  Each irradiation light R1, R2, R3, R4, R5, R6 is irradiated forward in a substantially parallel state, and is condensed, for example, in an irradiation region X located below the horizontal line H in the irradiation direction (front). Thus, the light control member 9 is controlled (see FIGS. 13 to 15).

  For example, the horizontal lines S1, S2, S3, S4, S5, and S6 shown in FIG. 13 indicate that the rotating reflector 8 is rotated once from the first reflecting surface 8a to the sixth reflecting surface 8f when the light source 7 is turned on. In this case, the irradiation light R1, R2, R3, R4, R5, and R6 are irradiated in this order.

  In the vehicular lamp 1, the rotating reflector 8 is continuously rotated at a high speed, and the above-described scanning line light is repeatedly and continuously irradiated onto the irradiation region X in a very short time. Therefore, the scanning line-shaped light irradiated to the irradiation region X is visually recognized as an afterimage, and a certain amount of light is irradiated to the irradiation region X in a pseudo continuous manner. When the rotating reflector 8 is rotated at a high speed while the light source 7 is turned on, the first lamp unit 2 is used as, for example, a low beam lamp unit or a high beam lamp unit. Further, when the light source 7 is turned on, the first lamp unit 2 may be used as various marker lamp units such as a stop lamp, a tail lamp, and a cornering lamp.

  On the other hand, when the rotating reflector 8 is rotated once from the first reflecting surface 8a to the sixth reflecting surface 8f in a state where the light source 7 is turned on and off, a plurality of point-like lights are intermittently applied to the irradiation region X. Is irradiated (see FIG. 14). The horizontal lines S1, S2, S3, S4, S5, and S6 (see the six dotted line frames in FIG. 14) as a set of a plurality of dot-like lights shown in FIG. 14 are in this order, and each irradiation light R1, R2, R3, The state in which R4, R5, and R6 are irradiated is shown.

  In the vehicular lamp 1, the turning of the light reflector 7 is controlled in accordance with the rotational position of the rotating reflector 8, and the rotating reflector 8 is continuously rotated at a high speed. Is irradiated to the irradiation region X in a very short time. Therefore, as shown in FIG. 15, a set of a plurality of point-like lights irradiated on the irradiation region X at an arbitrary timing is visually recognized as an afterimage of a predetermined figure, symbol, character, or the like, for example, the arrow symbol P. When the rotating reflector 8 is rotated at a high speed in a state in which the timing of turning on and off the light source 7 is controlled, the first lamp unit 2 displays a figure, a symbol, a character, and the like. Used as These figures, symbols, and characters are visually recognized as signs by, for example, vehicle drivers and pedestrians.

  As described above, in the vehicular lamp 1, the first reflecting surface 8a, the second reflecting surface 8b, the third reflecting surface 8c, the fourth reflecting surface 8d, the fifth reflecting surface 8e, The angle of the sixth reflecting surface 8 f with respect to the rotation axis A is different, and the incident position of the reflected light E (E 1 to E 6) incident on the light control member 9 is changed according to the rotational position of the rotary reflector 8.

  Therefore, the direction and the range of the reflected light E (E1 to E6) are not limited when the rotating reflector 8 that reflects the light emitted from the light source 7 is rotated, and the light is reflected and irradiated by the rotating reflector 8. It is possible to improve the degree of freedom regarding the direction and range of light.

  In the vehicular lamp 1, the light source 7 is turned on / off according to the rotational position of the rotary reflector 8, so that figures, symbols, characters, etc. can be drawn in the light irradiation direction. Attention can be given to pedestrians and the like to improve safety when the vehicle is running.

  Furthermore, in the vehicular lamp 1, by using a fixed reflector as the light control member 9, it is possible to easily control light with a simple configuration. The light control member 9 may be a lens member that internally reflects light. Even when a lens member is used as the light control member 9, the same effect as that obtained when a fixed reflector is used is produced.

  Further, as described above, the reflected light E (E1 to E6) incident by the light control member 9 is controlled to be condensed below the horizontal line H as the irradiation light R (R1 to R6). Further, it is possible to prevent the generation of dazzling light for the driver of the preceding vehicle or the oncoming vehicle after irradiating light to a necessary range according to the application.

  In addition, in the vehicular lamp 1, the light reflected by the respective reflecting surfaces 8 a, 8 b, 8 c, 8 d, 8 e, 8 f and controlled by the light control member 9 to irradiate the irradiation region X is irradiated with the irradiation region X Since each of the reflecting surfaces 8a, 8b, 8c, 8d, 8e, and 8f is linear, it is possible to easily control the light irradiation direction and irradiation range and the lighting on / off.

  In addition, although the example in which the rotary reflector 8 has the six reflective surfaces 8a, 8b, 8c, 8d, 8e, and 8f was shown above, the number of the reflective surfaces formed in the rotary reflector is six. There is no limitation, and any number may be used as long as it is plural. In this case, when the number of reflecting surfaces is small, the range of the reflected light emission angle in the circumferential direction of the rotating reflector 8 is widened, and when the number of reflecting surfaces is large, the reflected light is emitted in the circumferential direction of the rotating reflector 8. Although the range of the angle is narrowed, the size of the irradiation region X can be controlled by using the light control member 9.

  In addition, when the number of reflecting surfaces of the rotating reflector 8 is small, the continuous portions (corner portions) between the reflecting surfaces of the rotating reflector 8 are reduced, so that light emitted from the light source 7 and reflected by the rotating reflector 8 is reflected. Loss is reduced, the light irradiation efficiency to the irradiation region X can be increased, and the resolution in the circumferential direction can also be increased. Therefore, the number of reflecting surfaces formed on the rotating reflector 8 may be appropriately determined according to the required light irradiation range and resolution, the use of the lamp unit, and the like.

  Moreover, although the example in which light is irradiated below the horizontal line H has been described above, the light control member 9 controls the light so that the light is irradiated above and below the horizontal line H or above the horizontal line H. May be. In this case, the vehicular lamp 1 is used as a high beam lamp unit or an overhead lamp lamp unit that irradiates a sign or the like located above.

DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp, 2 ... Lamp unit, 7 ... Light source, 8 ... Rotating reflector, 8a ... 1st reflective surface, 8b ... 2nd reflective surface, 8c ... 3rd reflective surface, 8d ... 4th reflection Surface, 8e ... fifth reflecting surface, 8f ... sixth reflecting surface, 9 ... fixed reflector, A ... rotating shaft

Claims (1)

A vehicle lamp equipped with a lamp unit,
The lamp unit is
A light source that emits light;
A rotating reflector having a plurality of reflecting surfaces that are rotated about a rotation axis and reflect light emitted from the light source;
A fixed reflector that controls the incident light that is incident on the light reflected by the plurality of reflecting surfaces; and
The angle of the plurality of reflecting surfaces with respect to the rotation axis is different, and the incident position of light incident on the fixed reflector is changed according to the rotational position of the rotary reflector,
In a state in which turning on / off of the light source is controlled in accordance with the rotational position of the rotary reflector, a figure, a symbol, or a character is drawn by a plurality of point-like lights obtained by rotating the rotary reflector. Vehicle lamp.

Images