Light emitting tool

Abstract

To provide a light emitting tool in which a sheet material is installed inside a light emitting part, and in which replacement of the sheet material installed inside the light emitting part is easy.SOLUTION: A light emitting tool includes: a grip part 3 in which a light emitting body is provided inside; and a light emitting part 5 which is formed into a bottomed cylindrical shape, which is installed inside the grip part 3, and in which a sheet material installing part 17 where a sheet material 15 is installed is provided, inside a longer direction intermediate part 9 in a cylindrical part 7. The sheet material installing part 17 includes an inner wall surface 21 whose shape is a columnar solid side surface. The sheet material 15 installed at the sheet material installing part 17 comes into contact with the inner wall surface 21. When viewed in the longer direction of the light emitting part 5, the inner wall surface 21 of the intermediate part 9 and the inner wall surface of at least one end part out of both end parts 11, 13 in the longer direction of the cylindrical part are overlapped with each other.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a light emitting device, and more particularly to a light emitting device provided with a sheet material. [Background technology]

[0002] Conventionally, there is known a penlight in which a cover decorative sheet (sheet material) is installed inside a cylindrical cover (light-emitting part) with a bottom (see Patent Document 1). By installing the cover decorative sheet, when the penlight is illuminated, light passes through the cover decorative sheet and comes out to the outside of the cover. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6204625 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional penlights have a problem in that it is difficult to replace the cover decorative sheet installed inside the cover. Specifically, referring to Figure 3 of Japanese Patent No. 6204625, the diameter of the cover is small at the bottom end. This makes it difficult to remove the cover decorative sheet from the cover once it is installed inside.

[0005] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a light-emitting device in which a sheet material is installed inside the light-emitting part, and in which the sheet material installed inside the light-emitting part can be easily replaced. [Means for solving the problem]

[0006] A light-emitting device according to an aspect of the present invention includes a gripping portion in which a light-emitting body is provided, and a cylindrical portion formed in a bottomed cylindrical shape and installed on the gripping portion, and a sheet material installation portion in which a cylindrical sheet material is installed inside an intermediate portion of the cylindrical portion excluding both longitudinal ends, and light emitted by the light-emitting body is irradiated into the interior of the cylindrical portion, and the light irradiated into the interior has the light-emitting portion which transmits through the sheet material and the cylindrical portion, and the sheet material installation portion is configured with an inner wall surface shaped like a side surface of a columnar solid, and the cylindrical sheet material installed on the sheet material installation portion is irradiated on the inner wall surface. The light-emitting device is configured so that the inner wall surface of the intermediate portion and the inner wall surface of at least one of the two longitudinal end portions of the tubular portion overlap each other when viewed in the longitudinal direction of the light-emitting portion, or the inner wall surface of the intermediate portion is present inside the inner wall surface of at least one of the two longitudinal end portions of the tubular portion when viewed in the longitudinal direction of the light-emitting portion, or a tapered portion is provided on at least one of the two longitudinal end portions of the light-emitting portion, and the inner diameter of this tapered portion gradually decreases as it moves away from the intermediate portion.

[0007] In addition, in the light-emitting device according to this aspect of the present invention, a first sheet material and a second sheet material are provided as the sheet material, the first sheet material is adapted to diffuse the light emitted by the light-emitting body, the second sheet material has a pattern printed on it, and the first sheet material and the second sheet material overlap each other and are installed on the sheet material installation section with the first sheet material positioned on the inside and the second sheet material positioned on the outside.

[0008] In the light-emitting device according to the aspect of the invention, an intermediate space, which is the space inside an intermediate portion of the cylindrical portion of the light-emitting portion, is formed in a cylindrical shape, and a grip portion-side space, which is the space inside a grip portion-side end portion, which is the end portion on the grip portion side of both longitudinal ends of the cylindrical portion of the light-emitting portion, is also formed in a cylindrical shape, the value of the diameter of the grip portion-side space is smaller than the value of the diameter of the intermediate space, the central axis of the intermediate space and the central axis of the grip portion-side space coincide with each other, a first annular step surface is formed at the boundary between the intermediate space and the grip portion-side space, and A female thread is formed on the inner circumference of the tip end, which is the end opposite the gripping portion, and the inner diameter of the female thread is equal to or larger than the diameter of the intermediate space.The male thread of the lid portion is screwed onto the female thread of the tip end, so that the lid portion is installed on the tubular portion and the opening of the tubular portion opposite the gripping portion is closed.A second annular step surface is formed at the end of the lid portion on the intermediate portion side, and when the sheet material is installed on the sheet material installation section, the sheet material abuts against the first step surface and the second step surface.

[0009] In a light-emitting device according to an aspect of the invention, an intermediate space, which is the space inside an intermediate portion of the tubular portion of the light-emitting portion, is formed in a cylindrical shape, and a gripping portion-side space, which is the space inside a gripping portion-side end portion, which is the end portion on the gripping portion side of both longitudinal ends of the tubular portion of the light-emitting portion, is also formed in a cylindrical shape, the value of the diameter of the gripping portion-side space is smaller than the value of the diameter of the intermediate space, the central axis of the intermediate space and the central axis of the gripping portion-side space coincide with each other, a first annular step surface is formed at the boundary between the intermediate space and the gripping portion-side space, and a locking portion is provided on the inner periphery of the tip-side end portion, which is the end opposite the gripping portion, of both longitudinal ends of the tubular portion of the light-emitting portion, and the value of the inner diameter of the locking portion is equal to the value of the diameter of the intermediate space. or is larger than the diameter of the intermediate space, and the engaging portion of the lid portion is engaged with the engaging portion at the tip end, so that the lid portion is installed on the tubular portion, the opening on the opposite side of the gripping portion of the tubular portion is closed, a second annular step surface is formed at the end of the lid portion on the intermediate portion side, and when the sheet material is installed on the sheet material installation portion, the sheet material is configured to abut against the first step surface and the second step surface, and the engaging portion of the lid portion is configured to be elastic, so that the engaging portion elastically deforms while the lid portion is being installed on the tubular portion, and returns to its original shape when the lid portion has been installed on the tubular portion, so that the lid portion is engaged on the tubular portion.

[0010] Furthermore, a light-emitting device according to an aspect of the present invention is a light-emitting device that is formed in a cylindrical shape with a bottom, comprising a gripping portion in which a light-emitting body is provided, a cylindrical portion, and a lid portion that covers one opening of the cylindrical portion, and is provided with a sheet material installation portion inside on which a cylindrical sheet material is installed that is installed on the gripping portion at the other opening of the cylindrical portion, and light emitted by the light-emitting body is irradiated inside, and the light irradiated inside is transmitted through the sheet material and the flesh portion, and a male screw is provided on the outer periphery of the end of the cylindrical portion on the other opening side.

[0011] Furthermore, a light-emitting device according to an aspect of the present invention is a light-emitting device that includes a gripping portion in which a light-emitting body is provided, and a cylindrical portion formed in a bottomed tube shape and attached to the gripping portion, and a sheet material attachment portion in which a cylindrical sheet material is attached inside an intermediate portion of the cylindrical portion excluding both longitudinal ends, and light emitted by the light-emitting body is irradiated into the interior of the cylindrical portion, and the light irradiated into the interior comprises a light-emitting portion that transmits through the sheet material and the cylindrical portion, and the light-emitting portion is configured to be divided into a first light-emitting portion component and a second light-emitting portion component by a plane including the central axis of the cylindrical portion.

[0012] In addition, in the light-emitting device according to this aspect of the present invention, the sheet material is provided with a temporary locking portion and a temporary locked portion, and the temporary locked portion is locked to the temporary locking portion, thereby forming the sheet material into a cylindrical shape. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a light-emitting device in which a sheet material is installed inside the light-emitting section, and in which the sheet material installed inside the light-emitting section can be easily replaced. [Brief explanation of the drawings]

[0014] [Figure 1] 1A and 1B are diagrams showing a light-emitting device according to an embodiment of the present invention, (b) is a diagram showing an IB-IB cross section in (a), (c) is a diagram corresponding to (b) and showing a modified example of the installation mode of the sheet material, and (d) is an unfolded view of the sheet material. [Figure 2] 2 is a cross-sectional view of a cylindrical portion that constitutes the light-emitting part of the light-emitting implement shown in FIG. 1. FIG. [Figure 3] FIG. 10 is a cross-sectional view showing a light-emitting portion of a light-emitting device according to a first modified example. [Figure 4] FIG. 10 is a cross-sectional view showing a light-emitting portion of a light-emitting device according to a second modified example. [Figure 5] (b) is a cross-sectional view of the light-emitting part of the light-emitting device according to the third modified example, and (a) is a cross-sectional view of the light-emitting part shown in (b) with the ring-shaped wall part remaining. [Figure 6] (a) is an expanded view of the first sheet material, and (b) is a view corresponding to Figure 1(b)(c), showing the state in which the first sheet material and the second sheet material are placed on the sheet material placement section. [Figure 7] 10A and 10B are cross-sectional views of a light-emitting part of a light-emitting device according to a fourth modified example, in which (a) shows the state in which the light-emitting part is divided into a first light-emitting part component and a second light-emitting part component, and (b) shows the state in which the first light-emitting part component and the second light-emitting part component are integrated to form the light-emitting part. [Figure 8] 10 is a diagram showing a light-emitting device according to a fifth modified example, illustrating the behavior of the light-emitting part in the manner shown in FIG. 7 relative to the grip part. FIG. [Figure 9] FIG. 10 is a development view of a sheet material provided with a temporary locking portion and a temporary locked portion. [Figure 10] 4(a) is an enlarged view of the XA portion in FIG. 4(a), and (b), (c), and (d) are views corresponding to (a) and showing modified examples of the tapered portion shown in (a). [Figure 11] FIG. 10 is a cross-sectional view showing the manner in which the cylindrical portion and the lid portion of the light-emitting part of the light-emitting tool according to the sixth modified example are engaged with each other. [Figure 12] 10(a) is a cross-sectional view of a cover portion of a light emitting device according to a sixth modified example, and FIG. 10(b) is a view taken along the arrow XIIA in FIG. [Figure 13] FIG. 10(a) is a cross-sectional view of a cylindrical portion of a light emitting device according to a sixth modified example, and FIG. 10(b) is a view taken along the arrow XIIB in FIG. [Figure 14] 11(a) is an enlarged view of the XIVA portion in FIG. 11(a), and (b) and (c) are views corresponding to (a) and showing modified examples of the locking portion and the locked portion. [Figure 15] FIG. 10 is a cross-sectional view showing the manner in which the cylindrical portion and the lid portion of the light-emitting part of the light-emitting tool according to the seventh modified example are engaged with each other. [Figure 16] FIG. 10 is a cross-sectional view of a cylindrical portion of a light emitting device according to a seventh modified example. [Figure 17] FIG. 10(a) is a cross-sectional view of the cover of the light emitting device according to the seventh modified example, and FIG. 10(b) is a view taken along the arrow XVIIB in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] The light emitting device 1 according to an embodiment of the present invention is intended to be held in the hand of an audience member (user) as a light for a concert, for example, and is configured with a grip portion 3 and a light emitting portion 5, as shown in FIG.

[0016] The grip portion 3 is formed in a bottomed tubular shape (for example, a bottomed cylindrical shape). An illuminant (for example, a red LED, a blue LED, or a green LED) (not shown) is provided inside the grip portion 3. The illuminant is designed so that the light emission color and light emission pattern can be changed as appropriate.

[0017] The gripping part 3 is provided with a switch (not shown) for turning on / off the power supply of the light emitting device 1 and a switch (not shown) for changing the light emission pattern of the light emitter, etc. The gripping part 3 is made of, for example, an opaque synthetic resin, and is provided inside the gripping part 3 with a power supply for making the light emitter emit light and a control part (not shown).

[0018] The light emitting unit 5 is formed in a bottomed tubular shape that includes a tubular portion (for example, a cylindrical tubular portion) 7 and a lid portion 19, and is configured to be installed in the grip portion 3. Inside the middle portion 9, excluding both end portions 11, 13 in the longitudinal direction of the tubular portion 7 (the extension direction of the central axis of the tube of the tubular portion 7), there is provided a sheet material installation portion 17 on which a tubular (for example, cylindrical) sheet material (for example, decorative sheet material) 15 is installed.

[0019] The light emitted by the light-emitting body is irradiated inside the cylindrical portion 7, and the light irradiated inside passes through the sheet material 15 installed in the sheet material installation section 17 and the cylindrical portion 7 in that order, causing the light-emitting section 5 to emit light.

[0020] The lid 19 of the light-emitting unit 5 closes one of the openings at both ends of the cylindrical portion 7. The cylindrical portion 7 is made of, for example, a colorless, transparent synthetic resin. The cylindrical portion 7 may also be made of a colored, transparent synthetic resin or a translucent synthetic resin. The lid 19 is also made of a synthetic resin.

[0021] The light emitting unit 5 is set integrally to the gripping unit 3 by engaging the other end 13 (the end opposite the lid 19) of the cylindrical unit 7 with the end on the opening side of the gripping unit 3. When the light emitting unit 5 is set to the gripping unit 3, the opening of the light emitting unit 5 (the opening located on the opposite side from the lid 19) is connected to the opening of the gripping unit 3, and the external shape of the light emitting unit 5 and the gripping unit 3 (the external shape of the light emitting device 1) is a long, thin column (for example, a long, thin cylinder).

[0022] 1 and 2, and as already understood, the cylindrical portion 7 of the light-emitting unit 5 is configured to include both end portions 11, 13 and an intermediate portion 9. Of the both longitudinal end portions of the cylindrical portion 7, the end portion 11 on the lid portion 19 side (lid portion-side end portion) is connected to the intermediate portion 9, and the end portion 13 on the grip portion 3 side (opening side) of the both longitudinal end portions is connected to the intermediate portion 9. In other words, the cylindrical portion 7 is formed by arranging the lid portion-side end portion 11, the intermediate portion 9, and the grip portion-side end portion 13 in this order in the longitudinal direction of the cylindrical portion 7 of the light-emitting unit 5.

[0023] The sheet material placement section 17 (middle section 9) is configured to have an inner wall surface (inner wall surface of the middle section 9) 21 shaped like the side surface of a columnar solid (for example, a cylinder). The sheet material 15 placed in the sheet material placement section 17 in a cylindrical shape is adapted to abut against the inner wall surface 21.

[0024] A columnar solid is a solid formed by drawing a figure of a predetermined shape, such as a circle or a polygon such as a triangle or a rectangle, on a plane, and then moving the figure of the predetermined shape a predetermined distance in a direction perpendicular to the plane. The shape of the side surface of a columnar solid is a surface represented by the locus of the periphery of the figure of the predetermined shape when it is moved the predetermined distance in a direction perpendicular to the plane.

[0025] As shown in FIG. 1(b), for example, a single sheet of sheet material 15 is provided, and has the function of diffusing light emitted by the light-emitting body provided in gripping portion 3. Furthermore, as shown in FIG. 1(d), sheet material 15 has a pattern 23 made up of letters, figures, symbols, etc. written on it. Note that sheet material 15 does not have to have a pattern 23 written on it. Furthermore, sheet material 15 may be colored in a predetermined color (for example, one predetermined color). When sheet material 15 is placed on sheet material placement portion 17, pattern 23, etc. can be seen from outside light-emitting portion 5.

[0026] 1(d), sheet material 15 is flat and rectangular. Sheet material 15, which has become cylindrical when placed in sheet material placement section 17, is biased against inner wall surface 21 of sheet material placement section 17 by a restoring force that causes sheet material 15 to return to its original shape.

[0027] In order to make it easier to remove the sheet material 15 placed in the sheet material placing section 17 from the sheet material placing section 17, the light emitting section 5 (cylindrical section 7) has one of the following first to third shapes. Also, in order to make it easier to place the sheet material 15 on the sheet material placing section 17, the light emitting section 5 has one of the following first to third shapes.

[0028] In the first form shown in Figures 3 and 5(b), when viewed in the longitudinal direction of the light-emitting section 5 (viewed in the extension direction of the central axis of the tube of the tubular section 7), the entire inner wall surface 21 of the intermediate section 9 and the entire inner wall surface of at least one of the longitudinal end sections 11, 13 of the light-emitting section 5 overlap each other.

[0029] In other words, the inner wall surface of at least one of the longitudinal ends of the tubular portion 7 of the light-emitting portion 5 (end 13 opposite the lid portion 19) has a shape that is a direct extension of the inner wall surface 21 of the sheet material installation portion 17 (middle portion 9) in the longitudinal direction of the tubular portion 7 of the light-emitting portion 5.

[0030] In the second embodiment, when viewed in the longitudinal direction of the light-emitting unit 5, the inner wall surface 21 of the intermediate portion 9 is present inside the inner wall surface of at least one of both longitudinal end portions of the light-emitting unit 5. In this case, part of the outer periphery of the inner wall surface 21 of the intermediate portion 9 may overlap the outer periphery of the inner wall surface of at least one of both longitudinal end portions of the light-emitting unit 5.

[0031] 1 and 2, the inner diameter of the female thread 35 at the lid-side end 11 of the cylindrical portion 7 and the inner diameter of the inner wall surface 21 of the intermediate portion 9 are equal to each other, resulting in the first configuration described above. However, if the inner diameter of the female thread 35 at the lid-side end 11 of the cylindrical portion 7 is made slightly larger than the inner diameter of the inner wall surface 21 of the intermediate portion 9, the second configuration will be achieved.

[0032] 4 and 10(a), a tapered portion 25 is provided on at least one of the longitudinal ends of the light-emitting unit 5 (for example, the end on the gripping unit 3 side). Tapered portion 25 is provided to make it easier to move sheet material 15 placed on sheet material placement unit 17 in the longitudinal direction of the cylindrical portion 7 relative to the cylindrical portion 7 and remove it from the outside of the cylindrical portion 7. The inner diameter of tapered portion 25 gradually decreases with increasing distance from intermediate portion 9 to the gripping unit 3 side.

[0033] More specifically, the inner diameter of the end of tapered portion 25 that contacts intermediate portion 9 is equal to the inner diameter DA of intermediate portion 9. When viewed in the longitudinal direction of light-emitting portion 5, for example, the central axis of intermediate portion 9 and the central axis of tapered portion 25 coincide with each other, and tapered portion 25 is located inside intermediate portion 9.

[0034] The decrease in the value of the inner diameter (diameter) of the tapered portion 25 will be described with reference to Fig. 10(a). The value of the distance of the tapered portion 25 in the longitudinal direction of the light-emitting portion 5 (the extension direction of the central axis of the tapered portion 25) is defined as L. The value of the inner diameter of the end of the tapered portion 25 on the side of the intermediate portion 9 is defined as DA, and the value of the inner diameter of the end of the tapered portion 25 on the opposite side of the intermediate portion 9 (the side of the gripping portion 3) is defined as DB. Then, the value of "(DA-DB) / 2L" is, for example, equal to or less than "1". In other words, the value of "(DA-DB) / 2L" is a predetermined value between "0.01" and "1".

[0035] An example will be explained below where the value of "(DA-DB) / 2L" is "1." The inner diameter value DA of the middle section 9 is 30 mm. The length L of the tapered section is 5 mm. Then, the inner diameter value DB of the end opposite the middle section 9 is 20 mm (DB=DA-2L).

[0036] In the above explanation, the value of "(DA-DB) / 2L" (the rate of decrease in the inner diameter value of the tapered portion 25) is a constant value, but the value of "(DA-DB) / 2L" may be changed as appropriate.

[0037] That is, the rate of decrease may gradually increase with increasing distance from the boundary between the intermediate portion 9 and the tapered portion 25 (see FIG. 10(b)). The rate of decrease may gradually decrease with increasing distance from the boundary between the intermediate portion 9 and the tapered portion 25 (see FIG. 10(c)). Furthermore, as shown in FIG. 10(d), the rate of decrease may gradually increase with increasing distance from the boundary between the intermediate portion 9 and the tapered portion 25 up to the middle of the intermediate portion 9 (up to the center of the intermediate portion 9). After this, the rate of decrease may gradually decrease with increasing distance from the boundary between the intermediate portion 9 and the tapered portion 25.

[0038] In addition, in the configuration shown in Figure 1, only one sheet material 15 is provided, but as shown in Figure 6(b), a first sheet material 15A and a second sheet material 15B may be provided as the sheet material 15.

[0039] The first sheet material 15A (see FIG. 6(a)) is configured to diffuse light emitted by a light emitter provided in the grip portion 3. The second sheet material 15B (see FIG. 1(d)) has a pattern 23 printed thereon.

[0040] As shown in Figure 6(b), the first sheet material 15A and the second sheet material 15B overlap each other and are configured to be placed on the sheet material placement section 17 with the first sheet material 15A positioned on the inside and the second sheet material 15B positioned on the outside.

[0041] The area of ​​second sheet material 15B other than pattern 23 is transparent (colorless transparent, colored transparent) or translucent (colorless translucent, colored translucent). The area of ​​pattern 23 of second sheet material 15B is, for example, opaque or translucent (colorless translucent, colored translucent). When first sheet material 15A and second sheet material 15B are placed on sheet material placement section 17, second sheet material 15B is in contact with inner wall surface 21 of middle section 9 that constitutes tubular section 7 of light-emitting section 5.

[0042] The light emitting device 1 will be further described. As shown in Figures 1(a) and 1(b) and 2, an intermediate space 27, which is the space inside an intermediate portion 9 constituting the cylindrical portion 7 of the light emitting portion 5, is formed in a cylindrical shape (a long, thin cylindrical shape). A gripping portion side space 29, which is the space inside a gripping portion side end (base end end) 13, which is the end on the gripping portion 3 side of both longitudinal ends of the cylindrical portion 7 of the light emitting portion 5, is also formed in a cylindrical shape (a short cylindrical shape).

[0043] The diameter (cylinder diameter) of the gripping portion side space 29 is slightly smaller than the diameter (cylinder diameter) of the intermediate space 27. The central axis of the intermediate space 27 (a straight line passing through the center of the circular bottom surface of the cylinder and the center of the circular top surface, directly connecting them) and the central axis of the gripping portion side space 29 (a straight line passing through the center of the circular bottom surface of the cylinder and the center of the circular top surface, directly connecting them) are coincident with each other.

[0044] 1(a), a circular first step surface 31 is formed at the boundary between the intermediate space 27 and the grip-side space 29. The length of the intermediate space 27 is longer than the length of the grip-side space 29. A male thread 33 is formed on the outer periphery of the grip-side end 13, and the central axis of the intermediate space 27 and the central axis of the male thread 33 coincide with each other.

[0045] A female screw 35 is formed on the inner circumference of the tip end (lid end; grip opposite end) 11, which is the end opposite the grip 3 of both longitudinal ends of the cylindrical portion 7 of the light-emitting unit 5. The central axis of the intermediate space 27 and the central axis of the female screw 35 coincide with each other. The value of the inner diameter of the female screw 35 is equal to or slightly larger than the value of the diameter of the intermediate space 27.

[0046] The male thread 37 of the lid portion 19 is threadedly engaged with the female thread 35 of the tip end portion 11, so that the lid portion 19 is integrally installed on the tubular portion 7 (tip end portion 11). The opening on the opposite side of the tubular portion 7 from the grip portion 3 is closed, and a second annular stepped surface 39 is formed at the end of the lid portion 19 on the middle portion 9 side.

[0047] When the sheet material 15 is placed on the sheet material placement section 17, the sheet material 15 is configured to abut against the first step surface 31 and the second step surface 39. As already understood, the lid section 19 is detachable from the cylindrical section 7.

[0048] As shown in Fig. 9, the sheet material 15 may be provided with a temporary locking portion 41 and a temporary locked portion 43. The temporary locked portion 43 may be locked to the temporary locking portion 41, so that the sheet material 15 before being placed on the sheet material placing section 17 is formed into a tubular shape (for example, a cylindrical shape). Fig. 9(a) shows the sheet material 15 in an unfolded state. That is, the direction perpendicular to the plane of the paper in Fig. 9(a) is the thickness direction of the sheet material 15.

[0049] As shown in Figure 9(a), the temporary locking portion 43 is formed as a convex portion (an isosceles trapezoidal convex portion) protruding from one end of the sheet material 15 in the width direction (the direction perpendicular to the longitudinal direction) at the center of the longitudinal direction of the sheet material 15. The temporary locking portion 41 is formed as a slit provided in the center of the longitudinal direction of the sheet material 15 near the other end of the sheet material 15 in the width direction. The slit extends a short distance in the longitudinal direction of the sheet material 15 and penetrates the sheet material 15 in the thickness direction. Then, by inserting the temporary locking portion 41 into the temporary locking portion 43, the sheet material 15 becomes cylindrical.

[0050] As shown in Fig. 9(b), the temporary locking portion 43 may be formed by a pair of convex portions (T-shaped protrusions) protruding from one widthwise end of the sheet material 15 at both longitudinal ends of the sheet material 15. Alternatively, the temporary locking portion 41 may be formed by a pair of slits provided near the other widthwise end of the sheet material 15 at both longitudinal ends of the sheet material 15. Note that the width of the tip of the temporary locking portion 43 shown in Fig. 9(b) (the dimension in the longitudinal direction of the sheet material 15) is large so that it is difficult for the temporary locking portion 43 to come out when inserted into the temporary locking portion 41.

[0051] The shape of the temporary engagement portion 43 in Figure 9(a) may be the shape of the temporary engagement portion 43 shown in Figure 9(b), and the shape of the temporary engagement portion 43 in Figure 9(b) may be the shape of the temporary engagement portion 43 shown in Figure 9(a).

[0052] The sheet material 15 placed in the sheet material placement section 17 will be described with reference to FIG. 1(b). The sheet material 15 placed in the sheet material placement section 17 has both circumferential ends in contact with each other. As shown in FIG. 1(c), the sheet materials 15 placed in the sheet material placement section 17 may slightly overlap each other at both circumferential ends. Furthermore, even when a first sheet material 15A and a second sheet material 15B are used as the sheet material 15, as shown in FIG. 6, the sheet materials 15A and 15B are provided in the manner shown in FIG. 1(a) or the manner shown in FIG. 1(b). In FIG. 6, the sheet material 15A overlaps each other at both circumferential ends, and the sheet material 15B contacts each other at both circumferential ends.

[0053] Next, replacement of the sheet material 15 will be described. As shown in Fig. 1(a), with the sheet material 15 installed, the lid portion 19 is removed from the cylindrical portion 7. Next, the sheet material 15 is moved to the left side of Fig. 1(a) relative to the cylindrical portion 7, and the sheet material 15 is removed from the cylindrical portion 7.

[0054] Next, another sheet material 15 is formed into a cylindrical shape and inserted into the cylindrical portion 7, the sheet material 15 is placed in the sheet material placement portion 17, and the lid portion 19 is placed in the cylindrical portion 7. This completes the replacement of the sheet material 15.

[0055] In the light-emitting device 1 equipped with the light-emitting section 5 shown in Figures 3 and 5(b), the inner wall surface 21 of the intermediate section 9 and the inner wall surface of one end of the light-emitting section 5 in the longitudinal direction overlap each other when viewed in the longitudinal direction of the light-emitting section 5, so no step is formed on the inner wall surface of one end of the tubular section 7 in the longitudinal direction.

[0056] This makes it easy to remove the sheet material 15 placed inside the light-emitting unit 5 from the light-emitting unit 5 and to place the sheet material 15 inside the light-emitting unit 5 by removing the light-emitting unit 5 from the gripping unit 3. This also makes it easy to replace the sheet material 15 placed inside the light-emitting unit 5.

[0057] By changing the sheet material 15, it is possible to further enhance the mood by matching it to the atmosphere of the concert hall, etc. For example, by changing the sheet material 15 to match the image pattern or image color of the idol performing at the concert venue, it is possible to further enhance the mood.

[0058] 1(a) and 2, when viewed in the longitudinal direction, the inner wall surface 21 of the intermediate section 9 is located outside the inner wall surface of one longitudinal end section 13 of the light-emitting section 5, but the inner wall surface of the other end section 11 makes it easy to replace the sheet material 15 installed inside the light-emitting section 5. Furthermore, as shown in FIG. 4, even in a configuration in which a tapered section 25 is provided at one longitudinal end section 13 of the light-emitting section 5, it is easy to replace the sheet material 15 installed inside the light-emitting section 5.

[0059] 6(b), the light emitting device 1 is provided with a first sheet material 15A and a second sheet material 15B, the first sheet material 15A is configured to diffuse the light emitted by the light emitter, and the second sheet material 15B is provided with a pattern 23. Furthermore, the first sheet material 15A and the second sheet material 15B are overlapped with each other, and are installed on the sheet material installation section 17 with the first sheet material 15A positioned on the inside and the second sheet material 15B positioned on the outside.

[0060] This allows the second sheet material 15B to be clearly seen only through the light-emitting unit 5, and by replacing only the second sheet material 15B, it is possible to change the pattern 23 seen through the light-emitting unit 5. Furthermore, since the pattern 23 or the like can be drawn on the second sheet material 15B using a printer or by hand, the pattern 23 or the like that suits the preference of the user of the light-emitting device 1 can be easily displayed on the light-emitting device 1.

[0061] 1(a), as described above, the inner diameter of the female screw 35 of the cylindrical portion 7 of the light-emitting portion 5 is equal to or larger than the diameter of the intermediate space 27. This makes it easy to replace the sheet material 15 installed inside the light-emitting portion 5 by removing the lid portion 19 from the cylindrical portion 7.

[0062] 1(a), a first step surface 31 is formed at the boundary between the intermediate space 27 and the grip-side space 29, and a second step surface 39 is formed by placing the lid 19 on the cylindrical portion 7. The sheet material 15 abuts against the first step surface 31 and the second step surface 39, thereby preventing the sheet material 15 from shifting in position in the longitudinal direction of the light emitting device 1 shown in FIG.

[0063] Furthermore, in the light emitting device 1, the sheet material 15 is provided with a temporary locking portion 41 and a temporary locked portion 43, and the sheet material 15 is formed into a cylindrical shape by locking the temporary locked portion 43 to the temporary locking portion 41. This makes it easy to install the sheet material 15 in the sheet material installation portion 17 (inside the light emitting unit 5).

[0064] Here, the light emitting unit 5 shown in Fig. 3 will be described in more detail. The light emitting unit 5 shown in Fig. 3 is, for example, integrally molded, and is formed into a cylindrical shape with a bottom, including a cylindrical portion 45 (tubular portion 7) and a lid portion 19 that closes one opening of the cylindrical portion 45.

[0065] The light-emitting unit 5 shown in Fig. 3 is arranged to be (integrally) installed in the gripping unit 3 (not shown in Fig. 3) at the other opening of the cylindrical unit 45. Inside the light-emitting unit 5 shown in Fig. 3, a sheet material installation section 17 is provided in which a cylindrical sheet material 15 is installed. Light emitted by the light-emitting body of the gripping unit 3 is irradiated into the inside of the light-emitting unit 5, and the light irradiated into the inside passes through the sheet material 15 installed in the sheet material installation section 17 and the flesh portion (flesh portion of the light-emitting unit 5).

[0066] A male screw 33 is provided on the outer periphery of the end of the cylindrical portion 45 on the other opening side for detachably mounting the light emitting portion 5 to the grip portion 3. The internal space of the light emitting portion 5 is cylindrical.

[0067] In the light emitting device 1 having the light emitting unit 5 shown in FIG. 3, the light emitting unit 5 is formed into a cylindrical shape with a bottom, including a cylindrical portion 45 and a lid portion 19. This gives the space inside the light emitting unit 5 a cylindrical side shape with no steps (no snags). This makes it easy to replace the sheet material 15 placed inside the light emitting unit 5. Note that in the light emitting device 1 having the light emitting unit 5 shown in FIG. 3, the lid portion 19 and the grip portion 3 prevent movement of the sheet material 15 placed in the sheet material placement portion 17 (movement in the longitudinal direction of the light emitting device 1).

[0068] Next, the light emitting unit 5 shown in Fig. 5 will be described in more detail. The light emitting unit 5 shown in Fig. 5 is also, for example, integrally molded, and is formed into a cylindrical shape with a bottom, including a cylindrical portion 45 (tubular portion 7) and a lid portion 19 that closes one opening of the cylindrical portion 45. However, it differs from the light emitting unit 5 shown in Fig. 3 in that a large diameter portion 47 is provided at the end on the grip portion 3 side.

[0069] The light-emitting section 5 shown in FIG. 5(a) has a ring-shaped wall 49, which makes the inner diameter of the opening on the opposite side from the lid 19 smaller than the inner diameters of other sections. The ring-shaped wall 49 is formed when the light-emitting section 5 is integrally molded. Therefore, the light-emitting section 5 shown in FIG. 5(a) is subjected to a process such as cutting to remove the ring-shaped wall 49 or the ring-shaped wall 49 and the surrounding area, thereby obtaining the light-emitting section 5 shown in FIG. 5(b). In the light-emitting section 5 shown in FIG. 5(b), slight traces of the process remain on the surface of the opening.

[0070] Next, the light emitting unit 5 shown in Fig. 7 will be described in detail. The light emitting unit 5 shown in Fig. 7 is formed in a bottomed cylindrical shape with a cylindrical portion 45, and is configured to be installed in the gripping unit 3 (not shown in Fig. 7). The light emitting unit 5 shown in Fig. 7 also has a sheet material installation portion 17 in which a cylindrical sheet material 15 is installed, inside an intermediate portion 9 excluding both longitudinal end portions of the cylindrical portion 45. Light emitted by the light emitting body of the gripping unit 3 is irradiated into the interior of the cylindrical portion 45, and the light irradiated into the interior is transmitted through the sheet material 15 installed in the sheet material installation portion 17 and the cylindrical portion 45.

[0071] Moreover, the light emitting unit 5 shown in FIG. 7 is configured to be divided into a first light emitting unit constituent 51 and a second light emitting unit constituent 53 by a plane including the central axis of the cylindrical portion 45. FIG. 7(a) shows a state in which the light emitting unit constituent 51 and the second light emitting unit constituent 53 are divided. FIG. 7(b) shows a state in which the first light emitting unit constituent 51 and the second light emitting unit constituent 53 are joined. The light emitting unit 5 shown in FIG. 7 is configured to be installed on the gripping unit 3 in the state shown in FIG. 7(b). The light emitting unit 5 shown in FIG. 7 differs from the light emitting unit 5 shown in FIG. 3 in that it is divided as described above.

[0072] 7(b) before being placed on the gripping part 3, a temporary locking portion (not shown) may be provided on the first light-emitting part constituent 51, and a temporary locked portion (not shown) may be provided on the second light-emitting part constituent 53. Then, the temporary locked portion may be temporarily locked to the temporary locking portion, thereby maintaining the state shown in FIG.

[0073] The light-emitting unit 5 shown in FIG. 7 is configured so as to be divided into a first light-emitting unit component 51 and a second light-emitting unit component 53 by a plane including the central axis of the cylindrical portion 45, making it easy to replace the sheet material 15 installed inside the light-emitting unit 5.

[0074] The light emitting device 1 shown in Fig. 8 uses the divided light emitting unit 5 as shown in Fig. 7. However, the first light emitting unit constituent 51 and the second light emitting unit constituent 53 are configured to rotate with respect to the gripping unit 3 around a predetermined central axis as the rotation center.

[0075] The first light-emitting part constituent 51 and the second light-emitting part constituent 53 are configured to rotate between rotation positions P1 and P2 shown in Fig. 8. When the first light-emitting part constituent 51 and the second light-emitting part constituent 53 are in the rotation position P1, the light-emitting device 1 is used by emitting light, and when the first light-emitting part constituent 51 and the second light-emitting part constituent 53 are in the rotation position P2, the sheet material 15 is replaced.

[0076] It is also possible to provide a locking portion (locking portion for the light-emitting portion component, not shown) on the first light-emitting portion component 51, provide a locked portion (locked portion for the light-emitting portion component, not shown) on the second light-emitting portion component 53, and lock the locked portion to the locking portion, thereby maintaining the state at the rotation position P1.

[0077] Next, the light-emitting unit 5 shown in Fig. 11 will be described in detail. The grip-side end 13 of the tubular portion 7 of the light-emitting unit 5 shown in Fig. 11 is configured similarly to the grip-side end 13 shown in Fig. 1(a).

[0078] The intermediate space 27, which is the space inside the intermediate portion 9 of the tubular portion 7 of the light-emitting portion 5, is formed in a cylindrical shape. The grip portion-side space 29, which is the space inside the grip portion-side end 13, which is the end on the grip portion 3 side of both longitudinal ends of the tubular portion 7 of the light-emitting portion 5, is also formed in a cylindrical shape. The diameter of the grip portion-side space 29 is smaller than the diameter of the intermediate space 27. The central axis of the intermediate space 27 and the central axis of the grip portion-side space 29 are aligned with each other. A first annular step surface 31 is formed at the boundary between the intermediate space 27 and the grip portion-side space 29. Note that in Figure 11, the grip portion 3 and the parts of the tubular portion 7 on the grip portion 3 side are not shown.

[0079] A locking portion (cylindrical portion locking portion) 61 is provided on the inner periphery of the tip end portion 11, which is the end opposite the grip portion 3, of both longitudinal ends of the cylindrical portion 7 of the light-emitting unit 5. The value of the inner diameter of the locking portion 61 is equal to or larger than the value of the diameter of the intermediate space 27.

[0080] The engaging portion 61 of the tip end portion 11 engages with the engaging portion (lid portion engaging portion) 63 of the lid portion 19, whereby the lid portion 19 is placed on the tubular portion 7 and the opening on the opposite side of the gripping portion 3 of the tubular portion 7 is closed. A second annular step surface 39 is formed at the end of the lid portion 19 on the side of the intermediate portion 9. When the sheet material 15 is placed on the sheet material placing portion 17, the sheet material 15 is configured to abut against the first step surface 31 (not shown in FIGS. 11 to 17) and the second step surface 39.

[0081] The locked portion 63 of the lid portion 19 is configured to have elasticity, and is configured to elastically deform while the lid portion 19 is being installed on the cylindrical portion 7. When the installation of the lid portion 19 on the cylindrical portion 7 is completed, the locked portion 63 is configured to restore its original shape (for example, to restore completely or partially), and the lid portion 19 is locked to the cylindrical portion 7.

[0082] More specifically, the lid-side end 11 of the cylindrical portion 7 is formed in the shape of a short cylinder, as shown in Figure 13. The inner diameter of the lid-side end 11, excluding the ring-shaped (hollow disk-shaped) wall portion 65 at its tip, is slightly larger than that of the intermediate portion 9. The central axes of the lid-side end 11 and the intermediate portion 9 are aligned. The inner diameter of the wall portion 65 of the lid-side end 11 is smaller than that of the lid-side end 11, excluding the wall portion 65, and is, for example, equal to that of the intermediate portion 9. The ring-shaped wall portion 65 is formed at the opening of the lid-side end 11.

[0083] As shown in Figure 12, the lid 19 is configured to include a lid main body 67, an elastic portion 69, and an elastic portion support portion 71. The lid main body 67 is formed in a generally circular disk shape. The outer diameter of the lid main body 67 is approximately equal to the outer diameter of the cylindrical portion 7. When the lid 19 is installed on the cylindrical portion 7, the lid main body 67 closes the opening of the cylindrical portion 7, as shown in Figure 11(a).

[0084] The elastic portion support portion 71 is formed in a low cylindrical shape, and protrudes from one surface in the thickness direction of the lid portion main body portion 67. The central axis of the lid portion main body portion 67 and the central axis of the elastic portion support portion 71 are aligned with each other. The outer diameter of the elastic portion support portion 71 is smaller than the inner diameter of the cylindrical portion 7. When the lid portion 19 is installed in the cylindrical portion 7, the elastic portion support portion 71 protrudes from the lid portion main body portion 67 inside the cylindrical portion 7.

[0085] The elastic portion 69 is formed in the shape of a thin hollow disk. The central axis of the elastic portion 69 and the central axis of the elastic portion support portion 71 are aligned. The elastic portion support portion 71 penetrates the hollow portion of the elastic portion 69, causing the elastic portion 69 to protrude from the outer periphery of the elastic portion support portion 71. Before the lid portion 19 is attached to the cylindrical portion 7, the outer diameter D1 (see FIG. 12) of the elastic portion 69 is slightly larger than the inner diameter D2 (see FIG. 13) of the lid portion-side end portion 11 (excluding the end opposite the intermediate portion 9). When the lid portion 19 is attached to the cylindrical portion 7, the elastic portion 69 undergoes slight elastic deformation, and the elastic portion 69 (the outer periphery of the elastic portion 69) contacts the inner surface of the lid portion-side end portion 11 (excluding the end opposite the intermediate portion 9) with a biasing force. Multiple elastic portions 69 (e.g., three) are provided. The multiple elastic portions 69 are arranged at predetermined intervals in the thickness direction (extension direction of the central axis).

[0086] Next, removal of the lid portion 19 attached to the cylindrical portion 7 will be described with reference to Fig. 11. As shown in Fig. 11(a), even if a force indicated by arrow A1 is applied to the lid portion 19 while the lid portion 19 is attached to the cylindrical portion 7, the elastic portion 69 holds the lid portion 19 in place, preventing the lid portion 19 from being removed from the cylindrical portion 7. However, if a force (indicated by arrow A1) strong enough to break the light-emitting portion 5 is applied, the lid portion 19 may come off the cylindrical portion 7.

[0087] Therefore, when a force as shown by arrow A2 is applied to the end of lid portion 19, a rotational moment is applied to lid portion 19, causing lid portion 19 to rotate and become tilted around fulcrum C on the opposite side to the point where the force is applied. Then, lid portion 19 can be removed from cylindrical portion 7 (see FIG. 11(b)).

[0088] To explain further, when a force as indicated by arrow A1 is applied to the lid portion 19, the elastic portion 69 attempts to elastically deform simultaneously along the entire circumference, making it difficult for the elastic portion 69 to deform and resulting in the elastic portion 69 becoming stiff. In contrast, when a force as indicated by arrow A2 is applied to the lid portion 19, the elastic portion 69 first elastically deforms only in a portion of the outer periphery, and this elastically deformed portion gradually moves along the circumference of the elastic portion 69 according to the rotation angle of the lid portion 19. This makes it easier for the elastic portion 69 to deform. Note that when a lid portion 19 that is not attached to the tubular portion 7 is attached to the tubular portion 7, the lid portion 19 is also attached at an angle.

[0089] 14(a), the wall portion 65 is provided as described above, but as shown in FIG. 14(b), the wall portion 65 may be omitted. In the configuration shown in FIG. 14(b), the inner diameter of the lid portion-side end portion 11 may be equal to the inner diameter of the intermediate portion 9. Furthermore, the outer diameter of the lid portion-side end portion 11 may be equal to the outer diameter of the intermediate portion 9. That is, in FIG. 14(b), the cylindrical intermediate portion 9 may be extended upward, and this extended portion may serve as the lid portion-side end portion 11. In this case, the inner diameter of the elastic portion 69 of the lid portion 19 decreases in accordance with the inner diameter of the intermediate portion 9, and the outer diameter of the lid portion main body portion 67 of the lid portion 19 decreases in accordance with the outer diameter of the intermediate portion 9.

[0090] In addition, while the thickness of the disk of the elastic portion 69 is constant in FIG. 14(a), the thickness of the disk of the elastic portion 69 may vary as shown in FIG. 14(c). In the embodiment shown in FIG. 14(c), the thickness dimension of the elastic portion 69 gradually decreases with increasing distance from the elastic portion support portion 71. In addition, in the embodiment shown in FIG. 14(c), the lower side of the elastic portion 69 (the side opposite the lid portion main body portion 67) is inclined, but the upper side of the elastic portion 69 may also be inclined, or both the upper and lower sides of the elastic portion 69 may also be inclined. Furthermore, the lid portion side end portion 11 may be deleted, the intermediate portion 9 may be extended by that amount, and the lid portion 19 shown in FIG. 12 may be installed at the end of the intermediate portion 9.

[0091] Next, the light-emitting unit 5 shown in Fig. 15 (Figs. 16 and 17) will be described in detail. The light-emitting unit 5 shown in Fig. 15 differs from the light-emitting unit 5 shown in Fig. 11 in the configuration of the lid portion 19, but is otherwise configured in a similar manner to the light-emitting unit 5 shown in Fig. 11.

[0092] As shown in FIG. 16 and other figures, the cylindrical portion 7 is configured generally similarly to the light-emitting portion 5 shown in FIG. 11. However, for example, in the cylindrical portion 7 shown in FIG. 16 and other figures, the thickness dimension of the wall portion 65 (the dimension in the vertical direction in FIG. 16) is larger than that shown in FIG. 13(a). As shown in FIG. 17, the lid portion 19 is configured to include a lid main body 67 and multiple protrusions 73. The protrusions 73 protrude from one surface of the lid main body 67 in the thickness direction near the outer periphery of the lid main body 67, similar to the elastic support portion 71 described above. When the lid portion 19 is installed in the cylindrical portion 7, the protrusions 73 protrude from the lid main body 67 inside the cylindrical portion 7. The protrusions 73 are provided at positions that, for example, equally divide the outer periphery of the lid main body 67.

[0093] The protrusion 73 is configured to include a resilient arm portion 75 and a locking piece 77. The resilient arm portion 75 protrudes directly from the cover main body portion 67, and the resilient arm portion 75 is provided at the tip of the locking piece 77.

[0094] When the lid 19 is in the process of being installed on the tubular portion 7, the interlocking piece 77 abuts against the wall portion 65 of the tubular portion 7, causing the elastic arm portion 75 to elastically deform. When the lid 19 has been installed on the tubular portion 7, the interlocking piece 77 climbs over the wall portion 65, causing the elastic arm portion 75 to return to its original shape and fit within the lid-side end portion 11 of the tubular portion 7 (the end portion excluding the wall portion 65). Then, the interlocking portion 63 of the lid 19 is interlocked with the interlocking portion 61 of the tubular portion 7.

[0095] The lid portion 19 is also attached to and detached from the cylindrical portion 7 by tilting the lid portion 19 obliquely, as in the case described with reference to Fig. 11. Note that the lid portion 19 may also be attached to the cylindrical portion 7 without tilting the lid portion 19.

[0096] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment. [Explanation of symbols]

[0097] 1 Lighting device 3 Gripping part 5 Light-emitting part 7 Cylindrical part 9 Middle section 11 Lid side end (tip side end) 13 Grip side end (proximal end) 15 Sheet material 15A First sheet material 15B Second sheet material 17 Sheet material installation section 19 Lid 21 Inner wall surface 23 Picture 25 Tapered section 27 Intermediate space 29 Grip side space 31 First step surface 35 female screw 37 Male screw 39 Second step surface 51 First light-emitting unit structure 53 Second light-emitting unit structure 61 Locking part 63 quilt stop

Claims

1. a gripping portion having a light emitter provided therein; a light emitting section formed in a bottomed cylindrical shape having a cylindrical portion, which is placed on the gripping section, and in which a sheet material placement section is provided inside a middle section of the cylindrical portion excluding both longitudinal ends, on which a cylindrical sheet material is placed, and in which light emitted by the light emitter is irradiated into the interior of the cylindrical portion, and the light irradiated into the interior passes through the sheet material and the cylindrical portion; and the sheet material placement section is configured to have an inner wall surface shaped like a side surface of a columnar solid, and the sheet material placed in the sheet material placement section in a cylindrical shape is configured to abut against the inner wall surface, When viewed in the longitudinal direction of the light-emitting section, an inner wall surface of the intermediate section and an inner wall surface of at least one of both longitudinal end portions of the cylindrical section overlap each other, Alternatively, when viewed in the longitudinal direction of the light-emitting portion, the inner wall surface of the intermediate portion is present inside the inner wall surface of at least one of both end portions in the longitudinal direction of the cylindrical portion, Alternatively, a tapered portion is provided at at least one of both longitudinal ends of the light-emitting portion, and the inner diameter of this tapered portion gradually decreases as it moves away from the intermediate portion.

2. The sheet material includes a first sheet material and a second sheet material, the first sheet material is configured to diffuse light emitted by the light emitter, The second sheet material has a picture printed thereon, The light-emitting device according to claim 1, wherein the first sheet material and the second sheet material overlap each other and are configured to be installed on the sheet material installation section with the first sheet material positioned on the inside and the second sheet material positioned on the outside.

3. an intermediate space, which is an inner space of an intermediate portion of the cylindrical portion of the light-emitting portion, is formed in a cylindrical shape; a gripping portion-side space, which is an inner space of a gripping portion-side end portion, which is an end portion of the cylindrical portion of the light-emitting portion in the longitudinal direction that is closer to the gripping portion, is also formed in a cylindrical shape; The diameter of the grip portion side space is smaller than the diameter of the intermediate space, The central axis of the intermediate space and the central axis of the grip portion side space are aligned with each other, a first annular step surface is formed at the boundary between the intermediate space and the grip portion side space, a female screw is formed on an inner periphery of a tip end portion of the cylindrical portion of the light-emitting unit, the tip end portion being the end opposite the grip portion in the longitudinal direction; The inner diameter of the female screw is equal to or larger than the diameter of the intermediate space, The male thread of the lid portion is threadedly engaged with the female thread of the tip end portion, whereby the lid portion is attached to the cylindrical portion, an opening of the cylindrical portion opposite to the grip portion is closed, and an annular second step surface is formed at the end of the lid portion on the side of the intermediate portion, 3. The light-emitting device according to claim 1, wherein the sheet material is configured to abut against the first step surface and the second step surface when the sheet material is placed on the sheet material placement section.

4. an intermediate space, which is an inner space of an intermediate portion of the cylindrical portion of the light-emitting portion, is formed in a cylindrical shape; a gripping portion-side space, which is an inner space of a gripping portion-side end portion, which is an end portion of the cylindrical portion of the light-emitting portion in the longitudinal direction that is closer to the gripping portion, is also formed in a cylindrical shape; The diameter of the grip portion side space is smaller than the diameter of the intermediate space, The central axis of the intermediate space and the central axis of the grip portion side space are aligned with each other, a first annular step surface is formed at the boundary between the intermediate space and the grip portion side space, a locking portion is provided on an inner periphery of a tip end portion, which is an end portion opposite the grip portion, of both longitudinal end portions of the cylindrical portion of the light emitting portion; The inner diameter of the locking portion is equal to or larger than the diameter of the intermediate space, The engaging portion of the lid portion is engaged with the engaging portion of the tip end portion, whereby the lid portion is installed on the tubular portion, an opening of the tubular portion opposite the grip portion is closed, and a second annular stepped surface is formed at the end of the lid portion on the side of the intermediate portion, When the sheet material is placed on the sheet material placement section, the sheet material is configured to come into contact with the first step surface and the second step surface, The light-emitting device described in claim 1 or claim 2, wherein the engaging portion of the lid portion is configured to be elastic, and the engaging portion elastically deforms while the lid portion is being installed on the tubular portion, and when the lid portion has been installed on the tubular portion, the engaging portion returns to its original shape, and the lid portion is engaged with the tubular portion.

5. a gripping portion having a light emitter provided therein; a light emitting section which is formed in a cylindrical shape with a bottom and which has a cylindrical section and a lid section which closes one opening of the cylindrical section, which is placed on the gripping section at the other opening of the cylindrical section, and which has a sheet material placement section inside on which a cylindrical sheet material is placed, and which irradiates light emitted by the light emitting body into the interior, and the light irradiated into the interior passes through the sheet material and the flesh section; and A light emitting device in which a male screw is provided on the outer periphery of the end of the cylindrical portion on the other opening side.

6. a gripping portion having a light emitter provided therein; a light emitting section formed in a bottomed cylindrical shape having a cylindrical portion, which is placed on the gripping section, and in which a sheet material placement section is provided inside a middle section of the cylindrical portion excluding both longitudinal ends, in which a cylindrical sheet material is placed, and in which light emitted by the light emitter is irradiated into the interior of the cylindrical portion, and the light irradiated into the interior passes through the sheet material and the cylindrical portion; and The light emitting device is configured so that the light emitting portion is divided into a first light emitting portion constituent and a second light emitting portion constituent by a plane including a central axis of the cylindrical portion.

7. The sheet material is provided with a temporary locking portion and a temporary locked portion, 3. The light emitting device according to claim 1, wherein the sheet material is formed into a cylindrical shape by the temporary locking portion being locked with the temporary locking portion.

Images