Attachment of light emitting tool and cover of light emitting tool

Abstract

To provide an attachment of a light emitting tool capable of easily changing appearance around a base end side portion, in a light emitting tool comprising a tip side portion (light emitting part) and a base end side portion (holding part).SOLUTION: An attachment 15 for a light emitting tool comprises: a cover 17 inside which a base end side portion 3 of a light emitting tool 1, which is configured to comprise the base end side portion 3 and a tip side portion 5, is placed, and which covers the base end side portion 3; and a cover fixing member 19 that engages with the cover 17 and the light emitting tool 1 to fix the cover 17 to the light emitting tool 1 when the cover 17 is temporarily installed on the light emitting tool 1 so that the cover covers the base end side portion 3 with the base end side portion 3 placed thereinside.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an attachment for a light emitting device and a cover for a light emitting device, and more particularly to an attachment for a light emitting device that is used by being attached to the base end portion of the light emitting device. [Background technology]

[0002] Conventionally, a penlight (light-emitting device) has been known that has a sheet member attached to one end (tip side) of a grip portion (base end portion) and a protective member attached to the base end portion so as to cover this sheet-like member (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6060290 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional light emitting devices, only a portion of the base end portion can be decorated. However, there is a demand for a light emitting device that can easily change the appearance of the entire base end portion, such as by decorating the entire base end portion. The object of the present invention is to provide a light emitting device attachment and a light emitting device cover that can easily change the appearance around the base end portion of a light emitting device that has a tip end portion and a base end portion. [Means for solving the problem]

[0005] The cover for a light-emitting device according to an aspect of the present invention is a cover for a light-emitting device that is installed on a light-emitting device that is configured to have a tip-end portion and a base-end portion, and that covers the base-end portion by placing the base-end portion inside, and is freely attachable and detachable to the light-emitting device.

[0006] A cover for a light-emitting device according to an embodiment of the present invention is configured to include a cylindrical portion and to have an engaging portion provided thereon, the base end portion of the light-emitting device is formed in a cylindrical shape, the base end portion of the light-emitting device is provided with an engaging portion, the central axis of the cylindrical portion and the central axis of the base end portion of the light-emitting device are aligned with each other, the opening of the cylindrical portion and the base end of the base end portion of the light-emitting device face each other and are spaced apart from the light-emitting device, the cover moves in the extension direction of the central axis relative to the base end portion of the light-emitting device, and when this movement is completed, the base end portion of the light-emitting device enters the cylindrical portion and the engaging portion engages with the engaging portion, and by rotating the cover by a predetermined angle relative to the base end portion of the light-emitting device around the central axis while maintaining the engaged state between the engaging portion and the engaging portion, the cover for a light-emitting device according to claim 1 is configured to be installed on the light-emitting device.

[0007] A cover for a light emitting device according to an aspect of the present invention is configured to include a cylindrical portion, and a locking portion is provided on the cylindrical portion, and a base end portion of the light emitting device is formed in a cylindrical shape, and a locking portion is provided on the base end portion of the light emitting device, and the locking portion is configured as a protrusion provided on the base end portion of the light emitting device in a location near the tip end portion, and the locking portion is provided near an opening of the cylindrical portion and is configured as an "L" shaped notch recessed from the inner surface of the cylindrical portion to the outer surface of the cylindrical portion, and The cover for a light emitting device is configured such that the first linear portion of the "L"-shaped cutout extends in the direction of extension of the central axis of the cylindrical portion, and the second linear portion of the "L"-shaped cutout extends from the end of the first linear portion opposite the opening of the cylindrical portion in the circumferential direction of the cylindrical portion, and when installed in the base end portion of the light emitting device, the protrusion is located at the end of the second linear portion of the engaging portion opposite the first linear portion, so that the engaging portion is engaged with the engaging portion.

[0008] A cover for a light-emitting device according to an aspect of the present invention is a cover for a light-emitting device that is installed at a base end portion of the light-emitting device with a biasing force when installed at the light-emitting device.

[0009] An attachment for a light emitting device according to an aspect of the present invention is an attachment for a light emitting device that includes a tip end portion and a base end portion, a cover that fits inside the base end portion of the light emitting device to cover the base end portion, and a cover fixing material that engages with the cover and the light emitting device to fix the cover to the light emitting device when the cover is temporarily installed on the light emitting device so that the base end portion is fitted inside and covers the base end portion.

[0010] In addition, in an attachment for a light-emitting device according to an aspect of the present invention, the cover is formed with a cylindrical portion and is divided into a plurality of cover components along a surface extending in the direction of extension of the generatrix of the cylindrical portion.

[0011] In addition, in an attachment for a light-emitting device according to an aspect of the present invention, the cover is configured to have a cylindrical portion, and the outer diameter of the cylindrical portion changes smoothly and periodically in the direction of extension of the central axis of the tube.

[0012] In addition, in an attachment for a light-emitting device according to an aspect of the present invention, a male screw is provided on a portion of the outer periphery of the cover, the cover fixing material is formed in a ring shape, and a female screw is provided on the inner periphery of the cover fixing material, and when the cover is temporarily installed on the light-emitting device, the male screw of the cover is screwed into the female screw of the cover fixing material, thereby fixing the cover and the cover fixing material to the light-emitting device.

[0013] In addition, in the attachment for a light emitting device according to this aspect of the present invention, the cover is configured to include a cylindrical portion, and a pattern is formed on the cylindrical portion. [Effects of the Invention]

[0014] According to the present invention, in a light emitting device having a distal end portion and a proximal end portion, the effect is achieved that the appearance around the proximal end portion can be easily changed. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a diagram showing an attachment for a light-emitting device according to an embodiment of the present invention, and a light-emitting device to which the attachment for the light-emitting device is installed and fixed. [Figure 2] (a) is a view corresponding to FIG. 1, showing a cross section of the light-emitting device attachment and a portion of the light-emitting device, (b) is a view taken along arrow IIB in (a), and (c) is a view taken along arrow IIC in (a). [Figure 3] 2(a) shows a state in which the cover fixing member of the light emitting device attachment and the lid portion at the tip side portion have been removed. FIG. [Figure 4] FIG. 4(a) is a cross-sectional view of a cover of an attachment of a light emitting device according to an embodiment of the present invention, and FIG. 4(b) is a view taken along the arrow IVB in FIG. [Figure 5] 4(a) is a view showing a state in which the attachment of the light emitting device shown in FIG. 4(a) is separated, and FIG. 4(b) is a view seen from the arrow VB in FIG. 4(a). [Figure 6] 4(a) is an enlarged view of the VIA portion in FIG. 4(a), and FIG. 4(b) is a diagram showing a modified example of what is shown in FIG. 4(a). [Figure 7] 6A is a cross-sectional view of a cover fixing member of an attachment for a light emitting device according to an embodiment of the present invention, and FIG. 6B is a view taken along the arrow VIIB in FIG. 6A. [Figure 8] FIG. 3 is a view corresponding to FIG. 2(a) and showing a manner in which an attachment is fixed to a light emitting device according to a first modified example. [Figure 9] FIG. 10(a) is a diagram showing a manner in which an attachment is fixed to a light emitting device according to a second modified example, and FIG. 10(b) is a view taken along the arrow IXB in FIG. [Figure 10] FIG. 9 is a cross-sectional view of an attachment for a light emitting device and a part of the light emitting device. [Figure 11]FIG. 11 is a view corresponding to FIG. 10, showing a manner in which an attachment is fixed to a light emitting device according to a third modified example. [Figure 12] FIG. 10 is a diagram showing a cover for an attachment of a light-emitting device according to a fourth modified example. [Figure 13] FIG. 13 is a diagram showing the pattern shown in FIG. 12 in a developed form. [Figure 14] 10A and 10B are diagrams showing the shape of the cover of the light-emitting device attachment at the location where the light-emitting device switch is provided. [Figure 15] FIG. 10 is a perspective view showing a cover for a light-emitting device according to another embodiment of the present invention and a base end portion of the light-emitting device (a base end portion of the light-emitting device that is distant from the cover) on which the cover for the light-emitting device is installed. [Figure 16] 16 is a perspective view of the cover of the light emitting device and the base end side portion of the light emitting device in the state shown in FIG. 15, viewed from different directions. [Figure 17] 15 and 16 are diagrams for explaining the installation of the cover of the light-emitting device on the light-emitting device, where (a) shows the state before the cover is installed on the light-emitting device, (b) shows the state in the middle of installing the cover of the light-emitting device on the light-emitting device, and (c) shows the state after the cover of the light-emitting device has been installed on the light-emitting device. [Figure 18] (a) is an enlarged view of part XVIIIA in Figure 17, (b) is an enlarged view of part XVIIIB in Figure 17, (c) is an enlarged view of part XVIIIC in Figure 17, (d) is a view showing the XVIIID-XVIIID cross section in (b), and (e) is a view showing the XVIIIE-XVIIIE cross section in (c). [Figure 19] (a) is a diagram showing the operating part (push button switch) provided at the base end part of the light-emitting device and the surrounding area when the cover of the light-emitting device according to another embodiment of the present invention is installed on the light-emitting device, and (b) is a diagram showing the XIXB-XIXB cross section in (a), as well as a diagram showing the surface of the light-emitting device, which is actually arc-shaped, and the cover of the light-emitting device expanded to form a straight line. [Figure 20] FIG. 19(b) corresponds to FIG. 19(a) and shows a modification of the peripheral portion. [Figure 21] FIG. 17C is a view corresponding to FIG. 18C, showing a locked portion according to a modified example. [Figure 22] This is a figure equivalent to Figure 19 and shows the peripheral area after deformation, (b) shows the XXIIB-XXIIB cross section in (a), and also shows the surface of the light-emitting device, which is actually arc-shaped, and the cover of the light-emitting device expanded to show a straight line, and (c) shows the XXIIC-XXIIC cross section in (a). [Figure 23] 10A and 10B are diagrams showing a cover of a light emitting device according to a modified example. [Figure 24] 10A and 10B are diagrams showing a cover of a light emitting device according to a modified example. [Figure 25] 10A and 10B are diagrams showing a cover of a light emitting device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0016] 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 base end portion (holding portion) 3 and a tip end portion (light-emitting portion) 5, as shown in FIG. 1, etc.

[0017] The base end portion 3 is formed in a bottomed tubular shape (for example, a bottomed cylindrical shape). Light emitters (for example, red LEDs, blue LEDs, and green LEDs) (not shown) are provided inside the base end portion 3. The light emitters are designed so that the light emission color and light emission pattern can be changed as appropriate.

[0018] The base end part 3 is provided with a switch 7 (see FIG. 14) for turning the power of the light emitting device 1 on and off, and a switch 9 for changing the light emission pattern of the light emitter, etc. The base end part 3 is made of, for example, an opaque synthetic resin, and is provided inside the base end part 3 with a power source for making the light emitter emit light, and a control unit (not shown).

[0019] The distal end portion 5 is formed in a bottomed tubular shape including a tubular portion (for example, a cylindrical tubular portion) 11 and a lid portion 13, and is configured to be installed in the proximal end portion 3. Light emitted by the light emitter is irradiated into the interior of the distal end portion 5, and the light irradiated into the interior passes through the distal end portion 5, causing the distal end portion 5 to emit light.

[0020] The lid portion 13 of the distal end portion 5 closes one of the openings at both ends of the tubular portion 11. The tubular portion 11 is made of, for example, a colorless, transparent synthetic resin. The tubular portion 11 may also be made of a colored, transparent synthetic resin or a translucent synthetic resin. The lid portion 13 is also made of a synthetic resin.

[0021] The tip side section 5 is set integrally to the base side section 3 by engaging the other end of the tubular section 11 (the opposite end of the lid section) with the end on the opening side of the base side section 3. When the tip side section 5 is set to the base side section 3, the opening of the tip side section 5 is connected to the opening of the base side section 3, and the outer shapes of the tip side section 5 and the base side section 3 (the outer shape of the light-emitting device 1) are elongated columnar (for example, elongated cylindrical).

[0022] 1 and 2, a light emitting device attachment (cover for base end portion) 15 is installed on the light emitting device 1. The light emitting device attachment 15 is configured to include a cover (cover main body) 17 and a cover fixing member 19.

[0023] The cover 17 is configured to enclose and cover the base end portion 3 of the light emitting device 1 by placing the base end portion 3 inside. The cover fixing member 19 is configured as a separate body from the cover 17.

[0024] The cover fixing member 19 is adapted to engage with the cover 17 and the light emitting device 1 (for example, the base end portion 3) when the cover 17 is temporarily installed on the light emitting device 1 (for example, the base end portion 3) with the base end portion 3 inside and covering the base end portion 3. The cover fixing member 19 is adapted to fix the cover 17 to the light emitting device 1 (for example, the base end portion 3).

[0025] When the cover 17 is fixed to the light emitting device 1 by the cover fixing material 19, the light emitting device 1, the cover 17 and the cover fixing material 19 are integrated.

[0026] The cover 17, which is not installed on the light emitting device 1, can be easily temporarily installed on the base end portion 3, and the cover 17, which is temporarily installed on the light emitting device 1, can be easily removed from the light emitting device 1. For example, the temporary installation and removal can be performed by a simple operation that applies a force that is normally exerted by a human finger. In other words, the cover 17 can be easily attached to and detached from the light emitting device 1 (base end portion 3).

[0027] Similarly, the cover fixing member 19 is also detachable from the cover 17 temporarily installed on the light emitting device 1 and the light emitting device 1. This allows the cover 17 fixed to the light emitting device 1 to be easily attached, detached, or replaced in a short time of within a few minutes or within a few tens of seconds.

[0028] Furthermore, the cover 17 installed and fixed to the light emitting device 1 covers the entire base end portion 3 except for the portion of the through hole 21 (see FIG. 14) that exposes the switches 7 and 9. Note that, when the cover 17 is fixed to the light emitting device 1, a small portion of the base end portion 3 may be exposed without being covered by the cover 17. Examples of the small portion include the end of the base end portion 3 on the tip end portion 5 side and the end of the base end portion 3 opposite to the tip end portion 5.

[0029] Furthermore, the diameter of the base end portion 3 where the cover 17 is not installed is somewhat slim so that it can be held in the hand of a person (for example, an adult). For example, it is about 20 mm to 25 mm. The outer diameter of the cover 17 is a value suitable for holding in the hand of a person (for example, about 25 mm to 35 mm). As a result, in the light emitting device 1 to which the cover 17 is fixed, the outer diameter of the portion that the user of the light emitting device 1 holds in their hand is a value suitable for holding in the hand of a person (a value that is easy to hold in a human hand).

[0030] 2 to 4, cover 17 is formed in a bottomed cylindrical shape and includes a cylindrical portion 25 and a lid portion 27. In order to enable temporary installation on light emitting device 1, cover 17 is divided into a plurality of cover components (17A, 17B) at a surface 23 extending in the direction of extension of the generatrix of cylindrical portion 25 (a surface extending along the generatrix) (see FIG. 4).

[0031] For example, cover 17 is configured so as to be divided into first cover component 17A and second cover component 17B by plane 23 including the central axis of cylindrical portion 25. Note that cover 17 may also be divided into a plurality of cover components by curved surfaces extending generally in the direction of extension of the central axis of cylindrical portion 25. For example, the line segment indicated by reference numeral 23 in Fig. 1 may be sinusoidal or other wavy and extend in the left-right direction of Fig. 1. Note that cover 17 may not be divided but may be molded as a single unit.

[0032] The cover 17 formed by temporarily assembling a plurality of cover components 17A, 17B is attached to the light emitting device 1 by the cover fixing material 19, and is fixed to the light emitting device 1 together with the cover fixing material 19.

[0033] A male screw 29 is provided on a part of the outer periphery of the cover 17 (for example, the end on the opening side of the bottomed cylindrical cover 17). The cover fixing member 19 is formed in an annular (for example, circular) shape, as shown in Fig. 7 etc. A female screw 31 is provided on the inner periphery of the cover fixing member 19.

[0034] With the cover 17 temporarily installed on the light emitting device 1, the light emitting device 1 is passed through the cover fixing member 19, the male thread 29 of the cover 17 is screwed into the female thread 31 of the cover fixing member 19, and the cover fixing member 19 is brought into contact with the light emitting device 1. In this way, the cover 17 and the cover fixing member 19 are configured to be fixed to the light emitting device 1.

[0035] The light emitting device attachment 15 will be described in further detail. As can be seen from Figure 2 and other figures, the cover components 17A and 17B, which are temporarily assembled into a bottomed cylindrical shape, are maintained in an integrated state by the cover fixing member 19. Here, as shown in Figures 3 and 4 and other figures, a locking portion 33 may be provided on the cover component 17A, and a locked portion 35 may be provided on the cover component 17B.

[0036] The locking portion 33 and the locked portion 35 are provided in the center of the lid portion 27 of the cover 17. As shown in Figure 6(a), the locked portion 35 is configured to include a cantilever-shaped elastic arm portion 37 and an locked piece 39 provided at the tip of the elastic arm portion 37. The locking portion 33 is configured to include a recess 41 and a through hole 43.

[0037] Then, the elastic arm portion 37 of the locked portion 35 fits into the recess 41 of the locking portion 33, and the locked piece 39 of the locked portion 35 fits into the through hole 43 of the locking portion 33, so that the locked portion 35 is locked to the locking portion 33. In this state, the locked portion 35 and the locking portion 33 do not protrude from the end surface 45 of the lid portion 27 (they are in a non-protruding state).

[0038] When the locked portion 35 is locked to the locking portion 33, the cover components 17A and 17B are fixed to each other not only by the cover fixing material 19 but also by the locking portion 33 and the locked portion 35.

[0039] When the locked portion 35 is locked to the locking portion 33, the locked portion 35 is located at the position indicated by reference symbol P1. When the locked portion 35 is released from the locking portion 33, the elastic arm portion 37 elastically deforms, as indicated by reference symbol P2, and the locked portion 35 moves away from the locking portion 33.

[0040] To release the locked portion 35 from being locked by the locking portion 33, a finger or a rod-shaped tool is inserted into the through-hole 43 to elastically deform the elastic arm portion 37 to the position indicated by reference symbol P2. As shown in Figure 6(b), the through-hole 43 may be made larger than the case shown in Figure 6(a) to make it easier to insert a finger or a rod-shaped tool into the through-hole 43.

[0041] Note that the cover 17 formed by temporarily assembling a plurality of cover components 17A, 17B may be configured to maintain the temporarily assembled state. For example, a temporary locking portion may be provided on the first cover component 17A, and a temporary locking portion may be provided on the second cover component 17B, and the temporary locking portion may be locked to the temporary locking portion, thereby maintaining the temporarily assembled state. This allows the temporarily assembled cover 17 to maintain the temporarily assembled state even if it exists alone (even if it is not installed on the light emitting device 1).

[0042] The temporary locked portion and the temporary locking portion are provided in a plurality of pairs (for example, three pairs). The first pair is the pair of locked portion 35 and locking portion 33 shown in Fig. 4. The second and third pairs are pairs in which the temporary locked portion and the temporary locking portion are provided at portion 47 shown in Fig. 4.

[0043] 7, the cover fixing member 19 is configured to include an annular small inner diameter portion 49 and an annular large inner diameter portion 51, and is formed in an annular shape overall. The through hole of the small inner diameter portion 49 is formed in the shape of a low cylinder, and a female thread 31 is formed on the inner circumferential surface of the large inner diameter portion 51. The inner diameter of the female thread 31 is smaller than the inner diameter of the through hole of the small inner diameter portion 49, and a step portion (step surface) 53 is formed at the boundary between the small inner diameter portion 49 and the large inner diameter portion 51.

[0044] 2(a), in the light emitting device 1, a step portion (step surface) 55 is formed at the boundary between the base end portion 3 and the tip end portion 5. When the cover 17 and the cover fixing member 19 are installed on the light emitting device 1 and the light emitting device attachment 15 is fixed to the light emitting device 1, the male thread 29 is threaded into the female thread 31, and the side wall portion of the cover 17 abuts against the outer peripheral surface of the base end portion 3.

[0045] Furthermore, when the cover 17 and the cover fixing member 19 are installed on the light emitting device 1, the step portion 53 of the cover fixing member 19 abuts against the step portion 55 of the light emitting device 1, and the lid portion 27 of the cover 17 abuts against the end surface 46 of the base end portion 3. This fixes the cover 17 and the cover fixing member 19 to the light emitting device 1.

[0046] Here, we will explain how to replace the cover 17. In the state shown in Figures 1 and 2, the cover fixing member 19 is removed from the light emitting device 1, and the cover 17 is removed from the light emitting device 1. Next, another cover 17 is installed on the light emitting device 1, and the cover fixing member 19 is installed on the light emitting device 1, thereby completing the replacement of the cover 17.

[0047] The attachment 15 for the light emitting device is configured to include a cover 17 that fits the base end portion 3 inside and covers the base end portion 3, and a cover fixing member 19 that fixes the cover 17 to the light emitting device 1. When the cover 17 is temporarily installed on the light emitting device 1 so that the base end portion 3 is fitted inside and covers the base end portion 3, the cover fixing member 19 engages with the cover 17 and the base end portion 3, thereby fixing the cover 17 and the cover fixing member 19 to the light emitting device 1. This makes it possible to easily change the appearance around the base end portion 3 by installing and removing the cover fixing member 19 on and from the light emitting device 1 and changing the type of cover 17.

[0048] Furthermore, in attachment 15 for a light emitting device, cover 17 is configured to include a cylindrical portion 25, and cover 17 is divided into a plurality of cover components 17A, 17B on a surface extending in the direction of extension of the generatrix of cylindrical portion 25. As a result, even if the outer shape of base-end portion 3 is slightly bent or otherwise deformed, base-end portion 3 can be inserted into cover 17, and cover 17 can be easily temporarily installed on base-end portion 3.

[0049] Furthermore, the light emitting device attachment 15 is configured so that, with the cover 17 temporarily installed on the light emitting device 1, the male thread 29 of the cover 17 is screwed into the female thread 31 of the cover fixing member 19, thereby fixing the cover 17 and the cover fixing member 19 to the light emitting device 1. This makes it even easier to attach and detach the cover 17 and the cover fixing member 19 to and from the light emitting device 1.

[0050] 14(a), switches 7 and 9 (for example, a push button switch for turning the power on and off, and a push button switch for setting and changing the light emission pattern of the light emitter) are provided on the base end portion 3 of the light emitting device 1. The switches 7 and 9 slightly protrude from the outer surface of the base end portion 3.

[0051] The cover 17 is provided with a through-hole 21 that penetrates the flesh, and when the cover 17 is fixed to the light emitting device 1, the through-hole 21 exposes the switches 7 and 9.

[0052] 14(b), when the cover 17 is fixed to the light emitting device 1, the portions of the cover 17 corresponding to the switches 7 and 9 (the portions where the switches 7 and 9 are located) may protrude slightly away from the switches 7 and 9. In this case, the cover 17 is elastic, and when the cover 17 is fixed to the light emitting device 1, a portion of the cover 17 elastically deforms, allowing the switches 7 and 9 to be operated. In the configuration shown in FIG. 14(b), the thickness of the cover 17 is thin at the portions of the cover 17 corresponding to the switches 7 and 9.

[0053] 14(c), in an embodiment in which the switches 7 and 9 do not protrude from the outer surface of the base end portion 3, the cover 17 may not have a portion with a changed shape at the portion corresponding to the switches 7 and 9. In other words, the cover 17 may be formed without providing the above-described holes or protrusions. In this case, the cover 17 is also considered to have elasticity.

[0054] The configuration shown in Fig. 14(d) is the same as the configuration shown in Fig. 14(c), except that the thickness of the cover 17 is reduced at the portions of the cover 17 corresponding to the switches 7 and 9. In the configuration shown in Figs. 14(c) and 14(d) in which the switches 7 and 9 do not protrude from the outer surface of the base end portion 3, a through hole may be provided as shown in Fig. 14(a), or a portion of the cover 17 may be made to protrude as shown in Fig. 14(b).

[0055] Next, a fixing mode of the attachment 15 to the light emitting device 1 according to a first modified example will be described with reference to Fig. 8. In the fixing mode according to the first modified example, a flange portion 59 is provided at the boundary between the base end portion 3 and the tip end portion 5 of the light emitting device 1. The flange portion 59 is used to fix the cover 17 and the cover fixing member 19 to the light emitting device 1, which is what makes this fixing mode different from the mode shown in Fig. 2. Other points in the fixing mode according to the first modified example are the same as those shown in Fig. 2 etc.

[0056] That is, when the cover 17 is fixed to the light emitting device 1, the flange portion 59 is sandwiched between the cover 17 and the cover fixing member 19. As a result, a gap 61 is formed between the end face 46 of the base end portion 3 and the lid portion 27 of the cover 17. Note that in the attachment 15 to the light emitting device 1 according to the first modified example, the end face 46 of the base end portion 3 and the cover 17 may be in contact with each other, and the gap 61 may not be formed.

[0057] Next, a fixing mode of the attachment 15 to the light emitting device 1 according to the second modified example will be described with reference to Figures 9 and 10. In the fixing mode of the attachment 15 to the light emitting device 1 according to the second modified example, the shape of the cover 17 differs from that shown in Figure 2(a), but other points are configured in the same way as that shown in Figure 2(a).

[0058] That is, in the cover 17 shown in FIGS. 9 and 10, the outer diameter of the cylindrical portion 25 changes smoothly and periodically in the direction of extension of the central axis of the cylinder.

[0059] When a cross section (a cross section taken along a plane including the central axis of the cylindrical portion 25) of the cover 17 is taken, as shown in Fig. 10, the outer surface of the cylindrical portion 25 is smoothly wavy (without sharp bends) (for example, a sinusoidal wave, or a wave formed by appropriately connecting semicircular or semi-elliptical arcs).

[0060] The thickness dimension of the wall of the cylindrical portion 25 is almost constant. As a result, when a cross section of the cylindrical portion 25 of the cover 17 is taken, the inner surface of the cylindrical portion is almost parallel to the outer surface and has a smooth wavy shape like the outer surface.

[0061] The wave-like shape has a constant amplitude and period, but at least one of the amplitude and period may be variable. When the cover 17 is attached to the base-end portion 3, for example, the portion of the inner surface of the cylindrical portion 25 of the cover 17 where the inner diameter is smallest is in contact with the base-end portion 3.

[0062] This makes it easier to hold the light emitting device 1 to which the cover 17 is fixed by the cover 17, and the non-shining parts of the light emitting device 1 are decorated, improving its appearance. In the configuration shown in Fig. 10, the end face 46 of the base end portion 3 and the cover 17 are in contact with each other, but the end face 46 of the base end portion 3 and the cover 17 may be separated, forming a gap as shown in Fig. 8. In the cover 7 shown in Figs. 9 and 10, the cover 17 may be divided as shown in Fig. 2 etc.

[0063] Next, a fixing mode of the attachment 15 to the light emitting device 1 according to the third modified example will be described with reference to Fig. 11. In the fixing mode of the attachment 15 to the light emitting device 1 according to the third modified example, the shape of the cover 17 differs from that shown in Figs. 9 and 10, but other points are configured in the same way as those shown in Figs.

[0064] 11 differs from the cover 17 shown in Figures 9 and 10 in that it has a protrusion 63 at the center of the lid portion 27 of the cover 17 that protrudes slightly toward the opening side of the cover 17 on the inside of the cover 17. The cover 17 shown in Figure 11 also differs from the cover 17 shown in Figures 9 and 10 in that it uses a bolt 65 as the cover fixing member 19 instead of the annular cover fixing member 19 shown in Figure 10.

[0065] 11, when the cover 17 is attached to the light emitting device 1, the protrusion 63 abuts against the end surface 46 of the base end portion 3, and the male thread of the bolt 65 is screwed into a female thread (not shown) provided on the base end portion 3. The cover 17 shown in FIGS. 1 and 2(a) may be fixed to the light emitting device 1 by the protrusion 63 and the bolt 65, as shown in FIG.

[0066] Next, a fixing mode of the attachment 15 to the light emitting device 1 according to a fourth modified example will be described with reference to Figures 12 and 13. The fixing mode of the attachment 15 to the light emitting device 1 according to the fourth modified example differs from that shown in Figure 2(a) in that a pattern 67 is provided on the cover 17, but is otherwise similar to that shown in Figure 2(a).

[0067] 12 and 13, a pattern (for example, a quilted pattern) 67 is formed on the cover 17 (for example, the cylindrical portion 25). The pattern 67 is formed by protrusions, recesses, ink, etc. provided on at least one of the outer surface and the inner surface of the cover 17.

[0068] By providing the pattern 67 in this way, the decorative effect of the cover 17 on the light emitting device 1 can be further enhanced.

[0069] Here, a light emitting device cover (light emitting device cover) 71 according to a modified example will be described. The light emitting device cover 71 is used by being attached to a base end portion (holding portion) 75 of a light emitting device 73, similar to the light emitting device attachment 15, as shown in Figs. 15 to 18. The light emitting device 73 is configured almost the same as the light emitting device 1, and is configured with a tip end portion (light emitting portion) 77.

[0070] The cover 71 of the light emitting device is integrally installed on the light emitting device 73 (for example, the base end portion 75), and covers the base end portion 75 by placing the base end portion 75 inside, and is freely attachable and detachable to the light emitting device 73 (for example, the base end portion 75).

[0071] To explain further, when the light emitting device 73 and the light emitting device cover 71 are separated from each other, the light emitting device 73 is held in one hand (held with bare hand) and the light emitting device cover 71 is held in the other hand (held with bare hand). Then, by appropriately moving the light emitting device cover 71 relative to the light emitting device 73, the light emitting device cover 71 can be installed integrally with the light emitting device 73 without using the cover fixing member 19 shown in Figs. 1 and 2.

[0072] Furthermore, from a state in which the light-emitting device cover 71 is integrally installed on the light-emitting device 73, the light-emitting device 73 is held in one hand (held with a bare hand) and the light-emitting device cover 71 is held with the other hand (held with a bare hand). Then, by appropriately moving the light-emitting device cover 71 relative to the light-emitting device 73, the light-emitting device cover 71 can be separated from the light-emitting device 73. This makes the light-emitting device cover 71 detachable from the light-emitting device 73 (base end side portion 75) (making it easy to attach and detach). Note that movement of the light-emitting device cover 71 includes not only translation of the light-emitting device cover 71 but also rotation of the light-emitting device cover 71 (changing its position).

[0073] Furthermore, the cover 71 of the light emitting device is made of a material such as synthetic resin, and is adapted to undergo elastic deformation (for example, slight elastic deformation). The housing of the light emitting device 73 (the housing of the base end portion 75 and the tip end portion 77) that constitute the light emitting device 73 is also made of a material such as synthetic resin, but the housing of the light emitting device 73 has a degree of rigidity that can be regarded as almost a rigid body.

[0074] The light emitting device cover 71 is configured to include a cylindrical portion 79 and a bottom wall portion 81. As a result, the light emitting device cover 71 is formed in a cylindrical shape with a bottom. The light emitting device cover 71 is also provided with an interlocking portion 83. The interlocking portion 83 is provided, for example, in the cylindrical portion 79.

[0075] The base end portion 75 of the light emitting device 73 is formed in a cylindrical shape, and a locking portion 76 is provided at the base end portion 75 of the light emitting device 73.

[0076] Here, the installation of the light emitting device cover 71 on the light emitting device 73 will be described. The pre-assembly state (see Figures 15, 16, and 17(a)) in which the light emitting device cover 71 is not installed on the light emitting device 73 will be described. In the pre-assembly state, the light emitting device cover 71 is separated from the light emitting device 73. In the pre-assembly state, the central axis of the cylindrical portion 79 of the light emitting device cover 71 and the central axis of the base end portion 75 of the light emitting device 73 are aligned with each other. Also, in the pre-assembly state, the opening 85 of the cylindrical portion 79 (the opening located opposite the bottom wall portion 81) and the base end of the base end portion 75 of the light emitting device 73 (the end opposite the tip end portion 77) face each other.

[0077] When the light emitting device cover 71 is to be installed on the light emitting device 73, the light emitting device cover 71 is moved from the pre-assembly state in the direction of extension of the central axis relative to the base end portion 75 of the light emitting device 73. When this movement is complete, the base end portion 75 of the light emitting device 73 enters the cylindrical portion 79 and the locked portion 83 engages with the locking portion 76 (see FIG. 17(b)). Note that the locked portion 83 is not locked to the locking portion 76 by the above-mentioned engagement alone.

[0078] Thereafter, while maintaining the engagement between the locking portion 76 and the locked portion 83, the light emitting device cover 71 is rotated by a predetermined angle with respect to the base end portion 75 of the light emitting device 73, with the central axis as the center of rotation. As a result, the locked portion 83 is locked to the locking portion 76, as shown in Figure 17(c). Then, the light emitting device cover 71 is configured to be installed on the light emitting device 73 with the base end portion 75 of the light emitting device 73 inside the light emitting device cover 71.

[0079] When the light-emitting device cover 71 is attached to the light-emitting device 73 (assembly completed state), the operation of removing the light-emitting device cover 71 from the light-emitting device 73 is reversed from that of attaching the light-emitting device cover 71 to the light-emitting device 73.

[0080] That is, in the assembled state, the light emitting device cover 71 is rotated by a predetermined angle in the opposite direction to the installation relative to the base end portion 75 of the light emitting device 73, with the central axis as the rotation center. After this, the light emitting device cover 71 is moved in the extension direction of the central axis, which is the opposite direction to the installation relative to the light emitting device 73. This makes it possible to remove the light emitting device cover 71 from the light emitting device 73.

[0081] The locking portion 76 and the locked portion 83 will be described in more detail using examples. As described above, the locked portion 83 is provided on the cylindrical portion 79 of the light emitting device cover 71. The locking portion 76 is provided on the cylindrical base end portion 75 of the light emitting device 73.

[0082] The locking portion 76 is configured by a protrusion 87 provided at a location in the vicinity of the tip end portion 77 of the base end portion 75 of the light emitting device 73 .

[0083] The engaging portion 83 is provided near the opening 85 of the cylindrical portion 79 of the light-emitting device cover 71, and is composed of an "L"-shaped notch 89 recessed from the inner surface of the cylindrical portion 79 to the outer surface of the cylindrical portion 79.

[0084] A first linear portion 91 of the "L"-shaped cutout 89 extends in the direction of extension of the central axis of the cylindrical portion 79. A second linear portion 93 of the "L"-shaped cutout 89 extends in the circumferential direction of the cylindrical portion 79 from the end of the first linear portion 91 (the end of the cylindrical portion 79 opposite the opening 85).

[0085] When the light emitting device cover 71 is installed on the base end portion 75 of the light emitting device 73 (in the assembled state), the locking portion 76 (protrusion 87) is located at the end of the second linear portion 93 of the locked portion 83 (the end opposite to the first linear portion 91). The locked portion 83 is configured to be locked to the locking portion 76.

[0086] In addition, in the state where the assembly is completed, the light emitting device cover 71 is attached to the base end portion 75 of the light emitting device 73 with a biasing force. For example, the outer diameter of the base end portion 75 of the light emitting device 73 is slightly larger than the inner diameter of the cylindrical portion 79 of the light emitting device cover 71. In addition, in the state where the light emitting device cover 71 is attached to the light emitting device 73, the cylindrical portion 79 is slightly elastically deformed and fastens the base end portion 75.

[0087] In the mode of generating the above-mentioned biasing force, the light emitting device cover 71 may have a rigidity that can be regarded as a substantially rigid body, and the light emitting device 73 may be configured to undergo slight elastic deformation. Also, the light emitting device cover 71 and the light emitting device 73 may be configured to undergo slight elastic deformation.

[0088] Furthermore, the light emitting device cover 71 and the light emitting device 73 may have such rigidity that they can be regarded as substantially rigid bodies. In this case, the value of the outer diameter of the base end portion 75 of the light emitting device 73 is equal to the value of the inner diameter of the cylindrical portion 79 of the light emitting device cover 71. Note that the value of the outer diameter of the base end portion 75 of the light emitting device 73 may be very slightly larger or very slightly smaller than the value of the inner diameter of the cylindrical portion 79 of the light emitting device cover 71.

[0089] Here, the light emitting device cover 71 and the light emitting device 73 will be described in more detail. The protrusion 87 of the locking portion 76 is formed in a short cylindrical shape. The first linear portion 91 of the locked portion 83 is formed as a groove whose width dimension value is greater than its depth dimension value. More specifically, the cross section (cross section taken along a plane perpendicular to the longitudinal direction) of the first linear portion 91 is formed in a rectangular shape. The second linear portion 93 of the locked portion 83 is also formed as a groove whose width dimension value is greater than its depth dimension value. The cross section shape of the second linear portion 93 is the same as the cross section shape of the first linear portion 91.

[0090] Furthermore, the second linear portion 93 extends along the circumference of the inner surface of the cylindrical portion 79, and therefore is more accurately an arc-shaped portion 93. The outer diameter of the protrusion 87 is approximately equal to the width of the first linear portion 91 and the width of the second linear portion 93. The height of the protrusion 87 is smaller than the depth of the first linear portion 91 and the depth of the second linear portion 93.

[0091] Furthermore, a low, cylindrical through-hole 95 is formed at the end (the end on the opening 85 side) of the first linear portion 91. Furthermore, a chamfered portion 97 is formed at the end (the end on the opening 85 side) of the inner surface of the cylindrical portion 79. As a result, the end of the inner surface of the cylindrical portion 79 has a tapered surface resembling the side of a truncated cone. Due to the tapered surface, the inner diameter of the cylindrical portion 79 is largest at the end on the opening 85 side and gradually decreases with increasing distance from the opening 85. The through-hole 95 and the portion near the through-hole 95 of the first linear portion 91 overlap the chamfered portion 97.

[0092] Here, the operation of installing the light emitting device cover 71 on the light emitting device 73 will be described. In the initial state, as shown in Figures 15, 16, 17(a), and 18(a), the light emitting device cover 71 is separated from the light emitting device 73. Also, in the initial state, the positions of the protrusion 87 of the locking portion 76 and the first linear portion 91 of the locked portion 83 (the positions in the circumferential direction of the base end portion 75 and the cylindrical portion 79) are aligned with each other. In the initial state, the light emitting device cover 71 is moved linearly relative to the light emitting device 73 as shown by arrow A1 in Figures 15 and 17(a). After the above movement is completed, the state shown in Figures 17(b), 18(b), and 18(d) is reached.

[0093] In the state shown in Figure 17(b) and Figure 18(b)(d), the light emitting device cover 71 is rotated relative to the light emitting device 73 as shown by arrow A2 in Figures 15 and 17(a). When this rotation is completed, the state shown in Figures 17(c) and 18(c)(e) is reached, and the installation of the light emitting device cover 71 on the light emitting device 73 is completed. Note that the light emitting device cover 71 installed on the light emitting device 73 can be removed by performing the operation reverse to the installation operation described above.

[0094] Next, the relationship between the cover 71 of the light emitting device and the operation switch 99 when the operation switch 99 is provided in the base end portion 75 of the light emitting device 73 will be described with reference to Fig. 19. The operation switch 99 is formed in an oval shape, and two operation switches 99 are provided, which protrude slightly from the base end portion 75. The operation switches 99 are also elongated in the circumferential direction of the base end portion 75, and are spaced apart from each other in the circumferential direction of the base end portion 75.

[0095] A pair of "U"-shaped through-holes 101 are formed in the cylindrical portion 79 of the light-emitting device cover 71 where the operation switch 99 is located, and the portion of the cylindrical portion 79 located inside the "U" of the through-holes 101 forms a pressing portion 103. By forming the "U"-shaped through-holes 101, the pressing portion 103 has a cantilever shape, and can be deformed with a small force. This makes it easy to press the operation switch 99.

[0096] 19(b), the operation switch 99 slightly protrudes from the base end portion 75, but the operation switch 99 may not protrude from the base end portion 75 and may be flush with the surface of the base end portion 75. Also, the "U"-shaped through hole 101 may be changed to an oval through hole so that the entire operation switch 99 is exposed.

[0097] Next, the relationship between the cover 71 of the light-emitting device and the operation switch 99 (a relationship in a manner different from that shown in FIG. 19) when the operation switch 99 is provided on the base end portion 75 of the light-emitting device 73 will be described with reference to FIG. 20.

[0098] 20, two "I"-shaped through holes 105 are formed for one operation switch 99. The two "I"-shaped through holes 105 are located at both ends of the operation switch 99 in the width direction, and the area between the two "I"-shaped through holes 105 forms a pressing portion 107.

[0099] Next, with reference to Figure 22, we will explain the relationship between the cover 71 of the light-emitting device and the operation switch 99 (a relationship in a manner different from Figures 19 and 20) when the operation switch 99 is provided on the base end portion 75 of the light-emitting device 73.

[0100] In the embodiment shown in Fig. 22, one operation switch 99 can be pressed either as shown by arrow A3 or as shown by arrow A4. In the embodiment shown in Fig. 22, pressing portion 109 covers operation switch 99, and pressing portion 109 is connected to a portion of cylindrical portion 79 on the outside of pressing portion 109 by connecting portion 111. Note that reference numeral 113 in Fig. 22 denotes a through hole. In the embodiment shown in Fig. 22, connecting portion 111 and through hole 113 are connected like the outer periphery of an oval.

[0101] Next, a locked portion 83a according to a modified example will be described with reference to Fig. 21. The locked portion 83a shown in Fig. 21 differs from the locked portion 83 described above in that a pair of protrusions 115 is provided on the second linear portion 93, but is otherwise configured similarly to the locked portion 83 described above. The provision of the pair of protrusions 115 reduces the width dimension of a portion of the second linear portion 93. When the light emitting device cover 71 is installed on the light emitting device 73, the pair of protrusions 115 elastically deform, and when assembly is complete, the pair of protrusions 115 return to their original shape.

[0102] Furthermore, when the light emitting device cover 71 is attached to the light emitting device 73, the protrusions 87 abut against the pair of protrusions 115. This allows the assembled state to be firmly maintained.

[0103] The cover 71 of the light emitting device covers the base end portion 75 of the light emitting device 73 with the base end portion 74 inside, and is detachable from the light emitting device 73. This allows the appearance of the light emitting device 73 to be easily changed, and one light emitting device 73 can be reused depending on various situations.

[0104] Furthermore, the light emitting device cover 71 is moved from a pre-assembly state in the extension direction of the central axis relative to the light emitting device 73. When this movement is completed, the base end portion 75 of the light emitting device 73 enters the cylindrical portion 79 and the locked portion 83 engages with the locking portion 76. Furthermore, by rotating the light emitting device cover 71 by a predetermined angle relative to the base end portion 75 of the light emitting device 73 around the central axis as the rotation center, the locked portion 83 is locked with the locking portion 76.

[0105] This allows the light emitting device cover 71 to be attached to the light emitting device 73 by a simple operation of linear movement and subsequent rotation, and allows the light emitting device cover 1 to be replaced in a short time.

[0106] Furthermore, in the light emitting device cover 71, the locking portion 76 is configured with a protrusion 87, so the configuration of the locking portion 76 is simplified. Furthermore, the locked portion 83 is formed with an "L"-shaped notch 89, so the configuration of the locked portion 83 is also simplified. This allows the light emitting device cover 71 to be attached to the light emitting device 73 by a simple operation of linear movement and subsequent rotation.

[0107] Furthermore, when the light-emitting device cover 71 is attached to the light-emitting device 73, the light-emitting device cover 71 is attached to the base end portion 75 of the light-emitting device 73 with a biasing force. This allows the light-emitting device cover 71 to be attached to the light-emitting device 73 without any rattle.

[0108] Incidentally, the bottom wall portion 81 may be removed from the light-emitting device cover 71, and the light-emitting device cover may be configured with only the cylindrical portion 79, as shown in FIG. 23 . If the base end portion 75 of the light-emitting device 73 is formed in a columnar shape other than a cylinder, the cylindrical portion 79 may be formed in a tubular shape other than a cylinder to match the shape of the base end portion 75. For example, the cylindrical portion 79 may be formed in an elliptical tubular shape, or in a polygonal tubular shape such as a regular square or regular hexagonal tubular shape. In this case, the light-emitting device cover 71 is attached to the light-emitting device 73 only by the linear movement described above. After the linear movement is completed, the light-emitting device cover 71 is attached to the light-emitting device 73 and fixed thereto, for example, by a snap fit method.

[0109] 24, a sheet-like member 117 having a pattern or a predetermined color may be wrapped around the outer periphery of the cylindrical portion 79. The sheet-like member 117 is attached to the cylindrical portion 79 using, for example, an adhesive. The sheet-like member 117 can be easily attached to the cylindrical portion 79 and can also be easily peeled off from the cylindrical portion 79.

[0110] 25, an elastic body 119 made of rubber or synthetic resin may be provided on the inner peripheral surface of the cylindrical portion 79. When the light emitting device cover 71 is installed on the light emitting device 73, the elastic body 119 elastically deforms and presses the base end portion 75 of the light emitting device 73, thereby eliminating rattle of the light emitting device cover 71. Instead of or in addition to providing the elastic body 119 on the cylindrical portion 79, the elastic body 119 may be provided on the outer peripheral surface of the base end portion 75.

[0111] 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 present embodiment. For example, the cover 71 of the light emitting device may be modified in the same manner as the cover 17 shown in Figures 9 to 13. [Explanation of symbols]

[0112] 1 Lighting device 3 Proximal part 5 Tip side part 15 Lighting attachment 17 Cover 17A, 17B Cover structure 19 Cover fixing material 23 sides 25 Cylindrical part 29 Male screw 31 Female screw 67 Pattern 71 Lighting equipment cover 73 Lighting equipment 75 Proximal part 76 Locking part 77 Tip side part 79 Cylindrical section 83 Locked part 85 Opening 87 Protrusion 89 "L" shaped notch 91 First linear section 93 Second linear section

Claims

1. The cover for the light emitting device is installed on a light emitting device having a tip end portion and a base end portion, and covers the base end portion by placing the base end portion inside, and is detachable from the light emitting device.

2. The locking member is configured to include a cylindrical portion and a locking portion. The base end portion of the light emitting device is formed in a cylindrical shape, and a locking portion is provided at the base end portion of the light emitting device, the central axis of the cylindrical portion and the central axis of the base end portion of the light emitting device are aligned with each other, and the opening of the cylindrical portion and the base end of the base end portion of the light emitting device are opposed to each other and are spaced apart from the light emitting device, and the light emitting device moves in the direction of extension of the central axis relative to the base end portion of the light emitting device, and when this movement is completed, the base end portion of the light emitting device enters the cylindrical portion and the locked portion engages with the locking portion, A cover for a light-emitting device as described in claim 1, which is configured to be installed on the light-emitting device by rotating the engaging portion to a predetermined angle relative to the base end portion of the light-emitting device with the central axis as the center of rotation while maintaining the engagement between the engaging portion and the engaged portion, so that the engaged portion is engaged with the engaging portion and installed on the light-emitting device.

3. The locking mechanism is configured to include a cylindrical portion, and the cylindrical portion is provided with a locking portion. The base end portion of the light emitting device is formed in a cylindrical shape, and a locking portion is provided at the base end portion of the light emitting device, the locking portion is configured by a protrusion provided at a location on the base end portion of the light emitting device near the tip end portion, the engaged portion is provided near the opening of the cylindrical portion and is configured with an "L"-shaped notch recessed from the inner surface of the cylindrical portion to the outer surface of the cylindrical portion, a first linear portion of the "L"-shaped notch extending in the direction of extension of the central axis of the cylindrical portion, and a second linear portion of the "L"-shaped notch extending in the circumferential direction of the cylindrical portion from the end of the first linear portion opposite the opening of the cylindrical portion, A cover for a light-emitting device as described in claim 1, wherein when installed at the base end portion of the light-emitting device, the protrusion is located at the end of the second linear portion of the engaging portion opposite the first linear portion, so that the engaging portion is engaged with the engaging portion.

4. A cover for a light-emitting device according to any one of claims 1 to 3, which, when installed on the light-emitting device, is installed on the base end side of the light-emitting device with a biasing force.

5. a cover for enclosing the distal end portion of the light emitting device and the proximal end portion inside the cover, and covering the proximal end portion; a cover fixing member that fixes the cover to the light emitting device by engaging with the cover and the light emitting device when the cover is temporarily installed on the light emitting device so as to place the base end portion inside and cover the base end portion; An attachment for a light emitting device having the above.

6. 6. The attachment for a light emitting device according to claim 5, wherein the cover is formed to have a cylindrical portion and is divided into a plurality of cover components along a surface extending in the direction of extension of a generatrix of the cylindrical portion.

7. The cover is configured to include a cylindrical portion, 6. The attachment for a lighting implement according to claim 5, wherein the outer diameter of the cylindrical portion varies smoothly and periodically in the direction of extension of the central axis of the cylindrical portion.

8. A male screw is provided on a part of the outer periphery of the cover, The cover fixing member is formed in an annular shape, and a female screw is provided on an inner periphery of the cover fixing member, An attachment for a light-emitting device described in any one of claims 5 to 7, which is configured so that when the cover is temporarily installed on the light-emitting device, the female thread of the cover fixing material is screwed into the male thread of the cover, thereby fixing the cover and the cover fixing material to the light-emitting device.

9. The attachment for a light emitting device according to claim 5 , wherein the cover is configured to include a cylindrical portion, and a pattern is formed on the cylindrical portion.

Images