JP6531937B2 - Light guide lighting device - Google Patents

Description

  The present invention relates to a light guide illumination device for guiding light emitted from an illumination device fixed to a ceiling or the like.

  BACKGROUND Conventionally, a lighting device such as a downlight fixed to a mounting portion such as a ceiling portion has been used. In such a lighting device, light is emitted centering on the lower direction of the portion where the lighting device is provided, and the further it is from the center, the smaller the amount of light which can be delivered, which may cause a blind spot of light. There is.

JP 2007-5216 A

  However, when a lighting device having a light source is added, installation work is required, which takes time and cost.

  The present invention has been made in view of the above-described conventional problems, and the object of the present invention is to create a blind spot of light using an existing lighting device without adding a lighting device having a light source. It is an object of the present invention to provide a light guide illumination device capable of suppressing

  In order to solve the said subject, this invention is set as the following structures.

A transmission condensing unit provided in a path of light irradiated from the illumination device and transmitting a part of the light and collecting all or a part of the remaining light; and the transmission condenser collecting the light collected by the transmission condensing part The light guide unit includes a light guide unit leading to a place away from the unit, and an irradiation unit that irradiates the light guided to the light guide unit . A reflection unit having a reflection surface on the side closer to the illumination device of the transmission / condenser unit where light emitted from the illumination device is reflected toward the light guide unit is a distance to the light guide unit. A plurality of members are arranged in parallel at intervals in the contact direction, and the reflecting portion is formed such that the projecting height from the surface of the transmission condensing portion is higher as the distance from the light guiding portion increases. .

  According to the present invention, the light emitted from the existing lighting device can be guided to a distant place and irradiated without adding a lighting device having a light source, and generation of a blind spot of light can be suppressed.

FIG. 1 is a perspective view of the light guide illumination device of the first embodiment. FIG. 2: is the perspective view which looked at the ceiling part of the state in which the light guide illuminating device of 1st embodiment was provided in the ceiling part in which the illuminating device was provided. FIG. 3A is a longitudinal cross-sectional view of essential parts of the transmission condensing part, the illumination device, and the ceiling part of the light guiding illumination device of the first embodiment, and FIG. 3B is a transmission condensing part of the light guiding illumination device of the first embodiment It is a bottom view. FIG. 4 is a perspective view of the light guide illumination device of the second embodiment. FIG. 5 is a bottom view of the transmission light collector and the light guide of the light guide illumination device according to the third embodiment. FIG. 6 is a bottom view of the transmission light collector and the light guide of the light guide illumination device according to the fourth embodiment. FIG. 7 is a bottom view of the transmission light condensing part and the light guide part of the light guide illumination device of the fifth embodiment. FIG. 8 is a side cross-sectional view of the transmission light collector and the light guide of the light guide illumination device of the fifth embodiment, and the light source of the illumination device. FIG. 9 is a bottom view of the transmission light collector and the light guide of the light guide illumination device according to the sixth embodiment. FIG. 10 is a bottom view of the transmission light collector and the light guide of the light guide illumination device according to the seventh embodiment. FIG. 11 is a perspective view for explaining light irradiation of a conventional lighting device.

  Hereinafter, a first embodiment of the light guide illumination device of the present invention will be described based on FIGS. 1 to 3.

  The light guide illumination device 1 of the present invention is, as shown in FIG. 1, to illuminate light emitted from the illumination device 5 from a distant place.

  Although various existing known lighting devices 5 are targets as the lighting device 5, as shown in FIG. 2, the lighting device 5 fixed to the attachment portion such as the ceiling 6 is a suitable target. The mounting portion is mainly the ceiling portion 6 or wall portion of the building, but may be a floor or another portion and is not particularly limited. The lighting device 5 is a so-called downlight embedded in the ceiling 6 as shown in FIG. 3A in the first embodiment, but is not limited to the downlight. Moreover, the illuminating device 5 does not need to be embedded in the ceiling part 6, a wall part, etc., and may be provided in the lower surface (namely, ceiling surface 61) of the ceiling part 6, and the indoor side of a wall surface.

  The illuminating device 5 which consists of a downlight of 1st embodiment is equipped with the casing 50 embedded at the ceiling part 6, as shown to FIG. 3A. The casing 50 has a light source 51, a power supply unit (not shown) for creating operating power of the light source 51 based on power supplied from a power source such as a commercial power source, and light emitted from the light source 51 in a predetermined range. The reflective part 52 to make it orientate is provided.

  The light source 51 is an LED (Light Emitting Diode) in the first embodiment, but may be an incandescent lamp, a fluorescent lamp, a halogen lamp, or the like, and is not particularly limited. The light source 51 composed of an LED includes an LED element and a substrate on which the LED element is mounted, and other accompanying components. Even when the light source 51 is other than an LED, an accompanying component (for example, a ballast in the case of a fluorescent lamp, etc.) may be appropriately provided.

  The reflecting portion 52 has a concave surface 520 facing downward, and the light emitted from the light source 51 disposed at a predetermined position is reflected by the concave surface 520, and the traveling direction is changed to the downward predetermined range. . Furthermore, in the first embodiment, the cover 53 is provided at the opening at the lower end of the reflecting portion 52.

  The cover 53 has translucency and is formed of glass, resin or the like, but the material is not particularly limited. In addition, the cover 53 may have a color, or may be so-called translucent such as milky white. The cover 53 may not be provided.

  In the first embodiment, as shown in FIG. 3A, the casing 50 is provided with a flange 54 outwardly from the opening edge of the lower end. The flange 54 has a circular shape in a bottom view, but the shape is not particularly limited. The casing 50 is inserted into the opening 62 formed in the ceiling portion 6 from below, and the flange 54 abuts on a portion around the opening 62 of the ceiling surface 61. The casing 50 is fixed to the ceiling 6 by fastening fasteners such as screws to the ceiling 6 via the flange 54. Further, although not shown, the casing 50 has a screw member screwed to the outside of the casing 50 on the upper side of the ceiling portion 6 and holds the ceiling portion 6 from above and below by the screw member and the flange 54. It may be fixed to Moreover, the casing 50 may be fixed to the ceiling part 6 by the flange 54 being adhere | attached on the ceiling surface 61 with an adhesive tape or an adhesive agent, and the fixing method to the ceiling part 6 of the casing 50 is not specifically limited.

  As shown in FIG. 11, the illumination device 5 emits light around the lower side, and the further it is away from the center, the smaller the amount of light that can be delivered, which may cause a blind spot 7 (darkness) of the light. . Therefore, the light guide illumination device 1 of the present invention is provided.

  The light guide illumination device 1 includes, as shown in FIG. 1, a transmission light condensing unit 2, a light guide unit 3, and an irradiation unit 4.

  The transmission condensing unit 2 is provided in a path of light emitted from the illumination device 5, transmits part of the light, and collects all or part of the remaining light. In the first embodiment, the transmissive condensing unit 2 is formed of translucent glass, resin or the like, and is provided below the cover 53 to cover the cover 53 as shown in FIG. 3A. There is. In addition, the material of the transmission condensing part 2 is not limited. The transmissive condensing unit 2 has a circular shape substantially the same as the flange 54 of the lighting device 5 in a bottom view, and the size is also substantially the same, but is slightly larger than the flange 54. And as shown to FIG. 1, FIG. 3B, the transmission condensing part 2 has the spreading | diffusion part 21. As shown in FIG.

  The diffusion section 21 has unevenness on the surface or has fine unevenness by so-called embossing or the like to diffuse light, and the form is not limited. The light is diffused by the diffusion unit 21 and part of the diffused light is emitted downward, and the other part is emitted laterally. Such a diffusion part 21 may be provided in the whole of the transmission condensing part 2 or may be provided in a part, and in the first embodiment, as described later, It is provided. As shown to FIG. 3B, when the spreading | diffusion part 21 is provided in a part of permeation | transmission condensing part 2, the remaining part turns into the permeation | transmission part 20 irradiated almost below without being diffused.

  In the first embodiment, as shown in FIG. 3A, the transmission condensing portion 2 is provided with the cylindrical portion 22 from the outer end to the upper side, and the inner flange 23 from the upper end of the cylindrical portion 22 to the inner side. Is provided. Then, when the casing 50 is fixed to the ceiling portion 6, the flange 54 of the casing 50 abuts on a portion around the opening 62 of the ceiling surface 61 via the inner flange 23, so that the inner flange 23 It is held by a portion around the opening 62 of the ceiling surface 61. Thereby, the transmission condensing part 2 is fixed to the ceiling part 6.

  In addition, the transmission condensing part 2 may be fixed to the ceiling part 6 by fixing fasteners, such as a screw, into the ceiling part 6 through the transmission condensing part 2 (or the inner flange 23 etc.). Moreover, the transmission condensing part 2 may be fixed to the ceiling part 6 with an adhesive tape or an adhesive agent, and the fixing method to the ceiling part 6 of the transmission condensing part 2 is not specifically limited.

  Moreover, although the transmission condensing part 2 is provided in the lower side of the casing 50 as shown to FIG. 3A in 1st embodiment, if it is a path | route of the light emitted from the light source 51, the part in the casing 50 May be provided.

  As shown in FIG. 1, a part of the light emitted from the light source 51 of the lighting device 5 is deflected toward the light guiding part 3 by the transmission condensing part 2, and from the light output part 24 of the transmission condensing part 2 Light out. In the first embodiment, the cylindrical portion 22 is mainly formed of a light shielding member, and only the portion to be the light emitting portion 24 is formed of glass, resin, or the like having the same light transmitting property as the transmissive condensing portion 2. The whole of the tubular portion 22 may be formed of a light transmitting member. In this case, an arbitrary position of the cylindrical portion 22 can be the light emitting portion 24. Further, as shown in FIG. 1, in the transmission condensing unit 2, the diffusion unit 21 is provided in the vicinity of the light output unit 24.

  The light guiding unit 3 guides the light collected by the transmission light collecting unit 2 to a place away from the transmission light collecting unit 2. As shown in FIG. 1, the light guide portion 3 is formed of translucent glass, resin or the like, and has a light incident surface 31, a light exit surface 32, and a reflective surface 33 on a part of the surface. The material of the light guide 3 is not particularly limited.

  In the first embodiment, as shown in FIG. 1, the light guide 3 is in the shape of a rod having a longitudinal direction, and one end face in the longitudinal direction is the light incident surface 31 and the other end is the light exit surface 32. The side surface along the longitudinal direction of the light guide portion 3 becomes a reflection surface 33 for advancing from the light entrance surface 31 toward the light exit surface 32 while light is reflected. Moreover, although the shape in the cross section orthogonal to the longitudinal direction of the light guide part 3 is carrying out the rectangular shape, it is not specifically limited. The shape of the light guide 3 is preferably a shape in which the amount of transmission to the outside is small and the amount of reflection is large in the reflection surface 33 when light travels from the light entrance surface 31 to the light exit surface 32.

  The light guiding portion 3 is provided such that the light incident surface 31 abuts on or approaches the light emitting portion 24 of the transmission condensing portion 2. The light guide 3 may be fixed to the ceiling 6 by an adhesive tape or an adhesive. Further, even if the light guide 3 is fixed to the ceiling 6 by driving the fixing tool such as a screw or the like into the ceiling 6 via the light guide 3 or the flange-like portion continuously provided from the light guide 3. The method of fixing the light guide 3 to the ceiling 6 is not particularly limited. The irradiation unit 4 is provided so as to abut or be close to the light exit surface 32 of the light guide unit 3.

  The irradiating unit 4 irradiates the light guided to the light guiding unit 3. Although the irradiation part 4 is mainly provided in the ceiling part 6 of the part which is far from the part in which the casing 50 of the illuminating device 5 was provided, and the quantity of light which reaches from the light source 51 tends to become dark, a place in particular is not limited. In the first embodiment, the irradiation unit 4 is formed of translucent glass, resin or the like, and as shown in FIG. 1, the incident surface 41 is in contact with the light exit surface 32 of the light guide 3. Or it is provided to be close. In addition, the material of the irradiation part 4 is not limited. The irradiation unit 4 is a plate having a circular shape substantially the same as the transmission condensing unit 2 in a bottom view, and the size is smaller than that of the transmission condensing unit 2, but the shape or the size is not particularly limited. In the irradiation unit 4, a part of the side surface of the disc serves as the incident surface 41, and the lower plate surface serves as the exit surface 42.

  The irradiation unit 4 has a diffusion unit in the first embodiment. The diffusion portion has unevenness on the exit surface 42 or fine unevenness by so-called embossing or the like to diffuse light, and the form is not limited. The light is diffused by the diffusion unit, and the diffused light is emitted downward. Although such a diffusion part is provided in the whole outgoing radiation side 42, it may be provided in a part.

  The irradiation unit 4 may be fixed to the ceiling 6 by an adhesive tape or an adhesive. Moreover, the irradiation part 4 may be fixed to the ceiling part 6 because fasteners, such as a screw, are driven into the ceiling part 6 via the irradiation part 4, and the fixing method to the ceiling part 6 of the irradiation part 4 is especially It is not limited.

  By using the light guiding illumination device 1 as described above, a part of the light emitted from the existing lighting device 5 is collected by the transmission light collecting unit 2, and the light is separated from the lighting device 5 by the light guiding unit 3 It can be led to the part 4 and can be irradiated from the irradiation part 4. As a result, generation of the blind spot 7 of light is suppressed. And since it is not necessary to add the illuminating device 5 which has a light source on this, it can suppress that the effort and cost of the installation work for adding the illuminating device 5 which has a light source are added.

  In addition, even when the existing lighting device 5 is transferred or expanded, the lighting device 5 is installed in a new part of the ceiling portion 6, resulting in an increase in time and cost for installation work. Furthermore, in the case where the lighting device 5 is a downlight, traces are left on the ceiling 6 when the lighting device 5 is transferred. Such a thing is also suppressed by using the said light guide illuminating device 1. FIG.

  Next, the light guide illumination device 1 according to the second embodiment will be described based on FIG. In addition, description is abbreviate | omitted about the same structure as the said embodiment, and a different part is mainly demonstrated.

  In the first embodiment, only one transmission condensing unit 2, one light guiding unit 3 and one irradiating unit 4 are provided, whereas in the second embodiment, two light guiding units 3 and two irradiating units 4 are provided. It is provided individually. Only one transmission condensing unit 2 is provided.

  A light exit portion 24 is provided at a position opposite to the center of the transmissive focusing portion 2 with respect to the center in a bottom view, and the light entrance surface 31 of the light guide 3 is in proximity to or abuts on the light exit portion 24. It is provided. The whole of the cylindrical portion 22 may be formed of a light transmitting member, and any position of the cylindrical portion 22 may be the light emitting portion 24. The light guiding unit 3 and the irradiating unit 4 are the same as the light guiding unit 3 and the irradiating unit 4 of the first embodiment, respectively.

  Further, in the second embodiment, the diffusion portion 21 is formed on the whole of the transmission light collecting portion 2. Part of the light that has hit the diffusion section 21 is emitted downward, and the remaining part is collected to the light guiding section 3.

  As described above, the provision of the two light guides 3 and the two irradiation units 4 further suppresses the occurrence of the blind spot 7 of light. In the second embodiment, although two light guiding units 3 and two irradiating units 4 are provided for one transmission condensing unit 2, three light guiding units 3 and three irradiating units 4 are provided. A plurality of five or more pieces may be provided.

  Next, the light guide illumination device 1 of the third embodiment will be described based on FIG. In addition, description is abbreviate | omitted about the same structure as the said embodiment, and a different part is mainly demonstrated.

  The third embodiment is different from the first embodiment and the second embodiment in the shape of the transmission light collecting part 2, and the other parts are the same as the first embodiment and the second embodiment.

  The transmission condensing part 2 has two side lines connecting the top of the arc-shaped part 2a and the apex of the arc-shaped part 2a opposite to the arc-shaped part 2a across the center of the arc-shaped part 2a. And a portion 2b. The both-sides line portion 2 b has an end portion in front of the vertex side, and a line connecting the both ends (in fact, a surface) is the light output portion 24. And the light entrance surface 31 of the light guide part 3 is provided so that this light exit part 24 may approach or contact | abut.

  Further, the arc-shaped portion 2 a of the transmission condensing portion 2 has a diffusion portion 25. The diffusion unit 25 is similar to the diffusion unit 21 of the first embodiment, and diffuses light.

  In the third embodiment, most of the light that has diffused to the diffusion unit 25 is diffused, a part of the diffused light is collected to the light guiding unit 3, and the light that has not hit the diffusion unit 25 is transmitted and collected. The light is transmitted through the light portion 2 and irradiated downward.

  In the third embodiment, the light passing through the diffusion unit 25 can be easily collected to the light guide unit 3 by the transmission condenser unit 2 having the above-described shape. That is, the incident angle at the time of the light diffused and hit | diffused by the spreading | diffusion part 25 provided in the arc-shaped part 2a in the side line part 2b becomes large. As a result, the amount of light transmitted to the outside is suppressed at the side line portion 2 b, and a large amount of light can be easily collected to the light guiding portion 3.

  Next, a light guide illumination device 1 according to a fourth embodiment will be described based on FIG. In addition, description is abbreviate | omitted about the same structure as the said embodiment, and a different part is mainly demonstrated.

  In the fourth embodiment, the diffusion part 26 of the transmission light collecting part 2 is different from the third embodiment. The shape of the transmission light collector 2 is the same as that of the third embodiment.

  The diffusion unit 26 is formed in a portion corresponding to the path of the light from the light source 51 of the illumination device 5 in the transmission condensing unit 2. Part of the light that has hit the diffusion section 26 is directed downward, and the remaining part is collected to the light guiding section 3.

  Also in the fourth embodiment, the light passing through the diffusion unit 26 is collected to the light guide unit 3 by the transmission light collecting unit 2 having the same shape as the transmission light collecting unit 2 of the third embodiment. It will be easier. That is, the incident angle when light diffused to the diffusion portion 26 is reflected by the side line portion 2b is increased, the amount of light transmitted through the side line portion 2b is suppressed, and a large amount of light is easily collected to the light guide portion 3 Become.

  Next, the light guide illumination device 1 of the fifth embodiment will be described based on FIGS. 7 and 8. In addition, description is abbreviate | omitted about the same structure as the said embodiment, and a different part is mainly demonstrated.

  In the fifth embodiment, the transmitting and collecting unit 2 is provided with a reflecting unit 27 instead of the diffusing unit 25. The reflecting portion 27 is provided on the upper surface of the transmission condensing portion 2 (that is, the surface on the side closer to the light source 51 of the lighting device 5), and has a vertically pointed triangular shape. The reflecting surface 28 formed by the inclined surface of the reflecting portion 27 faces the light guiding portion 3 side. A plurality of reflecting portions 27 are arranged in parallel at a distance from each other in the direction toward and away from the light guiding portion 3 in the transmission condensing portion 2. In the fifth embodiment, the in-and-out direction of the transmission condensing portion 2 and the light guide portion 3 is orthogonal to the in-and-out direction of the transmission condensing portion 2 and the illumination device 5. In the ones shown in FIGS. 7 and 8, the reflecting portion 27a, the reflecting portion 27b, and the reflecting portion 27c are provided in order from the side far from the light guiding portion 3. The heights of the reflecting portions 27 (reflecting portions 27 a to 27 c) protruding upward from the upper surface of the transmissive condensing portion 2 are formed higher as the light guiding portion 3 is farther. That is, the height h1 of the reflective portion 27a> the height h2 of the reflective portion 27b> the height h3 of the reflective portion 27c.

  Thereby, when light emitted from the light source 51 of the illumination device 5 and reflected by the reflecting surface 28 of the reflecting portion 27 far from the light guiding portion 3 travels toward the light guiding portion 3 up to the light guiding portion 3 The light is hard to be intercepted by the reflection part 27 located in the middle of.

  Further, the inclination angle of the reflective surface 28 is preferably set so that a large amount of light can be collected in the light guide 3. In the fifth embodiment, as the distance from the light guide portion 3 increases, the inclination angle of the reflective surface 28 with respect to the horizontal surface increases.

  Next, a light guide illumination device 1 according to a sixth embodiment will be described based on FIG. In addition, description is abbreviate | omitted about the same structure as the said embodiment, and a different part is mainly demonstrated.

  The sixth embodiment has an aperture 29 in the transmission light collecting section 2 in the fifth embodiment. The opening 29 is formed in a portion where the reflective portion 27 of the transmission light collecting portion 2 is not provided.

  Thereby, the heat from the lighting device 5 can be easily released.

  Next, a light guide illumination device 1 according to a seventh embodiment will be described based on FIG. In addition, description is abbreviate | omitted about the same structure as the said embodiment, and a different part is mainly demonstrated.

  The seventh embodiment differs from the first embodiment to the sixth embodiment in that the light guide portion 3 and the irradiation portion 4 are different.

  In the first to sixth embodiments, the light guiding unit 3 and the irradiating unit 4 are separate. On the other hand, in the seventh embodiment, the light guide portion 3 and the irradiation portion 4 are integrally formed.

  To explain further, the light guide portion 3 inclines the end surface to be the light exit surface 32 so as to face obliquely downward. The inclined light emitting surface 32 functions as the irradiation unit 4. That is, the light exit surface 32 functions as the light exit surface 42 of the irradiation unit 4.

  Thereby, since the irradiation part 4 is formed only by inclining the end surface of the light guide part 3, it is not necessary to provide the irradiation part 4 of another member, the effort and cost of manufacture are suppressed, and fixation to an attachment part It also saves time and effort.

  In the light guiding illumination device 1 of the present invention, the light guiding illumination device 1 is provided in the path of the light emitted from the illumination device 5, and includes the transmission condensing portion 2 transmitting a part of the light and collecting all or part of the remaining. . The light guide illumination device 1 guides the light collected by the transmission light collection unit 2 to a place away from the transmission light collection unit 2, and an irradiation unit 4 that irradiates the light led to the light guide unit 3. And.

  As a result, a part of the light emitted from the existing lighting device 5 is collected by the transmission light collecting portion 2 and guided to the light emitting portion 4 separated from the lighting device 5 by the light guiding portion 3 to be irradiated from the light emission portion 4 be able to. As a result, generation of the blind spot 7 of light is suppressed.

  In addition, on the surface on the side closer to the illumination device 5 of the transmission light collection portion 2, the reflection portion 27 having the reflection surface 28 on which the light emitted from the illumination device 5 is reflected toward the light guide portion 3 A plurality of members are juxtaposed at intervals in the direction of contact and disengagement with three. As the reflecting portion 27 is farther from the light guiding portion 3, the protruding height of the transmitting and condensing portion 2 from the surface is formed higher.

  Thereby, when the light emitted from the illumination device 5 and reflected by the reflecting portion 27 far from the light guiding portion 3 travels toward the light guiding portion 3, the reflecting portion positioned midway to the light guiding portion 3 27 makes it difficult to block the light.

  In addition, it is preferable that a plurality of light guiding units 3 and a plurality of irradiating units 4 are provided for one transmission light collecting unit 2.

  This further suppresses the occurrence of the blind spot 7 of light.

DESCRIPTION OF SYMBOLS 1 light guide illumination device 2 transmission condensing part 3 light guide part 4 irradiation part 5 illumination device

Claims (2)

A transmission light collector provided in a path of light emitted from the lighting device, transmitting part of the light and collecting all or part of the remaining light;
A light guiding unit for guiding the light collected by the transmission light collecting unit to a location separated from the transmission light collecting unit;
An irradiating unit that irradiates the light guided to the light guiding unit;
Equipped with
A reflection unit having a reflection surface on the side closer to the illumination device of the transmission / condenser unit where light emitted from the illumination device is reflected toward the light guide unit is a distance to the light guide unit. A plurality of members are arranged in parallel at intervals in the contact direction, and the reflecting portion is formed such that the projecting height from the surface of the transmission condensing portion is higher as the distance from the light guiding portion increases. Light guiding illumination device. The light guide illumination device according to claim 1 , wherein a plurality of the light guide unit and the irradiation unit are provided with respect to one transmission light collecting unit.

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