JP5582334B2 - Reflector - Google Patents

Description

  The present invention relates to a reflecting mirror, and more particularly to a reflecting mirror capable of constituting a new-looking lamp having a different appearance when a light source is turned on.

  Conventionally, in the field of vehicular lamps, there has been known a reflecting mirror that is configured based on a rotating paraboloid having a focal point set in the vicinity of a light source (see, for example, Patent Document 1).

  As shown in FIG. 13, the reflecting mirror 200 described in Patent Literature 1 includes a plurality of vertically long divided surfaces 210 that extend in the vertical direction and are arranged in parallel in the left-right direction. In this configuration, light from a light source (not shown) incident on 210 is reflected by each divided surface 210 to form a predetermined light distribution pattern.

JP-A-10-329602

  However, in the reflecting mirror described in Patent Document 1 having the above configuration, although each of the divided surfaces 210 is configured as a simple paraboloidal surface although being divided into a plurality of divided surfaces 210, the light source There is a problem that the appearance at the time of lighting and non-lighting becomes uniform.

  This invention is made | formed in view of such a situation, and it aims at providing the reflecting mirror which can comprise the lamp | ramp of the new appearance from which the appearance at the time of light source lighting differs.

In order to solve the above-mentioned problem, the invention according to claim 1 is a reflecting mirror based on a substantially rotating paraboloid whose focal point is set in the vicinity of the light source, wherein the reflecting mirror is the substantially rotating paraboloid. A plurality of reflection surfaces arranged between two guide curves extending in one direction along the plurality of reflection surfaces, and each of the plurality of reflection surfaces has an incident position of light incident from the light source on one end side to the other end. As it shifts to the side, the reflection direction of the light incident from the light source continuously changes from the direction inclined with respect to the optical axis to the direction closer to the optical axis, the optical axis direction, and the original direction from the optical axis direction, and again As the cutting position by the plane perpendicular to the one direction shifts from one end side to the other end side so that it returns to the original reflection direction, the inclination angle of the cross section appearing between the two guide curves continuously Periodic reaction that changes and returns to the original tilt angle again Characterized in that it is configured as a surface.

  According to the first aspect of the present invention, it is possible to realize a novel appearance in which high brightness luminescent spots appear at different positions on the reflecting surface according to the viewpoint position when the light source is turned on, by the action of the periodic reflecting surface. In addition, it is possible to configure a lamp with good visibility that is easily visible even when the viewpoint position is moved.

According to a second aspect of the present invention, there is provided a reflecting mirror including a plurality of vertically long divided surfaces arranged in parallel and extending in a vertical direction along a substantially rotating paraboloid set near the light source. Each of the plurality of divided surfaces includes at least one divided surface including a first reflecting surface disposed between two first guide curves extending in the vertical direction along the substantially paraboloid, and the two And at least one divided surface including a second reflecting surface disposed between the first guide curve and the two symmetrical second guide curves, and the first reflecting surface is incident from the light source. As the light incident position shifts from one end side to the other end side, the reflection direction of the light incident from the light source is continuously from the right direction toward the optical axis, the optical axis direction, and from the optical axis direction to the right direction. Perpendicular to the vertical direction to change and return to the original reflection direction again As the cutting position by the flat surface shifts from one end side to the other end side, the inclination angle of the cross section appearing between the two first guide curves changes continuously and returns to the original inclination angle again periodically. The second reflection surface is configured so that the reflection direction of the light incident from the light source changes from the left as the incident position of the light incident from the light source shifts from one end side to the other end side. The cutting position on the plane perpendicular to the vertical direction is shifted from one end side to the other end side so that the direction near the axis, the optical axis direction, and continuously change from the optical axis direction to the left direction and return to the original reflection direction again. As a result, the inclination angle of the cross section that appears between the two second guide curves changes continuously, and is configured as a periodic reflection surface that returns to the original inclination angle again.

  According to invention of Claim 2, it becomes possible to form the light distribution pattern suitable for the vehicle lamp diffused in the left-right direction by the effect | action of a periodic 1st reflective surface and a 2nd reflective surface. .

  According to the second aspect of the present invention, the first reflection surface (the same applies to the second reflection surface) according to the viewpoint position when the light source is turned on by the action of the periodic first reflection surface and the second reflection surface. High-luminance bright spots appear at different positions, and it is possible to configure a vehicular lamp with good visibility that is easily visible even when the viewpoint position is moved.

  As described above, according to the invention described in claim 2, it is possible to form a light distribution pattern suitable for a vehicular lamp, and a novel bright spot appears depending on the viewpoint position when the lamp is turned on. It is possible to achieve an appearance, and it is possible to configure a vehicular lamp that has high visibility and is easily visible even when the viewpoint position is moved.

According to a third aspect of the present invention, in the reflecting mirror including a plurality of annular dividing surfaces arranged concentrically along a substantially rotating paraboloid having a focal point set in the vicinity of the light source, each of the dividing surfaces is the substantially A reflection surface disposed between two guide curves extending in the circumferential direction of the annular dividing surface along a paraboloid of revolution, and the reflection surface has an incident position of light incident from the light source at one end; As the shift from the side to the other end side, the reflection direction of the light incident from the light source is continuously from the direction inclined with respect to the optical axis to the direction closer to the optical axis, the optical axis direction, and the original direction from the optical axis direction. The cross section that appears between the two guide curves as the cutting position of the plane perpendicular to the circumferential direction of the annular dividing surface shifts from one end side to the other end side so that it changes and returns to the original reflection direction again. The inclination angle of the continually changes, again the original inclination angle Characterized in that it is configured as a periodic reflecting surface back to.

  According to the third aspect of the present invention, it is possible to realize a novel appearance in which high brightness bright spots appear at different positions on the reflecting surface according to the viewpoint position when the light source is turned on, by the action of the periodic reflecting surface. In addition, it is possible to configure a lamp with good visibility that is easily visible even when the viewpoint position is moved.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the reflective mirror which can comprise the lamp | ramp of the new appearance from which the appearance at the time of light source lighting differs.

It is a perspective view of the reflective mirror 20 which is embodiment of this invention. It is a front view of the reflecting mirror 20 shown in FIG. It is AA sectional drawing of the reflective mirror 20 shown in FIG. It is BB sectional drawing of the reflective mirror 20 shown in FIG. It is CC sectional drawing of the reflective mirror 20 shown in FIG. (A) Front view of split surface 21A including first reflection surface 21a arranged between guide curves C1 and C2, (b) Explanatory drawing of guide curves C1 and C2, (c) Each of first reflection surface 21a It is a figure for demonstrating the reflection direction of the light from the light source 10 which injected into the cross section. (A) Front view of split surface 21B including second reflection surface 21b arranged between guide curves C3 and C4, (b) Explanatory drawing of guide curves C3 and C4, (c) Each of second reflection surfaces 21b It is a figure for demonstrating the reflection direction of the light from the light source 10 which injected into the cross section. It is an example of the light distribution pattern P formed by the reflective mirror 20 shown in FIG. 1, FIG. Depending on the viewpoint position V _P is a diagram for explaining that the bright spot with high luminance appear. (A) Front view of modification of reflecting mirror 20, (b) AA sectional view, (c) BB sectional view, (d) CC sectional view, (e) DD sectional view. . It is a perspective view of the modification of the reflective mirror. It is a perspective view in the state where a part of modification of reflector 20 was cut. It is a figure for demonstrating the structure of the conventional reflective mirror.

  Hereinafter, the lamp which is embodiment of this invention is demonstrated, referring drawings.

  The lamp 100 of this embodiment is applied to a vehicle lamp (tail lamp, stop lamp, turn signal lamp, daytime running lamp, position lamp, etc.), general lighting equipment, and game lighting lamp. As shown in FIG. 2, a light source 10, a reflecting mirror 20, and the like are provided.

  As the light source 10, for example, an incandescent light bulb can be used.

  3 is an AA cross-sectional view of the reflecting mirror 20 shown in FIG. 2, FIG. 4 is a BB cross-sectional view, and FIG. 5 is a CC cross-sectional view. As shown in FIGS. 3 to 5, the reflecting mirror 20 is a reflecting surface configured based on a substantially rotating paraboloid PS whose focal point F is set near the light source 10. The reflecting mirror 20 includes, for example, a reflecting film formed by performing aluminum vapor deposition, silver coating, or the like on a reflector base material.

  As shown in FIG. 2, the reflecting mirror 20 includes a plurality of divided surfaces 21 (see reference numerals 21a and 21b in FIG. 2) divided by a vertical plane parallel to the optical axis AX.

  The split surface 21 is a vertically long split surface that extends in one direction (for example, the vertical direction) along the substantially paraboloid PS and is arranged in parallel in the left-right direction.

  The dividing surface 21 reflects light incident from the light source 10 as controlled light, and extends in one direction (for example, the vertical direction) along the substantially paraboloid PS in order to form a predetermined light distribution pattern. At least one divided surface 21A including the first reflecting surface 21a disposed between the two guide curves C1 and C2 (see FIG. 6A), and two guide curves C1 and C2 that are bilaterally symmetrical. It includes at least one divided surface 21B including the second reflecting surface 21b disposed between the guide curves C3 and C4 (see FIG. 7A).

  As shown in FIGS. 6A to 6C, the first reflecting surface 21a is incident from the light source 10 as the incident position of the light incident from the light source 10 is shifted from the one end side 21a1 to the other end side 21a2. 6C continuously changes from the right direction in FIG. 6C toward the optical axis AX, the optical axis AX direction, and the optical axis AX direction from the optical axis AX direction to the right direction in FIG. 6C. A horizontal cross section that appears between the two guide curves C1 and C2 as the cutting position by a plane (for example, a horizontal plane) orthogonal to one direction shifts from the one end side 21a1 to the other end side 21a2 so as to return to the reflection direction ( A straight or curved cross-section (FIG. 6 (c) is an example of a straight cross-section) The tilt angle continuously changes and then returns to the original tilt angle again (see particularly FIG. 6 (c)). It is configured as.

  As shown in FIGS. 7A to 7C, the second reflecting surface 21b is incident from the light source 10 as the incident position of the light incident from the light source 10 shifts from the one end side 21b1 to the other end side 21b2. The reflection direction of the light continuously changes from the left direction in FIG. 7C toward the optical axis AX, the optical axis AX direction, and from the optical axis AX direction to the left direction in FIG. A horizontal cross section appearing between the two guide curves C3 and C4 as the cutting position by a plane (for example, a horizontal plane) orthogonal to one direction shifts from the one end side 21b1 to the other end side 21b2 so as to return to the reflection direction ( A straight or curved cross section (FIG. 7 (c) is an example of a straight cross section) The angle of inclination changes continuously and returns to the original angle of inclination again (see in particular FIG. 7 (c)). It is configured as.

  The first reflecting surface 21a and the second reflecting surface 21b may be continuous for N periods.

  According to the first reflection surface 21a and the second reflection surface 21b configured as described above, light from the light source 10 incident on the first reflection surface 21a and the second reflection surface 21b is reflected in one direction when attention is paid to a specific cross section. However, if attention is paid to the entire first reflecting surface 21a and second reflecting surface 21b for one period, the light is reflected in all directions including the left direction, the front direction, and the right direction (FIG. 6C). FIG. 7 (c)).

  Therefore, for example, as shown in FIG. 2, a horizontally long light distribution pattern (particularly a vehicle) that is diffused substantially evenly in the left-right direction by combining the first reflecting surface 21a and the second reflecting surface 21b and arranging them symmetrically. It is possible to form a light distribution pattern suitable for a lighting fixture.

  In FIG. 2, the first reflecting surface 21 a and the second reflecting surface 21 b are arranged with the period shifted in the vertical direction (for example, shifted by a quarter period) with respect to the adjacent first reflecting surface 21 a and the second reflecting surface 21 b. This is an example. According to the reflecting mirror 20 shown in FIG. 2, the light distribution pattern P (see FIG. 8) suitable for a vehicle lamp that satisfies the light intensity required by the law is obtained by the action of the first reflecting surface 21a and the second reflecting surface 21b. It becomes possible to form.

  As described above, according to the lamp 100 of the present embodiment, the predetermined light distribution that is diffused substantially evenly in the left-right direction by the action of the first reflecting surface 21a and the second reflecting surface 21b arranged symmetrically. It is possible to form a pattern (in particular, a light distribution pattern P suitable for a vehicular lamp, see FIG. 8).

Further, according to the lamp 100 of the present embodiment, the first reflection surface 21a (the same applies to the second reflection surface 21b) shifts the incident position of light incident from the light source 10 from one end side to the other end side of the reflection surface 21a. Accordingly, the reflection direction of the light incident from the light source 10 is the direction closer to the optical axis AX from the right direction in FIG. 6C, the optical axis AX direction, and from the optical axis AX direction to the right direction in FIG. 6C. Since it is configured to continuously change and return to the original reflection direction again (see FIGS. 6C and 7C), for example, when the light source 10 is turned on, the viewpoint position V _P (FIG. 6 ( c) and FIG. 7 (c)), a bright spot Bp (see FIG. 9) appears at a different position on the first reflecting surface 21a (the same applies to the second reflecting surface 21b). It becomes possible to configure a vehicular lamp that is easily visible even when it is moved.

As described above, according to the lamp 100 of this embodiment, it is possible to form a light distribution pattern P that is suitable to the vehicle lamp (see FIG. 8), a high brightness in accordance with the viewpoint position V _P at the time of lighting It is possible to realize a new appearance in which a bright spot of Bp appears, and it is possible to configure a highly visible lamp that is easily visible even when the viewpoint position is moved.

  Further, according to the lamp 100 of the present embodiment, it is possible to provide a gorgeous and textured appearance by being reflected by outside light (indoor lighting or sunlight) even when not lit.

  In the case of constituting a general lighting device or a game lighting lamp, it is possible to use the reflecting mirror 20 including at least one of the first reflecting surface 21a or the second reflecting surface 21b.

  Next, a modified example will be described.

  In the above-described embodiment, the split surface 21 has been described as a vertically long split surface that extends in the vertical direction along the substantially paraboloid PS and is arranged in parallel in the left-right direction. It is not limited. For example, as shown in FIGS. 10 to 12, the dividing surface 21 may be at least one annular dividing surface arranged concentrically along the substantially paraboloid PS.

  Moreover, in the said embodiment, the 1st reflective surface 21a is arrange | positioned between the two guide curves C1 and C2 extended in a perpendicular direction along the substantially paraboloid PS, and the 2nd reflective surface 21b is two. The guide curves C1 and C2 and the two symmetrical guide curves C1 and C2 are described as being arranged, but the present invention is not limited to this. For example, as shown in FIGS. 10 to 12, the first reflecting surface 21 a (the same applies to the second reflecting surface 21 b) has two guide curves extending in the circumferential direction of the annular dividing surface 21 along the substantially parabolic surface PS. It may be arranged between C1 and C2.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

  DESCRIPTION OF SYMBOLS 10 ... Light source, 20 ... Reflector, 21 ... Dividing surface, 21a ... 1st reflective surface, 21b ... 2nd reflective surface, 100 ... Lamp, PS ... Substantially paraboloid, C1-C4 ... Guide curve

Claims (3)

In a reflector configured based on a substantially paraboloid whose focal point is set near the light source,
The reflecting mirror includes a plurality of arranged reflecting surfaces between two guide curves extending in one direction along the substantially paraboloid,
Each of the plurality of reflecting surfaces has an optical axis from a direction in which the reflection direction of the light incident from the light source is inclined with respect to the optical axis as the incident position of the light incident from the light source shifts from one end side to the other end side. The cutting position by the plane orthogonal to the one direction is changed from the one end side to the other end side so that it gradually changes from the direction toward the optical axis, the optical axis direction to the original direction, and then returns to the original reflection direction again. The reflecting mirror is configured as a periodic reflecting surface in which the inclination angle of the cross section appearing between the two guide curves changes continuously as it shifts to 2 and returns to the original inclination angle again. . In a reflecting mirror that includes a plurality of vertically divided planes that extend in a vertical direction along a substantially paraboloidal surface set in the vicinity of a light source and are arranged in parallel.
Each of the plurality of divided surfaces includes at least one divided surface including a first reflecting surface disposed between two first guide curves extending in a vertical direction along the substantially paraboloid, and the two At least one divided surface including a second reflecting surface disposed between the first guide curve and the two second symmetrical guide curves.
As the incident position of the light incident from the light source shifts from one end side to the other end side, the first reflecting surface has a reflection direction of the light incident from the light source that is closer to the optical axis from the right direction, the optical axis direction. As the cutting position on the plane perpendicular to the vertical direction shifts from one end side to the other end side so as to continuously change from the optical axis direction to the right direction and return to the original reflection direction again, the two second It is configured as a periodic reflecting surface where the inclination angle of the cross section that appears during one guide curve changes continuously and returns to the original inclination angle again,
As the incident position of the light incident from the light source shifts from one end side to the other end side, the second reflecting surface has a reflection direction of the light incident from the light source that is closer to the optical axis from the left direction, the optical axis direction. As the cutting position on the plane perpendicular to the vertical direction shifts from one end side to the other end side so as to continuously change from the optical axis direction to the left direction and return to the original reflection direction again, the two second A reflecting mirror used in a vehicular lamp characterized by being configured as a periodic reflecting surface in which the inclination angle of a cross section appearing between two guide curves changes continuously and returns to the original inclination angle again. In a reflecting mirror including a plurality of annular dividing surfaces arranged concentrically along a substantially paraboloid of focus set near the light source,
Each of the dividing surfaces includes a reflecting surface disposed between two guide curves extending in the circumferential direction of the annular dividing surface along the substantially paraboloid.
As the incident position of light incident from the light source shifts from one end side to the other end side, the reflection surface is closer to the optical axis from the direction in which the reflection direction of light incident from the light source is inclined with respect to the optical axis. The cutting position by the plane perpendicular to the circumferential direction of the annular dividing surface is changed from one end side to the other end side so that the optical axis direction changes continuously from the optical axis direction to the original direction and then returns to the original reflection direction again. The reflecting mirror is configured as a periodic reflecting surface in which the inclination angle of the cross section appearing between the two guide curves changes continuously as it shifts to 2 and returns to the original inclination angle again. .

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