JP2007173177A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a function for making a certain object visible by irradiating it with visible light emitted from a phosphor. <P>SOLUTION: A lighting device includes: ultraviolet LED board assemblies 1 for emitting ultraviolet light; the phosphor 2a for emitting visible light by being excited by the ultraviolet light from the ultraviolet LED board assemblies 1; and a visible light source 2 composed by applying or mixing the phosphor 2a thereto/therein. The lighting system is equipped with a reflector 3 for controlling the distribution of the visible light from the visible light source 2. Preferably, the visible light source 2 is arranged on a focal point P of a reflecting surface of the reflector 3 or in the vicinity thereof. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an illuminating device including a phosphor that is excited by ultraviolet light and emits visible light, and in particular, to improve the function of making a phosphor appear visible by visible light emitted from the phosphor. It is related with the illuminating device which can do.

  Specifically, the present invention can improve the function of making a visible object illuminated by the visible light emitted by the phosphor, particularly when the visible light emitted by the phosphor is not controlled in light distribution. The present invention relates to a lighting device that can be used.

  2. Description of the Related Art Conventionally, there has been known a phosphor lighting device (illumination device) including an ultraviolet LED light source that irradiates ultraviolet rays, a phosphor that emits light by ultraviolet rays from the ultraviolet LED light source, and a sheet coated with the phosphor. As an example of this type of phosphor lighting fixture (illuminating device), for example, there is one described in Japanese Patent Application Laid-Open No. 2002-133938.

  In the phosphor illuminator (illumination device) described in Japanese Patent Laid-Open No. 2002-133938, an ultraviolet LED light source is attached to the tip of a support column, and a sheet coated with the phosphor is attached to the middle of the support column. It is placed on the book stand. Further, ultraviolet rays are irradiated from the ultraviolet LED light source toward the reading table.

  Thereby, in the phosphor illuminator (illumination device) described in Japanese Patent Laid-Open No. 2002-133938, the phosphor applied to the sheet on the reading table is caused to emit light by ultraviolet rays from the ultraviolet LED light source. . As a result, the phosphor illuminator (illumination device) described in Japanese Patent Application Laid-Open No. 2002-133938 functions as illumination that produces a space.

  However, in the phosphor lighting fixture (illumination device) described in Japanese Patent Laid-Open No. 2002-133938, light emitted from the phosphor is emitted as it is without being subjected to light distribution control. Therefore, although the phosphor lighting fixture (illumination device) described in Japanese Patent Application Laid-Open No. 2002-133938 functions as illumination that produces a space, illumination that allows a phosphor to emit light to make it appear to be illuminated. Cannot function as well.

  Conventionally, there is an effect lighting device that includes an LED that emits ultraviolet light, a fluorescent pigment that emits light when excited by ultraviolet light from the LED, and a shelf board that is formed by kneading the fluorescent pigment. . An example of this type of effect lighting device is described in, for example, Japanese Patent Application Laid-Open No. 2004-103912.

  In the effect lighting device described in Japanese Patent Application Laid-Open No. 2004-103912, shelf boards formed by kneading fluorescent pigments are attached to walls of bathrooms, washrooms, toilets, kitchens, and the like. Furthermore, LEDs that emit ultraviolet light are arranged around the shelf or embedded in the shelf.

  Thereby, in the effect lighting device described in Japanese Patent Application Laid-Open No. 2004-103912, the phosphors kneaded in the shelf plate are excited to emit light by the ultraviolet rays from the LEDs. As a result, the effect lighting device described in Japanese Patent Application Laid-Open No. 2004-103912 functions as illumination that produces space.

  However, also in the effect lighting device described in Japanese Patent Application Laid-Open No. 2004-103912, the light emitted from the phosphor is emitted as it is without being subjected to light distribution control. Therefore, although the effect lighting apparatus described in Japanese Patent Application Laid-Open No. 2004-103912 also functions as illumination that produces a space, it sufficiently functions as illumination that makes certain objects appear to be illuminated by light emitted from a phosphor. I can't.

JP 2002-133938 A JP 2004-103912 A

  In view of the above problems, an object of the present invention is to provide an illuminating device capable of improving the function of making a certain object appear to be illuminated by visible light emitted from a phosphor.

  More specifically, the present invention provides an illumination device that can improve the function of making a certain object appear to be illuminated by the visible light emitted from the phosphor, compared to the case where the visible light emitted from the phosphor is not subjected to light distribution control. The purpose is to provide.

  According to the first aspect of the present invention, an ultraviolet light source that irradiates ultraviolet light, a phosphor that is excited by ultraviolet light from the ultraviolet light source and emits visible light, and the phosphor are applied, or An illuminating device comprising a visible light source configured by kneading, and provided with a visible light control means for controlling light distribution of visible light from the visible light source is provided. .

  According to a second aspect of the present invention, the visible light control means is configured by a reflector having a concave reflecting surface for reflecting visible light from the visible light source, and the focal point of the reflecting surface of the reflector or The illumination device according to claim 1, wherein the visible light source is disposed in the vicinity thereof.

  According to a third aspect of the present invention, the visible light source main body portion to which the phosphor is applied or kneaded, the reflector, and the ultraviolet light source support means for supporting the ultraviolet light source are combined. The illumination device according to claim 2, wherein the illumination device is formed by a member.

  According to the fourth aspect of the present invention, there is provided the illumination device according to the third aspect, wherein an ultraviolet light passage hole is formed in the reflector.

  According to a fifth aspect of the present invention, there is provided the illumination apparatus according to the fourth aspect, wherein the ultraviolet light source is supported by an outer surface of the reflector.

  According to the invention described in claim 6, the outer surface of the reflector is formed so that the normal line of the outer surface of the reflector in the portion supporting the ultraviolet light source is directed to the visible light source body portion. An illumination device according to claim 5 is provided.

  According to invention of Claim 7, the said fluorescent substance is apply | coated, or the visible light source main-body part with which it is kneaded, and for guiding the ultraviolet light radiated | emitted from the said ultraviolet light source to the said visible light source main-body part The illumination device according to claim 2, wherein the light guide part and the visible light source body part supporting means for supporting the visible light source body part are formed by a single member.

  According to invention of Claim 8, it comprises by apply | coating the ultraviolet light source which irradiates ultraviolet light, the fluorescent substance excited by the ultraviolet light from the said ultraviolet light source, and light-emitting visible light, and the said fluorescent substance. In a lighting device comprising a visible light source, a reflector having a concave reflecting surface is provided as visible light control means for controlling the distribution of visible light from the phosphor, and the phosphor is used as a reflecting surface of the reflector. An illuminating device is provided that is applied to the above.

  In the illumination device according to claim 1, visible light control means for controlling light distribution of visible light from a visible light source configured by applying or kneading a phosphor is provided. . Preferably, the visible light control means is constituted by a reflector having a concave reflecting surface for reflecting visible light from a visible light source. More preferably, a visible light source is disposed on or near the focal point of the reflecting surface of the reflector.

  Therefore, according to the illuminating device of Claim 1 and 2, the function which makes a certain object illuminate by the visible light which the fluorescent substance light-emitted rather than the case where the visible light which the fluorescent substance emitted does not carry out light distribution control. Can be improved.

  In the illuminating device according to claim 3, a visible light source main body portion to which the phosphor is applied or kneaded, a reflector having a concave reflecting surface for reflecting visible light from the visible light source, and The ultraviolet light source support means for supporting the ultraviolet light source is formed by one member.

  Therefore, according to the illumination device of the third aspect, it is possible to improve the function of making a fluorescent object visible by illuminating a certain object without increasing the number of parts. That is, according to the illumination device of the third aspect, it is possible to improve the function of making a fluorescent object visible by illuminating a certain object without increasing the assembly cost.

  In the illumination device according to claims 4 and 5, the ultraviolet light passage hole is formed in the reflector. Preferably, the ultraviolet light source is supported by the outer surface of the reflector. In other words, the ultraviolet light source is not supported by the reflecting surface of the reflector, but is supported by the outer surface opposite to the reflecting surface of the reflector. That is, the ultraviolet light source support means is constituted by the outer surface of the reflector.

  Therefore, according to the illumination device according to claims 4 and 5, a part of the reflecting surface of the reflector is occupied by the ultraviolet light source, and the visible light irradiated from the reflecting surface of the reflector is not functioned as the reflecting surface. A reduction in the amount of light can be suppressed.

  If the thickness of the reflector in the part that supports the ultraviolet light source is set to be uniform, the main optical axis of the ultraviolet light source supported by the outer surface of the reflector is oriented in a direction perpendicular to the reflecting surface of the reflector, and visible. The light source body part is no longer directed.

  In view of this point, in the illumination device according to claim 6, the outer surface of the reflector is formed such that the normal of the outer surface of the reflector in the portion supporting the ultraviolet light source is directed to the visible light source body portion. Specifically, the thickness of the reflector in the portion that supports the ultraviolet light source is set non-uniformly. Therefore, according to the illumination device of the sixth aspect, the main optical axis of the ultraviolet light source can be directed to the visible light source main body portion without the need to finely adjust and attach the ultraviolet light source to the reflector.

  In the illuminating device according to claim 7, a visible light source body part to which a phosphor is applied or kneaded, and a light guide part for guiding ultraviolet light emitted from the ultraviolet light source to the visible light source body part The visible light source body portion supporting means for supporting the visible light source body portion is formed by a single member.

  Specifically, in the illumination device according to claim 7, the visible light source body portion supporting means for arranging and supporting the visible light source body portion on or near the focal point of the reflecting surface of the reflector, and the ultraviolet light source radiates. The light guide part for guiding the ultraviolet light to the visible light source main body part is formed by one member.

  Therefore, according to the illuminating device of the seventh aspect, the visible light source body part supporting means is provided with the visible light source body part supporting means separately from the light guide part, and the visible light emitted from the visible light source is visible light source body part supporting means. It is possible to reduce the risk of being blocked by the.

  That is, according to the illuminating device of the seventh aspect, it is possible to increase the irradiation amount of visible light and illuminate brightly, compared to the case where the visible light source body portion supporting means is provided separately from the light guide portion.

  In the illumination device according to the eighth aspect, visible light control means for controlling light distribution of the visible light from the phosphor is provided. Specifically, the visible light control means is constituted by a reflector having a concave reflecting surface for reflecting visible light from the phosphor. Therefore, according to the illuminating device of claim 8, the function of making a visible object illuminated by the visible light emitted by the phosphor is improved as compared with the case where the visible light emitted by the phosphor is not subjected to light distribution control. Can be made.

  Furthermore, in the illuminating device according to the eighth aspect, the phosphor is applied to the reflecting surface of the reflector. Therefore, according to the illumination device of the eighth aspect, it is possible to eliminate the necessity of providing the visible light source support means for supporting the visible light source configured by applying the phosphor separately from the reflector. it can. That is, the manufacturing cost can be reduced as compared with the case where the visible light source support means is provided separately from the reflector.

  That is, according to the illuminating device of claim 8, the visible light emitted from the phosphor is not subjected to light distribution control while suppressing the manufacturing cost as compared with the case where the visible light source support means is provided separately from the reflector. In addition, it is possible to improve the function of making a certain object appear to be illuminated by visible light emitted from the phosphor.

  Hereinafter, a first embodiment of the illumination device of the present invention will be described. 1-3 is sectional drawing of the illuminating device of 1st Embodiment. Specifically, FIG. 1 shows a state where ultraviolet light is not irradiated, FIG. 2 shows a state where ultraviolet light is irradiated, and FIG. 3 shows a state where visible light is irradiated. Yes.

  1 to 3, reference numeral 1 denotes an ultraviolet LED substrate assembly as an ultraviolet light source for irradiating ultraviolet light A having a wavelength of 410 nm or less, for example. Reference numeral 2 denotes a visible light source formed by applying a phosphor that is excited by ultraviolet light A from the ultraviolet LED substrate assembly 1 and emits visible light B.

  In the illumination device of the first embodiment, the visible light source 2 is configured by applying a phosphor. However, in the illumination device of the second embodiment, instead, a fluorescent material such as glass is used for fluorescence. The visible light source 2 can be configured by kneading the body.

  1 to 3, reference numeral 3 denotes a reflector for reflecting the visible light B from the visible light source 2. Reference numeral 4 denotes a support portion for supporting the visible light source 2. Reference numeral 5 denotes a lens portion, and P denotes a focal point of the reflecting surface of the reflector 3 (specifically, a focal line extending from the near side to the far side in FIGS. 1 to 3).

  In the illuminating device of the first embodiment, the lens unit 5 is configured by a through lens. However, in the illuminating device of the third embodiment, the lens unit 5 is instead provided on the upper surface, the lower surface, or both surfaces thereof. Fisheye cut, fisheye Fresnel, linear prism, flute cut unevenness, etc. can also be applied.

  Moreover, in the illuminating device of 1st Embodiment, the visible light source main-body part 2b which comprises a part of visible light source 2, the reflector 3, and the support part 4 are comprised by one member. FIG. 4 is a cross-sectional view showing the visible light source main body portion 2b, the reflector 3, and the support portion 4 that are formed of a single member. FIG. 5 is a perspective view of the visible light source body portion 2b, the reflector 3, and the support portion 4 as seen from the upper right side of FIG. 6 is a perspective view of the visible light source body portion 2b, the reflector 3, and the support portion 4 as viewed from the upper left side of FIG.

  4-6, 3a has shown the inner surface of the reflector 3 which comprises the reflective surface of the reflector 3. In FIG. In the illuminating device of 1st Embodiment, as shown in FIGS. 4-6, the inner surface 3a of the reflector 3 which functions as a reflective surface of the reflector 3 is comprised by the substantially parabolic column surface. In the illumination device of the fourth embodiment, instead, the inner surface 3a of the reflector 3 is configured by a free curved surface, a substantially flat surface, or the sectional curve (see FIG. 4) of the inner surface 3a of the reflector 3 is formed by an arc. It is also possible to configure, or the inner surface 3a of the reflector 3 can be configured by a plurality of surfaces.

  4-6, 3b is formed in the reflector 3 to allow the ultraviolet light A (see FIGS. 2, 5, and 6) emitted from the ultraviolet LED substrate assembly 1 (see FIG. 2) to pass therethrough. An ultraviolet light passage hole is shown. Reference numeral 3 c denotes an outer surface of the reflector 3. Reference numeral 3 d denotes a support region for supporting the ultraviolet LED substrate assembly 1.

  In the illumination device according to the first embodiment, as shown in FIGS. 4 to 6, the visible light source main body portion 2 b is formed in a substantially cylindrical shape, the reflector 3 is formed in a substantially parabolic column shape, and the support portion 4 is a substantially rectangular parallelepiped. They are formed in a shape and are constituted by one member.

  FIG. 7 is a diagram for explaining the visible light source 2 of the illumination device according to the first embodiment. In the illumination device of the first embodiment, as shown in FIG. 7, the visible light source 2 is configured by applying the phosphor 2 a to the visible light source main body portion 2 b formed integrally with the reflector 3. Yes. Although not shown, as described above, in the illumination device according to the second embodiment, the visible light source 2 is configured by kneading the phosphor 2a into the transparent visible light source main body portion 2b.

  Moreover, in the illuminating device of 1st Embodiment, as shown in FIG. 7, the visible light source 2 is extended to the back | inner side from the focal point (in detail, the near side of FIG. It is arranged on or near the focal line P).

  In the illumination device of the first embodiment, as shown in FIGS. 2, 5, 6 and 7, ultraviolet light from the ultraviolet LED substrate assembly 1 is directed toward the phosphor 2a applied to the visible light source body portion 2b. When A is irradiated, the phosphor 2a is excited by the ultraviolet light A. As a result, as shown in FIGS. 3 and 7, the phosphor 2a emits visible light B, and the visible light B from the phosphor 2a is light-distributed by the parabolic columnar reflecting surface of the reflector 3. Irradiate upward.

  Therefore, according to the illuminating device of 1st Embodiment, the thing (not shown) arrange | positioned on the upper side of FIG. 3 by the visible light B which the fluorescent substance 2a emitted rather than the case where the reflector 3 is not provided. It is possible to improve the function of making the light visible. In detail, according to the illuminating device of 1st Embodiment, not only the visible light source main-body part 2b but the whole surface of the parabolic columnar reflective surface (inner surface 3a) of the reflector 3 shines softly from the upper side of FIG. You can make it visible.

  Moreover, in the illuminating device of 1st Embodiment, as shown in FIG. 4, since the visible light source main-body part 2b, the reflector 3, and the support part 4 are formed with one member, without increasing a number of parts, The visible light B emitted from the phosphor 2a can improve the function of making an object (not shown) arranged on the upper side of FIG.

  Furthermore, in the illumination device of the first embodiment, as shown in FIGS. 3 to 6, an ultraviolet light passage hole 3 b is formed in the reflector 3, and the ultraviolet LED substrate assembly 1 is supported by the outer surface 3 c of the reflector 3. Yes. In other words, the ultraviolet LED substrate assembly 1 is not supported by the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3, but on the side opposite to the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3. It is supported by the outer surface 3c. That is, the support region 3 d for supporting the ultraviolet LED substrate assembly 1 is constituted by the outer surface 3 c of the reflector 3.

  Therefore, according to the illumination device of the first embodiment, a part of the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3 is occupied by the ultraviolet LED substrate assembly 1 and does not function as a reflecting surface. It can suppress that the quantity of visible light B (refer FIG. 3) irradiated from the parabolic columnar reflective surface (inner surface 3a) of the reflector 3 reduces.

  FIG. 8 is an enlarged cross-sectional view for explaining the support region 3d shown in FIGS. In FIG. 8, 1 a indicates a light source point of the ultraviolet LED substrate assembly 1, and 1 b indicates a contact surface of the surface of the ultraviolet LED substrate assembly 1 that is brought into contact with the outer surface 3 c of the reflector 3.

  In the illuminating device of the first embodiment, as shown in FIGS. 3 and 8, the focal point of the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3 (specifically, from the near side to the far side of FIGS. 3 and 8). Visible light B diffused radially from the focal line P) is reflected by the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3 and irradiated upward in FIGS. .

  That is, in the illumination device of the first embodiment, as shown in FIG. 8, the normal L2 of the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3 is equal to the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3. ) Is not directed to the focal point P, and forms an angle θa with respect to the incident light of the visible light B from the focal point P of the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3 and is visible upward in FIG. An angle θa is formed with respect to the reflected light of the light B.

  Therefore, if the thicknesses d1 and d2 of the reflector 3 in the support region 3d for supporting the ultraviolet LED substrate assembly 1 are set uniformly, the ultraviolet LED substrate assembly supported by the outer surface 3c of the reflector 3 is assumed. The main optical axis L3 of 1 coincides with the normal line L2, and the focal point P of the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3 is not directed.

  In view of this point, in the illumination device of the first embodiment, the normal line L1 of the outer surface 3c of the reflector 3 in the support region 3d for supporting the ultraviolet LED substrate assembly 1 is the reflector 3 as shown in FIG. The outer surface 3c of the reflector 3 is formed so as to be directed to the focal point P of the parabolic columnar reflecting surface (inner surface 3a). In detail, in the illuminating device of 1st Embodiment, the thickness d1, d2 of the reflector 3 in the support area | region 3d for supporting the ultraviolet LED board assembly 1 is set unevenly (d1> d2).

  Therefore, according to the illuminating device of the first embodiment, there is no need to finely adjust and attach the ultraviolet LED substrate assembly 1 to the reflector 3, and the main optical axis L3 of the ultraviolet LED substrate assembly 1 is a parabolic column shape of the reflector 3. The focal point P of the reflecting surface (inner surface 3a) can be directed.

  9 and 10 are diagrams for explaining variations of the visible light source main body portion 2b. In the illumination device according to the first embodiment, as shown in FIGS. 5, 6, and 9 (A), the visible light source 2 is formed by applying the phosphor 2 a to the surface of the substantially cylindrical visible light source body portion 2 b. In the illumination device of the second embodiment configured, the visible light source 2 is configured by kneading the phosphor 2a inside the substantially cylindrical visible light source body portion 2b, but the illumination of the fifth embodiment In the apparatus, as shown in FIG. 9B, the phosphor 2a is applied to the surface of the substantially triangular prism-shaped visible light source body portion 2b, or the phosphor 2a is placed inside the substantially triangular prism-shaped visible light source body portion 2b. It is also possible to construct the visible light source 2 by kneading.

  In the illumination device of the sixth embodiment, as shown in FIG. 9C, the phosphor 2a is applied to the surface of the visible light source body portion 2b having a substantially rectangular parallelepiped shape, or the visible light source having a substantially rectangular parallelepiped shape. It is also possible to configure the visible light source 2 by kneading the phosphor 2a into the main body portion 2b.

  Further, although not shown, in the illumination device of the seventh embodiment, the phosphor 2a is applied to the surface of an arbitrary polygonal columnar visible light source body part 2b, or the arbitrary polygonal columnar visible light source body part 2b is applied. It is also possible to configure the visible light source 2 by kneading the phosphor 2a inside.

  In the illumination device of the eighth embodiment, as shown in FIG. 10A, the phosphor 2a is applied to both surfaces of the substantially cylindrical visible light source body portion 2b and the substantially rectangular parallelepiped support portion 4. Alternatively, the visible light source 2 can be configured by kneading the phosphor 2a therein.

  Furthermore, in the illumination device of the ninth embodiment, as shown in FIG. 10B, the phosphor 2a is applied to both surfaces of the substantially triangular prism-shaped visible light source main body portion 2b and the substantially rectangular parallelepiped support portion 4. Alternatively, the visible light source 2 can be configured by kneading the phosphor 2a therein.

  In the illumination device of the tenth embodiment, as shown in FIG. 10C, the phosphor 2a is applied to both surfaces of the visible light source main body portion 2b having a substantially rectangular parallelepiped shape and the support portion 4 having a substantially rectangular parallelepiped shape. Alternatively, the visible light source 2 can be configured by kneading the phosphor 2a therein.

  Furthermore, although not illustrated, in the illumination device of the eleventh embodiment, the phosphor 2a is applied to the surfaces of both the arbitrary polygonal columnar visible light source main body portion 2b and the substantially rectangular parallelepiped support portion 4, or those The visible light source 2 can also be configured by kneading the phosphor 2a inside.

  Hereinafter, a twelfth embodiment of the illumination device of the present invention will be described. The illumination device of the twelfth embodiment is configured in substantially the same manner as the illumination device of the first embodiment described above, except for the points described below. Therefore, according to the illuminating device of 12th Embodiment, except the point mentioned later, there can exist an effect substantially the same as the illuminating device of 1st Embodiment mentioned above.

  FIG. 11 is a perspective view schematically showing the illuminating device of the twelfth embodiment. In the illuminating device of the first embodiment, as shown in FIG. 5, the reflecting surface (inner surface 3a) of the reflector 3 is formed in a substantially parabolic column shape, and the visible light source main body portion 2b is formed in a substantially cylindrical shape and supported. Although the part 4 is formed in a substantially rectangular parallelepiped shape, in the illuminating device of the twelfth embodiment, as shown in FIG. 11, a rotating paraboloid obtained by rotating a parabola around a predetermined axis L0. Thus, the reflecting surface (inner surface 3a) of the reflector 3 is formed, the visible light source body portion 2b is formed in a substantially spherical shape, and the support portion 4 is formed in a substantially cylindrical shape.

  In the illuminating device of the twelfth embodiment, as shown in FIG. 11, the ultraviolet light A (FIG. 2) is emitted from the ultraviolet LED substrate assembly 1 toward the phosphor 2a (see FIG. 7) applied to the visible light source main body 2b. When the light is irradiated, the phosphor 2a is excited by the ultraviolet light A. As a result, the phosphor 2a emits visible light B (see FIG. 3), and the visible light B from the phosphor 2a is light-distributed by the rotating parabolic reflecting surface (inner surface 3a) of the reflector 3, FIG. Irradiate upward.

  Therefore, according to the illuminating device of 12th Embodiment, the thing (not shown) arrange | positioned on the upper side of FIG. 11 by the visible light B which the fluorescent substance 2a emitted rather than the case where the reflector 3 is not provided. It is possible to improve the function of making the light visible. Specifically, according to the illuminating device of the twelfth embodiment, not only the visible light source body portion 2b but also the entire surface of the rotating parabolic reflecting surface (inner surface 3a) of the reflector 3 is softly shined from the upper side of FIG. You can make it visible.

  Hereinafter, a thirteenth embodiment of the illumination device of the present invention will be described. The lighting device of the thirteenth embodiment is configured in substantially the same manner as the lighting device of the first embodiment described above, except for the points described below. Therefore, according to the illuminating device of the thirteenth embodiment, substantially the same effects as those of the illuminating device of the first embodiment described above can be obtained except for the points described below.

  12-14 is sectional drawing of the illuminating device of 13th Embodiment. Specifically, FIG. 12 shows a state where the ultraviolet light A is not irradiated, FIG. 13 shows a state where the ultraviolet light A is irradiated, and FIG. 14 shows a state where the visible light B is irradiated. Is shown.

  In the illuminating device of the first embodiment, as shown in FIG. 4, the visible light source main body portion 2 b, the reflector 3, and the support portion 4 are configured by one member, but in the illuminating device of the thirteenth embodiment, Instead, the visible light source main body portion 2b and the support portion 4 are constituted by one member, and the reflector 3 and the lens portion 5 are constituted by one member.

  FIG. 15 is a cross-sectional view showing the reflector 3 and the lens unit 5 formed of one member. FIG. 16 is a perspective view of the illumination device of the thirteenth embodiment. FIG. 17 is a view for explaining the visible light source 2 of the illumination device of the thirteenth embodiment. In the illuminating device of the thirteenth embodiment, as shown in FIG. 17, the visible light source body portion 2 b and the support portion 4 are formed of a transparent material such as glass, and ultraviolet light that has entered from the lower end of the support portion 4. A (see FIG. 13 and FIG. 16) is configured to be guided to the phosphor 2a. That is, in the illuminating device of the thirteenth embodiment, the support portion 4 has a function of supporting the visible light source main body portion 2b and a function of guiding the ultraviolet light A to the phosphor 2a.

  In the illumination device of the thirteenth embodiment, the visible light source 2 is configured by applying the phosphor 2a to the surface of the visible light source body portion 2b. However, in the illumination device of the fourteenth embodiment, a transparent visible light source is used. It is also possible to configure the visible light source 2 by kneading the phosphor 2a into the main body portion 2b.

  In the illuminating device of the thirteenth embodiment, as shown in FIG. 13, when the ultraviolet light A is irradiated from the ultraviolet LED substrate assembly 1 toward the phosphor 2a applied to the visible light source body portion 2b, ultraviolet light is emitted. The phosphor 2a is excited by A. Thereby, as shown in FIG. 14, the phosphor 2 a emits visible light B, and the visible light B from the phosphor 2 a is reflected by the parabolic columnar reflecting surface (inner surface 3 a (see FIGS. 15 and 16) of the reflector 3. )), And the light is controlled toward the upper side of FIG.

  Therefore, according to the illuminating device of the thirteenth embodiment, an object (not shown) arranged on the upper side of FIG. 14 by the visible light B emitted from the phosphor 2a, compared to the case where the reflector 3 is not provided. It is possible to improve the function of making the light visible. Specifically, according to the illuminating device of the thirteenth embodiment, not only the visible light source main body portion 2b but also the entire surface of the parabolic columnar reflecting surface (inner surface 3a) of the reflector 3 shines softly from the upper side of FIG. You can make it visible.

  Specifically, in the illumination device of the thirteenth embodiment, as described above, the support unit 4 has a function of supporting the visible light source body portion 2b and a function of guiding the ultraviolet light A to the phosphor 2a. Yes. Therefore, according to the illuminating device of the thirteenth embodiment, the visible light emitted from the visible light source 2 as the member supporting the visible light source body portion 2b and the member guiding the ultraviolet light A are provided separately. The possibility that B is blocked by the member that supports the visible light source main body portion 2b can be reduced. That is, according to the illumination device of the thirteenth embodiment, the irradiation amount of the visible light B is increased compared to the case where the member that supports the visible light source main body portion 2b and the member that guides the ultraviolet light A are provided separately, Can shine brightly.

  18 and 19 are views for explaining variations of the visible light source main body portion 2b. In the illumination device of the thirteenth embodiment, as shown in FIGS. 17 and 18A, the visible light source 2 is configured by applying the phosphor 2a to the surface of the substantially cylindrical visible light source body portion 2b, In the illumination device of the fourteenth embodiment, the visible light source 2 is configured by kneading the phosphor 2a inside the substantially cylindrical visible light source main body portion 2b, but in the illumination device of the fifteenth embodiment, As shown in FIG. 18B, the phosphor 2a is applied to the surface of the substantially triangular prism-shaped visible light source body portion 2b, or the phosphor 2a is kneaded into the interior of the approximately triangular prism-shaped visible light source body portion 2b. Thus, the visible light source 2 can be configured.

  In the illuminating device of the sixteenth embodiment, as shown in FIG. 18C, the phosphor 2a is applied to the surface of the visible light source body portion 2b having a substantially rectangular parallelepiped shape or the visible light source having a substantially rectangular parallelepiped shape. It is also possible to configure the visible light source 2 by kneading the phosphor 2a into the main body portion 2b.

  Further, although not shown, in the illumination device of the seventeenth embodiment, the phosphor 2a is applied to the surface of an arbitrary polygonal columnar visible light source body 2b, or the arbitrary polygonal columnar visible light source body 2b is applied. It is also possible to configure the visible light source 2 by kneading the phosphor 2a inside.

  In the illuminating device of the eighteenth embodiment, as shown in FIG. 19A, the phosphor 2a is applied to both surfaces of the substantially cylindrical visible light source main body portion 2b and the substantially rectangular parallelepiped support portion 4. Alternatively, the visible light source 2 can be configured by kneading the phosphor 2a therein.

  Furthermore, in the illumination device of the nineteenth embodiment, as shown in FIG. 19B, the phosphor 2a is applied to the surfaces of both the substantially triangular prism-shaped visible light source body 2b and the substantially rectangular parallelepiped support portion 4. Alternatively, the visible light source 2 can be configured by kneading the phosphor 2a therein.

  In the illuminating device of the twentieth embodiment, as shown in FIG. 19C, the phosphor 2a is applied to both surfaces of the visible light source main body portion 2b having a substantially rectangular parallelepiped shape and the support portion 4 having a substantially rectangular parallelepiped shape. Alternatively, the visible light source 2 can be configured by kneading the phosphor 2a therein.

  Furthermore, although not shown, in the illumination device of the twenty-first embodiment, the phosphor 2a is applied to the surfaces of both the arbitrary polygonal columnar visible light source main body 2b and the substantially rectangular parallelepiped support 4, or these The visible light source 2 can also be configured by kneading the phosphor 2a inside.

  The twenty-second embodiment of the illumination device of the present invention will be described below. The illumination device of the twenty-second embodiment is configured substantially in the same manner as the illumination device of the thirteenth embodiment described above, except for the points described below. Therefore, according to the illuminating device of 22nd Embodiment, except the point mentioned later, there can exist an effect substantially the same as the illuminating device of 13th Embodiment mentioned above.

  FIG. 20 is a perspective view schematically showing a lighting device according to a twenty-second embodiment. In the illuminating device of the thirteenth embodiment, as shown in FIG. 16, the reflecting surface (inner surface 3a) of the reflector 3 is formed in a substantially parabolic column shape, and the visible light source body portion 2b is formed in a substantially cylindrical shape and supported. Although the part 4 is formed in a substantially rectangular parallelepiped shape, in the lighting device of the twenty-second embodiment, as shown in FIG. 20, a rotating paraboloid obtained by rotating a parabola around a predetermined axis L0. Thus, the reflecting surface (inner surface 3a) of the reflector 3 is formed, the visible light source body portion 2b is formed in a substantially spherical shape, and the support portion 4 is formed in a substantially cylindrical shape.

  In the illuminating device of the twenty-second embodiment, as shown in FIG. 20, the ultraviolet light A (FIG. 13) is emitted from the ultraviolet LED substrate assembly 1 toward the phosphor 2a (see FIG. 17) applied to the visible light source body 2b. When the light is irradiated, the phosphor 2a is excited by the ultraviolet light A. As a result, the phosphor 2a emits visible light B (see FIG. 14), and the visible light B from the phosphor 2a is light-distributed and controlled by the rotating parabolic reflecting surface (inner surface 3a) of the reflector 3. Irradiate upward.

  Therefore, according to the illumination device of the twenty-second embodiment, an object (not shown) arranged on the upper side of FIG. 20 by visible light B emitted from the phosphor 2a, compared to the case where the reflector 3 is not provided. It is possible to improve the function of making the light visible. Specifically, according to the illumination device of the twenty-second embodiment, not only the visible light source body portion 2b but also the entire surface of the rotating parabolic reflection surface (inner surface 3a) of the reflector 3 is softly shined from the upper side of FIG. You can make it visible.

  In the illumination device of the twenty-second embodiment, as shown in FIG. 20, the visible light source body portion 2b is formed in a substantially spherical shape. However, in the illumination device of the twenty-third embodiment, the visible light source body portion 2b is arbitrarily formed. A polyhedron can also be used.

  The twenty-fourth embodiment of the illumination device of the present invention will be described below. 21 to 23 are cross-sectional views of the illumination device of the twenty-fourth embodiment. Specifically, FIG. 21 shows a state where the ultraviolet light A is not irradiated, FIG. 22 shows a state where the ultraviolet light A is irradiated, and FIG. 23 shows a state where the visible light B is irradiated. Is shown.

  In the illuminating device of the twenty-fourth embodiment, unlike the illuminating devices of the first to twenty-third embodiments, the phosphor 2a is applied to the reflecting surface (inner surface 3a) of the reflector 3. Therefore, according to the illumination device of the twenty-fourth embodiment, the support 4 (see FIG. 7) for supporting the visible light source 2 configured by applying the phosphor 2a is provided separately from the reflector 3. The need can be eliminated. That is, the manufacturing cost can be reduced as compared with the case where the support portion 4 is provided separately from the reflector 3.

  Also in the illumination device of the twenty-fourth embodiment, the visible light B from the phosphor 2a is subjected to light distribution control by the reflector 3, as shown in FIG. Specifically, the visible light B from the phosphor 2 a is reflected by the concave reflecting surface (inner surface 3 a) of the reflector 3 and the light distribution is controlled. Therefore, according to the illumination device of the twenty-fourth embodiment, the visible light B emitted from the phosphor 2a is arranged on the upper side of FIG. 23 by the visible light B emitted from the phosphor 2a, compared to the case where the light distribution is not controlled. The function of making the objects (not shown) visible can be improved.

  In the illumination devices of the first to twenty-fourth embodiments, the phosphor 2a emits, for example, white visible light. In the illumination device of the twenty-fifth embodiment, a phosphor that emits visible light other than white is used. Is also possible.

  In the twenty-sixth embodiment, the first to twenty-fifth embodiments described above can be combined as appropriate.

  The lighting device of the present invention can be applied to, for example, a general lighting product, an ultraviolet excitation lamp.

It is sectional drawing of the illuminating device of 1st Embodiment. It is sectional drawing of the illuminating device of 1st Embodiment. It is sectional drawing of the illuminating device of 1st Embodiment. It is sectional drawing which showed the visible light source main-body part 2b comprised by the one member, the reflector 3, and the support part 4. FIG. It is the perspective view which looked at the visible light source main-body part 2b, the reflector 3, and the support part 4 from the upper right side of FIG. It is the perspective view which looked at the visible light source main-body part 2b, the reflector 3, and the support part 4 from the upper left side of FIG. It is a figure for demonstrating the visible light source 2 of the illuminating device of 1st Embodiment. It is an expanded sectional view for demonstrating the support area | region 3d shown in FIGS. It is a figure for demonstrating the variation of the visible light source main-body part 2b. It is a figure for demonstrating the variation of the visible light source main-body part 2b. It is the perspective view which showed schematically the illuminating device of 12th Embodiment. It is sectional drawing of the illuminating device of 13th Embodiment. It is sectional drawing of the illuminating device of 13th Embodiment. It is sectional drawing of the illuminating device of 13th Embodiment. It is sectional drawing which showed the reflector 3 and the lens part 5 which were comprised by one member. It is a perspective view of the illuminating device of 13th Embodiment. It is a figure for demonstrating the visible light source 2 of the illuminating device of 13th Embodiment. It is a figure for demonstrating the variation of the visible light source main-body part 2b. It is a figure for demonstrating the variation of the visible light source main-body part 2b. It is the perspective view which showed roughly the illuminating device of 22nd Embodiment. It is sectional drawing of the illuminating device of 24th Embodiment. It is sectional drawing of the illuminating device of 24th Embodiment. It is sectional drawing of the illuminating device of 24th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 UV LED board assembly 2 Visible light source 3 Reflector 4 Support part 5 Lens part P Focus

Claims (8)

  An ultraviolet light source that emits ultraviolet light; a phosphor that is excited by ultraviolet light from the ultraviolet light source and emits visible light; and a visible light source that is formed by applying or kneading the phosphor. An illuminating device comprising: a visible light control means for controlling light distribution of visible light from the visible light source.   The visible light control means is configured by a reflector having a concave reflecting surface for reflecting visible light from the visible light source, and the visible light source is disposed on or near the focal point of the reflecting surface of the reflector. The lighting device according to claim 1, wherein   The visible light source main body portion to which the phosphor is applied or kneaded, the reflector, and an ultraviolet light source support means for supporting the ultraviolet light source are formed as a single member. 2. The illumination device according to 2.   The illumination device according to claim 3, wherein an ultraviolet light passage hole is formed in the reflector.   The illumination device according to claim 4, wherein the ultraviolet light source is supported by an outer surface of the reflector.   6. The illumination device according to claim 5, wherein an outer surface of the reflector is formed such that a normal line of an outer surface of the reflector in a portion supporting the ultraviolet light source is directed to the visible light source main body portion.   A visible light source body portion to which the phosphor is applied or kneaded; a light guide portion for guiding ultraviolet light emitted from the ultraviolet light source to the visible light source body portion; and the visible light source body portion. The illumination device according to claim 2, wherein the visible light source body part supporting means for supporting is formed by one member.   In an illuminating device comprising: an ultraviolet light source that emits ultraviolet light; a phosphor that is excited by ultraviolet light from the ultraviolet light source to emit visible light; and a visible light source that is configured by applying the phosphor. An illuminating device comprising a reflector having a concave reflecting surface as visible light control means for controlling light distribution of visible light from the phosphor, and applying the phosphor to the reflecting surface of the reflector.

Images