JP5789214B2 - Lighting device - Google Patents

Description

  The present invention includes a light source container in which a light source module including a light emitting diode as a light source is accommodated, a reflecting plate that reflects light from the light source, a cylindrical body that diffuses and transmits light from the light source, and a light source container The present invention relates to a lighting device including a reflector and a connecting body that connects cylindrical bodies.

  In recent years, lighting devices using light-emitting diodes (LEDs) as light sources are generally more energy efficient than fluorescent lamps and incandescent bulbs, and have a long lifetime, so that their applications are rapidly expanding. However, the light emitted from the LED has high directivity, and in the state as it is, strong light is irradiated locally. For this reason, in order to irradiate a certain amount of light over a certain area, it is necessary to diffuse the light emitted from the LED.

  As a method of diffusing the light from the LED, a concave portion (hereinafter also referred to as a reflective plate concave portion) is formed in a flat plate material having excellent light reflectivity, and an opening formed at the bottom of the reflective plate concave portion is used. It has been proposed to cause an LED to protrude into the reflector recess and to reflect and diffuse the LED light on the inner surface of the reflector recess. The lighting device including such a reflection plate is formed so as to cover a light source module including a plurality of LEDs arranged in a planar shape, a reflection plate formed to cover the light source module, and the reflection plate. There has been proposed one having a diffuser plate that diffuses and transmits light from a light source. In such an illuminating device, a reflecting plate recess is formed at a position corresponding to the LED of the light source module, and the light emitted from the LED protruding into each reflecting plate recess and the light reflected by the reflecting plate are diffused. Since the light passes through the diffusion plate while being diffused in the above, it is possible to irradiate a certain amount of light from a planar region (Patent Document 1 below).

International Publication WO2007 / 037035

  However, the illumination device as described above has a large size because a plurality of LEDs are arranged in a planar shape, and the installation space is limited. In addition, since the light source module, the reflector, and the diffuser plate are large, when manufacturing the lighting device, it is difficult to handle each member, and it is necessary to stack and fix each member sequentially. The lighting device cannot be manufactured efficiently.

  Then, this invention makes it a subject to provide the illuminating device using LED as a light source, Comprising: It is smaller and can be manufactured easily.

  An illumination device according to the present invention includes a light source container in which a light source module including a light emitting diode as a light source is accommodated, a reflection plate that reflects light from the light source, and an axial direction that is formed in a longitudinal direction. A cylindrical body that transmits light while diffusing, a light source container, a reflector, and a connecting body that connects the cylindrical bodies, and the light source container is orthogonal to the axis of the cylindrical body. A container recess formed to have a concave cross-sectional shape and housing the light source module; and a container flange extending outward from an end located in the opening direction of the container recess, The reflection plate is formed so that a cross-sectional shape orthogonal to the axis of the cylindrical body is concave, and a reflection plate having an inner wall surface formed to incline outward from the bottom toward the opening direction. Plate recess and opening of the reflector recess A light source container and a reflection plate in a state where the reflection plate recess is received in the storage unit recess, and a bottom portion of the reflection plate recess. The light source protrudes from the opening formed in the reflector into the concave part of the reflector, and the container flange part and the reflector plate flange part overlap each other, and the coupling body includes the overlapping container flange part and the reflector plate. A flange insertion portion for inserting the flange portion and a protrusion insertion portion for inserting the cylindrical body protrusion protruding from the inner surface of the cylindrical body, and the overlapping housing flange portion and reflector flange portion are inserted into the flange insertion portion. In this state, the light source container and the reflection plate are coupled by the coupling body, and the coupled light source container and the reflection plate are accommodated in the cylindrical body along the axis of the cylindrical body. Projection is projection Wherein the inserted into join the club and the light source container and the reflector are connected to the tubular body by a connecting member.

  According to such a configuration, the light source container and the reflecting plate can be handled as a unit by connecting the light source container and the reflecting plate by the connecting body. For this reason, the light source container and the reflector can be efficiently accommodated in the cylindrical body, compared with the case where the light source container and the reflector are separately accommodated inside the cylindrical body, and the lighting device can be easily installed. Can be formed. Moreover, since it becomes a rod-shaped illuminating device along the axis of a cylindrical body, it becomes smaller than the case where it is formed in a planar shape, and the space required for installation can be reduced.

  In addition, in a state where the reflecting plate recess is housed inside the housing recess, the light source projects inside the reflecting plate recess so that the inner surface of the reflecting plate recess is closer to the light source than the inner surface of the housing recess. For this reason, light stronger than giving light reflectivity to the inner surface of the container recess is reflected. And it forms so that the inner wall face of a reflecting plate recessed part may incline toward the outside, and light is efficiently reflected toward the open direction of a reflecting plate recessed part.

  For this reason, brighter light is irradiated toward the opening direction of the reflector recess. Then, the light is diffused while being transmitted through the cylindrical body, so that the light is irradiated in a region other than the region corresponding to the light source. Further, a part of the light irradiated toward the opening direction of the reflecting plate concave portion is reflected by the cylindrical body, travels again toward the reflecting plate, is reflected again by the reflecting plate (multiple reflection), and is diffused. In this way, an illumination device that emits uniform light can be obtained by diffusion of light due to the cylindrical body and multiple reflection.

  In addition, the cylindrical body projecting portion is inserted into the projecting portion insertion section, and the light source container and the reflector are connected to the cylindrical body via the coupling body, thereby rotating the lighting device around the axis of the cylindrical body. Thus, the light irradiation direction can be arbitrarily set.

  The reflecting plate includes a plurality of reflecting plate recesses along the axis of the cylindrical body, and a partition wall that partitions the spaces formed inside the reflecting plate recesses is formed between the reflecting plate recesses. The pair of partition walls facing each other so that the reflector concave portion is positioned between them are formed such that the distance between the opposing wall surfaces increases from the bottom of the reflector concave portion toward the opening direction of the reflector concave portion. It is preferable that at least one light source protrudes into a space defined by the opposing surfaces of the pair of opposing partition walls and the inner surface of the reflecting plate recess.

  According to such a configuration, by further including a plurality of partition wall portions, more light is reflected by the inner surface of the reflecting plate recess and the opposing wall surfaces of the pair of partition wall portions. For this reason, brighter light can be irradiated toward the opening direction of a reflecting plate recessed part. Thereby, it becomes an illuminating device which irradiates brighter light uniformly.

  Moreover, the rigidity of the direction orthogonal to the direction along the axis of the cylindrical body in a reflecting plate can be improved by further providing a some partition wall part. Thereby, workability | operativity at the time of connecting with a light source container by a connection body can be improved.

  It is preferable that the end of the partition wall portion positioned in the opening direction of the reflecting plate recess is located on the bottom side of the reflecting plate recess than the end positioned in the opening direction of the reflecting plate recess.

  According to such a configuration, the end of the partition wall portion located in the opening direction of the reflecting plate recess is located on the bottom side of the reflecting plate recess than the end located in the opening direction of the reflecting plate recess. The rigidity of the reflecting plate in the direction along the axis of the cylindrical body can be improved. Thereby, workability | operativity at the time of connecting with a light source container by a connection body can be improved.

  Moreover, since the edge part of such a partition wall part has the effect | action which converges the light which goes to the opening direction of a reflecting plate recessed part, when a reflecting plate is accommodated in a cylindrical body, it is adjoining with a cylindrical body. And it becomes difficult for light to reach between the end of the partition wall and the cylindrical body. For this reason, the light quantity of the area | region corresponding to the edge part of the partition wall part in a cylindrical body falls, and a nonuniformity will arise in a light quantity. On the other hand, since the end of the partition wall is positioned on the bottom side of the reflector recess, the interval between the end of the partition wall and the cylindrical body is widened, so the end of the partition wall It becomes easy for light to reach between the tube and the cylindrical body. Thereby, it becomes an illuminating device which irradiates brighter light uniformly.

  The reflecting plate flange portion is preferably formed so that a cross-sectional shape perpendicular to the axis of the cylindrical body is convex.

  According to such a configuration, the reflector flange portion is formed so that the cross-sectional shape perpendicular to the axis of the cylindrical body is convex, and thus the axis of the cylindrical body in the reflector flange portion is aligned. Directional rigidity can be improved.

  It is preferable that the reflector is configured such that a space is formed between the reflector and the light source module in a state where the reflector is connected to the light source container.

  According to such a configuration, in a state where the light source container and the reflection plate are connected by the connection body, a space is formed between the reflection plate and the light source module, so that the heat released from the light source module is reduced. It is diffused through the space between the reflector and the light source module. For this reason, the heat from the light source module is directly transmitted to the reflecting plate, and a local temperature rise is prevented. Thereby, problems such as an increase in electrical resistance of the light source module can be prevented.

  The reflecting plate is preferably formed by thermoforming a thermoplastic resin sheet.

  According to such a configuration, since the reflecting plate is formed by thermoforming the thermoplastic resin sheet, the reflecting plate can be easily manufactured. Moreover, it is easier to produce a complicated shape than when the thermoplastic resin sheet is bent, and it is possible to prevent a decrease in reflectivity due to the crease formed by the bending process.

  As described above, according to the present invention, a lighting device using an LED as a light source can be manufactured more compactly and easily.

The perspective view which showed the structural article of the illuminating device which concerns on this embodiment. The perspective view which showed the light source container of the illuminating device which concerns on the same embodiment. (A) is the perspective view which showed the cross section orthogonal to the longitudinal direction of the reflecting plate of the illuminating device which concerns on the embodiment, (b) is the top view which showed the cross section of the longitudinal direction of the reflecting plate. The perspective view which showed the coupling body of the illuminating device which concerns on the same embodiment. (A) is sectional drawing which showed the cross section orthogonal to each longitudinal direction in the state with which the light source container of the embodiment and the reflecting plate overlapped, (b) is a connection body with a light source housing and a reflecting plate. Sectional drawing which showed the cross section orthogonal to each longitudinal direction in the state connected with each other. (A) is sectional drawing which showed the cross section orthogonal to each longitudinal direction in the state in which the light source container, the reflecting plate, and the connection body were accommodated in the cylindrical body, (b) is the same embodiment. The perspective view of an illuminating device. (A)-(d) is the perspective view which showed the reflecting plate of the illuminating device which concerns on other embodiment. Furthermore, in other embodiment, sectional drawing which showed the cross section orthogonal to each longitudinal direction in the state in which the light source container and the reflecting plate were connected by the coupling body.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the illumination device according to the present embodiment includes a cylindrical body 1 that diffuses and transmits light, a light source container 2 that houses a light source L, and a reflector that reflects light from the light source L. 3, a tubular body 1, a light source container 2, and a connecting body 4 that connects the reflector 3, and a pair of caps 5 and 5 that are inserted into a socket for supplying current. The light source container 2 and the reflector 3 are accommodated inside the cylindrical body 1 along the axis of the cylindrical body 1, and a pair of caps 5, 5 are attached to both ends of the cylindrical body 1. Is formed.

  The cylindrical body 1 is formed so that the axial direction is long. In the present embodiment, the cylindrical body 1 is formed in a cylindrical shape. Moreover, the cylindrical body 1 has openings 1a and 1a at both ends. Moreover, the cylindrical body 1 is provided with the cylindrical body protrusion part 1b which protrudes from an internal peripheral surface. The tubular body protruding portion 1 b is formed along the axis of the tubular body 1. Specifically, the cylindrical protrusion 1b is formed in a straight line over the entire area between the openings 1a and 1a formed at both ends of the cylindrical body 1. In the present embodiment, a pair of cylindrical protrusions 1b are formed.

  The light source container 2 is formed to be elongated along one direction. The length of the light source housing 2 is not particularly limited. In the present embodiment, a length shorter than the length of the cylindrical body 1 in the axial direction is used. The light source container 2 is configured to house a light source module L1 including a light emitting diode as the light source L. Specifically, the light source container 2 is formed in a concave shape (more specifically, a cross-sectional shape orthogonal to the longitudinal direction is concave), and is configured to accommodate the light source module L1 inside. In the present embodiment, the light source module L1 is formed so as to be longitudinal along the longitudinal direction of the light source container 2, and a plurality of light sources L are linearly arranged at equal intervals along the longitudinal direction. .

  The light source container 2 will be described in more detail. As shown in FIG. 2, the light source container 2 is formed in a concave shape so as to accommodate the light source module L1, and in the opening direction of the container concave part 2a. And a container flange portion 2b extending outward from the positioned end portion. Here, “outward” refers to a direction orthogonal to the axis of the cylindrical body 1 in a state where the light source container 2 is stored in the cylindrical body 1 (that is, a direction orthogonal to the longitudinal direction of the light source container 2). And the direction which goes to the outer side from the inner side of the container recessed part 2a is said.

  The container recess 2a includes a container bottom 2c on which the light source module L1 is placed, and a pair of container first walls 2d and 2d formed in an opening direction from the end of the container bottom 2c. The pair of container second wall portions 2e and 2e are formed from the respective end portions of the pair of container first wall portions 2d and 2d toward the opening direction.

  The container bottom portion 2 c is formed in a flat plate shape that is long along the longitudinal direction of the light source container 2. The container bottom 2c is configured to be in close contact with the light source module L1. The container first wall 2d and the container second wall 2e are arranged along the longitudinal direction of the light source container 2 (that is, the container bottom 2c) (specifically, the entire area between both ends in the longitudinal direction). A). The container first wall 2d is formed so as to be substantially orthogonal to the container bottom 2c. On the other hand, the container second wall 2e is formed so as to be inclined outward from the container bottom 2c.

  The container flange 2b is formed to extend outward from the end of the container second wall 2e located in the opening direction of the container recess 2a. The container flange portion 2b is formed along the longitudinal direction of the light source container 2 (specifically, over the entire area between both ends in the longitudinal direction).

  In addition, it does not specifically limit as a material which forms the light source container 2, In this embodiment, the light source container 2 is formed by bending a plate-shaped material. Such a plate-shaped material is not particularly limited. For example, it is preferable to use a material having a high thermal conductivity (metal such as aluminum). By forming the light source container 2 using such a material, the heat of the light source module L1 can be dissipated to the outside of the light source container 2, and the temperature rise of the light source module L1 can be suppressed. it can.

  Returning to FIG. 1, the reflecting plate 3 is formed to be long in one direction. The length of the reflecting plate 3 is not particularly limited, and in this embodiment, a length shorter than the length of the cylindrical body 1 in the axial direction is used. Moreover, the reflecting plate 3 has a concave shape (specifically, a cross-sectional shape orthogonal to the longitudinal direction is concave). The reflector 3 includes a plurality of such concave regions (reflector recesses 3a described later). A plurality of such concave regions are formed along the longitudinal direction of the reflecting plate 3. And the reflecting plate 3 is provided with the partition wall part 3b which partitions off the space formed inside the area | region used as each concave shape between the areas used as each concave shape.

  The reflecting plate 3 will be described in more detail. As shown in FIG. 3A, the reflecting plate 3 is accommodated in the tubular body 1, and the axis of the tubular body 1 (in other words, the reflecting plate). And a reflector flange portion extending outward from an end located in the opening direction of the reflector recess 3a. 3c. In the present embodiment, a plurality of reflecting plate recesses 3 a are formed along the axis of the cylindrical body 1 (in other words, the longitudinal direction of the reflecting plate 3). And the partition wall part 3b which partitions off the space formed inside each reflecting plate recessed part 3a is formed between each reflecting plate recessed part 3a. Here, outward refers to a direction perpendicular to the axis of the cylindrical body 1 in a state where the reflective plate 3 is accommodated in the cylindrical body 1, and a direction from the inner side to the outer side of the reflective plate recess 3a. Say.

  The reflective plate recess 3a includes a reflective bottom portion 3d formed in a flat plate shape (specifically, a quadrangular shape in plan view), and a pair of opposed reflections formed in the opening direction from the end of the reflective bottom portion 3d. It is comprised from wall part 3e, 3e. The reflecting plate recess 3a includes a reflecting inner wall surface 3f formed to incline outward from the reflecting bottom 3d in the opening direction.

  The reflective bottom 3d includes an opening 3g formed so as to penetrate in the thickness direction. The opening 3g is configured such that the light source L can be inserted from the outside of the reflector recess 3a. The reflection inner wall surface 3f is formed so that the opposing surfaces of the pair of reflection wall portions 3e and 3e facing each other are inclined outward from the reflection bottom portion 3d in the opening direction. That is, the reflecting plate recess 3a includes a pair of opposing reflecting inner wall surfaces 3f and 3f.

  The reflector flange 3c is formed to extend outward from the end of the reflector wall 3e located in the opening direction of the reflector recess 3a. Moreover, the reflecting plate flange portion 3c is formed along the longitudinal direction of the reflecting plate 3 (specifically, over the entire area between both ends in the longitudinal direction). Moreover, the reflecting plate flange portion 3c is formed so that the cross-sectional shape orthogonal to the axis of the cylindrical body 1 (in other words, the longitudinal direction of the reflecting plate 3) is convex. Specifically, the reflecting plate flange portion 3c is formed in a convex shape by forming a step between the region 3h on the reflecting plate recess 3a side and the region 3i on the side far from the reflecting plate recess 3a. It is configured. In the present embodiment, the reflecting plate flange portion 3c is formed such that the region 3i on the side away from the reflecting plate recess 3a is located closer to the reflecting bottom 3d side than the region 3h on the reflecting plate recess 3a side.

  The partition wall 3b is formed so as to be substantially orthogonal to the axis of the cylindrical body 1 (in other words, the longitudinal direction of the reflecting plate 3). A plurality of partition wall portions 3 b are arranged at regular intervals along the longitudinal direction of the reflecting plate 3 (at equal intervals). And as shown in FIG.3 (b), a pair of opposing partition wall part 3b, 3b is formed so that the space | interval of opposing wall surface 3j, 3j may become wide toward the open direction of the reflecting plate recessed part 3a. ing. Thereby, the space demarcated by a pair of opposing partition wall parts 3b and 3b and the reflecting plate recessed part 3a has a polygonal frustum shape. In the present embodiment, the partition wall 3b has the end 3k positioned on the opening direction side of the reflecting plate recess 3a positioned on the reflecting bottom 3d side of the opening 3m in the opening direction of the reflecting plate recess 3a. .

  In addition, it does not specifically limit as a material which forms the reflecting plate 3, In this embodiment, the reflecting plate 3 is formed by thermoforming a plate-shaped material. Although it does not specifically limit as such a plate-shaped material, For example, it is preferable to use a thermoplastic resin sheet.

    Returning to FIG. 1, the connecting body 4 is formed to be long in one direction. The length of the connection body 4 is not particularly limited, and in the present embodiment, a length slightly longer than the length of the cylindrical body 1 in the axial direction is used. Moreover, the connection body 4 has a concave shape (specifically, a cross-sectional shape orthogonal to the longitudinal direction is concave). And the connection body 4 is comprised so that accommodation of the light source container 2 and the reflecting plate 3 is possible inside.

  The connecting body 4 will be described in more detail. As shown in FIG. 4, the connecting body 4 has a concave cross-sectional shape perpendicular to the axis of the cylindrical body 1 (in other words, the longitudinal direction of the connecting body 4). And a pair of connecting body wall portions 4b and 4b that are formed in the opening direction from the end of the connecting body bottom portion 4a and face each other. Moreover, the connection body 4 is provided with the flange insertion part 4c which inserts the container flange part 2b and the reflecting plate flange part 3c, and the protrusion part insertion part 4d which inserts the cylindrical body protrusion part 1b. The flange insertion portion 4c and the protrusion insertion portion 4d are formed on the connecting body wall portion 4b. That is, in this embodiment, the flange insertion part 4c and the protrusion insertion part 4d are each formed in a pair on the connection body 4.

  The flange insertion portion 4c is formed in a concave shape so as to open inside the connecting body 4 (specifically, in a direction opposite to the pair of connecting body wall portions 4b and 4b). Moreover, the flange insertion part 4c is along the axis line (in other words, the longitudinal direction of the connection body 4) of the cylindrical body 1 (specifically, covering the entire region between both ends in the longitudinal direction of the connection body 4). Is formed. That is, the flange insertion portion 4 c is formed in a groove shape along the longitudinal direction of the connection body 4.

  On the other hand, the protruding portion insertion portion 4d is formed in a concave shape so as to open to the outside of the connection body 4. Further, the protrusion insertion portion 4d extends along the axis of the cylindrical body 1 (in other words, the longitudinal direction of the connecting body 4) (specifically, over the entire region between both ends in the longitudinal direction of the connecting body 4). ) Is formed. That is, the protruding portion insertion portion 4 d is formed in a groove shape along the longitudinal direction of the coupling body 4.

  In addition, it does not specifically limit as a material which forms the connection body 4, In this embodiment, the connection body 4 is formed by thermoforming (injection molding etc.) of the resin material. Such a resin material is not particularly limited. For example, it is preferable to use a thermoplastic resin.

  Returning to FIG. 1, the base 5 includes a cylindrical base body 5 a with one end closed, and a pair of base pins 5 b and 5 b. The base body 5a is formed using a resin material (preferably having heat resistance). On the other hand, the pair of base pins 5b, 5b are made of, for example, a metal such as aluminum or copper, and are disposed so as to penetrate the base body 5a. One end portion is located outside the base body 5a, and the other end portion is formed. It is located inside the base body 5a. And in the state in which the illuminating device was formed, the other end part of a pair of cap pins 5b and 5b is electrically connected via the wiring pattern of the light source module L1, and a lead wire.

  Next, about the flow which forms an illuminating device using the cylindrical body 1 which has the above structures, the light source container 2, the reflecting plate 3, the connection body 4, and a pair of nozzle | cap | die 5,5. explain. First, as shown in FIG. 5A, the light source container 2 and the reflection plate 3 are overlapped. Specifically, the light source container 2 and the reflector 3 are overlapped so as to accommodate the reflector recess 3a inside the container recess 2a.

  At this time, the light source L protrudes into the reflector recess 3a from the opening 3g formed in the reflection bottom 3d. In this embodiment, it is demarcated by facing surfaces 3j, 3j of a pair of opposing partition walls 3b and inner surfaces of the reflecting plate recess 3a (a pair of reflecting inner wall surfaces 3f, 3f and one surface of the reflecting bottom 3d). At least one light source L protrudes into the space. Moreover, it will be in the state with which the container flange part 2b and the reflecting plate flange part 3c overlapped. In the present embodiment, the region 3i on the side of the reflector flange portion 3c away from the reflector concave portion 3a is in contact with and overlapped with the container flange portion 2b. Further, the reflection bottom 3d is in contact with the light source module L1.

  Next, as shown in FIG. 5B, the light source container 2 and the reflection plate 3 are connected by a connecting body 4. Specifically, the light source container 2 and the reflection plate 3 are accommodated inside the coupling body 4 so that the longitudinal direction of the light source container 2 and the reflection plate 3 is along the longitudinal direction of the coupling body 4. At this time, the overlapping container flange 2b and the reflector flange 3c (specifically, the region 3i on the side away from the reflector recess 3a) are inserted into the flange insert 4c. Thereby, the light source container 2 and the reflecting plate 3 are connected by the connecting body 4. In such a state, a part of the reflector flange portion 3c (specifically, the convex region 3h on the reflector recess 3a side) contacts the flange insert portion 4c from the outside of the flange insert portion 4c. Thus, the reflector 3 is positioned with respect to the light source container 2. In such a state, a space is formed between the container recess 2a and the connecting body bottom 4a. By forming such a space, heat from the light source module L1 is dissipated into the space via the light source container 2, and thus the temperature in the lighting device is prevented from rising locally. can do.

  In addition, in this embodiment, since the length of the light source container 2 and the reflecting plate 3 is shorter than the length of the coupling body 4, the plurality of light source containers 2 and the plurality of reflecting plates 3 are provided. They can be linearly arranged in the longitudinal direction, accommodated in the connector 4 and connected. In this way, by connecting and integrating the plurality of light source containers 2 and the plurality of reflectors 3, as described later, the plurality of light source containers 2 and the plurality of light source containers 2 are arranged inside the cylindrical body 1. Since the reflective plate 3 can be accommodated at once, the workability in manufacturing the lighting device can be improved.

  Next, as shown in FIG. 6A, the light source container 2 and the reflection plate 3 connected by the connecting body 4 are stored in the cylindrical body 1 along the axis of the cylindrical body 1. At this time, the cylindrical body protrusions 1b and 1b are inserted into the protrusion insertion parts 4d and 4d. Thereby, the light source container 2 and the reflector 3 are connected to the cylindrical body 1 by the connecting body 4.

  Finally, as shown in FIG. 6 (b), the caps 5, 5 are attached to both ends of the cylindrical body 1 that houses the light source container 2, the reflector 3, and the coupling body 4. Thereby, the rod-shaped illuminating device 10 which becomes long along the axis line of the cylindrical body 1 is formed.

  As described above, according to the illuminating device according to the present invention, the illuminating device using the LED as a light source can be more compact and easily manufactured.

  That is, the illuminating device 10 can handle the light source container 2 and the reflection plate 3 as one body by connecting the light source container 2 and the reflection plate 3 by the connection body 4. For this reason, the light source container 2 and the reflector 3 can be accommodated in the cylindrical body 1 more efficiently than the case where the light source container 2 and the reflector 3 are separately accommodated inside the cylindrical body 1. The lighting device 10 can be easily formed. Moreover, since it becomes the rod-shaped illuminating device 10 along the axis line of the cylindrical body 1, it becomes a small-sized thing compared with the case where it forms in planar shape, and the space required for installation can be made small.

  Further, in the state where the reflecting plate recess 3a is housed inside the housing recess 2a, the light source protrudes inside the reflecting plate recess 3a so that the inner surface of the reflecting plate recess 3a is lighter than the inner surface of the housing recess 2a. Close to. For this reason, light stronger than giving light reflectivity to the inner surface of the container recess 2a is reflected. Since the inner wall surface of the reflecting plate recess 3a is formed so as to be inclined outward, light is efficiently reflected toward the opening direction of the reflecting plate recess 3a.

For this reason, brighter light is irradiated toward the opening direction of the reflecting plate recess 3a. Then, the light is diffused while being transmitted through the cylindrical body 1, so that the light is irradiated in a region other than the region corresponding to the light source. Further, a part of the light irradiated toward the opening direction of the reflecting plate recess 3a is reflected by the cylindrical body 1, travels again toward the reflecting plate 3, is reflected again by the reflecting plate 3 (multiple reflection), and diffuses. Is done. Thus, the illumination apparatus 10 which irradiates uniform light can be obtained by the diffusion of the light by the cylindrical body 1 and multiple reflection.
be able to.

  Further, the cylindrical body protruding portion 1b is inserted into the protruding portion insertion portion 4d, and the light source container 2 and the reflecting plate 3 are connected to the cylindrical body 1 via the connecting body 4, whereby the axis of the cylindrical body 1 is obtained. By rotating the illumination device 10 around the center, the light irradiation direction can be arbitrarily set.

  Further, by further including a plurality of partition wall portions 3b, more light is reflected by the inner surface of the reflector recess 3a and the opposing wall surfaces of the pair of partition wall portions 3b. For this reason, brighter light can be irradiated toward the opening direction of the reflector recessed part 3a. Thereby, it becomes an illuminating device which irradiates brighter light uniformly.

  Moreover, the rigidity of the direction orthogonal to the direction along the axis line of the cylindrical body 1 in the reflecting plate 3 can be improved by further providing the some partition wall part 3b. Thereby, the workability | operativity at the time of connecting with the light source container 2 by the connection body 4 can be improved.

  Further, the end 3k of the partition wall 3b positioned in the opening direction of the reflecting plate recess 3a is positioned closer to the reflecting bottom 3d than the end 3m positioned in the opening direction of the reflecting plate recess 3a. 3 can improve the rigidity in the direction along the axis of the cylindrical body 1. Thereby, the workability | operativity at the time of connecting with the light source container 2 by the connection body 4 can be improved.

  Further, the end 3k of the partition wall 3b has an action of converging light toward the opening direction of the reflector recess 3a, so that when the reflector 3 is accommodated in the cylinder 1, the cylindrical body When it is close to 1, it becomes difficult for light to reach between the end 3 k of the partition wall 3 b and the cylindrical body 1. For this reason, the light quantity of the area | region corresponding to the edge part 3k of the partition wall part 3b in the cylindrical body 1 falls, and a nonuniformity will arise in a light quantity. On the other hand, since the end portion 3k of the partition wall portion 3b is positioned on the reflection bottom portion 3d side, the interval between the end portion 3k of the partition wall portion 3b and the cylindrical body 1 is widened, and thus the partition wall portion The light easily reaches between the end portion 3k of 3 and the cylindrical body 1. Thereby, it becomes the illuminating device 10 which irradiates brighter light uniformly.

  Further, the reflecting plate flange portion 3c is formed so that the cross-sectional shape orthogonal to the axis of the cylindrical body 1 is convex, and thus the direction along the axis of the cylindrical body 1 in the reflecting plate flange portion 3c. The rigidity of can be improved.

  Moreover, since the reflecting plate 3 is formed by thermoforming the thermoplastic resin sheet, the reflecting plate 3 can be easily manufactured. Moreover, it is easier to produce a complicated shape than when the thermoplastic resin sheet is bent, and it is possible to prevent a decrease in reflectivity due to the crease formed by the bending process.

  In addition, the illuminating device which concerns on this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention. Further, the configurations and methods of the plurality of embodiments described above may be arbitrarily adopted and combined (even if the configurations and methods according to one embodiment are applied to the configurations and methods according to other embodiments). Of course, it is of course possible to arbitrarily select configurations, methods, and the like according to various modifications described below and employ them in the configurations, methods, and the like according to the above-described embodiments.

  For example, in the said embodiment, although the reflecting plate 3 is provided with the some partition wall part 3b, it is not limited to this, As shown to Fig.7 (a), it is in the longitudinal direction of the reflecting plate 3. A reflecting plate recess 3a 'may be formed along the plurality of openings 3g in the reflecting bottom 3d'. The reflection plate 3 having such a configuration can be formed by bending a plate-like material.

  Moreover, in the said embodiment, although the convex part is formed in the reflector flange part 3c, it is not limited to this, As shown in FIG.7 (b) and (c), a reflector flange part 3c ′ may be formed in a planar shape.

  Moreover, in the said embodiment, the edge part 3k of the partition wall part 3b located in the opening direction side of the reflecting plate recessed part 3a is located in the reflection bottom part 3d side rather than the edge part 3m located in the opening direction of the reflecting plate recessed part 3a. However, the present invention is not limited to this, and as shown in FIG. 7 (d), the end 3k of the partition wall 3b is substantially at the same position as the end 3m located in the opening direction of the reflector recess 3a. It may be configured to be located.

  Moreover, in the said embodiment, although the reflecting plate 3 is accommodated in the light source container 2 in the state contact | abutted to the light source module L1, it is not limited to this, As shown in FIG. The reflector 3 may be configured such that a space is formed between the reflector 3 and the light source module L <b> 1 in a state where the reflector 3 is connected to the light source container 2 by the connector 4. According to such a configuration, the heat emitted from the light source module is dissipated through the space between the reflector 3 and the light source module L1, so that the heat from the light source module L1 is directly transmitted to the reflector 3; It is prevented that the temperature rises locally. Thereby, malfunctions, such as an electrical resistance rise of the light source module L1, can be prevented.

  DESCRIPTION OF SYMBOLS 1 ... Cylindrical body, 1b ... Cylindrical body protrusion part, 2 ... Light source housing body, 2a ... Housing body recessed part, 2b ... Housing body flange part, 2c ... Housing body bottom part, 3 ... Reflecting plate, 3a ... Reflecting plate recessed part, 3b: Partition wall portion, 3c: Reflecting plate flange portion, 3d: Reflecting bottom portion, 3e: Reflecting wall portion, 3f: Reflecting inner wall surface, 4 ... Connected body, 4a ... Connected body bottom portion, 4b ... Connected body wall portion, 4c ... Flange insertion part, 4d ... projecting part insertion part, 5 ... base, 10 ... lighting device, L ... light source, L1 ... light source module

Claims (6)

A light source container in which a light source module having a light emitting diode as a light source is accommodated, a reflecting plate that reflects light from the light source, and a cylinder that is formed so that the axial direction is long and allows light from the light source to be diffused and transmitted And a connecting body that connects the light source container, the reflector, and the cylindrical body,
The light source container is formed so that a cross-sectional shape orthogonal to the axis of the cylindrical body is concave, and a container concave part for housing the light source module, and an end part positioned in the opening direction of the container concave part And a container flange portion extending outward from
The reflection plate is formed so that a cross-sectional shape orthogonal to the axis of the cylindrical body is concave, and includes an inner wall surface formed to incline outward from the bottom toward the opening direction. A reflecting plate recess, and a reflecting plate flange portion extending outward from an end located in the opening direction of the reflecting plate recess,
The light source container and the reflecting plate are projected in the reflecting plate recess from the opening formed in the bottom of the reflecting plate recess in a state where the reflecting plate recess is housed in the housing recess, and the housing flange portion And the reflector flange part are configured to overlap,
The coupling body includes a flange insertion portion for inserting the overlapping container flange portion and the reflector flange portion, and a protruding portion insertion portion for inserting the cylindrical body protruding portion protruding from the inner surface of the cylindrical body,
The overlapping container flange part and reflector flange part are inserted into the flange insertion part so that the light source container and reflector are connected by the connecting body, and the connected light source container and reflector are the axis of the cylindrical body. The cylindrical body protruding portion is inserted into the protruding portion insertion portion, and the light source container and the reflection plate are connected to the cylindrical body by a connecting body. Lighting device.   The reflecting plate includes a plurality of reflecting plate recesses along the axis of the cylindrical body, and a partition wall that partitions the spaces formed inside the reflecting plate recesses is formed between the reflecting plate recesses. The pair of partition walls facing each other so that the reflector concave portion is positioned between them are formed such that the distance between the opposing wall surfaces increases from the bottom of the reflector concave portion toward the opening direction of the reflector concave portion. 2. The illumination according to claim 1, wherein at least one light source protrudes into a space defined by the opposing surfaces of the pair of opposing partition walls and the inner surface of the reflecting plate recess. apparatus.   The end portion of the partition wall portion positioned in the opening direction of the reflecting plate recess is located closer to the bottom side of the reflecting plate recess than the end portion positioned in the opening direction of the reflecting plate recess. The lighting device described in 1.   The lighting device according to any one of claims 1 to 3, wherein the reflector flange portion is formed so that a cross-sectional shape perpendicular to the axis of the cylindrical body is convex.   The said reflecting plate is comprised so that space may be formed between light source modules in the state connected with the light source container by the connection body. The lighting device described in 1.   The lighting device according to any one of claims 1 to 5, wherein the reflecting plate is formed by thermoforming a thermoplastic resin sheet.

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