JP2015056319A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of reducing labor for attachment of the luminaire by simultaneously fixing an LED substrate when attaching a light guide part.SOLUTION: When a light guide part comprising a set of light guide plates 62 is inserted into a through-hole 52, a part of an engaging claw 64 is engaged with an engaging part 32 in a state in which the engaging claw 64 is positioned inside a recess 44. Thus, positioning of a body part 30, the light guide part 60 and an LED substrate 40 can be performed by the single operation of inserting the light guide part 60 into a cover part 50 until an engagement surface 66 and a front-side surface of an extension part 54 abut on each other.

Description

  The present invention relates to a lighting device.

  2. Description of the Related Art Conventionally, various types of lighting devices are known that reduce the assembly effort when assembling lighting devices using LEDs that have a larger number of parts than incandescent bulbs. For example, in Patent Document 1, a lid portion and a heat radiating portion of a storage portion are arranged on a drive circuit portion, and a positioning projection and a through-hole portion of a wiring are provided on the lid portion. And an illumination device that simplifies the connection between the light emitting element substrate and the light emitting element substrate. In this illuminating device, the wiring from the drive circuit unit is passed through the through-hole portion, thereby facilitating the wiring of the light-emitting element substrate including the LEDs, thereby simplifying the connection method between the drive circuit unit and the light-emitting element substrate.

JP 2011-233384 A

  By the way, in the illuminating device using LED, since the light irradiated from LED has high linearity, in order to irradiate light in a wide range, the light guide part which diffuses the light irradiated from LED is needed. For this reason, when assembling the illuminating device using LED, it is necessary to consider the effort which assembles a light guide part. However, in such an illuminating device, the attachment labor is not reduced at all with respect to the attachment of the light guide section, and the problem of facilitating the attachment of the light guide section remains.

  This invention is made in view of such a subject, and provides the illuminating device which can reduce the effort at the time of attaching an illuminating device by fixing an LED board simultaneously when attaching a light guide part. The main purpose.

  The present invention adopts the following means in order to achieve the main object described above.

The lighting device of the present invention is
A light guide unit having an engaging claw on one end side and diffusing light incident from the incident end surface;
A main body having an engaging portion that engages with the engaging claw;
An LED substrate on which at least a part of the side surface side has a recess recessed inside, and a plurality of LEDs are provided;
A cover portion that has a through-hole through which a part of the light guide portion passes, and covers a side surface side of the LED substrate and the main body portion;
With
When a part of the engaging claw is engaged with the engaging part in a state where a part of the light guide part is inserted into the through hole, a part of the engaging claw is located in the recess, and the main body The light guide part and the LED substrate are positioned relative to each other.

  The lighting device of the present invention has an engaging claw on one end side of the light guide part, and is provided on the engaging claw and the main body part when a part of the light guide part is inserted into the through hole of the cover part. The engaging portion engages. At this time, since a part of the engaging portion is located in the recess provided on the side surface of the LED substrate, the main body portion is formed by inserting the light guide portion into the through hole and engaging the engaging portion and the engaging claw. When positioning the light guide and the light guide, the light guide and the LED substrate are simultaneously positioned. During the series of operations for attaching the light guide, the main body, the light guide and the LED substrate are simultaneously positioned. can do. For this reason, compared with the case where each of a main-body part and a light guide part, a main-body part and a LED board, and a light guide part and a LED board are positioned separately, an installation effort can be reduced more.

  In the illumination device according to the aspect of the invention, the main body portion includes a rotation restricting member that restricts the light guide portion from rotating with respect to the main body portion in a state where the engaging claw is engaged with the engaging portion. May be a feature. In this case, since the rotation of the light guide unit is restricted in a state where the engaging claw is engaged with the engaging part, it is possible to reduce the labor for aligning the engaging claw and the engaging part.

In the illumination device adopting this aspect, the rotation restricting member is provided in the engaging portion, and has a slope on the side surface of the rotation restricting member, and becomes thinner as the distance from the rotation restricting member increases. When the light guide is rotated with respect to the main body, the engaging claw is inclined with the rotation of the light guide. It is good also as a feature to move along. If it carries out like this, an engagement nail | claw will move along an inclined surface by simple operation of rotating a light guide part, and a light guide part can be pushed into the back side of a main-body part. For this reason, the engaging claw is guided in the direction of the engaging portion, and labor when aligning the engaging claw and the engaging portion is reduced, and the engaging claw and the engaging portion are engaged. The labor at the time can be reduced.

  In the illuminating device of the present invention, the main body portion has a main body portion fixing claw urged outward on a side surface, and the cover portion has a concave main body portion fixing concave portion on an inner surface, and the main body portion. The main body part and the cover part may be fixed by a part of the fixing claw entering the main body part fixing recess. In this way, the possibility that the cover part is detached from the main body part can be reduced in advance.

  In the lighting device of the present invention, the inner side surface of the through hole may be formed in a shape that abuts on the outer side surface of the light guide unit. In this way, since the outer surface of the light guide is fixed on the inner surface of the through hole by inserting the light guide into the through hole, the light guide is inserted by inserting the light guide into the through hole. The light part can be easily fixed to the cover part.

  In the lighting device of the present invention, the light guide unit is formed by combining two light guide plates in a substantially cross shape, and the plurality of LEDs are arranged on one end side of the light guide unit on the LED substrate. It may be arranged in a substantially cross shape at a position facing the surface. By so doing, the LEDs are positioned on the respective end face sides of the light guide plates arranged in a substantially cross shape, so that the light emitted from the LEDs can be introduced into the light guide section.

  In the illumination device of the present invention that adopts this aspect, the engaging claw has a part of both side surfaces of the light guide plate extending to one end side, and the plurality of LEDs and the recesses are linear. It may be characterized by being arranged in a line-up position. By doing so, the distance between the engaging claw and the engaging claw is increased compared to the case where the engaging claw has a part of the main surface of the light guide plate extending to one end side. Stability at the time of fixing a part becomes higher.

FIG. 1 is an exploded perspective view showing an outline of the configuration of the illumination device 20. FIG. 2 is a perspective view showing an outline of the configuration of the main body 30. FIG. 3 is a perspective view showing an outline of the configuration of the cover unit 50. FIG. 4 is a front view of the LED substrate 40. FIG. 5 is a cross-sectional view for explaining how to attach the cover unit 50 and the light guide unit 60. FIG. 6 is a perspective view for explaining how to attach the main body 30 and the light guide 60. FIG. 7 is a perspective view for explaining a state in which the main body 30 and the light guide 60 are in contact with each other. FIG. 8 is a perspective view for explaining a state in which the light guide unit 60 is fixed to the main body unit 30. FIG. 9 is a partially enlarged perspective view for explaining variations of the diffusing dots 68.

  Next, the lighting device 20 as an example of the embodiment of the present invention will be described in detail based on the above-described drawings. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and do not depart from the gist of the present invention. It can be changed as appropriate. Note that the same or similar reference numerals are given to corresponding components in each figure, and for convenience of explanation, the diffusing dots 68 are omitted in FIGS. 5 to 8, and the diffusing dots 68 are actually shown in FIG. It is larger and is shown in a small number. Moreover, although the light guide part 60 side (arrow direction side in FIG. 1) of the illuminating device 20 is described as “front side” and the base 31 side (side opposite to the arrow in FIG. 1) is described as “rear side”, However, the absolute positional relationship is not limited.

  As shown in FIG. 1, a lighting device 20 which is an example of an embodiment of the present invention is configured by combining a main body 30 in which a power supply board and the like (not shown) are housed and a pair of light guide plates 62 in a cross shape. The LED board 40 provided with the light guide part 60, several LED42 (refer FIG. 4), and the cover part 50 which has the through-hole 52 in which the light guide part 60 can be inserted are provided. In the lighting device 20, the lighting device 20 can be easily assembled by fixing the light guide unit 60 and the cover unit 50 to the main body unit 30 in a state where the LED substrate 40 is disposed at a predetermined position of the main body unit 30. it can.

  As shown in FIG. 2, the main body 30 has an outer shape close to a substantially cylindrical shape as a whole, and the front side surface has a storage recess 33 that is recessed rearward, and the rear side has a spiral groove on the side surface. A base 31 is provided. The storage recess 33 stores a conductive wire or the like for electrically connecting the LED substrate 40 and the base 31. The storage recess 33 stores the conductive wire or the like so that the LED substrate 40 can be mounted when the lighting device 20 is assembled. The length of the conducting wire or the like can be sufficiently ensured so that disconnection or the like does not occur even when rotated. In other words, the possibility that the electrical connection between the LED substrate 40 and the base 31 is impaired when the lighting device 20 is assembled can be reduced. Further, an engagement portion 32 is provided on the front side surface of the main body portion 30, and a main body portion fixing claw 38 is provided between the base 31 and the engagement portion 32 and on the side surface side. The main body 30 screws the base 31 provided on the rear side into an LED bulb mounting portion (not shown) (for example, a mounting portion to which the E26 port defined by the JIS standard can be mounted) to power the lighting device 20. Can be supplied.

  The engaging portion 32 is a concave portion that is located on the front side of the side surface of the main body portion 30 and in which the front side and the side surface side of the main body portion 30 are opened. When the LED substrate 40 is disposed on the front side of the engaging portion 32, one surface of the LED substrate 40 is positioned on the front side of the engaging portion 32 (see FIG. 1). In addition, the engagement portion 32 is provided with four rotation restriction members 34 at substantially equal intervals from the rear side toward the front side, and along the engagement portion 32 on the front side of the rotation restriction member 34, respectively. A guiding portion 36 is provided. An inclined surface 36a is formed on the rear side of the guide portion 36, and the guide portion 36 is formed so as to become thinner as the distance from the rotation restricting member 34 increases (see FIG. 6). For this reason, even if the light guide 60 is rotated in a state where an engagement claw 64a and an engagement claw 64b (hereinafter also referred to as “engagement claw 64”) to be described later are inserted into the engagement portion 32, a predetermined amount is obtained. Rotation is restricted by position. Further, when the light guide unit 60 is rotated with the engagement claw 64 engaged with the engagement part 32, the engagement claw 64 moves to the rear side along with the rotation of the light guide unit 60 along the inclined surface 36a. The light guide 60 and the main body 30 are close to each other. By doing so, the light guide 60 can be pushed into the rear side of the main body 30 by rotating the light guide 60.

  The main body portion fixing claw 38 is a convex member that protrudes outward from the main body portion 30, and is biased in a direction away from the main body portion 30. A part of the main body portion fixing claw 38 enters a main body portion fixing recess 56 provided in the cover portion 50 when a cover portion 50 and a main body portion 30 described later are fixed. Once the main body fixing claw 38 enters the main body fixing recess 56, the main body fixing claw 38 is biased in a direction away from the main body 30, so even if the main body 30 is about to rotate counterclockwise The main body fixing claw 38 is caught and restricts the rotation of the main body 30. By doing so, the possibility that the main body 30 and the cover 50 are separated can be reduced in advance.

  As shown in FIG. 4, the LED substrate 40 is a plate-like member having concave portions 44 that are recessed in the center direction on the four side surfaces, and is disposed on the front side of the main body 30 (see FIG. 1). When the part 50 and the main body part 30 are fixed, they are sandwiched between the cover part 50 and the main body part 30. As shown in FIG. 4, the LED substrate 40 is provided with a plurality of LEDs 42 in a cross shape orthogonal to each other on the surface, and a recess 44 is provided on a side surface in the vicinity of the LEDs 42. In other words, a plurality of LEDs 42 are linearly provided between the recesses 44 provided at positions facing each other. The LED 42 provided on the surface of the LED substrate 40 is a light emitting diode that emits white light, and is electrically connected to the base 31 via the LED substrate 40 and a lead wire (not shown). For this reason, when the base 31 is screwed into an LED bulb mounting portion (not shown), power is supplied to the LED 42 and the LED 42 emits light. Further, since a space is provided between the LED substrate 40 and an incident end face 61 (see FIG. 1), which will be described later, provided on the light guide unit 60, an impact or the like is applied to the light guide unit 60 from the outside. Even if it is a case, possibility that this impact etc. will damage LED42 via the light guide part 60 can be reduced beforehand.

  As shown in FIG. 3, the cover portion 50 is a cylindrical member having a through hole 52 on the front surface and an open rear surface, and protrudes inward on the inner side surface on the front side. A main body fixing recess 56 (see FIG. 1) is provided on the inner side surface on the rear side. The through-hole 52 has an inner peripheral surface that has substantially the same shape as the outer periphery of the light guide portion 60, and the light guide portion until an engagement surface 66 described later and a front surface of the extension portion 54 come into contact with each other. By inserting 60 into the through hole 52, the light guide 60 is positioned in a state in which the light guide 60 cannot rotate clockwise or counterclockwise. In this state, when the main body 30 is inserted into the cover 50 from the rear side, the main body fixing claw 38 is inserted into the main body fixing recess 56, and the main body 30 and the cover 50 are fixed. Thus, the main body 30 and the light guide 60 can be easily fixed by a simple operation of inserting the light guide 60 and the main body 30 into the cover 50. At this time, when the LED 42 generates heat by use due to the contact between the main body 30 and the cover 50, the heat of the LED 42 is transferred to the cover 50 via the LED board 40 and the main body 30. Heat can be released from the cover portion 50 to the outside. By doing so, it is possible to reduce the possibility that the LED 42 will malfunction due to heat. The cover unit 50 may be a metal member. By so doing, the heat generated in the LED 42 can be radiated to the outside more efficiently, so that the heat generated in the LED 42 is more easily released to the outside, and the possibility that the heat causes a problem in the LED 42 is further reduced. Can do.

  As shown in FIG. 1, the light guide unit 60 includes a pair of a light guide plate 62 a and a light guide plate 62 b (hereinafter, also referred to as “light guide plate 62”) combined in a substantially cross shape. The rear end of the projection protrudes rearward to form an engagement claw 64 a and an engagement claw 64 b (hereinafter also referred to as “engagement claw 64”). The light guide 60 is fixed to the main body 30 in a state where the LED board 40 is disposed. The front portion of the engaging claw 64 is slightly narrower than the light guide plate 62. Due to the difference in width, both the engaging surface 66a and the engaging surface 66b (hereinafter referred to as the “engaging surface 66”). Say.) Is formed.

  The light guide plate 62 is a methacrylic resin plate-like member formed in a desired shape, and a plurality of diffusion dots 68 are provided on both main surfaces. In this light guide plate 62, the light emitted from the LEDs 42 arranged on the rear side of the light guide plate 62 is diffused by the plurality of diffusion dots 68 provided on the main surfaces on both sides, and the light is emitted mainly in the main surface direction. The

  The diffusing dots 68 are concave portions (see FIG. 9A) that are recessed in a quadrangular pyramid shape and are provided on both main surfaces of the light guide plate 62. The length of each side of the diffusing dots 68 is about 0.6 mm, and the depth is about 0.4 mm, and the pitch between adjacent quadrangular pyramid-shaped diffusion dots 68 is 2.0 mm. The diffusion dots 68 are provided on the main surface side at a position corresponding to the bottom surface of the quadrangular pyramid. Further, the diffusion dots 68 are provided so that the directions of the bottom surfaces of the quadrangular pyramids forming the diffusion dots 68 are the same (for example, the diagonal lines of the bottom surfaces of the quadrangular pyramids are parallel or orthogonal to the front-rear direction). By doing so, an orderly impression and a uniform feeling can be produced as compared with the case where the directions of the diffusing dots 68 are not the same.

  When forming the diffusion dots 68, an ultrasonic processing horn in which a plurality of processing dots having a shape obtained by inverting the diffusion dots 68 on the front end surface is arranged in a matrix form vertically and horizontally with respect to the light guide plate 62. By pressing, a quadrangular pyramid-shaped diffusion dot 68 reflecting the shape of the processed dot can be formed.

  Next, the assembly method of this illuminating device 20 is demonstrated in detail using FIGS. When assembling the lighting device 20, first, after fixing the light guide 60 and the cover 50, the main body 30 in which the LED substrate 40 is disposed at a predetermined position, the light guide 60, and the cover 50 are fixed. Thus, the lighting device 20 is assembled. For this reason, here, after first explaining the fixing method which fixes the light guide part 60 and the cover part 50 using FIG. 5, using FIG. 6-8, the light guide part 60, the cover part 50, and LED are demonstrated. A fixing method for fixing the substrate 40 to the main body 30 arranged at a predetermined position will be described. Here, FIG. 5 is an explanatory diagram for explaining a fixing method for fixing the light guide unit 60 and the cover unit 50, and FIG. 5A shows a state before the light guide unit 60 is fixed to the cover unit 50, FIG. 5B shows a state where the light guide unit 60 is fixed to the cover unit 50.

  When the light guide 60 and the cover 50 are fixed, the light guide 60 is inserted into the through hole 52 provided in the cover 50 as shown in FIG. 5A. Specifically, the light guide unit 60 is inserted into the cover unit 50 until the engagement surface 66 and the front surface of the extending unit 54 come into contact with each other (see FIG. 5B). At this time, since the through hole 52 has an inner periphery that is substantially the same shape as the outer periphery of the light guide unit 60, the light guide unit 60 can be easily positioned by inserting the light guide unit 60 into the through hole 52. It is possible to prevent the light guide unit 60 from rotating in the right direction or the left direction. In this way, the light guide 60 and the cover 50 can be fixed by a simple method of inserting the light guide 60 into the through hole 52 until the engagement surface 66 and the extension 54 come into contact with each other. .

  Next, a method for positioning the light guide 60 on the main body 30 will be described in detail with reference to FIG. Here, FIG. 6 is an explanatory diagram for explaining a method of positioning the light guide 60 on the main body 30. In FIG. 6, the cover portion 50 is omitted for the sake of explanation. When fixing the main body part 30 and the light guide part 60, as shown in FIG. 6, the LED board 40 is previously arranged at a predetermined position of the main body part 30, and the LED board 40 and a power supply board (not shown) are electrically connected. Connect. By doing so, the power supplied to the base 31 can be supplied to the LED 42 via the LED substrate 40. At this time, the LED substrate 40 is disposed at a position where the concave portion 44 and the guide portion 36 do not overlap when viewed along the outer periphery. In other words, when the LED substrate 40 arranged in the main body 30 is viewed from the side, the concave portions 44 and the guide portions 36 appear to be alternately positioned. Thus, when the light guide 60 and the main body 30 are fixed, the engagement claw 64 passes through the recess 44 and reaches the engagement portion 32 without being restricted by the guide portion 36. Can do. After the LED substrate 40 is disposed at a predetermined position of the main body 30, the light guide 60 and the light guide 60 are passed until the engagement claw 64 comes into contact with the engagement portion 32 through the recess 44 as indicated by an arrow in FIG. 6. The main body 30 is brought closer (see FIG. 7). At this time, the width of the engaging claw 64 and the width of the concave portion 44 are substantially the same, or the width of the concave portion 44 is made slightly wider. It is possible to restrict the substrate 40 from rotating clockwise or counterclockwise. In other words, by fixing the light guide 60 to the main body 30, the LED substrate 40 can also be fixed to the main body 30 at the same time. For this reason, it is not necessary to fix the LED board 40 to the main body 30 separately, and the labor for assembling the lighting device 20 can be reduced. At this time, the plurality of LEDs 42 and the recesses 44 provided on the LED substrate 40 are positioned in a straight line, and the engaging claws 64 are positioned at the left and right ends of the light guide plate 62. The light emitted from the LED 42 enters the light guide plate 62 from the incident end surface 61 of the light guide plate 62 and is diffused by the diffusion dots 68. Thus, the labor for matching the positions of the plurality of LEDs 42 and the position of the light guide unit 60 can be reduced. This effect is particularly significant when the light guide plates 62 combined in a cross shape like the light guide section 60 are used.

  Subsequently, a fixing method for fixing the light guide 60 to the main body 30 will be described in detail with reference to FIGS. 7 and 8. 7 and 8 are explanatory views for explaining a fixing method for fixing the light guide 60 to the main body 30, and FIG. 7 is a diagram before the light guide 60 and the main body 30 are fixed. FIG. 8 shows the state after the light guide 60 and the main body 30 are fixed. At this time, FIGS. 7A and 7B show the same state before the light guide 60 and the main body 30 are fixed, but FIG. 7A omits the cover 50, and FIG. Each is different in that the light guide 60 is omitted. 8 shows the same state after the light guide 60 and the main body 30 are fixed. FIG. 8A omits the cover 50, and FIG. 8B shows the light guide. The difference is that 60 is omitted.

  When fixing the light guide unit 60 to the main body unit 30, the light guide unit 60 in a state before fixing (see FIG. 7) is rotated to the right with respect to the main body unit 30, and after fixing (see FIG. 8). ). By doing so, the light guide 60 can be fixed to the main body 30 with a simple operation of rotating the light guide 60 in the right direction with respect to the main body 30. Specifically, the light guide 60 is rotated clockwise with respect to the main body 30 until the engaging claw 64 contacts the rotation restricting member 34. When the light guide unit 60 rotates to the right, the engagement claw 64 also rotates to the right at the same time, and is pressed by the engagement claw 64 to rotate the LED substrate 40. When the light guide part 60 is rotated, the front surface of the engaging claw 64 and the inclined surface 36a of the guide part 36 come into contact with each other (see FIG. 7). When the light guide 60 is further rotated to the right in this state, the inclined surface 36a is inclined in a direction approaching the base 31 as the rotation restricting member 34 is approached. 64 is pressed to the rear side, and the light guide part 60 is pushed to the rear side of the main body part 30. When the light guide 60 is further rotated rightward in this state, the engagement claw 64 and the rotation restricting member 34 come into contact with each other, and the rotation of the light guide 60 is restricted (see FIG. 8). When the light guide portion 60 is rotated until the engagement claw 64 and the rotation restricting member 34 are in contact with each other, the main body portion fixing claw 38 is inserted into the main body portion fixing recess 56 as shown in FIG. And the cover portion 50 are fixed to each other. At the same time, the surface on the rear side of the extending portion 54 presses the surface of the LED substrate 40 rearward, so that the LED substrate is formed by the surface on the front side of the main body 30 and the surface on the rear side of the extending portion 54. 40 is clamped. As described above, the light guide unit 60, the cover unit 50, the LED substrate 40, and the main body unit 30 are fixed by a simple operation of rotating the light guide unit 60 clockwise after the light guide unit 60 is inserted into the through hole 52. Therefore, the lighting device 20 can be easily assembled, and the assembly effort of the lighting device 20 can be reduced.

  According to the lighting device 20 of the present embodiment described in detail above, when the light guide 60 is inserted into the through-hole 52, a part of the engaging claw 64 is located with the engaging claw 64 positioned inside the recess 44. Is engaged with the engaging portion 32, so that the main body portion can be obtained by a single operation of inserting the light guide portion 60 into the cover portion 50 until the engaging surface 66 and the front surface of the extending portion 54 come into contact with each other. 30, the positions of the light guide 60 and the LED substrate 40 can be positioned. That is, the labor for assembling the lighting device 20 can be reduced.

  In addition, since the guide portion 36 having the inclined surface 36a inclined in the direction away from the front side is provided on the side surface on the front side of the engagement portion 32, a part of the engagement claw 64 is engaged with the engagement portion 32. When the light guide 60 is rotated to the right in the combined state, the engaging claw 64 moves along the inclined surface 36a, and the light guide 60 is moved to the rear of the main body 30 with the rotation of the light guide 60. Pushed into the side. By doing so, the light guide 60 can be pushed into the rear side of the main body 30 by a simple operation of rotating the light guide 60. That is, the labor for assembling the lighting device 20 can be reduced.

  Further, since the rotation restricting member 34 is provided in the engaging portion 32, when the light guide portion 60 is rotated with a part of the engaging claw 64 being inserted into the engaging portion 32, the engaging portion 32 is engaged. The pawl 64 is brought into contact with the rotation restricting member 34 to restrict the rotation of the light guide 60 at a predetermined position. For this reason, even if it rotates the light guide part 60, without considering the quantity which rotates the light guide part 60, the light guide part 60 can be rotated to a desired position. In other words, since it is not necessary to adjust the amount by which the light guide unit 60 is rotated, the labor when assembling the lighting device 20 can be reduced.

  Furthermore, the main body portion fixing claw 38 that is urged outward is provided on the outer side surface of the main body portion, and the main body portion fixing recess 56 is provided on the inner side surface of the cover portion 50. When the light guide part 60 is rotated with a part of the claw 64 inserted into the engaging part 32, the cover part 50 is also rotated along with the rotation of the light guide part 60, and a part of the main body part fixing claw 38 is part of the main body part. The cover 50 and the main body 30 are fixed by entering the fixing recess 56. That is, the labor for assembling the lighting device 20 can be reduced.

  Since the inner side surface of the through hole 52 is formed in contact with the outer side surface of the light guide unit 60, when the light guide unit 60 is fixed to the through hole 52, the surface of the light guide unit 60 and the through hole 52 The surfaces abut and are fixed to each other. That is, since the labor for fixing the light guide unit 60 to the cover unit 50 can be reduced, the labor for assembling the lighting device 20 can be reduced.

  The light guide 60 is formed by combining the light guide plate 62a and the light guide plate 62b in a cross shape, and the LED 42 is formed on the LED substrate 40 in a cross shape. It is located at a position facing the incident end face 61 of the light guide part 60, and the light emitted from the LED 42 is diffused by the light guide part 60. For this reason, it can prevent beforehand that the light irradiated from LED42 is irradiated directly, without passing through the light guide part 60. FIG.

  Still further, the engaging claw 64 has a part of both end surfaces of the light guide plate 62 extending, and the LED 42 is provided at a position where the concave portion 44 and the LED 42 are arranged in a straight line. If the LED 42 is positioned at a position where it can be inserted into the recess 44, the LED 42 is positioned at a position facing the incident end face 61, so that it is not necessary to match the position of the incident end face 61 with the position of the LED 42. For this reason, it is possible to prevent the light irradiated from the LED 42 from being directly irradiated without passing through the light guide unit 60 and to reduce the labor when assembling the lighting device 20.

  It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  For example, in the above-described embodiment, the light guide plate 62 is made of methacrylic resin. However, the light guide plate 62 is not particularly limited as long as it is a transparent resin through which light can pass. For example, methyl methacrylate or ethyl In addition to methacrylic resins such as methacrylate, acrylic resins such as methyl acrylate and ethyl acrylate, resins such as polycarbonate and polyethylene can be used. Further, a fine particle diffusing agent capable of diffusing visible light may be added. In either case, the same effects as those of the above-described embodiment can be obtained.

  In the above-described embodiment, the plurality of diffusion dots 68 are provided on both main surfaces of the light guide plate 62. However, the diffusion dots 68 may or may not be provided only on one main surface. Even in such a case, for example, the same effect as that of the above-described embodiment can be obtained by mixing a diffusing agent in the light guide plate 62 or providing a laser processing mark or the like on the main surface.

  In the above-described embodiment, the diffusion dots 68 are quadrangular pyramid-shaped recesses, each side of the diffusion dots 68 has a length of about 0.6 mm, a depth of about 0.4 mm, and adjacent quadrangular pyramids. However, the present invention is not limited to this, and a suitable size can be selected as appropriate. The length of each side of the quadrangular pyramid-shaped diffusion dot 68 may be selected from 0.2 mm to 1.5 mm, for example. Further, the depth of the quadrangular pyramid-shaped diffusion dots 68 may be selected from 0.4 mm to 0.8 mm, for example. Furthermore, the pitch between adjacent quadrangular pyramid-shaped diffusion dots 68 may be appropriately selected from a pitch of 1.5 mm to 8.0 mm, or may be 1.5 mm to 3.0 mm. . In any case, the same effect as that of the above-described embodiment can be obtained.

  In the above-described embodiment, the diffusion dots 68 are quadrangular pyramid-shaped recesses, but the shape and size of the diffusion recesses formed as the diffusion dots 68 are not particularly limited. A diffusion dot 68 composed of diffusion recesses of various shapes and sizes can be used as appropriate. For example, FIG. 9B shows a diffusion dot 68 composed of a diffusion recess on the conical side. FIG. 9C shows a diffusing dot 68 composed of a quadrangular prism-shaped diffusing recess. FIG. 9D shows a diffusing dot 68 made of a quadrangular pyramid-shaped diffusing recess. FIG. 9E shows a diffusing dot 68 consisting of a hemispherical diffusing recess. In addition, as a manufacturing method, various processing methods such as ultrasonic processing, heating processing, laser processing, and cutting processing may be employed, or a method such as injection molding is used using a mold in which irregularities are engraved in advance. Also good. Further, for example, as shown in FIG. 9F, a convex bulging diffusion convex portion may be used. The diffusion convex portion is formed on the main surface so as to rise (clean) by clean printing, silk printing, or the like. The size of each diffusion dot 68 may be the same or different. For example, each side of the quadrangular pyramid-shaped diffusion dots 68 may be gradually lengthened from the rear side to the upper side, or the depth of the quadrangular pyramid-shaped diffusion dots 68 may be gradually increased. By doing so, the amount of light diffused becomes smaller at a position where the light is close to the LED 42 and the light is strong, and the amount of light diffused becomes larger as the distance from the LED 42 is increased.

  In the embodiment described above, the LED 42 is a flat light emitting white light emitting diode, but is not limited to the flat light emitting type, and may be any type such as a side light emitting type or a shell type. The light color of the LED 42 is not limited to white, and may be any color of red, orange, yellow, green, blue, indigo or purple, or a combination of these colors, for example. . In any case, the same effect as the above-described embodiment can be obtained.

  In the embodiment described above, the guide portion 36 is provided, but the guide portion 36 may not be provided. Even in this case, the same effect as that of the above-described embodiment can be obtained by positioning the engaging claw 64 at an appropriate position of the engaging portion 32.

  In the embodiment described above, the rotation restricting member 34 is provided, but the rotation restricting member 34 may not be provided. Even in this case, the same effect as that of the above-described embodiment can be obtained by rotating the light guide 60 to an appropriate position with respect to the main body 30.

  In the embodiment described above, the light guide plate 62a and the light guide plate 62b are combined in a cross shape. However, the number of light guide plates to be combined is not limited to two, and may be three or more. It is not limited to a cross shape, and may be combined in any shape. Further, the shapes of the plurality of light guide plates to be combined may be the same or different. In any case, the same effect as that of the above-described embodiment can be obtained by arranging the LED 42 at a position facing the incident end face 61.

  As shown in the above-described embodiment, it can be used as an LED bulb, particularly in the lighting field.

DESCRIPTION OF SYMBOLS 20 ... Illuminating device, 30 ... Main-body part, 31 ... Base, 32 ... Engagement part, 33 ... Storage recessed part,
34 ... Rotation restricting member, 36 ... Guide part, 36a ... Inclined surface, 38 ... Main body part fixing claw,
40 ... LED substrate, 42 ... LED, 44 ... recess, 50 ... cover part,
52 ... Through-hole, 54 ... Extension part, 56 ... Main-body part fixed recessed part, 60 ... Light guide part,
61 ... Incident end face, 62 ... Light guide plate, 64 ... Engagement claw, 66 ... Engagement surface, 68 ... Diffusion dot.

Claims (7)

A light guide unit having an engaging claw on one end side and diffusing light incident from the incident end surface;
A main body having an engaging portion that engages with the engaging claw;
An LED substrate on which at least a part of the side surface side has a recess recessed inside, and a plurality of LEDs are provided;
A cover portion that has a through-hole through which a part of the light guide portion passes, and covers a side surface side of the LED substrate and the main body portion;
With
When a part of the engaging claw is engaged with the engaging part in a state where a part of the light guide part is inserted into the through hole, a part of the engaging claw is located in the recess, and the main body Part, the light guide part and the LED substrate are positioned relative to each other,
Lighting device. The main body has a rotation restricting member that restricts the light guide from rotating with respect to the main body in a state where the engaging claw is engaged with the engaging.
The lighting device according to claim 1. The rotation restricting member is provided in the engaging portion,
On the side surface of the rotation restricting member, there is provided a guide portion that has an inclined surface and protrudes along the engagement portion so as to become thinner as the distance from the rotation restricting member increases.
When the light guide is rotated with respect to the main body, the engagement claw moves along the inclined surface with the rotation of the light guide.
The lighting device according to claim 2. The main body portion has a main body portion fixing claw urged outwardly on a side surface,
The cover part has a concave body part fixing recess on the inner surface,
The main body part and the cover part are fixed by a part of the main body part fixing claw entering the main body part fixing recess,
The lighting device according to claim 1 or 2. The inner side surface of the through hole is formed in a shape that comes into contact with the outer side surface of the light guide unit,
The illuminating device of any one of Claims 1-4. The light guide part is formed by combining two light guide plates in a substantially cross shape,
The plurality of LEDs are arranged in a substantially cross shape at a position facing a surface on one end side of the light guide portion on the LED substrate.
The illuminating device of any one of Claims 1-5. The engaging claw has a part of both side surfaces of the light guide plate extending to one end side,
The plurality of LEDs and the recesses are arranged at positions arranged in a straight line,
The lighting device according to claim 6.

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