JP5964178B2 - LIGHTING MODULE AND LIGHTING DEVICE HAVING THE SAME - Google Patents

Description

  The present invention relates to an illumination module used as indoor illumination, and more particularly to an illumination module that includes a light source and a light guide plate, and that emits light from the light source through a light guide plate from a light emitting surface, and an illumination device using the same. .

  In recent years, various thin lighting devices using a light guide plate have been proposed. In an illuminating device using a light guide plate, light incident from the incident surface of the light guide plate is propagated by total reflection between the opposing surfaces of the light guide plate, and the propagated light is emitted to the outside of the light guide plate by a diffuse reflection layer or an uneven pattern. ing. This functions as a lighting device.

  As a technique of the illumination device using the light guide plate, for example, a technique disclosed in Patent Document 1 can be given. In the illumination device of Patent Document 1, in order to efficiently enter the light emitted from the light source into the incident surface of the light guide plate, the light is reflected so as to surround the space between the light emitting portion of the light source and the incident surface of the light guide plate. A reflection member such as a sheet is provided. Accordingly, it is possible to prevent the light emitted from the light source from leaking to a portion other than the incident surface of the light guide plate. As a result, the light emitted from the light source can be used effectively.

  Further, in Patent Document 2, a blind hole (dent) having a substantially square side wall surface forming an opening and an arcuate (cylindrical) corner at the bottom is formed on the incident side surface facing the light emitting light source. One or more light guide plates are disclosed.

Japanese Unexamined Patent Publication No. 2007-23412 (published on September 13, 2007) JP 2003-215346 A (published July 30, 2003)

  In order to prevent light from leaking to parts other than the incident surface of the light guide plate and to efficiently enter the incident surface, eliminate the gap between the light source and the light incident part of the light guide plate and the reflecting member, It is desirable that the space between the light source and the incident surface is entirely surrounded by a reflecting member.

  For example, when a member in which a plurality of LED elements are linearly arranged on a single substrate is used as a light source, as shown in FIG. 8, a sheet-like reflecting member is sandwiched from above and below the light guide plate. And by making this reflective member approach the board | substrate with which the some LED element was arranged, the space between the entrance plane of a light-guide plate and a light source can be enclosed with a reflective member without gap.

  In general, when a substrate on which a plurality of LED elements are arranged is used as a light source, the light source is fixed to a metal member with screws. Thereby, the heat generated when the light source emits light can be efficiently transferred to the outside or radiated.

  When the reflecting member is installed with respect to the light source fixed with screws, the reflecting member is slid to the light source side and brought close to the substrate. Thereby, the space between the incident surface of the light guide plate and the light source can be surrounded by the reflecting member without any gap.

  However, when the reflecting member is installed in the illumination device as shown in FIG. 9, it is difficult to surround the space between the incident surface of the light guide plate and the light source with the reflecting member without a gap. In the illuminating device shown in FIG. 9, the light source is arranged so that the substrate stands in a polygonal shape, and the LED element emits light to the outside of the polygonal shape. And the light-guide plate is cyclic | annular, and this ring-shaped inner peripheral surface becomes the incident surface (light-incident part) of the light from a light source.

  As shown in FIG. 9, when the reflection member is installed in a configuration in which the light sources are arranged in a polygonal shape and the incident surface (light incident portion) of the light guide plate is provided on the inner periphery of the ring-shaped light guide plate, The reflection member interferes with a screw for fixing the light source. For this reason, it is impossible to install the reflecting member in a state in which it is close to the substrate.

  Further, as shown in FIG. 10, it is possible to avoid interference between the reflecting member and the screw by providing a relief at a portion where the reflecting member interferes with the screw. However, in this case, the escape portion becomes a gap, light leaks from there, and the light utilization efficiency deteriorates.

  The present invention has been made in view of the above problems, and includes an illumination module capable of installing a reflecting member without causing light leakage even when a light source is fixed with screws. The purpose is to realize a lighting device.

  In order to solve the above problems, an illumination module of the present invention includes an annular light guide member having a first opening, and a light source having a light emitting element that emits light to the inner peripheral surface of the light guide member. An annular reflecting member having a second opening communicating with the first opening and covering the space between the light emitting element and the inner peripheral surface by being stacked on the light guide member. A fixing member for fixing the light source is provided on at least one side in the stacking direction of the reflecting member so as to protrude from the light source in the outer peripheral direction so that the light emitting element faces the inner peripheral surface. The reflective member is characterized in that a slit is formed so as to extend from the inner peripheral surface to the outer peripheral direction and sandwich the fixing member when viewed from the stacking direction.

  According to said structure, a light guide member is an annular member which has a 1st opening part, and a reflection member is an annular member which has a 2nd opening part connected with the said 1st opening part. . Further, the reflection member is disposed so as to be stacked on the light guide member and cover a space between the light emitting element and the inner peripheral surface of the light guide member. Furthermore, a fixing member for fixing the light source is provided on at least one side in the stacking direction of the reflecting member so as to protrude from the light source in the outer peripheral direction so that the light emitting element faces the inner peripheral surface. .

  When the lighting module having such a configuration is assembled, the fixing member protrudes from the light source in the outer circumferential direction. Therefore, when the reflecting member is installed on the light guide member from the upper side in the stacking direction, the fixing member and the reflecting member interfere with each other. End up.

  According to the above configuration, since the slit is formed in the reflecting member so as to extend from the inner circumferential surface to the outer circumferential direction and sandwich the fixing member when viewed from the stacking direction, the reflecting member is close to the light source in the reflecting member. The inner peripheral portion is flexible in the stacking direction.

  Therefore, even if the reflecting member contacts or interferes with the fixing member, the inner peripheral portion of the reflecting member bends. As a result, the reflecting member avoids the fixing member and covers the light emitting element from the upper side in the stacking direction. A member can be installed. As a result, even when the light source is fixed by the fixing member, it is possible to cover the light emitting element from both the upper and lower sides in the stacking direction, so that the light use efficiency is not reduced. Therefore, according to said structure, even when the light source is screwed and fixed, the illumination module which can install a reflection member, without producing light leakage is realizable.

  In the illumination module of the present invention, the shape of the first inner peripheral surface constituting the first opening, the shape of the second inner peripheral surface constituting the second opening, and the first inner periphery It is preferable that the shapes formed by the light sources facing the surface are both polygonal, and the slits are provided so as to extend from corners of the polygon formed by the second inner peripheral surface.

  As a result, the light from the light source can be uniformly guided in the outer circumferential direction of the light guide member, and the reflecting member can be installed without causing light leakage even when the light source is screwed and fixed. it can.

  In the illumination module of the present invention, the outer peripheral surface of the light guide member is an inclined surface that is inclined so as to become wider from the upper side to the lower side in the stacking direction, and a reflective layer is formed on the outer peripheral surface. It is preferable to be provided.

  According to said structure, the outer peripheral surface of the said light guide member becomes an inclined surface inclined so that it may become wide toward the lower side from the upper side in the said lamination direction, and a reflection layer is in the said outer peripheral surface. Since it is provided, the component which reaches | attains the outer peripheral side surface of a light guide member among the light which guides a light guide member reflects from a reflection layer. This reflected light is emitted to the outside from the emission surface of the light guide member. Therefore, according to said structure, it becomes possible to take out from the output surface of a light guide member by reflecting the light which arrives at the outer peripheral side surface of a light guide member by a reflection layer. As a result, the illumination intensity of the lighting module can be increased.

  In the illumination module of the present invention, it is preferable that the light source includes a substrate on which the light emitting element is mounted, and a base material for holding the light source is made of metal.

  Thus, the heat generated from the light source can be efficiently radiated or transferred.

  In order to solve the above-described problems, an illumination device of the present invention includes the above-described illumination module and a lighting unit that lights the light source.

  Therefore, according to said structure, even when the light source is screwed and fixed, the illuminating device which can install a reflection member, without producing light leakage is realizable.

  As described above, the illumination module of the present invention includes an annular light guide member having a first opening, a light source having a light emitting element that emits light to the inner peripheral surface of the light guide member, and the first light source. An annular reflection member that has a second opening that communicates with the opening, and is laminated on the light guide member to cover a space between the light emitting element and the inner peripheral surface, and the reflection member A fixing member for fixing the light source is provided so as to protrude from the light source in the outer peripheral direction so that the light emitting element faces the inner peripheral surface on at least one side in the stacking direction. Is a configuration in which a slit is formed so as to extend from the inner peripheral surface in the outer peripheral direction and sandwich the fixing member when viewed from the stacking direction.

  As described above, the illumination device of the present invention has the above-described illumination module and a lighting unit that lights the light source.

  Therefore, even when the light source is screwed and fixed, the reflecting member can be installed without causing light leakage.

The structure of the illumination module of one Embodiment of this invention is shown, (a) is a perspective view, (b) is a front view, (c) shows the internal structure of an illumination module, X of (b) -X sectional drawing. It is a top view which shows the structure of the light source shown in FIG. (A)-(c) is a perspective view which shows an example of the procedure in the assembly method of an illumination module. It is sectional drawing which shows typically operation | movement of the inner peripheral part close | similar to a light source when installing a reflection member in a light guide means. It is a perspective view which shows an example of the illuminating device provided with the illumination module of FIG. The structure of the illumination module of other embodiment of this invention is shown, (a) is a perspective view, (b) is a front view. It is sectional drawing which shows the outer periphery shape of the light guide means with which the illumination module of FIG. 6 was equipped. It is sectional drawing which shows the example of 1 structure of the conventional illumination module which uses the member by which the several LED element was linearly arranged on one board | substrate as a light source. It is a perspective view which shows the structure of the illumination module by which the light source is arrange | positioned so that the board | substrate which mounts an LED element may stand in polygonal shape. It is a top view which shows the structure of the reflection member which is used for the illumination module of FIG. 9, and has a relief part for the fixing components which fixes a light source.

[Embodiment 1]
One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a configuration of an illumination module 100 according to the present embodiment, where FIG. 1A is a perspective view, FIG. 1B is a front view, and FIG. 1C is an illumination module. FIG. 2 is a cross-sectional view taken along line XX in FIG. In the drawings of the present invention, the same reference numerals represent the same or corresponding parts.

(Configuration of lighting module)
As illustrated in FIG. 1, the illumination module 100 according to the present embodiment includes a light source 1, a light guide unit 2 (light guide member) that guides light emitted from the light source 1, and the light source 1 and the light guide unit 2. Is provided with a base 3 (base material) for holding the reflecting members 41 and 42. The reflection members 41 and 42 are disposed so as to cover the space (light coupling portion) between the light source 1 and the light guide means 2.

(Light source 1 and light guiding means 2)
FIG. 2 is a top view showing the configuration of the light source 1. As shown in FIG. 2, the light source 1 includes at least one light emitting element 12 and a substrate 11 on which the light emitting element 12 is mounted. The light source 1 is controlled by a light source control means (lighting means) (not shown), and output adjustment of the emitted light from the light source 1 is possible. The “illumination device” in the present invention means an apparatus including the illumination module 100 shown in FIG. 1 and the like and light source control means for controlling lighting of the light source 1 in the illumination module 100.

  In addition, as shown in FIG. 2, when the light emitting element 12 is composed of a plurality of light emitting elements having different light emission colors such as daylight white and light bulb color, the light output of each light emitting element is controlled by the light source control means. This makes it possible to adjust the color of the light emitted from the light source 1.

  For example, if control is performed so that only the daylight white light emitting element is turned on, the light emitted from the light source 1 becomes daylight white. Moreover, if it controls so that only the light emitting element of a light bulb color will light, the emitted light from the light source 1 will become a light bulb color. In addition, the color tone of the light emitted from the light source 1 can be changed by simultaneously turning on the daylight white light emitting element and the light emitting element of the light bulb color and adjusting the ratio of the amount of light of each color.

  The plurality of light sources 1 are arranged so that the substrate 11 stands in a dodecagonal shape, and the light emitting element 12 emits light toward the outside of the dodecagonal shape.

  The light source 1 is disposed so as to face the incident surface 21 of the light guide means 2. Light emitted from the light source 1 enters the incident surface 21 of the light guide unit 2 and is guided through the light guide unit 2 by repeating total reflection.

(About the light guide means 2)
The light guide means 2 is a plate-like member made of a material having translucency. The material of the light guide means 2 is an acrylic resin. The light guide means 2 has an incident surface 21 on which the outgoing light from the light source 1 is incident, and outgoing surfaces 22 and 23 that emit the light guided inside to the outside. A diffusion portion (not shown) is formed on at least one of the emission surfaces 22 and 23. This diffusing unit has a function of diffusing light guided inside the light guide means 2 and is configured by diffusing dots, prisms, microlenses, and the like. Further, the diffusing portion can be formed into a pattern of diffusing dots by printing the light diffusing material such as screen printing.

  The light emitted from the light source 1 is diffused when it is guided inside the light guide means 2 and enters the diffusion portion. The light diffused by the diffusing unit is incident on the exit surface 22 or 23. At this time, of the light diffused by the diffusing portion, the component that has entered the exit surface 22 or 23 at an angle that does not satisfy the total reflection condition (the total reflection condition is broken) is emitted from the exit surface 22 or 23 to the outside. Will do. In addition, a component incident on the emission surface 22 or 23 at an angle satisfying the total reflection condition is guided by the light guide means 2 while being totally reflected by the emission surface 22 or 23. In this way, the light guided inside the light guide means 2 is emitted from the emission surface 22 or 23 to the outside while being totally reflected and propagated by the action of the diffusion portion. As a result, the illumination module 100 can realize surface-emitting illumination and functions as an illumination device.

  The material of the light guide means 2 is not limited to acrylic resin, and may be any material as long as it has translucency and can extract light that guides the inside from the exit surface. For example, PC (polycarbonate) , PS (polystyrene) and the like.

  Moreover, the light guide means 2 may be comprised with the member by which the diffusing agent which diffuses light was added to the material which has translucency. When the light that guides the inside of the light guide means 2 enters the added diffusing agent, as in the case of entering the diffusing portion described above, the component that exits from the exit surface 22 or 23 and the exit surface 22 or 23, the component is totally reflected. As a result, the illumination module 100 can realize surface-emitting illumination and functions as an illumination device.

(About arrangement | positioning of the light source 1, and the member which fixes the light source 1 to the base 3)
As shown in FIGS. 1A and 1B, the plurality of light sources 1 are arranged upright so as to form a dodecagonal shape. Each light source 1 is fixed to the base 3 by a fixing component 5 (fixing member) such as a screw.

  When the light source 1 is turned on, the light emitting element 12 (see FIG. 2) generates heat. Therefore, in order to efficiently transfer or dissipate the heat generated from the light emitting element 12, the material of the base 3 is preferably a metal such as aluminum.

(Incident surface 21 of the light guide means 2)
The light guide means 2 has an opening (not shown; a first opening), and a plurality of light sources 1 fixed in a dodecagonal shape enter the opening. In the light guide means 2, the side wall surface constituting the opening is an incident surface 21 (first inner peripheral surface) on which light emitted from the light source 1 is incident. Therefore, the side wall constituting the opening of the light guide means 2 has a dodecagonal shape. The side wall surface (incident surface 21) corresponding to each side of the dodecagonal shape faces each side of the dodecagonal shape (that is, each light source 1) formed by the plurality of light sources 1. In other words, the light guide means 2 has an annular shape having an opening in the center, and the inner peripheral surface thereof is opposed to the light emitting element 12 and becomes an incident surface 21 on which light emitted from the light source 1 is incident. Yes.

  Light emitted from the light source 1 enters the incident surface 21, is guided from the incident surface 21 in the outer circumferential direction, and is emitted from the output surfaces 22 and 23 by the action of the diffusion unit or the diffusing agent described above.

(Regarding the space A (light coupling portion) between the light source 1 and the light guide means 2)
The light emitted from the light source 1 is emitted at a spread angle. Therefore, light having a relatively small exit angle is incident on the incident surface 21 of the light guide unit 2, while light having a relatively large exit angle is not incident on the incident surface 21 of the light guide unit 2 and is removed. . For this reason, a loss related to optical coupling occurs.

  The reflection members 41 and 42 are members for reducing this loss, and are arranged so as to cover the space A (light coupling portion) between the light source 1 and the incident surface 21 of the light guide means 2. As a result, of the light emitted from the light source 1, light having a relatively large emission angle and deviating from the incident surface 21 of the light guide means 2 is reflected by the reflecting members 41 and 42. And since a part of this reflected light enters into the entrance plane 21, it becomes possible to reduce the loss regarding optical coupling.

  The reflection members 41 and 42 are preferably disposed so that the end surfaces of the reflection members 41 and 42 are close to the substrate 11 and completely cover the periphery of the light emitting element 12.

(Structure of the reflecting members 41 and 42)
The reflecting members 41 and 42 have an opening (not shown; second opening) communicating with the opening of the light guide means 2. The inner periphery that forms the opening of the reflecting members 41 and 42 has a dodecagonal shape so as to correspond to the opening of the light guide means 2. Further, as shown in FIG. 1C, the reflecting member 41, the light guide means 2, and the reflecting member 42 are laminated in this order. In the following description, the stacking direction of the reflecting member 41, the light guide unit 2, and the reflecting member 42 is defined as the Z direction. Further, “upper side” means the reflection member 42 side when the light guide means 2 is used as a reference, and “lower side” means the reflection member 41 side. In the lighting device shown in FIG. 5 described later, “lower side” refers to the floor surface side, and “upper side” refers to the ceiling side.

  The inner peripheral surfaces 41a and 42a of the reflecting members 41 and 42 are close to the substrate 11 of the light source 1, respectively. The reflecting members 41 and 42 cover the light emitting element 12 from both the upper and lower sides in the Z direction.

  As described above, the light source 1 and the illumination module 100 include the annular light guide means 2 having an opening, and the annular reflecting members 41 and 42 having openings that communicate with the opening of the light guide 2. ing. The light source 1 includes a light emitting element 12 that emits light to an incident surface 21 that is an inner peripheral surface of the light guide unit 2. In addition, the reflecting members 41 and 42 are stacked on the light guide unit 2 to cover the space A between the light emitting element 12 and the incident surface 21.

  Further, as shown in FIG. 1C, the fixed component 5 protrudes from the light source 1 in the outer circumferential direction on the upper side (the reflective member 42 side) in the stacking direction (Z direction) of the reflective members 41 and 42. Is provided. The fixing component 5 fixes the light source 1 to the base 3 as a base material so that the light emitting element 12 faces the incident surface 21.

(Characteristic configuration of lighting module 100)
In the illumination module 100, at least two slits 42 b are formed in the reflecting member 42 that covers the light emitting element 12 from the fixed component 5 side. As can be seen from FIGS. 1B and 1C, the slit 42 b extends from the inner peripheral surface 42 a (second inner peripheral surface) of the reflecting member 42 in the outer peripheral direction. And it sees from a Z direction (refer (b) of FIG. 1), and it forms so that the fixing component 5 may be pinched | interposed. More specifically, the slit 42b is formed so as to extend in the outer circumferential direction from each corner of the dodecagonal inner circumferential surface 42a that forms the opening of the reflecting member 42. And the fixed component 5 which fixes the light source 1 is distribute | arranged between the two slits 42b seeing from a Z direction.

  Thus, since the slit 42b is formed, the inner peripheral part 42c close to the light source 1 in the reflection member 42 is flexible in the Z direction. Therefore, even when the light source 1 is fixed by the fixing component 5, it is possible to install the reflecting member 42 on the light guide unit 2 from the upper side in the Z direction without causing light leakage.

  Here, an example of the procedure of the assembly method of the illumination module 100 will be described. FIGS. 3A to 3C are perspective views illustrating an example of a procedure in the method for assembling the illumination module 100.

  First, as shown in FIG. 3A, the reflecting member 41 is installed on the base 3. The base 3 has a cylindrical portion 3A having a dodecagonal prism. The light source 1 is fixed to the outer periphery of the cylindrical portion 3A. The reflective member 41 is installed on the base 3 by inserting the cylindrical portion 3 </ b> A into the opening of the reflective member 41. At this time, the inner peripheral surface 41a of the reflecting member 41 is in a state close to the outer periphery of the cylindrical portion 3A.

  Next, as shown in FIG. 3B, the light source 1 is fixed to the outer periphery of the cylindrical portion 3 </ b> A in the base 3 with a fixing component 5.

  Next, the light guide means 2 is installed from the upper side in the Z direction in the configuration shown in FIG. At this time, the light guide unit 2 is installed so that the incident surface 21 (inner peripheral surface) faces the light emitting element 12 of the light source 1. In other words, the light guide means 2 is installed so that each corner of the dodecagon formed by the light source 1 corresponds to each corner of the dodecagon formed by the incident surface 21 when viewed from above in the Z direction. . Next, the reflecting member 42 is laminated on the light guide means 2 from the upper side in the Z direction. At this time, the reflection member 42 is installed so that each corner portion of the inner peripheral surface 42 a having a dodecagon shape matches with each corner portion of the dodecagon shape formed by the light source 1 when viewed from the upper side in the Z direction.

  FIG. 4 is a cross-sectional view schematically showing the operation of the inner peripheral portion 42 c close to the light source 1 when the reflecting member 42 is installed on the light guide means 2 from the upper side in the Z direction. Since the slits 42b are formed at the respective corners of the dodecagonal inner peripheral surface 42a, the inner peripheral part 42c of the reflecting member 42 adjacent to the light source 1 is flexible in the Z direction.

  When the reflecting member 42 is installed on the light guide unit 2 from the upper side in the Z direction, the reflecting member 42 and the fixed component 5 interfere with each other. When interfering with the fixed component 5, the inner peripheral portion 42 c of the reflecting member 42 is in contact with the fixed component 5 in a bent state and is not in contact with the light guide means 2. When the reflecting member 42 is further pushed downward in the Z direction, the outer peripheral portion 42 d of the reflecting member 42 is in contact with the light guide means 2. At this time, a restoring force directed downward in the Z direction acts on the inner peripheral portion 42c of the reflecting member 42 so as to be at the same level as the outer peripheral portion 42d. And with this restoring force, the inner peripheral part 42c slides the fixed component 5, and is arrange | positioned below the Z direction of the fixed component 5. FIG. As a result, the reflecting member 42 avoids the fixed component 5 and covers the light emitting element 12 from the upper side in the Z direction.

  The configuration of the finally assembled lighting module 100 is shown in FIG. As shown in (c) of FIG. 3, the reflecting member 42 is disposed below the fixed component 5 in the Z direction. The light emitting element 12 of the light source 1 is covered by the reflecting member 42, while the fixing component 5 that fixes the light source 1 is exposed to the outside of the reflecting member 42 without being covered by the reflecting member 42.

  For example, as in the technique of FIG. 10 described above, when the reflection member 42 is provided with a relief portion for the fixed component 5, the reflection member 42 can be installed from the upper side in the Z direction without interfering with the fixed component 5. . However, in this case, the light emitting element 12 is not covered (exposed) by the reflecting member 42 at the place where the relief portion is provided. For this reason, all the components emitted in the direction of the escape portion in the emitted light of the light emitting element 12 are lost. As a result, light utilization efficiency is reduced.

  On the other hand, according to the configuration of the illumination module 100 of the present embodiment, as described above, the reflecting member 42 extends from the inner peripheral surface 42a to the outer peripheral direction and is viewed from the Z direction ((b) in FIG. 1). And the fixing part 5 is sandwiched between them. For this reason, even if the reflecting member 42 is installed from the upper side in the Z direction, the fixed component 5 can be avoided and the light emitting element 12 can be covered from the upper side in the Z direction. As a result, even when the light source 1 is fixed by the fixing component 5, it is possible to cover the light emitting element 12 from both the upper side in the Z direction and the lower side in the Z direction, so that the light use efficiency is not reduced. .

[Embodiment 2]
(About the structure of the lighting device)
The following will describe another embodiment of the present invention with reference to FIG. Here, the illuminating device provided with the illumination module 100 of the above-mentioned embodiment is demonstrated.

  The illuminating device of this embodiment has a configuration including an illumination module 100 and light source control means for controlling lighting of the light source 1 in the illumination module 100. FIG. 5 is a perspective view showing an example of such an illumination device. In addition, the illuminating device of this embodiment is not limited to the structure shown by FIG.

  The lighting device illustrated in FIG. 5 includes a lighting module 100 and an upper housing portion 101. The upper housing part 101 is installed on the ceiling. Housed in the upper housing 101 is a light source control means for controlling lighting of the light source 1 in the illumination module 100, and a power supply unit. Further, the light source control means and the power supply unit housed in the upper housing unit 101 are connected to the illumination module 100 via the wiring 103. Further, a wire 102 is interposed between the illumination module 100 and the upper housing part 101. An end on the ceiling side (upper side) of the wire 102 is fixed to the upper housing part 101, and an end on the floor side (lower side) of the wire 102 is fixed to the lighting module 100. The illumination module 100 is in a state of being hung by a wire 102 from an upper housing part 101 fixed to the ceiling.

[Embodiment 3]
The following will describe still another embodiment of the present invention with reference to FIG. 6A and 6B show a configuration of the illumination module 200 of the present embodiment, in which FIG. 6A is a perspective view and FIG. 6B is a front view. For convenience of explanation, members having the same functions as those in the drawings explained in the first embodiment are given the same reference numerals and explanations thereof are omitted.

  In the illumination module 200 of the present embodiment, as shown in FIGS. 6A and 6B, the outer peripheral surface of the light guide means 2 is inclined, and a reflective layer is provided on the outer peripheral surface. Different from the illumination module 100 of the first embodiment. Hereinafter, the outer peripheral shape of the light guide means 2 will be described in detail.

(Outer peripheral shape of the light guide means 2)
FIG. 7 is a cross-sectional view showing the outer peripheral shape of the light guide means 2. FIG. 7 also shows an optical path of light guided through the light guide unit 2.

  As shown in FIGS. 6 and 7, the outer peripheral surface 24 of the light guide unit 2 is inclined so as to become wider from the upper side to the lower side in the Z direction. A reflective layer 25 is provided on the outer peripheral surface 24 of the light guide means 2.

(Effects of outer shape and reflective layer)
Based on FIG. 7, the outer periphery shape of the light guide means 2 and the effect of the reflective layer 25 are demonstrated below.

  As shown in FIG. 7, the light emitted from the light emitting element 12 travels while totally reflecting the inside of the light guide means 2, and is emitted by the above-described diffusion part (for example, a diffusion pattern) or the added diffusion agent. The light exits from the surfaces 22 and 23.

  Among the light guided in the light guide means 2, the component that does not enter the diffusing portion or the diffusing agent repeats total reflection and finally reaches the outer peripheral surface 24 of the light guide means 2. Here, according to the illumination module 2 of the present embodiment, the outer peripheral surface 24 of the light guide means 2 is inclined so as to become wider from the upper side to the lower side in the Z direction, and the outer peripheral surface 24 is reflected by Since the layer 25 is provided, the light that has reached the outer peripheral surface 24 is reflected by the reflective layer 25 and is emitted from the emission surface 22 to the outside.

  When the outer peripheral surface 24 is not inclined and the reflective layer 25 is not provided on the outer peripheral surface 24, the light that reaches the outer peripheral surface 24 is emitted from the outer peripheral surface 24. Therefore, there is a loss in the illumination module 200 that uses the light emitted from the emission surfaces 22 and 23 as illumination light.

  In this way, by making the outer peripheral surface 24 an inclined surface and providing the reflective layer 25 on the outer peripheral surface 24, light reflected from the reflective layer 25 can be extracted from the emission surface 22. As a result, the illumination intensity of the lighting module can be increased.

  As described above, according to the lighting module of the present invention, the reflecting member 42 extends from the inner peripheral surface 42a to the outer peripheral direction and is seen from the Z direction (see FIG. 1B), and the fixed component 5 It is formed so as to sandwich. For this reason, even if the reflecting member 42 is installed from the upper side in the Z direction, the fixed component 5 can be avoided and the light emitting element 12 can be covered from the upper side in the Z direction. As a result, even when the light source 1 is fixed by the fixing component 5, it is possible to cover the light emitting element 12 from both the upper side in the Z direction and the lower side in the Z direction, so that the light use efficiency is not reduced. . Therefore, an illumination module with high light utilization efficiency can be realized.

  Further, by mounting the lighting module of the present invention on an electronic device such as a lighting device, a lighting device with high light utilization efficiency can be realized.

  The light emitting element 12 may be any light source that can couple light to the light guide means 2, and examples thereof include an LED and an organic EL.

  Further, in the illumination module of the present invention, the arrangement of the light source 1, the shape of the inner peripheral surface (incident surface 21) that forms the opening of the light guiding means 2, and the inner peripheral surface 42 a that forms the opening of the reflecting member 42. The shape is a dodecagon. However, these shapes are not limited to a dodecagon, and may be a polygon that is a triangle or more.

[Supplement]
The present invention can also be expressed as follows.

  [1] A light source composed of at least one light emitting element, a base that holds the light source in a polygonal shape, a fixing component that fixes the light source to the base, and guides light from the light source. An illumination device having a light guide means and a reflective member that covers a coupling portion between the light source and the light guide means, wherein the reflective member has a polygonal opening having the same number of angles as the light source held by the base And a slit is provided at a corner of the polygonal opening.

  [2] The illumination module according to [1], wherein an outer periphery of the light guide unit has an inclined shape, and a reflective layer is provided on the inclined shape.

  [3] An illumination device comprising the illumination module according to any one of [1] and [2] and lighting means for lighting a light source.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  The lighting module of the present invention and the lighting device including the lighting module can be applied to lighting devices in general such as a lighting device that is suspended from a ceiling and a lighting device that is placed on a desk. And as an application field, it can apply to various lighting fixtures, such as facilities, such as a store and an office, and business.

DESCRIPTION OF SYMBOLS 1 Light source 11 Board | substrate 12 Light emitting element 2 Light guide means 21 Incident surface (1st internal peripheral surface)
22 exit surface 23 exit surface 24 outer peripheral surface 25 reflective layer 3 base (base material)
41 reflective member 41a inner peripheral surface 42 reflective member 42a inner peripheral surface (second inner peripheral surface)
42b Slit 42c Inner peripheral part 5 Fixed part (fixing member)
100 lighting module 200 lighting module

Claims (5)

An annular light guide member having a first opening;
A light source having a light emitting element that emits light to the first inner peripheral surface of the light guide member;
An annular reflecting member that has a second opening that communicates with the first opening, and is stacked on the light guide member to cover a space between the light emitting element and the first inner peripheral surface; With
A fixing member for fixing the light source is provided on at least one side in the stacking direction of the reflecting member so as to protrude from the light source in the outer peripheral direction so that the light emitting element faces the first inner peripheral surface. And
An illumination module, wherein a slit is formed in the reflecting member so as to extend from the second inner peripheral surface to the outer peripheral direction and sandwich the fixing member when viewed from the stacking direction. The shape of the first inner peripheral surface constituting the first opening, the shape of the second inner peripheral surface constituting the second opening, and the light source facing the first inner peripheral surface Both shapes are polygonal,
The illumination module according to claim 1, wherein the slit is provided to extend from each corner of a polygon formed by the second inner peripheral surface.   The outer peripheral surface of the light guide member is an inclined surface that is inclined so as to become wider from the upper side to the lower side in the stacking direction, and a reflective layer is provided on the outer peripheral surface. The illumination module according to claim 1 or 2. The light source includes a substrate on which the light emitting element is mounted,
The illumination module according to any one of claims 1 to 3, wherein the base material for holding the light source is made of metal. The illumination module according to any one of claims 1 to 4,
An illumination device comprising: lighting means for lighting the light source.

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