JP2014203616A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system which can control intensity of irradiation light accurately in multiple areas varying in required illuminance in an irradiated surface, and has a simple structure and a high utilization efficiency of light source light.SOLUTION: A lighting system 1 has a light source member 2 including a light source emitting light source light Ls, and a reflect member 20 reflecting the light source light Ls for an irradiated surface Rp. The light source member 2 has a shading unit blocking direct light which is the light source light emitted from the light source to the irradiated surface Rp so that only reflected light Lr provided by reflection of the light source light Ls by the reflect member 20 enters the irradiated surface Rp.

Description

  The present invention is intended to improve the working environment in the factory, or to increase the safety of parks, streets, etc., and to further effectively illuminate signboards and bulletin boards, to maintain a sanitary environment with ultraviolet light. In detail, the light reflection of the reflecting member that reflects the light source light is applied to the illumination pattern including a bright (strong illumination) region and a dark (weak illumination) region formed on the illuminated surface. The present invention relates to a light source device that can be accurately adjusted according to the shape of a surface.

  Conventionally, in order to efficiently illuminate the surrounding area of a street light as a street light of a park or road, a pillar installed on a park site or road surface and a light source member attached to the top of the pillar are provided. Some have (for example, Patent Document 1).

  In such a street lamp, the light source member includes a translucent case fixed to the upper portion of the street lamp support, a light source housed in the translucent case, and a mirror surface portion disposed above the light source. It has.

  In this street lamp, the light emitted upward from the light source is reflected obliquely downward at the mirror surface, and the area around the street light is efficiently reflected by the direct light downward from the light source and the reflected light from the mirror surface. Can be irradiated.

  Patent Document 2 also discloses an illumination device that illuminates a plaza, a tennis court, a parking lot, and the like, and includes a light source and a reflecting mirror as in Patent Document 1, and includes direct light from the light source and reflected light from the reflecting mirror. The method of efficiently irradiating the surface to be irradiated is disclosed.

JP 2004-71490 A JP 57-141801 A

  By the way, in streets, a sidewalk may require brighter illumination than a roadway, and in a factory or the like, a specific work area may require brighter illumination than other areas. Further, in a store or the like, bright lighting may be required as a visual effect in a signboard or a specific range in the store.

  In such a case, in order to adjust the intensity of the irradiation light for each region where the required illuminance differs on the irradiated surface, it is considered to converge or diffuse the light source light using a lens or a plurality of reflecting mirrors. It is done.

  In addition, by interposing a light shield in a part of the optical path from the light source to the irradiated surface, a part of the light from the light source to the irradiated surface is blocked, or the light is directed to the optical path from the light source to the irradiated surface. By diffusing the light from the light source toward the irradiated surface by interposing a diffuser plate, etc., the intensity of the irradiated light can be adjusted for each region with different required illuminance within the irradiated surface. Conceivable.

  However, when a lens or a plurality of reflecting mirrors are used, the number of parts of the lighting device increases and the manufacturing cost increases. When a shielding object or a light diffusing plate is interposed in a part of the optical path, an effective light flux loss of the light source light occurs.

  Therefore, it is conceivable to adjust the intensity of the irradiation light for each region having different illuminances required within the irradiated surface, depending on the shape of the light reflecting surface of the reflecting member. In the illumination device such as the lighting fixture disclosed in 2, the irradiated surface is irradiated by the direct light directly incident on the irradiated surface from the light source and the reflected light reflected on the mirror surface portion and incident on the irradiated surface. Depending on the shape of the light-reflecting surface of the reflecting member, even if an attempt is made to form a bright region and a dark region due to the difference in irradiation intensity on the surface to be irradiated, light and dark including a bright (strong irradiation) region and a dark (weak irradiation) region (Strength) There is a problem that the pattern cannot be adjusted with accuracy by the shape of the light reflecting surface of the reflecting member.

  The present invention has been made in order to solve the above-described conventional problems, and the illuminance on the irradiated surface is reduced to the required illuminance while avoiding an increase in the number of components and loss of light flux of the light source light. A simple configuration that can be adjusted accurately for each of the different areas, and thus can control the range of the bright (strongly irradiated) region and the dark (weakly irradiated) region on the irradiated surface with high accuracy. An object of the present invention is to provide a light source device with high light source light utilization efficiency.

  A light source device according to the present invention is a light source device including a light source member including at least one light source that emits light source light, and a reflection member that reflects the light source light toward an irradiated surface, wherein the light source member is Shielding the direct light that is the light source emitted from the light source toward the irradiated surface so that only the reflected light obtained by the reflection of the light source light by the reflecting member is incident on the irradiated surface The above object is achieved thereby.

  According to the present invention, in the light source device, the light source member includes a plurality of light sources arranged along a reference direction, and a light reflection surface of the reflection member is curved in a plane perpendicular to the reference direction. It is preferable to have a plurality of reflective regions having a curved shape, and at least one curved shape of the plurality of reflective regions is different from the curved shape of the other reflective regions.

  In the light source device according to the aspect of the invention, the light reflection surface of the reflection member includes a plurality of reflection regions having a radius of curvature in a plane perpendicular to the reference direction, and at least one curvature radius of the plurality of reflection regions. Is preferably different from the radius of curvature of the other reflective regions.

  In the light source device according to the aspect of the invention, a curved shape in a plane perpendicular to the reference direction of each of the plurality of reflection regions is defined by a differentiable function, and the light reflection surface of the reflection member is It is preferable that the shape is indistinguishable at a boundary position between two adjacent reflection regions among the plurality of reflection members.

  According to the present invention, in the light source device, a curved shape in a plane perpendicular to the reference direction on the light reflection surface of the reflection member is such that a boundary portion between the two adjacent reflection regions is relative to a peripheral region of the boundary portion. The shape is preferably concave.

  According to the present invention, in the light source device, a curved shape in a plane perpendicular to the reference direction on the light reflection surface of the reflection member is such that a boundary portion between the two adjacent reflection regions is relative to a peripheral region of the boundary portion. It is preferable that the shape protrudes.

  In the light source device according to the aspect of the invention, the light reflection surface of the reflection member includes a plurality of reflection regions, and each of the plurality of reflection regions includes a paraboloid, a plane, an ellipsoid, a sphere, and an aspheric surface. It is preferable to have a surface shape selected from the group consisting of:

  According to the present invention, in the light source device, the curved shape of the light reflecting surface of the reflecting member is a basic curved property that defines a curved shape of the light reflecting surface of the elliptical mirror as a curved property of the entire light reflecting surface; The curved surface shape of the elliptical mirror is different from the basic curved property as the local curved characteristic of the light reflecting surface, or the curved surface shape of the same kind as the light reflecting surface of the elliptical mirror or the curved surface shape of the light reflecting surface of the elliptical mirror. It is preferably defined by the local curvature characteristics that define the curved surface shape.

  In the light source device according to the aspect of the invention, the light source is disposed so that a light emission surface of the light source faces a side opposite to the irradiated surface, and the reflection member faces the light emission surface of the light source. And a light reflecting surface that reflects the light source light emitted from the light source toward the irradiated surface, and the light shielding unit includes a light source mounting table on which the light source is mounted, and the light source mounting. It is preferable that the light source plate includes a light shielding plate disposed on the mounting table so as to surround the light source, and the direct light is blocked by the light source mounting table and the light shielding plate.

According to the present invention, in the light source device, the light source is preferably an LED light source.
In the light source device according to the aspect of the invention, it is preferable that the light source light is visible light or ultraviolet light.

  According to the present invention, it is possible to accurately adjust the illuminance on the irradiated surface for each region having different required illuminance while avoiding an increase in the number of parts and loss of the light beam of the light source light. Realizing a light source device that can control the range of a bright (strongly irradiating) region and a dark (weakly irradiating) region on the surface to be irradiated with high accuracy with a simple configuration and capable of accurately controlling a light source light it can.

FIG. 1 is a perspective view illustrating a light source device according to Embodiment 1 of the present invention. FIG. 2 is a diagram conceptually showing an irradiation state by the light source device according to Embodiment 1 of the present invention. FIG. 3 is a schematic cross-sectional view illustrating the light source member of the light source device according to the first embodiment. FIG. 4 is a side view for explaining a reflecting member main body (reflecting mirror) constituting the reflecting member of the light source device according to the first embodiment. FIG. 5 is a front view for explaining a reflecting member main body (reflecting mirror) constituting the reflecting member of the light source device according to the first embodiment. FIG. 6 is a side view showing the positional relationship between the light source member and the reflecting member in the light source device according to the first embodiment. FIG. 7 is a schematic front view illustrating the reflecting member of the light source device according to the second embodiment of the invention. FIG. 8 is an exploded front view illustrating the reflecting member of the light source device according to the second embodiment of the present invention. FIG. 9 is a perspective view showing a main part of a main body constituting unit constituting a reflecting member main body of the light source device according to Embodiment 2 of the present invention. FIG. 10 is a perspective view showing another main part of the main body constituting unit constituting the reflecting member main body of the light source device according to Embodiment 2 of the present invention. FIG. 11 is an enlarged cross-sectional view (FIGS. 11A to 11C) showing a boundary portion between adjacent reflection regions in the reflection member of the light source device according to Embodiment 1 of the present invention.

Embodiments of the present invention will be described below with reference to the drawings.
(Embodiment 1)
FIG. 1 is a perspective view illustrating a light source device (illumination device) according to Embodiment 1 of the present invention. FIG. 2 is a diagram conceptually illustrating an illumination state by the light source device of the first embodiment. FIG. 3 is a schematic cross-sectional view illustrating the light source member of the light source device according to the first embodiment. 4 and 5 are a side view and a front view for explaining the reflecting member main body (reflecting mirror) constituting the reflecting member of the light source device according to the first embodiment. FIG. 6 is a side view showing the positional relationship between the light source member and the reflecting member in the light source device according to the first embodiment.

  The light source device 1 shown in FIG. 1 includes a light source member 2 including a light source 35 that emits visible light as the light source light Ls, and a reflection member 20 that reflects the light source light Ls toward the irradiated surface Rp. . Here, the light source member 2 emits the light source light emitted from the light source 35 toward the irradiated surface Rp so that only the reflected light Lr obtained by the reflection of the light source light Ls by the reflecting member 20 enters the irradiated surface Rp. The light shielding part which shields the direct light Ld which is is. In FIG. 2, R1 is a region with a high irradiation intensity on the irradiated surface Rp, and R2 is a region with a low irradiation intensity on the irradiated surface Rp.

  Here, the light source 35 is disposed such that the light emitting surface 35a faces the opposite side of the irradiated surface Rp, and the reflecting member 20 is disposed so as to face the light emitting surface 35a of the light source 35, A light reflecting surface 10 is provided that reflects the light source light Ls emitted from the light source 35 toward the irradiated surface Rp. The light shielding unit is disposed so as to surround the light source 35 on the light source mounting table 34, the light source mounting table 34 on which the light source 35 is mounted, the mounting table support unit 33 that holds the light source mounting table 34. The light shielding plate 37 is configured to be directly shielded from the light Ld by the mounting table support portion 33 and the light shielding plate 37. Here, an LED light source is used as the light source. However, the light source is not limited to this, and may be a plasma light source or the like.

  A plurality of light sources 35 in the light source member 2 are arranged along the reference direction X, and the light reflecting surface 10 of the reflecting member 20 has a different curved shape in a plane (vertical surface) Y perpendicular to the reference direction X. It includes a plurality of reflective areas.

  In the present invention, the light reflecting surface 10 of the reflecting member 20 includes a first reflecting region Rf1 having a first curved shape curved in a surface (vertical surface) Y perpendicular to the reference direction X, and a reference Although it is essential to have at least a second reflection region Rf2 having a second curved shape different from the first curved shape, which is curved in a plane (vertical plane) Y perpendicular to the direction X, As described below, three or more, for example, six reflective regions Rf1 to Rf6 may be included.

  Here, the plurality of light sources 35 arranged along the reference direction form a linear light source body 2a, and the curved shape of the light reflecting surface 10 of the reflecting member 20 in the vertical plane Y is the reflecting member 20. The light reflecting surface 10 has an elliptical shape surrounding one side of the linear light source body 2a.

  Further, the curved shape in the vertical plane Y of the light reflecting surface of each reflecting region is defined by a differentiable function, and the curved shape in the vertical surface Y of the light reflecting surface 10 of the reflecting member 20 is adjacent. At the boundary position (boundary portion) 17 between the two reflection areas, the shape cannot be differentiated.

  For example, the curved shape in the vertical plane Y of the light reflecting surface (first reflecting surface) 11 of the first reflecting region Rf1 is defined by a differentiable first function, and the second reflecting region Rf2 The curved shape of the light reflecting surface (second reflecting surface) 12 in the vertical surface Y is defined by a differentiable second function, and is in the vertical surface Y of the light reflecting surface 10 of the reflecting member 20. The curved shape at is a shape that cannot be differentiated at the boundary position (boundary portion) 17 between the first reflection region Rf1 and the second reflection region Rf2. Further, the curved shape in the vertical plane Y of the light reflecting surface 10 is such that the boundary portion between two adjacent reflection regions, for example, the boundary portion 17 between the first reflection region Rf1 and the second reflection region Rf2 is the periphery thereof. The shape is recessed from the part. However, the curved shape in the vertical plane Y of the light reflecting surface 10 may be a shape in which the boundary portion 17 between the first reflecting region Rf1 and the second reflecting region Rf2 protrudes from the peripheral portion.

  More specifically, here, the light reflecting surface 10 of the reflecting member 20 has first to sixth reflecting regions Rf1 to Rf6 as shown in FIG. 5, and the reflecting surface 11 of each reflecting region. The curved shape of ˜16 is a shape in which the radius of curvature is set in the vertical plane Y in accordance with the light / dark pattern required on the irradiated surface Rp. The light reflecting surface 10 has a structure in which metal or the like is deposited or plated.

  However, the light reflecting surface 10 of the reflecting member 20 is not limited to the above. For example, the light reflecting surface 10 of the reflecting member 20 has a basic bending characteristic that defines the curved shape of the light reflecting surface of the elliptical mirror as a bending characteristic of the entire light reflecting surface, and a local bending characteristic of the light reflecting surface. The curved surface shape of the elliptical mirror is different from the curved shape of the light reflecting surface of the elliptical mirror, or the curved surface shape of the curved surface of the elliptical mirror is different from the curved shape of the curved surface of the elliptical mirror. The curved shape of the light reflecting surface of the reflecting member may be defined. Further, the first to sixth reflection regions Rf1 to Rf6 of the light reflecting surface 10 of the reflecting member 20 are formed from a group consisting of a paraboloid, a plane, an ellipsoid, a sphere, and an aspheric surface as the shapes of the respective reflection surfaces. It may have a selected shape.

  Hereinafter, a detailed configuration of the light source device 1 of the first embodiment will be described.

  First, the light source member 2 will be described.

  For example, the light source member 2 includes a linear light source body 2a and a socket 39 to which the linear light source body 2a is attached. Here, as shown in FIG. 1 and FIG. 3, the linear light source body 2 a has a long light source mounting table 34 provided with an electric circuit pattern, and heat conduction such as aluminum that supports the light source mounting table 34. A long mounting base support 33 formed of a metal having excellent properties, a plurality of LED elements (light sources) 35 fixed to the light source mounting base 34, and the mounting so as to surround the plurality of LED elements 35. A light shielding plate 37 attached to the mounting table support 33 and a cover member 36 attached to the light shielding plate 37 are provided. Here, the cover member 36 is provided as necessary in structure. The light shielding plate 37 also serves as an attachment portion for the cover member 36, and the cover member 36 is fitted to the light shielding plate 37. A terminal pin (not shown) for applying a driving voltage to the LED element 35 is provided at the end of the mounting table support 33 in the longitudinal direction. This terminal pin is connected to a socket 39 attached to the inner surface of the side plate 23 of the reflecting member 20.

  Here, although the linear light source body 2a has a long configuration, the light source body may be a spherical shape including a plurality of light sources. Moreover, as a light emitter such as an LED element used as a light source, a light emitter having a sufficient length may be used. The cover member 36 is preferably formed of a transparent resin such as polycarbonate.

  Next, the reflecting member 20 will be described.

  The reflecting member 20 includes a reflecting member main body (reflecting mirror) 4 that forms the light reflecting surface 10, a pedestal 42 that supports the reflecting member main body (reflecting mirror) 4, and side plates disposed on both sides of the reflecting member main body 4. 23. A square mounting hole 27 (see FIG. 9) for mounting the socket 39 of the linear light source body 2a described above is formed on the inner surface side of the side plate 23. Here, the reflecting member main body 4 functions as a reflecting mirror.

  Moreover, as shown in FIGS. 1 and 4 to 6, the reflecting member main body 4 serving as a reflecting mirror has a light reflecting surface 10 curved in a concave shape in the vertical plane Y so as to surround the linear light source body 2 a. It has a shape. The reflecting member main body 4 functioning as the reflecting mirror has a light reflecting surface 10 on the surface (inner surface) on the linear light source body 2a side. As described above, the light reflecting surface 10 can include a plurality of reflecting regions having different curved shapes such as curvature.

  For example, as shown in FIG. 5, the light reflecting surface 10 has a plurality of strip-like reflecting areas extending in the lateral direction (horizontal direction) X. For example, these reflecting areas are formed as shown in FIG. In order from the top, there are a first reflection region Rf1, a second reflection region Rf2, a third reflection region Rf3, a fourth reflection region Rf4, a fifth reflection region Rf5, and a sixth reflection region Rf6. The curvature radii of the reflection surfaces 11 to 16 of these first to sixth reflection regions Rf1 to Rf6 can be arbitrarily set within the vertical plane Y, for example, but the curvature radii of adjacent reflection regions are different. Designed. Accordingly, there may be a case where a concave portion or a protruding portion is formed at the boundary portion 17 between the adjacent reflection regions.

  As shown in FIG. 11A, the recess formed in the boundary portion 17 is a portion that extends along the linear light source body 2a and is recessed with respect to the peripheral region. As shown in FIG. 11B, the protrusion formed on the boundary portion 17 is a portion that extends along the linear light source body 2a and protrudes from the peripheral region. Further, as shown in FIG. 11C, the boundary 17 of the recess and the boundary 17 of the protrusion may coexist.

  As each reflection region, for example, the shape on the vertical plane Y can be a part of an ellipse, a part of a circle, a part of a parabola, a part of a hyperbola, a straight line, or the like. Furthermore, the first to sixth reflection regions Rf1 to Rf6 can be at least one mirror surface selected from the group consisting of a parabolic mirror, a plane mirror, an elliptical mirror, a spherical mirror, and an aspherical mirror. By an arbitrary combination of adjacent reflection regions in the sixth reflection regions Rf1 to Rf6, a concave portion that is recessed with respect to the peripheral region or a protrusion that protrudes with respect to the peripheral region is formed at the boundary portion 17 of the adjacent reflection region. The

  Further, in the first embodiment, the reflecting member body 4 that functions as a reflecting mirror is formed as a single body.

  That is, when the reflecting member body 4 that functions as a reflecting mirror is formed as a single body, for example, the reflecting member body 4 can be molded by injection molding using a mold. Alternatively, the reflecting member main body 4 can be produced by forming a long member by extrusion molding and then cutting the formed long member into necessary dimensions as appropriate.

  Further, when the reflecting mirror 4 is integrally formed, the reflecting member main body 4 and its pedestal 42 can be integrally formed by injection molding using a single mold. In addition, when extrusion molding is used, it is possible to produce a unit in which the reflecting member main body 4 and its pedestal 42 are integrated.

  Next, the function and effect will be described.

  Of the light emitted from the light source member 2, the direct light Ld directed to the irradiated surface Rp is blocked by the mounting table support portion 33 and the light shielding plate 37 (see FIG. 3), and is incident on the irradiated surface Rp. There is no. On the other hand, of the light emitted from the light source member 2, the light traveling toward the reflecting member 20 is reflected by the light reflecting surface 10 of the reflecting member 20 and travels toward the irradiated surface Rp (see FIG. 2).

  At this time, the irradiated surface Rp is irradiated with an irradiation pattern set according to the radius of curvature of the light reflecting surfaces 11 to 16 of the reflecting regions Rf1 to Rf6 formed on the light reflecting surface 10.

  For example, for a high illuminance region where the illuminance of the irradiated surface Rp is desired to be set high, the light reflected from the plurality of reflection regions is set to irradiate the high illuminance region, or reflection corresponding to the high illuminance region. What is necessary is just to make the curvature radius of the light reflection surface of an area | region small.

  On the other hand, for the low illuminance area where the illuminance is desired to be set low in the irradiated surface Rp, the reflected light from the plurality of reflective areas is set not to irradiate the low illuminance area, or the reflective area corresponding to the low illuminance area What is necessary is just to enlarge the curvature radius of.

  In particular, when a recessed portion or protruding protrusion that is recessed with respect to the peripheral region is formed at the boundary portion 17 between the first reflecting region 11 and the second reflecting region 12, the recessed portion or the protruding portion causes irradiation. It is possible to clarify the boundary between a bright (strong irradiation) region and a dark (weak irradiation) region of the surface Rp.

  Thus, according to the light source device 1 according to the first embodiment, in the light source member 2, only the reflected light Lr obtained by the reflection of the light source light Ls from the light source member 2 by the reflecting member 20 is incident on the irradiated surface Rp. As described above, since there is a light-shielding portion that blocks the direct light Ld emitted from the light source toward the irradiated surface Rp, a bright (strong irradiation) region is formed on the irradiated surface Rp depending on the shape of the light reflecting surface of the reflecting member. It is possible to accurately adjust a light and dark pattern including a dark (light-irradiated) region.

  That is, the light distribution characteristics (the curvature and shape of the light reflecting surface) of the reflecting member 20 are directly reflected on the irradiated surface without being affected by the direct light from the light source. Irradiation of the pattern according to the unnecessary portion can be performed with high accuracy. As a result, it is not necessary to use a lens or a plurality of reflecting mirrors as in the prior art, and the illuminance on the irradiated surface can be controlled without interposing a shield or a light diffusing plate in the optical path. As a result, the cost of the product can be reduced and the power consumption can be reduced.

  Moreover, unlike the case where an irradiation pattern is formed by combining many optical components, the irradiation pattern can be performed with one light source member and one reflection member, so that interference of light can be avoided and a smooth irradiation pattern can be realized.

  Therefore, the working environment of the factory can be improved, and the safety of parks, streets, etc. can be secured and improved. In addition, a visual effect by lighting such as a signboard or a bulletin board can be produced.

  In particular, the shapes of the reflecting surfaces 11 to 16 of the first to sixth reflecting regions Rf1 to Rf6 constituting the reflecting member 20 are set according to the light / dark pattern required on the irradiated surface Rp. On the surface Rp, illumination according to a required light / dark (strong / weak) pattern can be performed by reflected light from each reflective region. Therefore, it is possible to accurately control the irradiation pattern with only one light source device without using a plurality of irradiation tools.

  Furthermore, since the light distribution characteristic of the reflecting member is directly reflected on the irradiated surface, a natural light / dark pattern can be expressed, which is excellent from a decorative viewpoint.

  In the first embodiment, as shown in FIGS. 1, 2, and 4 to 5, the reflecting member main body 4 and the pedestal 42 are integrally formed, but the reflecting member main body and the pedestal are separately formed. You may make it connect with an adhesive agent, a fixing tool, etc. by comprising with a member.

In the first embodiment, the reflecting member body 4 that functions as a reflecting mirror is formed as a single unit. However, the reflecting member body 4 is a unit (body unit) that constitutes the reflecting member body 4. It may be assembled by combining.
(Embodiment 2)
7 and 8 are diagrams illustrating a light source device (illumination device) according to Embodiment 2 of the present invention. 9 and 10 are perspective views showing the main part of the main body constituting unit constituting the reflecting member main body of the light source device according to the second embodiment.

  The light source device according to Embodiment 2 of the present invention includes a reflecting member body 4a assembled by using a plurality of body constituting units 41 instead of the reflecting member body 4 created by integral molding in the light source device of Embodiment 1. It is.

  Specifically, as shown in FIGS. 7 and 8, a plurality of, for example, six main body constituting units 41 (see FIGS. 9 and 10) are arranged in the lateral direction, and bolts formed on each main body constituting unit 41. By passing the bolt 30 through the insertion hole 45 and fastening with the nut 31, the six main body constituting units 41 are connected to each other to form one reflecting member main body 4a. Thereafter, the side plates 23 are arranged outside the six main body constituting units 41, and the side plates 23 are attached to the main body constituting units 41 at both ends by using a fixing tool such as a screw. Here, the side plate 23 is composed of an inner plate 24 and an outer plate 25, and an attachment hole 27 for attaching a socket of the linear light source body 2a is formed in the inner plate 24.

  Here, each main body constituting unit 41 is formed by resin molding by injection molding or the like, and integrally includes reflection areas constituting the respective light reflecting surfaces 11 to 16 of the reflecting member main body. The inner surface (light reflecting surface) 10 of the main unit 41 has a structure in which metal or the like is vapor-deposited or plated.

  Further, here, the main body constituting unit 41 and the pedestal 42 are constituted by different members and connected by an adhesive, a fixing tool or the like. However, the main body constituting unit 41 and the base 42 may be integrally formed.

  In the light source device according to the second embodiment having such a configuration, in addition to the effects of the light source device according to the first embodiment, the reflecting mirror 4a, which is the reflecting member main body, is configured by connecting a plurality of main body constituting units 41. Therefore, there is an effect that the size of the light source device can be adjusted by the number of the main body constituting units 41.

  In addition, in each said embodiment, although the light reflection surface 10 of the reflection member 20 has the 1st-6th reflection area | region, the number of the reflection area | regions can be set arbitrarily. For example, only the first and second reflection regions 12 may be included, or three or more reflection regions may be included.

  Furthermore, in Embodiment 2 described above, the main body constituting unit is shown as one that integrally includes the reflective areas constituting the respective light reflecting surfaces 11 to 16 of the reflecting member main body. However, the main body constituting unit includes each light reflecting surface 11. It may be configured by combining independent region constituting units for each of the reflective regions corresponding to ˜16.

  Moreover, although each said embodiment demonstrated the case where the light source light of a light source device was visible light, you may use ultraviolet light (ultraviolet light) as light source light. In this case, according to the light source device (ultraviolet irradiation device) of the present invention, it is possible to safely irradiate only a specific range with ultraviolet rays without requiring a light shielding cover for shielding ultraviolet rays. It can also be used to maintain the hygienic environment of the range.

  For example, a specific range can be sterilized and deodorized with high accuracy by irradiating ultraviolet rays as light source light to a place where sterilization and deodorization are required in a medical facility. Specifically, deodorization and sterilization are performed by selectively irradiating ultraviolet rays to hospital facilities such as beds and air in patients' waiting rooms and hospital rooms so that patients and medical workers are not exposed to ultraviolet rays. It can also be done.

  When ultraviolet rays are used as the light source light, an element that efficiently emits ultraviolet rays around 260 nm (especially 253.7 nm) having a high bactericidal action is used. For example, an LED element that generates such ultraviolet rays can be used, and a diamond LED is an example.

  Furthermore, the light source device that generates ultraviolet rays as the light source light of the present invention can be applied to the following uses.

  For example, a light source device for sterilizing medical products such as sterilization of infusion bags and pharmaceutical containers and exterior materials before entering a clean room; or a light source device for sterilizing food packaging; It is a light source device for ultraviolet sterilization of daily necessities such as instruments, clothes, gloves and toothbrushes.

  When the light source device of the present invention in which the light source light is ultraviolet light is used, the specific range of these parts can be sterilized more strongly, and the sterilization intensity can be accurately controlled so as not to sterilize other regions.

  In the field of the light source device, the present invention is capable of accurately adjusting the illuminance on the irradiated surface for each region having different required illuminance while avoiding an increase in the number of components and loss of light source light flux. This makes it possible to accurately control the range of a bright (strongly irradiated) region and a dark (weakly irradiated) region on the surface to be illuminated. Can be realized.

DESCRIPTION OF SYMBOLS 1 Light source device 2 Light source member 2a Linear light source body 4, 4a Reflective member main body (reflecting mirror)
DESCRIPTION OF SYMBOLS 10 Light reflection surface 11-16 1st-6th reflection surface 17 Boundary part 20 Reflective member 23 Side plate 33 Mounting stand support part 34 Light source mounting base 35 Light source (LED element)
35a Light emitting surface 36 Cover member 37 Light shielding plate 39 Socket 42 Base Ld Direct light Lr Reflected light Ls Light source light Rf1 to Rf6 First to sixth reflecting regions Rp Irradiated surface

Claims (11)

A light source device having a light source member including at least one light source that emits light source light, and a reflecting member that reflects the light source light toward an irradiated surface,
The light source member is light source light directly emitted from the light source toward the irradiated surface so that only reflected light obtained by reflection of the light source light by the reflecting member is incident on the irradiated surface. A light source device having a light blocking portion that blocks light. The light source member has a plurality of light sources arranged along a reference direction,
The light reflecting surface of the reflecting member has a plurality of reflecting regions having a curved shape curved in a plane perpendicular to the reference direction,
The light source device according to claim 1, wherein at least one curved shape of the plurality of reflective regions is different from curved shapes of other reflective regions.   The light reflecting surface of the reflecting member has a plurality of reflecting areas having a radius of curvature in a plane perpendicular to the reference direction, and at least one of the plurality of reflecting areas is a radius of curvature of the other reflecting area. The light source device according to claim 2, which is different from the above. A curved shape in a plane perpendicular to the reference direction of each of the plurality of reflection regions is defined by a differentiable function,
4. The light source device according to claim 2, wherein a light reflection surface of the reflection member has a shape that cannot be differentiated at a boundary position between two adjacent reflection regions of the plurality of reflection members.   The curved shape in a plane perpendicular to the reference direction on the light reflecting surface of the reflecting member is a shape in which a boundary portion between the two adjacent reflecting regions is recessed with respect to a peripheral region of the boundary portion. The light source device according to 1.   6. The curved shape in a plane perpendicular to the reference direction on the light reflecting surface of the reflecting member is a shape in which a boundary portion between the two adjacent reflecting regions protrudes from a peripheral region of the boundary portion. The light source device according to 1. The light reflecting surface of the reflecting member has a plurality of reflecting regions,
2. The light source device according to claim 1, wherein each of the plurality of reflection regions has a surface shape selected from the group consisting of a paraboloid, a plane, an ellipsoid, a spherical surface, and an aspheric surface.   The curved shape of the light reflecting surface of the reflecting member includes a basic curved property that defines the curved shape of the light reflecting surface of the elliptical mirror as a curved property of the entire light reflecting surface, and a local curved property of the light reflecting surface. Different from the basic curve characteristic, the curved surface shape of the elliptical mirror reflecting surface is the same type of curved surface shape or a local curved characteristic defining a curved surface shape of a type different from the curved surface shape of the elliptical mirror light reflecting surface; The light source device according to claim 1, which is defined by: The light source is arranged so that the light emission surface of the light source faces the opposite side of the irradiated surface,
The reflecting member is disposed so as to face the light emitting surface of the light source, and has a light reflecting surface that reflects the light source light emitted from the light source toward the irradiated surface,
The light shielding unit includes a light source mounting table on which the light source is mounted, and a light shielding plate disposed on the light source mounting table so as to surround the light source, and the direct light is transmitted by the light source mounting table and the light shielding plate. The light source device according to claim 1, wherein the light source device is configured to block the light source.   The light source device according to claim 1, wherein the light source is an LED light source. The light source device according to any one of claims 1 to 10, wherein the light source light is visible light or ultraviolet light.

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