WO2011033906A1 - パターン形成用照明装置 - Google Patents
パターン形成用照明装置 Download PDFInfo
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- WO2011033906A1 WO2011033906A1 PCT/JP2010/064164 JP2010064164W WO2011033906A1 WO 2011033906 A1 WO2011033906 A1 WO 2011033906A1 JP 2010064164 W JP2010064164 W JP 2010064164W WO 2011033906 A1 WO2011033906 A1 WO 2011033906A1
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- light source
- led light
- shape
- casing
- refractive element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
Definitions
- the present invention relates to a pattern forming illumination device for irradiating light of a predetermined shape such as a figure, a character, a symbol, or a pattern onto an object such as a mountain or a building or a structure.
- a light source an optical member that converts emitted light from the light source into parallel light
- the optical Some include a projection lens that projects parallel light from a member onto an exit surface, and a light-shielding mask that has an opening corresponding to a pattern disposed near the focal point on the light source side of the projection lens.
- the light shielding mask is disposed on the light source side of the projection lens, there is a problem that the structure becomes complicated.
- the amount of light is reduced by providing a light-shielding mask.
- a pattern is irradiated far away, the image is blurred.
- when changing the design there is also a problem in terms of work such that it is necessary to disassemble the irradiation device and replace the light shielding mask.
- the present invention departs from the idea of arranging a member having an opening corresponding to a pattern between a light source and a projection lens, and has a simple configuration, but a desired figure, character, symbol or pattern on an object. It is a main intended subject to provide a pattern-forming illumination device that can irradiate light of a predetermined shape such as, and that can easily change its figure, character, symbol, or pattern.
- the illumination device for pattern formation includes an LED light source using an LED light emitting element, and a light emission shape as seen from the optical axis direction of the LED light source at a predetermined position by refracting light from the LED light source.
- the irradiation shape on the object can be changed, for example, by changing the shape of the LED light source, or for a plurality of pattern formation
- the irradiation shape on the object can also be changed by combining the illumination device.
- a predetermined irradiation shape by arranging a plurality of illumination devices for pattern formation, the irradiation shape can be increased, and a desired figure can be formed on a distant object without using a magnifying lens or the like. Then, it becomes possible to irradiate light of a predetermined shape such as a character, a symbol, or a pattern.
- the LED light source, the first refraction element, and the second refraction element are disposed in the casing, and the first refraction element functions to enlarge the LED light source to a predetermined distance and form an image.
- the second refracting element has a function of expanding in a predetermined direction an image of a light emission shape as viewed from the optical axis direction of the LED light source that is enlarged and imaged.
- the image of the light emitting surface of the LED light source can be transformed into a predetermined shape and irradiated onto the object. Since the deformed image is not a parallel light but an image formed, it can prevent problems such as blurring of the outline of the irradiation shape, and forms an irradiation shape with a clear outline on the object. can do.
- the illumination device for pattern formation includes a distance variable mechanism that makes the distance between the LED light source and the first refractive element variable, and forms an image for each illumination device for pattern formation. It is desirable that the position can be changed.
- the LED light source In order to irradiate uniformly without irradiation unevenness and simplify the formation of the irradiation shape, the LED light source It is desirable that the light emission shape seen from the optical axis direction is a rectangle. At this time, the unit component of the irradiation shape is rectangular.
- the light emission shape seen from the optical axis direction of the LED light source In order to improve the workability by forming an image of the light emission shape seen from the optical axis direction of the LED light source on the object and recognizing the shape of the light emission surface only by confirming the shape of the first refractive element. It is desirable that the light emission shape seen from the optical axis direction of the LED light source and the shape of the first refractive element are similar.
- the first refractive element and the light exit are substantially the same, and the light emission shape of the LED light source viewed from the optical axis direction and the shape of the first refractive element are similar.
- the optical device further includes a plate-like optical element, and the first refraction is provided on one surface thereof. It is desirable that an element is formed and the second refractive element is formed on another surface.
- the casing forms an end that forms the light exit port.
- the contact surface contacting the first refractive element Provided in a folded portion formed by folding the portion inward, the contact surface contacting the first refractive element, and the first refractive element is moved toward the contact surface in the casing It is desirable to have a positioning projection for positioning and fixing the first refractive element in a state where the first refractive element is in contact with the contact surface.
- the present invention configured as described above, it is possible to irradiate the object with a predetermined shape such as a desired figure, character, symbol, or pattern, and the shape, character, symbol, or pattern. It is possible to provide a pattern forming illumination device that can easily change the above.
- the light irradiation system 100 is desired on the surface of a distant object (for example, a building such as a mountain, a building, or a structure such as a pyramid), for example, 400 to 500 m away.
- a distant object for example, a building such as a mountain, a building, or a structure such as a pyramid
- the light of a predetermined shape such as a figure, a character, a symbol, or a pattern is displayed.
- FIG. 1 shows a case where the character “mountain” is displayed on the ground of the mountain.
- this unit includes a plurality of unit groups 10 formed by connecting a plurality of pattern forming illumination devices 1 having a substantially rectangular parallelepiped shape in a straight line (in series).
- FIG. 2B is a side view of the unit group 10.
- the unit group 10 includes a plurality of (five in FIG. 2) lighting devices 1 such that the openings (light emission ports) 2A face in substantially the same direction and the respective openings 2A are on the same plane. They are connected in series by a connection holder 10H.
- the arrangement mode of the plurality of unit groups 10 can be appropriately set depending on the irradiation shape such as a figure, a character, a symbol, or a pattern to be displayed. For example, when displaying the character “mountain” on the surface of the mountain, Six unit groups 10 are arranged in a mountain shape (see FIG. 1). By forming the unit group 10 in this way, it is possible to improve workability such as easy handling when assembling or changing the arrangement of the light irradiation system 100.
- the illumination device 1 includes a casing 2, an LED light source 3, an imaging lens 4 that is a first refractive element, and a position adjustment mechanism 5. Is.
- the casing 2 has an opening 2A that is a light exit on a substantially rectangular front surface and has a substantially rectangular parallelepiped shape. Specifically, the casing 2 has a hollow box shape in which substantially the entire front surface is open. . Further, the inner peripheral surface of the casing 2 is subjected to a light shielding process (for example, a black surface process) for preventing reflection of light. Further, one imaging lens 4 and one protective member 6 for protecting the imaging lens 4 are provided in this order toward the front (light emission side) in the opening 2A of the casing 2. It has been.
- the protective member 6 is a transparent thin plate made of acrylic resin, and is provided in close contact with the imaging lens 4. A through hole 2h is provided on the back surface of the casing 2, and an operation connecting portion 52 of the position adjusting mechanism 5 described later is inserted therethrough.
- the LED light source 3 is a surface light source that is provided in the casing 2 and emits light toward the imaging lens 4. Specifically, as shown in FIG. A light emitting surface 301 having a light emitting shape viewed from the optical axis direction is provided so as to be positioned. 5 indicates the front focal point of the imaging lens, and the light emitting surface 301 is slightly outside the front focal point F, that is, the position where the light emitting surface 301 of the LED light source 3 is slightly separated from the front focal point F. (The distance between the light emitting surface 301 and the imaging lens 4 is set to be slightly larger than the distance between the front focal point F and the imaging lens 4).
- the LED light source 3 of the present embodiment is a single LED and is a single color (R, G, B) or white.
- this LED is a surface mounting type, for example, and a light emission surface makes a rectangle.
- the casing 2 has a substantially rectangular parallelepiped shape, and the opening 2A has a substantially rectangular shape (rectangular shape) and is similar to the light emitting surface 301, so that the shape of the unit component irradiated by the illumination device 1 can be intuitively recognized. Yes.
- the imaging lens 4 is provided in the opening 2A of the casing 2 and enlarges the light emitting surface 301 of the LED light source 3 on the object 200 to form an image.
- the imaging lens 4 is provided in the opening 2A of the casing 2 (substantially the entire front surface of the casing 2) and has substantially the same shape as the opening 2A when viewed from the optical axis direction.
- the casing 2 has a cubic shape
- the imaging lens 4 has a square shape when viewed from the optical axis direction. That is, the illumination device 1 of the present embodiment emits light from the entire surface of the cube.
- the shape of the imaging lens 4 is similar to the light emitting surface 301 of the LED light source 3.
- the imaging lens 4 is preferably a lightweight and thin resin Fresnel lens in order to reduce the weight of the entire illumination device 1.
- the position adjusting mechanism 5 includes a distance variable mechanism that makes the distance between the LED light source 3 and the imaging lens 4 variable.
- a grip portion 54 is provided outside the casing 2 and the grip portion 54 is operated. Thus, the position of the LED light source 3 with respect to the imaging lens 4 is adjusted.
- the configuration includes a light source holding part 51, an operation connecting part 52, and a support part 53.
- the light source holding unit 51 holds the LED light source 3 and is disposed in the casing 2. In the present embodiment, the light source holding unit 51 further functions as a heat radiating unit that radiates heat generated by the LED light source 3.
- the light source holding part 51 may be formed of a high thermal conductivity material such as aluminum, or may be provided with a heat radiating fin, in order to exhibit the function as a heat radiating part.
- the operation connecting portion 52 has one end connected to the light source holding portion 51 and a grip portion 54 provided at the other end, and has a rod shape that is inserted into a through hole 2h provided in the back surface of the casing 2.
- a heat radiating mechanism such as a heat radiating fin may be provided in the operation connecting portion 52.
- the grip portion 54 has a substantially spherical shape provided at the outer end portion of the casing 2 of the operation connecting portion 52. Further, the grip portion 54 is colored in the same color as the light emission color of the LED light source 3. Thereby, at the time of an assembly, the color of the illumination light of each light irradiation unit 1 can be easily grasped visually, and the workability of the assembly can be improved.
- the support portion 53 is provided between the casing 2 and the operation connecting portion 52, and supports the operation connecting portion 52 so that the light source holding portion 51 moves when the grip portion 54 is operated.
- the support portion 53 of this embodiment is provided in the vicinity of the periphery of the through hole 2h provided in the rear wall of the casing 2, and by fixing the operation connecting portion 52 to the rear wall of the casing 2,
- the operation connecting portion 52 is slidably supported, and the support portion 53 is rotatably supported around the rotation center.
- the support portion 53 is constituted by a spherical plain bearing (for example, a pillow ball).
- the support part 53 may be comprised by the set screw which press-fixes the operation connection part 52 from the circumferential direction, and may be comprised by an elastic member.
- the operation connecting portion 52 slides on the support portion 53, and the LED light source 3 can be moved closer to or away from the imaging lens 4. it can. Thereby, the imaging position of the light emitted from the imaging lens 4 can be adjusted back and forth with respect to the object 200.
- the operation connecting portion 52 rotates around the support portion 53, and the LED light source 3 can be moved in the vertical direction. Thereby, the irradiation direction of the light emitted from the imaging lens 4 can be changed.
- the support part 53 of this embodiment also has a function which prevents the light from LED3 from leaking from the through-hole 2h.
- the light irradiation system 100 of the present embodiment is provided with a power supply 9 corresponding to each unit group 10.
- each lighting device 1 is electrically connected by a power supply line 8, and each illumination is supplied to a power source 9.
- the LED light sources 3 of the device 1 may be connected in series to supply power to each LED light source 3.
- power may be supplied from the power supply 9 to the LED light sources 3 of the lighting devices 1 through the power supply line 8 without electrically connecting the lighting devices 1.
- a figure, a character, a symbol, or a pattern formed on the object 200 by the light irradiation system 100 is formed by a set of magnified images of the light emitting surface 301 of the illumination device 1 imaged on the surface of the object 200.
- the light emitting surface 301 of the LED light source 3 is rectangular, a figure, a character, a symbol, or a pattern is formed using a rectangle as a unit component.
- the position adjustment mechanism 5 independently adjusts the position of the LED light source 3 for each lighting device 1, so that the light emitting surface 301 of the LED light source 3 of each lighting device 1 with respect to the inclined surface of the object 200.
- Each of the enlarged images can be formed.
- the plurality of illumination devices 1 are arranged so that the arrangement of the plurality of illumination devices 1 corresponds to the irradiation shape of the plurality of illumination devices 1 on the object 200. And the irradiation shape by the some illuminating device 1 on the target object 200 is made changeable by changing the arrangement
- FIG. 10 since the unit group 10 is configured in a plurality of units, the irradiation shape on the object 200 is changed by changing the arrangement of the plurality of unit groups 10.
- the relationship among the light emitting surface 301 of the LED light source 3, the imaging lens 4 and the unit components will be described with reference to FIG.
- FIG. 10 when an enlarged image is formed by one imaging lens 4, the light emitting surface 301 of the LED light source 3 is imaged upside down and horizontally inverted.
- the distance between the light emitting surface 301 of the LED light source 3 and the principal point of the imaging lens 4 is a
- the distance between the principal point of the imaging lens 4 and the image plane (the surface of the object 200) is b
- the imaging lens 4 Let f be the focal length.
- the image plane the surface of the object 200
- the amount of movement of the light emitting surface 301 with respect to the imaging lens 4 becomes minute.
- the size A of the unit component imaged on the image plane (the surface of the object 200) (only the height dimension is shown in FIG. 10) is the size x of the light emitting surface 301 of the LED light source 3 (high in FIG. 10).
- the unit component becomes large. Considering the practical use, it is desirable that the light emitting surface 301 is within 10 mm square.
- the shape of the light emitting surface 301 of the LED light source 3 can be imaged at a predetermined position on the object 200 or the like.
- the irradiation shape on the target object 200 can be changed also by combining the some illuminating device 1, without arrange
- FIG. by expressing a predetermined irradiation shape by the arrangement of the plurality of lighting devices 1, the irradiation shape can be increased, and a desired figure, for example, on a distant object 200 can be obtained without using a magnifying lens or the like.
- Light of a predetermined shape such as a character, a symbol, or a pattern can be irradiated.
- a surface-mounted LED having a light emitting surface of a rectangular shape is used as the LED light source.
- an LED having another light emitting surface shape for example, a circle
- a bullet-type LED may be used. There may be.
- the light emission shape seen from the optical axis is the cross-sectional shape of the bullet-shaped resin mold part.
- the LED light source of the first embodiment is composed of only the LED, it may be composed of an LED and a rod lens that diffuses and emits light from the LED.
- the light exit surface of the rod lens is disposed in the vicinity of the focal position of the imaging lens, and the imaging lens images the light exit surface of the rod lens on the object.
- the LED light source may be composed of an LED and an optical fiber that transmits light from the LED.
- the light irradiation system is configured by using a plurality of unit groups in which a plurality of illumination devices are connected by a connection holder without configuring the unit groups.
- the arrangement may be changed for each lighting device.
- the unit group is not limited to a series shape, and various shapes such as a partial arc shape or a substantially L shape can be employed.
- the imaging lens of the first embodiment uses a Fresnel lens
- a convex lens may be used.
- the number of lighting devices constituting the unit group, the number of unit groups, and the arrangement mode are not limited to the above-described embodiment, and can be appropriately changed according to the irradiation shape irradiated onto the object. Yes.
- FIG. 11 shows a plurality of lighting devices 1 arranged in a row, and the vertical or horizontal installation angle or the position adjusting mechanism 5 of each lighting device 1 is adjusted by adjusting the vertical or horizontal irradiation direction. The case where the character “Large” is displayed on the ground surface is shown.
- a pattern composed of a plurality of colors may be irradiated on the object by changing the color of the light source of each lighting device or changing the color of the light source for each unit group.
- the pattern include a lattice pattern such as a checkered pattern or a striped pattern.
- a power source is provided corresponding to each unit group.
- power may be supplied from one power source to all the device groups.
- the casing of the first embodiment has a substantially rectangular parallelepiped shape.
- the back surface (and the front surface) has a substantially circular cylindrical shape, a substantially regular triangular prism shape, or a substantially regular hexagonal shape. It may be a regular hexagonal prism.
- the opening is formed on substantially the entire front surface of the casing, and the light guide lens has substantially the same shape as the opening, but the opening is substantially the same as the front surface of the casing.
- the light guide lens may not be formed on the entire surface, and the light guide lens may have a shape different from that of the opening.
- each lighting device may be provided with a connection mechanism.
- This connection mechanism is provided on the outer surface of the first connecting portion 71 provided on the outer surface of the side wall of the casing 2 of one lighting device 1 and on the side wall of the casing 2 of the other lighting device 1, and is connected to the first connecting portion.
- a second connecting portion 72 connected to the portion 71.
- the first connecting portion 71 and the second connecting portion 72 are a side wall of the casing 2 (for example, the left side wall, the upper side wall).
- the second connecting portion 72 is a concave groove provided on the outer surface of the side wall (for example, the right side wall or the lower side wall) of the casing 2.
- the ridge portion has a shape that expands in width as it goes in the protruding direction, and the concave groove corresponds to the shape of the ridge portion, and has a shape in which the groove width expands in the depth direction.
- the illuminating device 1 can be connected by sliding a protruding item
- the first connecting portion 71 is a protrusion having a pin shape, for example, provided on the outer surface of the side wall (for example, the left side wall, the upper side wall) of the casing 2, and the second The connecting portion 72 is a recess provided on the outer surface of the side wall (for example, the right side wall or the lower side wall) of the casing 2.
- an elastic body (not shown in FIG. 12) is provided on the inner peripheral surface of the concave portion so as to be in close contact with and fixed to the protrusion when the protrusion is fitted.
- the lighting device 1 can be combined vertically and horizontally by combining the lighting devices so that the first connecting portion 71 and the second connecting portion 72 of the lighting devices are fitted.
- the 1st connection part 71 and the 2nd connection part 72 should just be provided only in one set of opposing surfaces (for example, right and left side walls) among the casings 2.
- the first connecting portion 71 and the second connecting portion 72 may be provided only on one surface of the casing 2 of each lighting device 1.
- the pattern on the object can be changed regularly or randomly. It can also increase the degree of production.
- the position adjustment mechanism is provided. However, it is determined that the object is far away (several hundred meters), and the variable range of the imaging position is included in the error range. In some cases, the position adjusting mechanism can be omitted.
- a light irradiation unit (illumination device) 1 for generating, for example, lines such as a stop line, a roadside line, and a center line on a road by illumination.
- the reference numerals used in the second embodiment are different from those in the first embodiment.
- the road line generation lighting device 1 is used to generate a line L indicating a road marking such as a center line in a tunnel by illumination, for example.
- the road line generation lighting device 1 has an outline cube appearance, and includes a casing 2, an LED light source 3, a Fresnel lens 4 as a first refractive element, a second A lenticular lens 5 that is a refractive element and a position adjusting mechanism 6 that adjusts the distance between the LED light source 3 and the Fresnel lens 4 are provided.
- the casing 2 will be described with reference to each of the parts 2 to 6.
- the casing 2 is a cube-shaped thin-walled box whose one surface is opened.
- a lenticular lens 5 is attached, and an LED light source 3 and a position adjusting mechanism 6 are attached to the inner surface of the opposite surface of the opening 2A.
- a power supply box 7 is provided inside the casing 2, and a substantially U-shaped installation base 2 ⁇ / b> H is provided on the outer surface of the casing 2 so as to be rotatable forward and backward. 14, 15, and 17, the installation base 2 ⁇ / b> H is omitted for simplicity.
- the LED light source 3 uses a chip-type LED, and as shown in FIG. 16, the light emitting surface, which is a light emitting shape viewed from the optical axis direction, has a square shape.
- the LED light source 3 is provided at substantially the center of one surface of the casing 2 and is located outside the focal point of the Fresnel lens 4 and is a position where light emitted from the Fresnel lens 4 forms an image on the road. The position is adjusted by the position adjusting mechanism 6 as described above.
- the Fresnel lens 4 refracts incident light and forms an image at a predetermined position.
- the distance between the Fresnel lens 4 and the LED light source 3 is adjusted by the position adjusting mechanism 6 so as to form an image on the road.
- the lenticular lens 5 is provided in contact with the front of the Fresnel lens 4 in the optical axis direction.
- the shape is a large number of thin semi-cylindrical kamaboko lenses. And it arrange
- An acrylic lens cover 8 is provided in front of the lenticular lens 5 in the optical axis direction.
- the lenticular lens 5 and the lens cover 8 are lens presses provided at the center of each side in the opening 2A of the casing 2. It is fixed by being sandwiched between a plate 201 and a front frame 202 provided so as to cover the periphery from the outer surface of the opening 2A.
- the position adjustment mechanism 6 includes a plate-shaped heat sink 61 to which the LED light source 3 is attached, a feed screw mechanism 62 that is attached to the heat sink 61 and moves the heat sink 61 back and forth along the optical axis direction, and the heat sink 61 in the front-rear direction. And a guide bar 63 that guides it so that it only moves to the center.
- a feed screw mechanism 62 is provided in a substantially central part of the heat sink 61, and the LED light source 3 is attached to the lower part thereof.
- the guide rod 63 is provided along the optical axis direction so as to penetrate the heat sink 61 at the upper portion of the feed screw mechanism 62.
- the feed screw mechanism 62 includes a handle portion 621 provided outside the casing 2, a screw portion 622 connected to the handle portion 621 and protruding inward, and a nut portion 623 screwed into the screw portion 622.
- the part 623 is fixed to the heat sink 61. Accordingly, as shown in FIG.
- the nut portion 623 moves with respect to the screw portion 622 by turning the handle portion 621, so that the LED light source 3 can be moved back and forth along the optical axis direction accordingly.
- the length of the screw portion 622, the length of the guide rod 63, and the size of the power supply box 7 are determined when the LED light source 3 is at the innermost position of the casing 2 (that is, the LED light source 3 is farthest from the Fresnel lens 4). The optical path is not obstructed even in a state where the light is passed.
- FIG. 17 it is a case where one line L is imaged on the road by one road line generation illumination device 1. That is, when it is necessary to display the center line with a dotted line, it is necessary to prepare the road line generating lighting device 1 by the number of white line portions.
- Each of the road line generation lighting devices 1 adjusts the distance between the LED light source 3 and the Fresnel lens 4 by the position adjusting mechanism 6 according to the distance from itself to the road surface of the road.
- a real image is formed on the road surface.
- the lenticular lens 5 diffuses light only in the one-dimensional direction.
- the real image of the LED light source 3 that is, the square light is imaged by the lenticular lens 5 while overlapping innumerably in the direction in which the line L is to be drawn, so that the result is as shown in FIG.
- an image is formed as one rectangular line L.
- the line L can be formed on the road, but as shown in FIG. 18B.
- a circular shape appears at the end. That is, as shown in FIG. 18A, when the LED light source 3 is used as the LED light source 3 as shown in FIG. 18A, a rectangular line often used for display on the road is used. It is easy to generate as a shape close to and easy to use.
- the road line generation lighting device 1 conventionally has the LED light source 3 disposed at the focal position of the Fresnel lens 4 in order to project the rectangular line L onto the road surface. Instead, it was configured that the line L was generated by imaging the shape of the LED light source 3 on the road. However, the idea is completely different from the conventional one.
- the light emitted from the LED light source 3 having the rectangular light emitting surface 301 is imaged on the road by the Fresnel lens 4 and stretched side by side in a predetermined direction by the lenticular lens 5 while overlapping innumerably. Therefore, even if the distance between the LED light source 3 and the road surface is long, the line L with a clear outline can be projected onto the road surface. Therefore, when the line L is projected by irradiating the parallel light onto the road surface, the outline is blurred, and the line L is made much easier to see than when the driver's visibility is not so good. Can do.
- one line L is formed by only one LED light source 3, one Fresnel lens 4, and one lenticular lens 5, a line L having a very simple configuration and a small number of parts can be formed. Can be formed.
- the LED light source, the Fresnel lens that is the first refractive element, and the lenticular lens that is the second refractive element are arranged in this order in the casing, but the LED light source, the second refractive element, It may be arranged in the order of the first refractive element.
- the second refractive element is not limited to the lenticular lens, and may be a linear Fresnel lens or the like. In short, it is sufficient if it has an action of spreading light only in a certain direction.
- the lighting device of the second embodiment is for generating a road line, but it is also possible to generate a line on a wall surface of a building.
- the second refractive element of the second embodiment has a function of spreading light only in a one-dimensional direction.
- a transparent phase modulation type diffractive optical element for example, a glass plate or an acrylic plate is finely patterned.
- a processed holographic diffractive optical element or the like may be used to spread light in a two-dimensional direction and irradiate light of a predetermined shape.
- a holographic diffractive optical element that generates a square frame shape as the second refractive element, it is possible to irradiate light having a square frame shape at a predetermined distance imaged by the first refractive element.
- it can also comprise so that a rectangular frame etc. may be irradiated by combining the illuminating device which irradiates a some line.
- the first refractive element and the second refractive element are separate Fresnel lenses and lenticular lenses.
- a Fresnel lens is formed on one surface of one acrylic plate, and the other surface is formed. May have a lenticular lens formed thereon. If it is such, the number of parts can be reduced, or the operation
- the light emitting surface of the LED light source has a square shape, but may have other shapes.
- it is a circular light emitting surface, it can be made into a roughly rectangular shape by adjusting the interval of image formation by overlapping with a lenticular lens, and it is also used when some unevenness can be allowed can do.
- the LED light source of the second embodiment has only one LED chip, it may have a plurality.
- the LED light source may be attached to be inclined with respect to the direction in which the lenticular lenses are arranged.
- FIG. 19 (b) if the LED chip is tilted and attached in the second embodiment, a line having at least a thick central portion can be formed on the road surface. That is, the number and direction of the LED chips may be changed according to the shape of the line formed on the road surface.
- a plurality of LED light sources may be arranged so that their optical axis directions are different (specifically, arranged such that the optical axes are radial) so as to form one line.
- the LED light source and the lenticular lens are configured to be adjustable in distance, but may further include a tilt adjusting mechanism that adjusts the tilt of the LED light source with respect to the lenticular lens. If it is such, it becomes possible to change the thickness etc. of the line projected, as shown in FIG.19 (b).
- a plurality of the above-described road line generation lighting devices 1 are prepared and arranged side by side so that the predetermined directions for spreading the light of the second refraction elements 5 coincide with each other.
- You may comprise as.
- the casing 2 since the casing 2 has a substantially cubic shape, it is easy to provide the road line generating lighting device 1 adjacent to the predetermined direction, and The light intensity of the line L can be improved by overlapping the light emitted from each road line generation lighting device 1.
- the line can be made more conspicuous even in an environment where visibility is particularly required.
- the length of the entire line can be increased.
- the road line generation lighting devices 1 are arranged in close contact with each other, but may be slightly separated. In short, it is only necessary that the road line generation illumination system 100 is configured such that the lines L formed by the light emitted from the respective road line generation illumination devices 1 are arranged so as to overlap each other.
- a plurality of road line generation lighting devices may be used to generate a design or characters used for road marking. Specifically, a cross mark or a U-shaped character may be generated with a plurality of lines.
- the line is projected directly onto the road surface.
- the road surface in this specification is a concept indicating the surface of a road when it is hidden by snow or the like.
- the casing 2 of the lighting device 1 of the present embodiment is a lens provided in a folded portion 23 formed by folding the end portion of the side wall 22 forming the opening 2 ⁇ / b> A inward.
- the folded portion 23 of the present embodiment is formed by folding the casing side wall 22 approximately 180 degrees, and the side surface of the folded portion 23 is formed so as to be in close contact with the inner surface of the casing side wall 22. Further, the folded portion 23 is formed over the entire side wall 22 of the casing 2.
- the lens contact surface 23P is configured by the tip surface of the folded portion 23.
- the positioning protrusion 24 is configured by denting the side wall 22 of the casing 2 inward by press working. Specifically, a plurality of side walls 22 of the casing 2 are provided. The positioning projection 24 is provided so as to be separated from the distal end surface (lens contact surface 23P) of the folded portion 23 by the thickness of the Fresnel lens 4 to be fixed. As a result, the Fresnel lens 4 fixed by the positioning protrusion 24 receives a pressing force from the positioning protrusion 24 toward the lens contact surface 23P while being in contact with the lens contact surface 23P.
- the casing 2 is formed using sheet metal.
- the folded portion 23 is formed by folding the end portion that forms the opening 2 ⁇ / b> A by pressing, and the positioning protrusion 24 is formed.
- the Fresnel lens 4 is accommodated in the casing 2, the inside of the casing 2 is moved from the positioning projection 24 side to the lens contact surface 23P side. Then, the Fresnel lens 4 moves over the positioning protrusion 24 and immediately contacts the lens contact surface 23P when the positioning protrusion 24 is exceeded. As a result, the Fresnel lens 4 is positioned and fixed. Next, the linear Fresnel lens 5 is fitted into the opening 2 ⁇ / b> A formed by the folded portion 23 from the front side of the light exit side of the Fresnel lens 4, and is fixed in a state in contact with the Fresnel lens 4.
- the protective cover 7 is fitted into the opening 2 ⁇ / b> A formed by the folded portion 23 from the front side of the light exit side of the linear Fresnel lens 5, and is fixed in contact with the linear Fresnel lens 5.
- a gap is formed between the folded portion 23 and the protective cover 7, and an adhesive is filled between the folded portion 23, the linear Fresnel lens 5, and the protective cover 7 using this gap.
- the linear Fresnel lens 5 and the protective cover 7 can be fixed to the casing 2, and the rectangular opening 2A where it is difficult to provide a sealing member such as an O-ring can be sealed.
- the Fresnel lens 4 can be positioned by merely fitting the Fresnel lens 4 so as to contact the lens contact surface 23P. Since it is fixed by the positioning projection 24, the Fresnel lens 4 can be positioned and fixed to the casing 2 without cutting the casing 2 or providing a separate fixing member (clamping tool). Therefore, it is possible to easily attach and position the Fresnel lens 4 to the casing 2 while simplifying the configuration of the lighting device 1 and reducing the cost.
- the Fresnel lens is sandwiched between the lens contact surface and the positioning projection, but in addition, the Fresnel lens and the protective cover, and the Fresnel lens and the optical filter are configured by the lens contact surface and the positioning projection.
- Fresnel lens and diffractive optical element linear Fresnel lens or holographic diffractive optical element
- Fresnel lens and optical filter and diffractive optical element Fresnel lens and optical filter and diffractive optical element
- a configuration may be adopted in which the element, the protective cover, the Fresnel lens, the optical filter, the diffractive optical element, the optical filter, and the protective cover are sandwiched.
- antireflection or antifogging coating may be applied to the flat surface of the lens or the protective plate, or antireflection or antifogging treatment may be performed by providing an antireflection or antifogging film.
- the lens contact surface of the third embodiment is configured by the front end surface of the folded portion.
- the folded portion You may comprise by the inner surface.
- the positioning protrusion of the third embodiment is configured by denting the side wall of the casing inward by pressing, positioning is performed by separately attaching a member constituting the positioning protrusion to the inner surface of the casing side wall.
- a protrusion may be formed.
- the casing of the third embodiment has a rectangular tube shape such as a cubic shape whose entire surface is open, but may have a cylindrical shape.
- the illuminating device 1 is arranged so that its optical axis C is inclined with respect to a plane W such as a wall surface that is a surface to be irradiated.
- the illumination device 1 is arranged such that the optical axis C forms an acute angle with respect to the plane W (for example, an angle range of 0 degrees to 10 degrees).
- the irradiation device 1 causes the light emitting surface 301 of the LED light source 3 to form an image at a predetermined position on the irradiation target surface W, and generates a line on the plane W in a predetermined range on both sides before and after the imaging position Q. .
- a method of inclining the optical axis C of the illuminating device 1 with respect to the irradiation target surface W for example, a method of adjusting the installation angle of the illuminating device 1 (see FIG. 22) or a position of the LED light source parallel to the Fresnel lens. It is used by shifting the relative positional relationship between the optical axis of the LED light source and the optical axis of the Fresnel lens, such as a method of moving or using the optical axis center position of the Fresnel lens so as to be shifted with respect to the optical axis of the LED light source.
- a method is conceivable.
- a square-shaped rectangular tube-shaped casing with a side of 100 mm subjected to sheet metal processing with a thickness of 1 mm was provided with a square-shaped opening (light emission port) with a side of 96 mm.
- a square Fresnel lens having a focal length of 100 mm, a thickness of 2 mm, and a side of 98 mm is held as a first refracting element using the lens contact surface of the folded portion formed by sheet metal folding and the positioning projection, and is in close contact with the Fresnel lens.
- An acrylic plate which is a square protective cover having a thickness of 5 mm and a side of 96 mm is fitted into the opening.
- the acrylic plate surface is subjected to antireflection treatment and antifogging treatment.
- the LED light source uses a square surface-mounted high-intensity white LED with a side of 2 mm, and is provided with a mechanism that can vary the distance between the light emitting surface 301 and the lens surface.
- the optical axis of the illuminating device 1 is positioned so that the central portion of the light emitting surface enlarged and imaged is located at the imaging position Q on the plane W 5 m away from the illuminating device 1 in a state where the illuminating device 1 is close to the plane W.
- the width of the line formed on the wall surface is 98 mm, and the edge portion (contour) of the line can be made clear.
- the central lower part of the LED light source 3 that has undergone enlarged imaging illuminates the wall surface between the illumination device 1 and the enlarged imaging position Q in a line, and the upper central part of the light source lines the wall part farther from the enlarged imaging position Q. As a result, a line of about 10 m can be generated on the wall surface. At this time, as the line light moves away from the imaging position Q, the edge portion (contour) of the line becomes blurred.
- the upper end portion of the enlarged imaged light emitting surface is located at a point on the plane W 10 m away from the illumination device 1. It may be located. In this case, the edge portion (contour) of the line can be made clear at a point 10 m away.
- a line can be generated on the plane W using the illumination device 1 having the imaging optical system. Further, by generating a line within a predetermined range on both sides before and after the imaging position Q, the edge portion (contour) of the line can be made clear.
- the LED light source of the illuminating device 1 has a rectangular shape, the light intensity distribution of the line can be rectangular and the outline can be made clear.
- the casing 2 is formed from sheet metal, the light emission port of the illumination device 1 can be brought as close to the plane as possible, and illumination can be performed from the vicinity of the illumination device 1.
- You may comprise so that one part or all part of may overlap. Thereby, even if a person etc. enter between the illuminating devices 1 arranged oppositely, the line does not disappear due to the shadow of the person.
- a plurality of lighting devices 1 may be connected and arranged. Furthermore, in order to improve the stage performance, the lighting devices 1 that emit different colors may be connected and arranged, or the lighting devices 1 that emit different colors may be connected and arranged, and the lighting devices 1 arranged opposite to each other may have different illumination colors. It is possible to increase the number of colors.
- the length of the line can be dynamically changed by changing the optical axis angle of the illuminating device with respect to the irradiation target surface with time, and the degree of production can be enhanced.
- the degree of production can be enhanced.
- by using a plurality of illumination devices and changing the arrangement of the lines of each illumination device it is possible to generate x marks, square marks, and simple characters on the irradiation target surface.
Abstract
Description
以下に第1実施形態に係る照明装置を用いた光照射システムについて図面を参照して説明する。
本実施形態に係る照明装置1は、図3及び図4に示すように、ケーシング2と、LED光源3と、第1屈折要素である結像レンズ4と、位置調節機構5と、を具備するものである。
焦点距離f=100mmの結像レンズ4を用いて、b=1mの地点に発光面301を結像して照明するためには、a=100×1000/(1000-100)=111.11mmとなる。
このように構成した本実施形態に係る光照射システム100によれば、対象物200上等の所定の位置にLED光源3の発光面301の形状を結像させることができる。これにより、LED光源3と結像レンズ4との間に他の部材を配置することなく、複数の照明装置1を組み合わせることによっても対象物200上における照射形状を変更することができる。また、複数の照明装置1の配置によって所定の照射形状を表現することで、照射形状を大きくすることができ、拡大レンズ等を用いることなく、例えば遠方の対象物200上にも所望の図形、文字、記号又は模様などの所定形状の光を照射することができるようになる。
次に、道路に例えば停止線、路側線、中央線等のラインを照明により生成するための光照射ユニット(照明装置)1について説明する。また、第2実施形態で用いる符号は、前記第1実施形態とは異なる。
本実施形態に係る道路ライン生成用照明装置1は、例えば、トンネル内のセンターライン等の道路標示を示すラインLを照明により生成するために用いられるものである。
ケーシング2は、一面が開口した立方体形状の薄肉箱体であり、図14、図15の内部断面図に示すように、その光射出口2Aには、フレネルレンズ4及びレンチキュラーレンズ5が取り付けてあり、その開口2Aの対向面の内側面にはLED光源3及び位置調節機構6が取り付けてある。また、ケーシング2の内部には電源ボックス7が設けてあり、ケーシング2の外側面には、概略コの字状の設置台2Hが前後に回転可能に設けてある。なお、図14、図15、図17では簡単のため設置台2Hは省略してある。
このように本実施形態の道路ライン生成用照明装置1は、従来であれば、長方形状のラインLを路面上に投影するには、LED光源3をフレネルレンズ4の焦点位置に配置し、レンズから射出される光を平行光にする必要があると思いこまれていた所を、そうではなく、LED光源3の形状自体を道路上に結像させることによりラインLを生成するように構成したことが従来とは全く発想の異なるものである。
次に、前記各実施形態の照明装置1の変形実施形態について説明する。
このように構成した本実施形態に係る照明装置1によれば、フレネルレンズ4をレンズ当接面23Pに接触するように嵌め入れるだけで、フレネルレンズ4の位置決めができるだけでなく、その際に、位置決め突起24により固定されるので、ケーシング2に切削加工を施すことなく又は別途固定部材(締め付け工具)を設けることなく、フレネルレンズ4をケーシング2に位置決め固定することができる。したがって、照明装置1の構成を簡単にし、低コスト化を図りつつも、フレネルレンズ4のケーシング2への取り付け及び位置決めを簡単に行うことができる。
次に、第1実施形態及び第3実施形態に説明した照明装置1を用いて、構造物の天井面、壁面、床面等の平面W上にラインを生成するライン生成方法について説明する。
このように構成した本実施形態に係るライン生成方法によれば、結像光学系を有する照明装置1を用いて平面W上にラインを生成することができる。また、結像位置Qの前後両側の所定範囲でラインを生成することにより、ラインのエッジ部分(輪郭)をはっきりさせることができる。特に、照明装置1のLED光源が矩形状をなすため、ラインの光強度分布を矩形にすることができ輪郭をはっきりさせることができる。また、ケーシング2が板金から形成されているため、照明装置1の光射出口を可及的に平面に近づけることができ、照明装置1の近傍から照明することができる。
Claims (8)
- LED発光素子を用いたLED光源と、
前記LED光源からの光を屈折させて、所定の位置において、前記LED光源の光軸方向から見た発光形状の像を拡大して結ばせる第1屈折要素と、
前記LED光源及び前記第1屈折要素を収容し、前記第1屈折要素から出た光を外部に射出する光射出口を有するケーシングと、を備えるパターン形成用照明装置。 - 前記第1屈折要素から出た光を所定の方向に拡げて、前記LED光源の光軸方向から見た発光形状の像を所定形状に変形する第2屈折要素をさらに備える請求項1記載のパターン形成用照明装置。
- 前記LED光源と前記第1屈折要素との距離を可変にする距離可変機構を備えることを特徴とする請求項1記載のパターン形成用照明装置。
- 前記LED光源の光軸方向から見た発光形状と前記第1屈折要素の形状とが相似形であることを特徴とする請求項1記載のパターン形成用照明装置。
- 前記第1屈折要素と前記光射出口が略同一であり、前記LED光源の光軸方向から見た発光形状と前記第1屈折要素の形状とが相似形であることを特徴とする請求項1記載のパターン形成用照明装置。
- 板状の光学素子を更に有し、その一面に前記第1屈折要素が形成され、別の一面に前記第2屈折要素が形成されている請求項2記載のパターン形成用照明装置。
- 前記ケーシングが、
前記光射出口を形成する端部を内側に折り返して形成された折り返し部に設けられ、前記第1屈折要素に当接する当接面と、
前記第1屈折要素子を前記ケーシング内で前記当接面に向かって移動させて前記第1屈折要素が前記当接面に接触した状態において、前記第1屈折要素を位置決め固定する位置決め突起と、を有する請求項1記載のパターン形成用照明装置。 - 道路上に光を照射して、ラインを生成する道路ライン生成用照明装置であって、
LED発光素子を用いたLED光源と、
前記LED光源からの光を屈折させて、所定の位置において、前記LED光源の光軸方向から見た発光形状の像を拡大して結ばせる第1屈折要素と、
前記第1屈折要素から出た光を所定の方向に拡げて、前記LED光源の光軸方向から見た発光形状の像を所定形状に変形する第2屈折要素と、
前記LED光源、前記第1屈折要素及び前記第2屈折要素を収容するケーシングとを備え、
前記LED光源の光軸方向から見た発光形状が所定の方向に伸びた像が道路上に結ばれてラインが生成される位置に、前記LED光源、前記第1屈折要素及び前記第2屈折要素が前記ケーシング内に配置されていることを特徴とする道路ライン生成用照明装置。
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JP2011510754A JP5394476B2 (ja) | 2009-09-18 | 2010-08-23 | パターン形成用照明装置 |
ES10817019T ES2728968T3 (es) | 2009-09-18 | 2010-08-23 | Dispositivo de iluminación para formación de patrones |
CN201080012050.1A CN102356420B (zh) | 2009-09-18 | 2010-08-23 | 图案形成用照明装置及道路线生成用照明装置 |
US13/120,413 US8449148B2 (en) | 2009-09-18 | 2010-08-23 | Lighting device for forming pattern |
EP10817019.2A EP2479742B1 (en) | 2009-09-18 | 2010-08-23 | Lighting device for pattern formation |
HK12105373.2A HK1165073A1 (en) | 2009-09-18 | 2012-06-01 | Lighting device for pattern formation and lighting device for road line generation |
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- 2010-08-23 JP JP2011510754A patent/JP5394476B2/ja active Active
- 2010-08-23 WO PCT/JP2010/064164 patent/WO2011033906A1/ja active Application Filing
- 2010-08-23 EP EP10817019.2A patent/EP2479742B1/en active Active
- 2010-08-23 US US13/120,413 patent/US8449148B2/en active Active
- 2010-08-23 ES ES10817019T patent/ES2728968T3/es active Active
- 2010-08-23 CN CN201080012050.1A patent/CN102356420B/zh active Active
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Cited By (6)
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JP2012255271A (ja) * | 2011-06-08 | 2012-12-27 | Sekisui Jushi Co Ltd | 道路標示装置および道路標示装置の設置構造 |
WO2013111032A1 (en) * | 2012-01-24 | 2013-08-01 | Koninklijke Philips N.V. | Lighting system and a luminaire |
JP2014123479A (ja) * | 2012-12-21 | 2014-07-03 | Hitachi Appliances Inc | 照明装置及びこれに用いられる集光ユニット |
WO2018084215A1 (ja) * | 2016-11-02 | 2018-05-11 | 国立大学法人徳島大学 | 表示装置及び画素ユニット |
JPWO2018084215A1 (ja) * | 2016-11-02 | 2019-10-03 | 国立大学法人徳島大学 | 表示装置及び画素ユニット |
WO2018221091A1 (ja) | 2017-05-29 | 2018-12-06 | 株式会社アーティエンス・ラボ | 光偏向装置、画像表示装置、信号装置、画像記録媒体、及び、画像再生方法 |
Also Published As
Publication number | Publication date |
---|---|
US20120162996A1 (en) | 2012-06-28 |
EP2479742A4 (en) | 2013-10-02 |
CN102356420B (zh) | 2015-04-15 |
CN102356420A (zh) | 2012-02-15 |
ES2728968T3 (es) | 2019-10-29 |
EP2479742B1 (en) | 2019-05-01 |
JP5394476B2 (ja) | 2014-01-22 |
JPWO2011033906A1 (ja) | 2013-02-14 |
US8449148B2 (en) | 2013-05-28 |
HK1165073A1 (en) | 2012-09-28 |
EP2479742A1 (en) | 2012-07-25 |
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