TW201514421A - Coupling structure for coupling adjacent electrical devices, and signal display light - Google Patents

Abstract

Provided is a coupling structure (70) for coupling, via an outer top (11) and a waterproof cap (12), connection end sections (73) of a pair of adjacent electrical devices (1) lined up upon a reference axis (71), said connection end sections (73) having openings (72) formed therein. The outer top (11) includes: a connection section (75) for one side, fixed on the connection end section (73) of an electrical device (1X) on one side, so as to be relatively rotatable around the reference axis (71); a connection section (76) for the other side, connected to a connection end section (73) of an electrical device (1Y) on another side, so as to be detachable by relatively rotating around the reference axis (71); and a blocking section (11A) that blocks the openings (72). The blocking section (11A) has an exposure hole (11D) formed therein that exposes a connection terminal (77) of the electrical device (1X) on one side to the electrical device (1Y) on another side. The waterproof cap (12) seals between the electrical device (1X) on one side and the connection section (75) for one side.

Description

Connection structure and signal display lamp for connecting adjacent electrical machines

This invention relates to a connection structure for connecting adjacent electrical devices and a signal display lamp to which the connection structure is applied.

An example of an electric device and a signal display lamp is the optical display device proposed in Patent Document 1 below, which includes a light-emitting diode substrate and a case in which the substrate is housed. A plurality of light source sections composed of LEDs are disposed on the substrate. The casing includes a base portion having a bottomed cylindrical shape, and three lid members constituting a light-transmissive cylindrical shape. The cover systems are connected to the base portion in a three-stage laminate. Each of the lid bodies has an annular top wall on the inner peripheral side, and the top wall has a pair of protruding portions facing each other. A slit is formed in a pair of protruding portions facing each other toward the front end portion. The substrate housed in the casing is fitted to the inside of each of the lids and fitted to each of the slits of the pair of projections. The light emitted from each of the light source sections of the substrate is released to the outside through the cover around the light source section.

[Previous Technical Literature] [Patent Document]

Patent Document 1: New Style Registration Japanese No. 3169445

When it is intended to be used in various environments by connecting a plurality of electrical devices in a connected structure, it is expected to improve the preventability of the connection structure in order to prevent electrical equipment failure due to water immersion. Furthermore, it is also expected to improve the easiness of connecting electrical devices or separating them via a connected structure.

Here, the object of the invention is mainly to provide a connection structure for connecting the adjacent electric devices to provide a connection structure capable of improving waterproofness.

Further, another object of the invention is to provide a connection structure capable of improving the ease of connection or separation of electrical devices.

Still another object of the invention is to provide a signal display lamp suitable for such a joint configuration.

The invention described in claim 1 is a connection structure for connecting adjacent electric devices, and is configured to have an opening portion (72) through the connection member (11) and the sealing member (12). The connection end portion (73) and the plurality of electrical devices (1) arranged on the common reference axis (71), the adjacent one of the connection structures of the connection ends of the electrical device (70) The connecting member includes a one-side connecting portion (75) that is located in a pair of the electrical devices that are located relative to the connecting member The connection end portion of one of the one side electric devices (1X) is fixed so as not to be rotatable relative to the reference axis; the other side connection portion (76) is paired with the pair of electric machines The connecting end portion of the other side electric device (1Y) on the other side of the connecting member is connected to be detachably mounted by relative rotation about the reference shaft; and the closing portion is A blocking portion (11A) that blocks each of the openings of the one-side electric device and the other-side electric device is formed with a connection terminal that is electrically connected to the other-side electric device in the one-side electric device ( 77) an exposure hole (11D) exposed on the other side of the electric device side, wherein the sealing member is interposed between the one side electric device and the one side connection portion along a periphery of an opening of the one side electric device And sealing between the one side electrical device and the one side connecting portion.

Further, in the item, the numerical code in parentheses indicates the reference symbol of the corresponding constituent element in the embodiment described later, but the invention is not limited by the reference symbols.

According to this configuration, in the connection structure for connecting the connection end portions in which the openings are formed in the pair of electric devices, one of the connection members is fixed to the connection end of the one side electric device. The department does relative rotation. Here, "fixed into a relative rotation" means that when the lower side is not able to rotate the connecting end portion relative to the predetermined force, the one side connecting portion is connected to the connecting end portion under a predetermined force. When the relative rotation is performed, the one side connecting portion and the connecting end portion are combined so that at least one of the one side connecting portion and the connecting end portion is not broken. Due to one side connection Since the portion is fixed to the connection end portion so as not to be relatively rotatable, the connection member is integrated with one of the electric devices.

Further, in the connecting member, the other side connecting portion is connected to be attachable and detachable by relatively rotating the connecting end portion of the other side electric machine.

According to the above, when the one-side electric device and the other-side electric device are relatively rotated, the other-side electric device can be easily attached and detached to the connecting member in a state in which the connecting member is integrated with one of the electric devices. One side of the electrical equipment is added to the other side of the electrical equipment, or the additional equipment is removed.) That is, it is possible to improve the ease with which electrical devices are connected or separated from each other.

Further, in the connection member, the closing portion blocks the opening of each of the one side electric device and the other side electric device. Therefore, in the connection structure, it is possible to improve the waterproofness in a state in which one of the electric devices and the other electric device are connected.

Further, in the connection structure, the sealing member seals between the one side electric device and the one side connecting portion of the connecting member, and in the closing portion, the exposed terminal of the one side electric device is exposed at the required minimum limit. Since the hole is formed, it is possible to improve the waterproofness around the connection end portion of the one-side electric device in the state in which the other side of the electric machine is separated.

The invention according to claim 2, wherein the one-side connecting portion is provided with the connecting end portion of the one-side electric device, and the one-side connecting portion is restricted. The above-mentioned connecting end portion of the one side electric device is relatively rotated Engagement part (55).

According to this configuration, the one side connecting portion of the connecting member can be fixed by the engaging portion so that the connecting end portion of the one side electric device cannot be surely rotated relative to each other.

The invention of claim 3 is the connection structure according to claim 1 or 2, wherein at least one of the plurality of electrical devices is a signal display lamp.

The invention described in claim 4 is connected to another electric device by the connection structure as set forth in any one of claims 1 to 3.

That is, as in the case of the claims 3 and 4, any one of the electrical devices connected by the connection structure may be a signal display lamp.

1‧‧‧Electrical machines

1X‧‧‧one side electrical machine

1Y‧‧‧Other side electrical machine

11‧‧‧Outer top

11A‧‧‧The Department of Occlusion

11D‧‧‧Exposed hole

12‧‧‧Waterproof cover

55‧‧‧Clock Department

70‧‧‧Link construction

71‧‧‧ reference axis

72‧‧‧ openings

73‧‧‧Connecting end

75‧‧‧one side connection

76‧‧‧The other side connection

77‧‧‧Connecting terminal

Fig. 1 is a front elevational view of an electric machine 1 relating to an embodiment of the invention.

Fig. 2 is a central longitudinal sectional view showing the side of the electric machine 1 in the posture of Fig. 1.

Fig. 3A is a front view of the components constituting the electric machine 1.

Fig. 3B is a front view of the components (parts not shown in Fig. 3A) constituting the electric machine 1.

4A is an exploded perspective view of the electric machine 1.

Figure 4B is an exploded perspective view of the electrical machine 1, showing that Figure 4A has no table Parts shown.

Fig. 5A is an exploded perspective view of the electric machine 1 as seen from a direction different from that of Fig. 4A.

Fig. 5B is an exploded perspective view of the electric machine 1, showing parts not shown in Fig. 5A.

Fig. 6 is a perspective view of the lens 3 constituting the electric machine 1.

FIG. 7 is a plan view of the lens 3.

FIG. 8 is a bottom view of the lens 3.

FIG. 9 is a left side view of the lens 3.

FIG. 10 is a rear view of the lens 3.

Figure 11 is a cross-sectional view taken along line A-A of Figure 7.

Fig. 12 is a perspective view showing an important part of a part of the lens 3 in a cross section.

Fig. 13 is a perspective view showing an important part of a part of the lens 3 in a cross section.

Fig. 14A is a cross-sectional view of two lenses 3 to be joined.

Fig. 14B is a cross-sectional view of three lenses 3 to be joined.

Figure 15 is a perspective view of the electrical machine 1 to be joined.

Fig. 16 is a schematic longitudinal sectional view showing an electric machine 1 to be connected.

Fig. 17 is a perspective view of the lens 3 of the modification.

Fig. 18 is a plan view of a lens 3 according to a modification.

Hereinafter, the embodiment of the invention will be specifically described with reference to the drawings.

Fig. 1 is a front elevational view of an electric machine 1 relating to an embodiment of the invention. Fig. 2 is a central longitudinal sectional view showing the side of the electric machine 1 in the posture of Fig. 1. 3A and 3B are front views of the components constituting the electric machine 1. 4A and 4B are exploded perspective views of the electric machine 1. 5A and 5B are exploded perspective views of the electric device 1 as seen from a direction different from that of Figs. 4A and 4B.

Referring to Fig. 1 and Fig. 2, an electric device 1 used in an embodiment of the invention, for example, a signal display lamp used in a manufacturing site of a factory, is formed in an elongated cylindrical shape. The posture of the electric machine 1 at the time of use can be arbitrarily set depending on the use conditions. However, in the following, for the sake of convenience, the upper and lower sides of the paper in the respective drawings of FIGS. 1 to 5B are aligned with the longitudinal direction of the electric device 1, and the electric machine 1 at the time of the vertical arrangement is used as a reference. . Specifically, in each of FIGS. 1 to 5B, the upper side of the paper surface is referred to as the upper side of the electric device 1, and the lower side of the paper surface is referred to as the lower side of the electric machine 1.

3A to 5B, the electric device 1 includes an LED mounting substrate 2, a lens 3, a main body 4 (lower blocking member), a flat plate 5, a bracket 6, a waterproof ring 7, a waterproof sheet 8, and a waterproof ring 9 (lower side elastic) Member), outer lens 10 (hollow member), outer top portion 11 (upper side blocking member, joint member), waterproof cover portion 12 (upper elastic member, sealing member), head cover 13, and waterproof ring 18. Hereinafter, each part will be described separately.

As shown in FIG. 4B and FIG. 5B, the LED mounting substrate 2 has a substantially rectangular thin plate shape which is long in the vertical direction. The symbol L is indicated in the longitudinal direction (up-and-down direction) of the LED mounting substrate 2, the symbol S is marked on the short side of the LED mounting substrate 2, and the symbol T is indicated in the thickness direction of the LED mounting substrate 2. The size of the LED mounting substrate 2 in the longitudinal direction L is slightly smaller than the dimension in the longitudinal direction of the electrical device 1 (see FIG. 2). The LED mounting substrate 2 has a surface 2A and a back surface 2B which constitute two of the thickness directions T. For the sake of convenience, the surface which appears to be the largest in Fig. 4B is regarded as the surface 2A, and the surface which appears to be the largest in Fig. 5B is regarded as the back surface 2B. The longitudinal direction L and the short side direction S are orthogonal on the same plane parallel to the surface 2A and the back surface 2B. The thickness direction T is orthogonal to both the longitudinal direction L and the short side direction S. Further, the thickness direction T is also the depth direction F of the electric device 1 (see FIG. 2), and the short side direction S is also the left-right direction G of the electric device 1 (see FIG. 1).

In the front surface 2A and the back surface 2B, an LED (light emitting diode) 14 of a light-emitting element is mounted at a position shifted from the center position 2C toward the one end portion 2D side in the short-side direction S. The LED 14 mounted on the front surface 2A and the LED 14 mounted on the back surface 2B are located at the same position in the short-side direction S (from the edge 2E of the end portion 2D toward the center position 2C side) (refer to FIG. 4B and Figure 5B).

On the surface 2A and the back surface 2B, a plurality of LEDs 14 are mounted in a row along the longitudinal direction L. Specifically, the four LEDs 14 arranged at equal intervals along the longitudinal direction L constitute one group 15 , and the five groups 15 are arranged at equal intervals along the longitudinal direction L. That is, in the LED installation In the substrate 2, a plurality of LEDs 14 of a plurality of arrays are mounted at a predetermined interval in the longitudinal direction L. Further, the interval K1 between the adjacent LEDs 14 in each group 15 is narrower than the interval K2 between the adjacent groups 15 (refer to FIG. 4B). Furthermore, each of the LEDs 14 is in the form of a small piece. Then, in each of the groups 15, the LEDs 14 of the surface 2A and the LEDs 14 of the back surface 2B are arranged at the same position in the longitudinal direction L.

The five groups 15 are disposed on the surface 2A and the back surface 2B, respectively, in a region of one-third of the one side (upper side) of the longitudinal direction L. On the surface 2A and the back surface 2B, the five groups 15 are sequentially distinguished from the top into the first group 15A, the second group 15B, the third group 15C, the fourth group 15D, and the fifth group 15E, and the first group 15A is It is disposed at the upper end of the surface 2A and the back surface 2B.

In the surface 2A and the back surface 2B, the LED 14 is not disposed in a region which is slightly more than one-fourth of the other side (lower side) in the longitudinal direction L, and the terminal 16 is attached to the region of the surface 2A. A cable 17 for controlling the supply of signals or power is connected to the terminal 16. The terminal 16 and each of the LEDs 14 are electrically connected. Each of the LEDs 14 emits light by being supplied with a control signal or electric power from the cable 17 via the terminal 16.

Next, the lens 3 will be described. In the description of the lens 3, the posture of the lens 3 at the time of assembling each of the electric machines 1 in FIGS. 1 to 5 is used as a reference.

Referring to Fig. 2, the lens 3 is provided in the same number (i.e., five) as the group 15 of the above-described LEDs 14, and the shape (shape and size) of each lens 3 is the same. The five lenses 3 and the up and down direction (LED mounting substrate The long side direction L) of 2 is connected and used. In other words, each of the lenses 3 is used by connecting the other lenses 3 of the same shape in the longitudinal direction L, and a plurality of (five) lenses 3 are successively provided in the electric device 1. The five lenses 3 are sequentially distinguished from the top into the first lens 3A, the second lens 3B, the third lens 3C, the fourth lens 3D, and the fifth lens 3E. The form of each lens 3 is the same, but it may be colored by a different color. For example, even if the first lens 3A is red, the second lens 3B is orange, the third lens 3C is green, the fourth lens 3D is blue, and the fifth lens 3E is white. . Further, even if the lenses 3 are made of the same color, the illuminating colors of the LEDs 14 that emit light toward the respective lenses 3 may be different for each lens 3.

Figure 6 is a perspective view of the lens 3. FIG. 7 is a plan view of the lens 3. FIG. 8 is a bottom view of the lens 3. FIG. 9 is a left side view of the lens 3. FIG. 10 is a rear view of the lens 3. Figure 11 is a cross-sectional view taken along line A-A of Figure 7. 12 and FIG. 13 are perspective views showing important portions of a part of the lens 3 in a cross section.

Hereinafter, each lens 3 will be described with reference to FIGS. 6 to 13 . Further, in FIGS. 6 to 13 , in the drawings other than FIG. 7 , the LED mounting substrate 2 is not shown for the sake of convenience.

The lens 3 has a substantially cylindrical shape. The direction extending through the central axis (not shown) passing through the center of the circle of the lens 3 is referred to as the axial direction X of the lens 3. The lens 3 has a predetermined length in the axial direction X. As shown in Fig. 7, the outer side profile 3R of the lens 3 when viewed from the axial direction X becomes slightly circular. Hereinafter, the circumferential direction P and the radial direction R of the lens 3 will be described.

The entire lens 3 is made of a resin which is transparent (including translucent or colored transparent, the same applies hereinafter) as a material, and is molded by using a film tool by injection molding or the like. Each part of the lens 3 (described later) is integrated. An acrylic resin is mentioned as a resin here.

The lens 3 mainly includes a light guiding radiation portion 20, an auxiliary lens portion 21, and a supporting portion 22 (refer to a portion coated with dots in Fig. 7).

The light guiding radiation portion 20 is a cylindrical shape (in detail, a substantially cylindrical shape) constituting most of the outer side profile 3R of the lens 3. Therefore, the circumferential direction of the light guiding radiation portion 20 is the same as the circumferential direction P, and the radial direction of the light guiding radiation portion 20 is the same as the radial direction R described above. The slit portion 23 is formed at one position on the circumference of the light guiding radiation portion 20. The slit portion 23 cuts the light guiding radiation portion 20 in the axial direction X, and cuts one position on the circumference of the light guiding radiation portion 20 along the axial direction X. Therefore, the cross section of the light guiding radiation portion 20 when the cutting plane orthogonal to the axial direction X is cut is strictly formed in a slightly C shape in which the slit portion 23 is interrupted. One of the pair of facing end faces of the segment slit portion 23 is formed in the light guiding radiation portion 20, and these opposing end faces are referred to as the incident surface 24. One of the pair of incident surfaces 24 (the right side in FIG. 7) is referred to as an incident surface 24A, and the other (left side in FIG. 7) is referred to as an incident surface 24B. The incident surfaces 24 are opposed to each other with the slit portion 23 interposed therebetween. Even if these incident surfaces 24 are flat surfaces extending in parallel, even if they are as shown in FIG. 7, they may protrude in a slightly arc shape toward each other.

In the light guiding radiation portion 20, a portion on the side of each incident surface 24A (referred to as an incident portion 28) is located inside the outer side contour 3R of the lens 3 (on the side of the center of the circle of the lens 3), and does not constitute the outer contour 3R. In the light guide radiation department The outer peripheral surface 20A of the outer peripheral surface 20A and the area other than the incident portion 28 constitute a large part of the outer contour 3R.

A plurality of convex portions 25 are integrally provided on the inner circumferential surface 20B of the light guiding radiation portion 20. These convex portions 25 are formed in a rib shape that protrudes toward the center side of the circle of the lens 3 (inward of the radial direction R) and linearly extends along the axial direction X. The cross-sectional shape of each convex portion 25 at the time of cutting the cut surface orthogonal to the axial direction X differs depending on the position of the circumferential direction P in the inner circumferential surface 20B. Specifically, in the light guiding radiation portion 20, a position shifted from the slit portion 23 by 180 degrees in the circumferential direction P is referred to as an opposite position 20C, and a region from each of the incident surfaces 24 to the opposite position 20C is close to the incident surface. In the order of 24, 3 is divided into the first region 20D, the second region 20E, and the third region 20F. The cross-sectional shape of the convex portion 25 in the first region 20D is a slightly triangular shape. The cross-sectional shape of the convex portion 25 in the third region 20F is a slightly semicircular shape. The cross-sectional shape of the convex portion 25 in the second region 20E is also similar to any of the convex portion 25 in the first region 20D and the convex portion 25 in the third region 20F.

The auxiliary lens portion 21 is provided to cover the slit portion 23 from the outside in the radial direction R. The auxiliary lens portion 21 is flat in the radial direction R and extends in a strip shape in the axial direction X (see FIG. 10). The size of the auxiliary lens portion 21 in the axial direction X is slightly smaller than the size of the light guiding radiation portion 20 in the axial direction X (see FIGS. 9 and 10). In the auxiliary lens portion 21, the outer side surface 21A in the radial direction R and the inner side surface 21B in the radial direction R protrude in an arc shape in a direction in which they are separated from each other. Therefore, the cross section of the auxiliary lens portion 21 when the cut surface orthogonal to the axial direction X is cut is oriented toward the circumference with the thickness in the radial direction R To the two outer sides of P, gradually become smaller. In the auxiliary lens portion 21, the end faces 21C on both sides in the circumferential direction P intersect the outer side surface 21A and the inner side surface 21B, respectively, and have a flat surface extending in the axial direction X. The outer side surface 21A constitutes a part of the outer side profile 3R of the lens 3.

In the inner side surface 21B, a pair of rail portions 26 extending in parallel along the axial direction X are integrally provided at the center in the circumferential direction P. The size of each of the rail portions 26 in the axial direction X is smaller than the size of the inner side surface 21B in the axial direction X (refer to FIG. 11). The interval between the pair of rail portions 26 is almost the same as the thickness of the LED mounting substrate 2 (the dimension in the thickness direction T). A movement restraining portion 27 is provided between the pair of rail portions 26. The movement suppressing portion 27 is formed in a groove shape that is open inside the radial direction R in the inner side surface 21B of the auxiliary lens portion 21, and extends in the axial direction X.

The lens 3 includes a coupling portion 29 that connects the light guiding radiation portion 20 and the auxiliary lens portion 21. The connecting portion 29 has a plate shape that is thin in the axial direction X (see FIG. 9). The connection portion 29 is disposed at a position slightly offset from the center of the light guiding radiation portion 20 in the axial direction X (the center of the entire lens 3) to the upper side (see FIGS. 9 and 10). In the lens 3, the position of the joint portion 29 in the axial direction X is an alignment position (boundary) Y (see FIG. 10) of the two molds when the lens 3 is formed in two molds (illustrated). Since the alignment position Y deviates from the center of the lens 3, when the two molds are separated after the formation of the lens 3, since the lens 3 must be located on the determined mold, the lens 3 after the forming It is convenient to dispose of.

The connecting portion 29 is viewed from the axial direction X in the circumferential direction P Both outer sides of the slit portion 23 and the movement suppressing portion 27 are stretched between the outer peripheral surface 20A of the light guiding radiation portion 20 and the inner side surface 21B and the end surface 21C of the auxiliary lens portion 21. The outer circumferential surface 29A of the coupling portion 29 in the radial direction R constitutes one of the outer side contours 3R of the lens 3, and smoothly connects the outer circumferential surface 20A of the light guiding radiation portion 20 and the outer surface 21A of the auxiliary lens portion 21.

The support portion 22 is housed inside the light guiding radiation portion 20. The support portion 22 has a cylindrical shape. Strictly speaking, the support portion 22 has a slightly cylindrical shape with a smaller diameter than the light guiding radiation portion 20, and its central axis extends along the axial direction X. Further, the central axis (circle center) of the support portion 22 does not coincide with the central axis of the light guiding radiation portion 20 (strictly speaking, the outer side profile 3R of the lens 3), and slightly deviates from the central axis of the light guiding radiation portion 20 to the opposite position. 20C side. The size of the support portion 22 in the axial direction X is larger than the size of the light guiding radiation portion 20 in the axial direction X. Therefore, one end portion (upper end portion) 22C of the support portion 22 in the axial direction X protrudes to the outer side (upper side) from the light guiding radiation portion 20, and the other end portion (lower end portion) 22D of the support portion 22 in the axial direction X is larger. The light guiding radiation portion 20 protrudes to the outside (lower side) (see FIGS. 9 and 10). The upper end surface of the support portion 22 is referred to as an end side abutment end surface 22E provided on one end side of the axial direction x in the lens 3, and the lower end surface of the support portion 22 is referred to as an axial direction X in the lens 3. The other end side of the other end side abuts against the end surface 22F (see FIGS. 9 and 10). Both the one end side abutting end surface 22E and the other end side abutting end surface 22F are flat in a direction orthogonal to the axial direction X.

The slit portion 30 is formed at one position on the circumference of the support portion 22. The slit portion 30 cuts the support portion 22 in the axial direction X and cuts the support along the axial direction X. One on the week of the section 22. Therefore, the cross section of the support portion 22 when the cut surface orthogonal to the axial direction X is cut is strictly formed in a slightly C shape in which the slit portion 30 is interrupted. In the circumferential direction P, the slit portion 30 and the slit portion 23 of the light guiding radiation portion 20 are located at the same position. Therefore, the slit portion 30 and the slit portion 23 are located on the same straight line extending in the radial direction R (in detail, along a straight line of the flat surface M described later).

The support portion 22 has an outer peripheral surface 22A and an inner peripheral surface 22B.

The outer peripheral surface 22A is subjected to a light-shielding treatment throughout the entire circumference. Specifically, the outer peripheral surface 22A is provided with the rib-shaped convex portion 31 extending along the axial direction X, and the plurality of convex portions 31 are arranged on the outer peripheral surface 22A so as to be arranged in the circumferential direction of the outer peripheral surface 22A. The whole direction of the week. When the cut surface orthogonal to the axial direction X is cut, the cross section of each convex portion 31 forms a sharp triangular shape toward the outside. Further, as another example of the light-shielding treatment of the outer peripheral surface 22A, the outer peripheral surface 22A may be subjected to a biting process or the like.

A plurality of (here, four) positioning ribs 32 are provided on the inner circumferential surface 22B. The four positioning ribs 32 are arranged at equal intervals in the circumferential direction of the inner circumferential surface 22B. The positioning rib 32 closest to the slit portion 30 is located approximately 45 degrees from the circumferential direction of the slit portion 30 in the inner peripheral surface 22B. Each of the positioning ribs 32 is a quadrangular prism elongated in the axial direction X, and the front end portion 32A is provided on one end side of the lens 3 in the axial direction X (one end side abutting end surface 22E), strictly speaking, one end side The abutting end surface 22E protrudes further outward (upper side) (refer to FIG. 6).

Further, the above-described shading treatment is performed even if it is not the outer peripheral surface 22A. The inner peripheral surface 22B may be applied to both of the outer peripheral surface 22A and the inner peripheral surface 22B.

The lens 3 includes a coupling portion 33 that connects the light guiding radiation portion 20 and the support portion 22 . The connecting portion 33 has a thin plate shape having the same thickness as the connecting portion 29, and is located at the same position as the connecting portion 29 in the axial direction X. The connecting portion 33 is formed in a substantially U-shape that is open on the side of the slit portion 23 of the light guiding radiation portion 20 as viewed in the axial direction X. The connecting portion 33 is configured to block the inner circumferential surface 20B of the light guiding radiation portion 20 (strictly speaking, the inner circumferential surface 20B of the second region 20E and the third region 20F), and the outer circumferential surface 22A of the support portion 22 In the meantime, it is placed between the inner circumferential surface 20B and the outer circumferential surface 22A. Since the connection portion 33 is not connected to the inner circumferential surface 20B of the first region 20D, the gap 34 is defined between the connection portion 33 and the inner circumferential surface 20B of the first region 20D as viewed from the axial direction X. The gap 34 is exposed to the outside from both sides of the lens 3 in the axial direction X (see FIGS. 7 and 8).

Further, the inner peripheral surface 22B of the support portion 22 is provided with a substantially circular blocking portion 35 that blocks most of the hollow portion of the support portion 22 when viewed from the axial direction X. The closing portion 35 has a thin plate shape having the same thickness as the connecting portion 29 and the connecting portion 33, and is located at the same position as the connecting portion 29 and the connecting portion 33 in the axial direction X. The root portion of each of the positioning ribs 32 (the lower end portion opposite to the front end portion 32A) is connected to the upper surface of the closing portion 35 (see FIGS. 12 and 13).

A notch groove 36 that linearly extends in the radial direction of the support portion 22 is continuously formed in the blocking portion 35 from the slit portion 30 of the support portion 22. The notch groove 36 penetrates the occluding portion 35 in the thickness direction and extends to occlusion The center of the circle of the portion 35 is away from the position of the slit portion 30 (the position opposite to the center of the circle of the closing portion 35 from the side of the slit portion 30). Among the portions of the occluding portion 35 that partition the notch groove 36, the portion farthest from the slit portion 23 (the groove bottom of the notch groove 36) is referred to as a bottom surface 36A. The direction in which the notch groove 36 extends from the slit portion 30 toward the bottom surface 36A is referred to as the depth direction D as viewed in the axial direction X, and the direction orthogonal to the depth direction D is referred to as the width direction W. The bottom surface 36A is flat along the width direction W. The bottom surface 36A is provided on the opposite side of the auxiliary lens portion 21 in the depth direction D (the opposite position 20C side of the light guiding radiation portion 20). The slit portion 23 and the slit portion 30 and the notch groove 36 are located on the same straight line (a straight line along the flat surface M).

As shown in FIGS. 12 and 13, the lens 3 includes a pair of insertion space forming members 40 in the closing portion 35. Further, in FIGS. 12 and 13, for the sake of convenience, the cross section or the portion corresponding to the end surface (non-cross section) is filled with dots.

The pair of insertion space forming members 40 have a rail shape extending in the axial direction X, and a slight central portion of the individual axial directions X is coupled to the closing portion 35.

Referring to Fig. 7, the pair of insertion space forming members 40 are viewed from the axial direction X, and are disposed opposite to each other in the width direction W so as to sandwich the side of the bottom surface 36A of the notch groove 36 from the width direction W (strictly speaking, the center of the circle of the closing portion 35) ). The pair of insertion space forming members 40 are opposed to each other in a non-contact state. The closing portion 35 and the connecting portion 33 (including the portion of the supporting portion 22 that is connected to the closing portion 35 and the connecting portion 33) are connected to the pair of insertion space forming members 40 and the light guiding radiation portion 20 (see FIG. 11). Axis direction Each of the insertion space forming members 40 at the time of X viewing has a rectangular shape in which the long sides (flat in the width direction W) are formed in the depth direction D.

The pair of insertion space forming members 40 are disposed between the opposing faces 40A of each other, and a gap called the insertion space 41 is partitioned. The insertion space 41 is exposed to the outside from both sides of the lens 3 in the axial direction X (see FIGS. 7 and 8). The insertion space 41 is formed inside the support portion 22 when viewed from the axial direction X. The cross section of the insertion space 41 when the cut surface orthogonal to the axial direction X is cut is flat in the width direction W.

Referring to FIGS. 9 to 11, one end portion 40B (upper end portion) of the pair of insertion space forming members 40 in the axial direction X protrudes more than the one end side abutting end surface 22E of the support portion 22 to the outer side of the axial direction X (upper side) ). The other end portion 40C (lower end portion) of the pair of insertion space forming members 40 in the axial direction X protrudes only toward the outer side (lower side) in the axial direction X than the other end side abutting end 22F of the lower surface of the support portion 22. That is, the one end portion 40B protrudes more than the other end portion 40C to the outer side of the support portion 22.

Referring to Fig. 11, in the opposite surface 40A of each insertion space forming member 40, an inclined surface 40D which is extended to be inclined in the axial direction X and rounded at the end portion is formed at the end portion on the other end portion 40C side. In the opposing surface 40A of each insertion space forming member 40, a flat surface 40E along the axial direction X is formed at an end portion on the one end portion 40B side. At the upper end of the flat surface 40E, a convex portion 40F that is slightly protruded toward the insertion space forming member 40 on the other side is provided. The dimension in the width direction W of the insertion space 41 is almost the same as the dimension in the thickness direction T of the LED mounting substrate 2 (see FIG. 7). However, strictly speaking, the lens 3 exists in a single state (not with The dimension of the width direction W of the insertion space 41 in the state in which the other lenses 3 are connected is slightly larger than the dimension of the thickness direction T of the LED mounting substrate 2. Further, the dimension of the width direction W of the insertion space 41 is narrower on the one end portion 40B side than on the other end portion 40C side. The outer surface (the surface opposite to the opposing surface 40A) of the one end portion 40B of each of the insertion space forming members 40 is formed with a concave portion 40G whose end portion 40B (portion on the convex portion 40F side) is gradually tapered.

Referring to Fig. 8, in association with each insertion space forming member 40, the lens 3 includes a reinforcing portion 42. The reinforcing portion 42 is provided one for each insertion space forming member 40. Each of the reinforcing portions 42 has a plate shape that is thin in the longitudinal direction (depth direction D) of the insertion space forming member 40 when viewed from the axial direction X, and extends in the axial direction X (see FIG. 5A). Further, for the sake of convenience, a diagram in which the illustration of the reinforcing portion 42 is omitted will be omitted.

Referring to Fig. 11, each reinforcing portion 42 constitutes the other end portion 40C of the corresponding insertion space forming member 40 (strictly speaking, a position slightly closer to the center in the depth direction D of the portion closer to the other end portion 40C than the closing portion 35, Referring to Fig. 8) and the triangular shape of the both sides of the closing portion 35. The other end portion 40C of the pair of insertion space forming members 40 in the axial direction X is reinforced by the reinforcing portion 42. Therefore, the other end portion 40C of each insertion space forming member 40 becomes difficult to flex (becomes difficult to shake) centering on the connection position of the closing portion 35 (in the case of the fulcrum position Q). In addition, since one end portion 40B of the pair of insertion space forming members 40 in the axial direction X is not reinforced, it is possible to elastically deform and oscillate around the fulcrum position Q (the position at which the blocking portion 35 is coupled).

As shown in FIG. 7 and FIG. 8, the lens 3 as described above is viewed from the axial direction X as a reference from the flat surface M of the slit center 23, the slit portion 30, the notch groove 36, and the center of the circle of the lens 3. Symmetrical shape.

At the time of assembling the lens 3, a plurality of (here, five) lenses 3 are arranged in the vertical direction in a state where the respective axial directions X are parallel (see FIGS. 3A, 4A, and 5A).

The connection of the adjacent lenses 3 will be described with reference to Figs. 14A and 14B.

As shown in FIG. 14A, in the adjacent two lenses 3, as an example, one end side of the support portion 22 of the second lens 3B on the lower side in FIG. 14A abuts the end surface 22E from the axial direction X and The other end side of the support portion 22 of the other lens 3 (first lens 3A) located on the upper side in Fig. 14A abuts against the end surface 22F. From this state, as shown by the blank arrow in FIG. 14A, the second lens 3B is brought close to the first lens 3A. Conversely, the first lens 3A may be close to the second lens 3B.

As a result of the approach of the first lens 3A and the second lens 3B, as shown in FIG. 14B, one of the second lenses 3B is inserted into one of the first lens 3A of the one end portion 40B of the insertion space forming member 40. Between the other end portions 40C of the axial direction X in the space forming member 40. Accordingly, the one end portions 40B are close to each other. Then, as shown in FIG. 14B, one end side contact end surface 22E of the support portion 22 of the second lens 3B abuts on the other end side of the first lens 3A (the other end side abutment end surface 22F of the support portion 22) ( When the surface contact is), the lenses 3 are connected to each other. to make. At this time, the front end portion 32A of each of the positioning ribs 32 on the inner side of the support portion 22 of the second lens 3B is engaged with the other end side of the connected first lens 3A (the inner peripheral surface 22B of the support portion 22). Similarly, when the second lens 3B and the third lens C are connected, as shown in FIG. 14B, the other end side of the second lens 3B abuts against one end of the end surface 22F and the third lens 3C (the other lens 3 to be connected). The side (one end side end face 22E) abuts (surface contact). Further, the front end portion 32A of each of the positioning ribs 32 of the third lens 3C is engaged with the other end side of the second lens 3B. Accordingly, the adjacent lens 3 can be connected in a state where the relative position is constant by the front end portion 32A of the positioning rib 32. Further, the flat end side abutting end surface 22E and the other end side end surface 22F abut against the support portion 22 of the lens 3 on the other side (the one end side abutting end surface 22E and the other end side abutting end 22F) . Accordingly, the support portion 22 of each lens 3 supports (positions) the other lenses 3 connected thereto from the axial direction X. That is, the support portion 22 can stabilize the relative positions of the adjacently connected lenses 3 with each other. At this time, the adjacent lenses 3 are coaxial and parallel.

Then, finally, the lenses 3 adjacent to each other in the first lens 3A to the fifth lens 3E are connected in the same manner, and as shown in FIG. 2, the five lenses 3 are integrated by interlocking. Among the five lenses 3 that are integrated, the insertion space 41 (five of which corresponds to the five lenses 3) that is partitioned between the pair of insertion space forming members 40 is arranged on the same straight line extending in the axial direction X, and Connected.

In this state, the LED mounting substrate 2 is inserted in a state in which the longitudinal direction L thereof coincides with the axial direction X (in a state of being parallel). The insertion space 41 of each lens 3 and at least a part of the LED mounting substrate 2 are contained (accommodated) in the insertion space 41 of each lens 3. When the relative positions of the LED mounting substrate 2 and the lenses 3 are appropriate (when finally determined), as shown in FIG. 7, the LED mounting substrate 2 is inserted into the slit portion along the flat surface M. 23. The slit portion 30 and the notch groove 36. At this time, not only the longitudinal direction L and the axial direction X are coincident, but also the short-side direction S of the LED mounting substrate 2 including the respective lenses 3 coincides with the depth direction D, the thickness direction T of the LED mounting substrate 2, and the width direction. W is consistent.

Further, in this state, as shown in FIG. 2, in the longitudinal direction L, the first group 15A of the LEDs 14 and the first lens 3A are located at the same position. Further, in the longitudinal direction L, the second group 15B of the LEDs 14 and the second lens 3B are located at the same position, the third group 15C and the third lens 3C are located at the same position, and the fourth group 15D and the fourth lens 3D are located at the same position. The fifth group 15E and the fifth lens 3E are located at the same position.

As shown in FIG. 7, all of the LEDs 14 in each of the groups 15 are disposed in the slit portion 23 of the light guiding radiation portion 20 in the lens 3 corresponding to (the same position in the longitudinal direction L). In the LED mounting substrate 2, each of the LEDs 14 on the front surface 2A is opposed to one of the pair of incident surfaces 24 (here, the incident surface 24A) with a gap interposed therebetween, and the LEDs 14 of the back surface 2B are opposed to each other. The other of the incident surfaces 24 (here, the incident surface 24B) is disposed opposite to each other with a gap interposed therebetween.

Further, in this state, the end portion 2D (in the short side direction S) on the side where the LED 14 is located in the LED mounting substrate 2, in each lens In the third portion, the support portion 22 and the light guiding radiation portion 20 protrude from the movement preventing portion 27 (the groove between the pair of guide rails 26) of the auxiliary lens portion 21, and are sandwiched by the pair of rail portions 26. Further, the end portion 2D abuts against the auxiliary lens portion 21 from the short side direction S in the movement suppressing portion 27. As a result, the movement of the short-side substrate S (strictly speaking, the auxiliary lens portion 21 side) and the thickness direction T of the LED mounting substrate 2 is suppressed. Accordingly, the relative positions of the lenses 3 and the LEDs 14 located at the corresponding positions in the LED mounting substrate 2 can be stabilized.

In the LED mounting substrate 2, the end portion 2F on the side opposite to the end portion 2D in the short-side direction S abuts against the bottom surface 36A of the notch groove 36 in the closing portion 35 of the lens 3 from the short-side direction S. Accordingly, the movement of the LED mounting substrate 2 in the short-side direction S (strictly speaking, the side opposite to the auxiliary lens portion 21 side) is suppressed. Accordingly, the relative positions of the lenses 3 and the LEDs 14 located at the corresponding positions in the LED mounting substrate 2 can be made more stable. Further, in the LED mounting board 2, the portion on the end portion 2F side in the short-side direction S is wrapped in the support portion 22 more than the end portion 2D.

When the LEDs 14 of the LED mounting substrate 2 emit light, the light (LED emission light) emitted from each of the LEDs 14 is incident on the light incident radiation portion 20 of the lens 3 from the incident surface 24 disposed to face the LEDs 14. Specifically, in the LED mounting substrate 2, light from each of the LEDs 14 on the front surface 2A is incident into the light guiding radiation portion 20 from the incident surface 24A, and light from each of the LEDs 14 on the back surface 2B is incident from the incident surface 24B. It is inside the light guiding radiation unit 20. The light incident on the light guiding radiation portion 20 from each of the incident surfaces 24 is performed in the light guiding radiation portion 20 along the circumferential direction P. In this case, the light guiding radiation portion is formed. The entire region of the circumferential direction P of 20 is radiated from the light guiding radiation portion 20 to the outside (outside of the radial direction R). In other words, the light incident on the light guiding radiation portion 20 from the incident surface 24 is guided by the light guiding radiation portion 20, and the entire region in the circumferential direction of the light guiding radiation portion 20 (the entire region in the circumferential direction P) ) was radiated to the outside.

When the motion of the light in the light guiding radiation portion 20 is described in detail, the light is easily radiated to the outside by the convex portion 25 of the first region 20D in the first region 20D. In the second region 20E, a part of the light is radiated to the inside of the light guiding radiation portion 20, and the portion of the light is scattered by the convex portion 25 of the third region 20F, and is finally radiated to the outside.

Further, the light leaking from the slit portion 23 of the light guiding radiation portion 20 is delivered to the auxiliary lens portion 21, and is radiated to the outside by the auxiliary lens portion 21. Further, in the auxiliary lens portion 21 and the inner side surface 21B thereof, light directly incident on the LED 14 is not incident on the light guiding radiation portion 20 via the incident surface 24. The auxiliary lens 21 and the inner side surface 21B reflect the direct irradiation light from the LED 14 to be incident on the light guiding radiation portion 20 from the outer circumferential surface 20A. Further, the auxiliary lens unit 21 and the inner side surface 21B radiate direct radiation from the LED 14 from the outer side surface 21A and the end surface 21C. As a result, in each of the lenses 3, signal notification that the visibility is hard to change in the circumferential direction P can be performed in the entire circumference of the circumferential direction P.

As a result of the above, in each of the lenses 3, light is emitted slightly uniformly in the entire region in the circumferential direction P.

That is, there is light from the outside that is transmitted to each lens 3 shape. When the light is transmitted to the inside of the light guiding radiation portion 20 through the light guiding radiation portion 20, the light is randomly reflected by the circumferential surface 22A (the convex portion 31) which is subjected to the light shielding treatment on the support portion 22. Accordingly, the light from the outside becomes weak. Further, the convex portion 31 prevents the light leaking to the inside of the light guiding radiation portion 20 from passing through the supporting portion 22 and then entering the light guiding radiation portion 20, thereby causing light to the light guiding radiation portion 20. Radiation characteristics have a bad effect. As a result, the light radiated from the light guiding radiation portion 20 to the outside can be highlighted. Further, the support portion 22 to which the outer peripheral surface 22A is subjected to the light shielding treatment can also function to hide the LED mounting substrate 2 on the inner side. Similarly, the auxiliary lens unit 21 also functions to hide the portion (end portion 2D) exposed from the slit portion 23 of the light guiding radiation portion 20 in the LED mounting substrate 2 .

Further, referring to FIG. 14B, in each of the lenses 3 other than the first lens 3A, as described above, one of the pair of other lenses 3 in which the one end portions 40B of the pair of insertion space forming members 40 are connected to each other is inserted into the space forming member. The other end portion 40C of 40 is approached by elastic deformation. The size of the insertion space 41 (in the width direction W) between the one end portions 40B is smaller than the size in the thickness direction T of the LED mounting substrate 2. Therefore, the one end portion 40B (in particular, the flat surface 40E and the convex portion 40F, see FIG. 11) sandwich the LED mounting substrate 2 from the thickness direction T at a predetermined pressure or higher (avoiding the end portion 2F side of the LED 14) Part) (also see Figure 7).

Further, the other end portion 40C of the pair of insertion space forming members 40 is reinforced by the reinforcing portion 42 and is difficult to flex. At this time, the one end portion 40B enters one of the other lenses 3 connected to the insertion space forming member 40. When it is between the other end portions 40C of the axial direction X, it enters between the other end portions 40C which are reinforced by the reinforcing portion 42. Therefore, the one end portions 40B are elastically deformed and close to each other, and the LED mounting substrate 2 can be sandwiched from the thickness direction T.

In the electric machine 1, when the plurality of lenses 3 are coupled to the axial direction X, one end portion 40B of the pair of insertion space forming members 40 is strongly sandwiched from the thickness direction T in each of the lenses 3. LED mounting substrate 2. Accordingly, the respective lenses 3 are positioned at the relative positions of the LEDs 14 located at the corresponding positions (the same position in the longitudinal direction L) in the LED mounting substrate 2. Further, by the movement suppressing portion 27 or the bottom surface 36A of the notch groove 36 shown in Fig. 7, the relative positions of the lenses 3 and the LEDs 14 located at the corresponding positions in the LED mounting substrate 2 are more stable. As a result, in the electric device 1, even if it vibrates, the light from the LED 14 can be stabilized and guided to the lens 3 and irradiated.

In the slits 23 of the light guiding radiation portion 20, the LEDs 14 mounted on the end portion 2D side in the short-side direction S of the LED mounting substrate 2 are disposed. One of the pair of slits 23 in the light guiding radiation portion 20 serves as an incident surface 24, and the light incident on the lens 3 from the incident surface 24 is guided by the light guiding radiation portion 20, and is in the entire circumferential direction. Was radiated to the outside. With such a configuration, in the electric device 1, the LED mounting substrate 2 and the lens 3 can be closely arranged as close as possible to each other. That is, the electrical machine 1 of the novel configuration related to miniaturization or simplification can be provided.

In the following, as shown in FIG. 2 and FIG. 14B, the link will be The plurality of (final 5) lenses 3 and one of the lenses 3 are interposed in the insertion space forming member 40 by the one end portion 40B. The LED mounting substrate 2 is referred to as an internal unit 100. Further, in the assembly procedure of the internal unit 100 described above, after the lens 3 is first coupled, the LED mounting substrate 2 is inserted into the insertion space 41 of each lens 3. Even if the LED mounting substrate 2 is inserted into the insertion space 41 of the plurality of lenses 3 arranged in a non-connected state, the internal unit 100 may be assembled by connecting the adjacent lenses 3.

Next, a configuration other than the LED mounting substrate 2 and the lens 3 will be described. Further, since the round-shaped (cylindrical) member described below is disposed substantially coaxially with the lens 3 in a state of being assembled in the electric device 1, there is a peripheral surface or an inner peripheral surface of the component. The circumferential direction is set to the circumferential direction P (of the lens 3), and the radial direction of the component is referred to as the radial direction R of the lens 3, and each component will be described.

4B and 5B, the main body 4 is housed in a hollow cylindrical shape in which the lower side of the LED 14 is not mounted in the LED mounting substrate 2, and its central axis extends in the vertical direction (the longitudinal direction L and the axial direction X are the same). Therefore, either of the upper end edge 4A and the lower end edge 4B of the main body 4 is annular. Then, the hollow portion of the main body 4 is exposed from both the upper and lower sides. A plurality of hub portions 50 (here, two) extending up and down are formed on the inner circumferential surface of the main body 4. The hub portions 50 are disposed at intervals in the circumferential direction P of the inner circumferential surface of the main body 4. A screw hole 50A extending vertically is formed in each of the boss portions 50.

The outer peripheral surface 4C of the main body 4 is continuous at its upper end with the upper end edge 4A. The outer peripheral surface 4C is reduced in diameter at the upper end edge 4A side (the upper end portion of the main body 4), and is formed on the upper side portion (upper end portion) where the outer peripheral surface 4C is reduced in diameter, and is formed to extend along the circumferential direction P of the outer peripheral surface 4C. Annular groove 4D. In the lower region (the lower side than the annular groove 4D) in which the outer peripheral surface 4C is reduced in diameter, a rib 4E that protrudes from the outer peripheral surface 4C and extends in the circumferential direction P is formed. The plurality of ribs 4E are provided, and are arranged at intervals in the circumferential direction P.

Further, as shown in FIG. 5B, a plurality of locking grooves 4F are provided at the lower end portion of the inner peripheral surface of the main body 4. The locking grooves 4F are disposed at intervals in the circumferential direction P of the inner circumferential surface of the main body 4. Each of the locking grooves 4F extends from the lower end edge 4B of the inner peripheral surface of the main body 4 to the upper side, and is bent at a right angle to form a predetermined direction in the circumferential direction P (at the time of FIG. 5B, the clockwise direction is viewed from below) ) an extended L shape.

The flat plate 5 is formed in a shape of a slightly round plate having a thin upper and lower plate, and an insertion hole 5A penetrating the flat plate 5 in the thickness direction is formed at a position on the center side of the upper surface of the flat plate as shown in Fig. 4B. As shown in FIG. 5B, a plurality of (here, two) through holes 5B are formed in the flat plate 5 at a position avoiding the insertion hole 5A. The through holes 5B are circular holes that penetrate the flat plate 5 in the thickness direction, and are disposed in the circumferential direction P of the flat plate 5 with a gap therebetween. The insertion hole 5A is located at a position sandwiched by the through holes 5B. As shown in FIG. 4B, on the upper surface of the flat plate 5, a circular tubular boss portion 5C (two in total) that surrounds the through hole 5B and extends upward is provided at a position that coincides with each of the through holes 5B. The support portion 51 is attached to the upper surface of the flat plate 5 so as to avoid the position of the through hole 5B as shown in Fig. 3B. The support portion 51 is a slightly rectangular block shape shape. At least a part of the support portion 51 includes an elastic member such as rubber or foam, and the support portion 51 is elastically deformable. In addition, in FIGS. 4B and 5B, the illustration of the support portion 51 is omitted for convenience of explanation.

The flat plate 5 itself is horizontal, and is housed in the main body 4 from below in a state where the boss portion 5C and the support portion 51 face upward. As shown in FIG. 2, in the hollow portions of the through holes 5B and the hub 5C of the flat plate 5, the screw 56 is inserted from below and is attached to the screw hole 50A of the hub portion 50 corresponding to the main body 4. Accordingly, the flat plate 5 is fixed to the main body 4.

As shown in Fig. 4B, the bracket 6 has a hollow cylindrical shape, and its central axis extends in the up and down direction. At the lower end of the bracket 6, a disk-shaped bottom wall 6A is integrally provided, and the hollow portion of the bracket 6 is blocked from below by the bottom wall 6A. As shown in FIG. 5B, a plurality of (here, three) through holes 6B are formed in the bottom wall 6A. The through holes 6B are circular holes that penetrate the bottom wall 6A in the thickness direction, and are disposed at intervals in the circumferential direction P of the bottom wall 6A. As shown in Fig. 4B, a nut 52 is fixed to each of the upper surface of the bottom wall 6A and the respective through holes 6B. The hollow portion of the nut 52 (the portion where the screw is formed) communicates with the through hole 6B below it. A through hole 6C penetrating the bottom wall 6A in the thickness direction is formed in the bottom wall 6A at a position avoiding the through hole 6B. The through hole 6C is formed in a substantially rectangular shape larger than the through hole 6B (see FIG. 5B).

Further, the outer peripheral surface of the bracket 6 is reduced in diameter at the upper end portion, and an annular groove 6D extending in the circumferential direction P of the outer peripheral surface is formed in the upper side region of the outer peripheral surface of the upper end portion. Furthermore, in the upper end portion (the portion of the reduced diameter) of the bracket 6, the lower side region of the outer peripheral surface (than the annular groove) 6D is further lower), and a rib 6E that protrudes from the outer peripheral surface and extends in the circumferential direction P is formed. The plurality of ribs 6E (the same number as the locking grooves 4F of the bracket 6) are provided, and are arranged at intervals in the circumferential direction P.

Referring to Fig. 5B, the upper side portion of the bracket 6 is fitted into the main body 4, and the flat plate 5 in the main body 4 is opposed from the lower side, and the ribs 6E of the bracket 6 are locked one by one to the inner circumference of the main body 4. The card is grooved 4F. Specifically, after the ribs 6E are moved to the upper ends of the portions extending upward and downward in the corresponding locking grooves 4F, the bracket 6 is relatively rotated (twisted) with respect to the main body 4, so that the ribs 6E are engaged with each other. A portion of the locking groove 4F that extends in the circumferential direction P. That is, the rib 6E and the locking groove 4F are joined. Accordingly, the bracket 6 is fixed to the main body 4. In this state, the rib 6E is locked from the upper portion of the locking groove 4F in the circumferential direction P, so that the bracket 6 is not pulled downward from the main body 4. However, in order to fix the bracket 6 to the main body 4, the bracket 6 can be detached from the main body 4 by following a procedure reverse to the previously described procedure.

When the electric machine 1 is fixed in the pedestal (not shown), the screw (not shown) on the pedestal side is assembled to the nut 52 (see FIG. 4B) through the through holes 6B, and the entire electric machine 1 is fixed. At the pedestal.

The waterproof ring 7 is a rubber gasket formed into a ring shape and is fitted to the upper end portion of the outer peripheral surface of the bracket 6. Strictly speaking, the waterproof ring 7 is provided in the annular groove 6D in the upper end portion of the outer peripheral surface of the bracket 6. In this embodiment, the waterproof ring 7 has a plurality of (two), and is disposed in the annular groove 6D in a state of being arranged up and down. In a state where the bracket 6 is fixed to the main body 4 Next, each waterproof ring 7 seals between the upper end portion of the bracket 6 and the lower end portion of the inner peripheral surface of the main body 4 in the entire area of the entire circumferential direction P (refer to FIG. 2). Accordingly, water is prevented from entering the bracket 6 or the main body 4 through the upper end portion of the bracket 6 and the inner peripheral surface of the main body 4.

The waterproof sheet 8 is a disk shape formed of a sheet of an elastomer such as rubber. The waterproof sheet 8 is formed with a through hole 8A and a through hole 8B that penetrate the waterproof sheet 8 in the thickness direction. The through hole 8B has a slightly semicircular shape and is larger than the through hole 8A. The waterproof sheet 8 is mounted below the bottom wall 6A of the bracket 6. Strictly, a recess 6F that surrounds each of the through holes 6B and the through holes 6C and is shallowly recessed toward the upper side is formed under the bottom wall 6A, and one portion of the waterproof sheet 8 is housed in the recess 6F, and at least the lower end portion is recessed from the recess 6F. It protrudes toward the lower side (see Figs. 1 and 2). One of the through holes 6B of the bottom wall 6A of the bracket 6 is exposed from the through hole 8A to the lower side, and the remaining two through holes 6B and the through holes 6C are exposed from the through hole 8B to the lower side. The waterproof sheet 8 functions to seal between the pedestal (not shown) and the bottom wall 6A of the bracket 6. Accordingly, water is prevented from entering the electric machine 1 through the space between the pedestal and the bottom wall 6A.

The waterproof ring 9 is an annular waterproof gasket formed of rubber or the like. Specifically, the waterproof ring 9 integrally includes an annular main body portion 9A extending upward and downward, and a crotch portion 9B that annularly protrudes from the upper end edge of the main body portion 9A to the center of the center of the main body portion 9A. Compared with the upper side portion, the lower side portion of the main body portion 9A is reduced in diameter, and on the outer peripheral surface of the lower side portion, a plurality of (here, two) are arranged up and down from the outer peripheral surface and along the outer peripheral surface. The annular rib 9C extending in the circumferential direction P (refer to the figure) 3B). The ribs 9C are integrally provided with respect to the waterproof ring 9, and are provided below the central portion of the main body portion 9A in the axial direction (the same as the axial direction X and the longitudinal direction L).

The waterproof ring 9 is externally fitted from above to the upper end portion of the outer peripheral surface 4C of the main body 4. Strictly speaking, as shown in Fig. 2, the crotch portion 9B of the waterproof ring 9 is locked from the upper side in the circumferential direction of the annular upper end edge 4A of the main body 4 (the entire area in the circumferential direction P, the same below) According to this, the waterproof ring 9 is supported from below by the main body 4. Further, the main body portion 9A of the waterproof ring 9 is fitted from the outer side to the entire peripheral portion of the annular groove 4D in the upper end surface of the outer peripheral surface 4C of the main body 4 from the outer side portion (the portion having the reduced diameter). Next, the entire circumferential direction of the upper end portion of the outer peripheral surface 4C of the main body 4 is covered from the outer side. That is, the waterproof ring 9 covers the upper end edge 4A of the main body 4 along the circumferential direction P of the upper end edge 4A, and is continuous with the outer side surface (outer peripheral surface 4C) of the upper end edge 4A in the main body 4.

The main body 4, the flat plate 5, the bracket 6, the waterproof ring 7, the waterproof sheet 8, and the waterproof ring 9 described above constitute the base portion 60.

Referring to Fig. 5A, the outer lens 10 has a hollow cylindrical shape for accommodating the hollow portion 10A of the inner unit 100, and its central axis extends in the vertical direction. The outer lens 10 is formed of a transparent resin (for example, polycarbonate) having impact resistance and light transmittance. The hollow portion 10A of the outer lens 10 is exposed from both the upper and lower sides (that is, open up and down).

Furthermore, the upper end portion 10B of the outer lens 10 is reduced in diameter. In the outer peripheral surface 10C of the outer lens 10, one of the entire peripheral direction of the upper end portion 10B is formed to protrude from the outer peripheral surface 10C and along the outer peripheral surface 10C. The annular rib 10D extending in the circumferential direction P. Further, in the outer peripheral surface 10C of the outer lens 10, a notch groove 10E extending downward is formed in a region adjacent to the upper end portion 10B from below. The notch grooves 10E are formed in plural numbers (here, two), and are arranged in the circumferential direction P with an interval therebetween. Further, at the lower end portion of the inner peripheral surface 10F of the outer lens 10, a concave portion 10G which is slightly recessed toward the outer side in the radial direction R of the outer lens 10 and which is exposed from the outer lens 10 to the lower side is formed. The recessed portion 10G is formed in plural numbers (the same number as the rib portions 4E of the main body 4), and is disposed at intervals in the circumferential direction P of the inner peripheral surface 10F. A locking groove 10H extending in the circumferential direction P is formed on the bottom surface of each concave portion 10G (the inner circumferential surface 10F of the concave portion 10G).

In the electric machine 1 completed as shown in Fig. 2, the upper end portion of the main body 4 to which the waterproof ring 9 is attached is fitted into the hollow portion 10A of the outer lens 10 from below, whereby the main body 4 is fixed to the outer lens 10. At this time, the ribs 4E (see FIG. 5B) of the main body 4 are fitted into the locking grooves 10H (see FIG. 5A) corresponding to the outer lens 10 (the same position in the circumferential direction P). Each of the ribs 4E is locked to a portion where the locking groove 10H is formed in the inner circumferential surface 10F of the outer lens 10 from above. Therefore, when the main body 4 is attached to the outer lens 10, it cannot be detached from the outer lens 10 downward. That is, the main body 4 is connected so as not to be separated from the outer lens 10 from below (so-called dead state), and the hollow portion 10A of the outer lens 10 is blocked from below. Incidentally, "connected into inseparable" as used herein means that the main body 4 and the outer lens 10 are coupled so as not to be separated from the outer lens 10 by at least using a tool (that is, it cannot be separated by one hand) (for The outer top 11 is also the same). And, it is impossible to connect with the main body 4 As another example of the configuration in which the outer lens 10 is separated, a configuration in which the main body 4 is fixed (screw-fixed) to the outer lens 10 by using a screw (preferably a screw having a special shape requiring a special tool) is used.

As described above, the outer lens 10 is supported by the main body 4 (that is, the base portion 60 described above).

Further, in a state in which the main body 4 and the outer lens 10 are coupled, the waterproof ring 9 is located at the lower end portion of the hollow portion 10A of the outer lens 10, and is provided at the joint portion 63 of the main body 4 and the outer lens 10. The connecting portion 63 is constituted by the upper end portion (including the upper end edge 4A) of the main body 4 and the lower end portion of the outer lens 10. In the waterproof ring 9, the body portion 9A is supported by the upper end portion of the main body 4 and the lower end portion of the outer lens 10, and the rib portions 9C seal the upper end portion of the main body 4 and the lower end portion of the outer lens 10 over the entire entire circumferential direction. Between the ministries. Accordingly, water is prevented from entering the main body 4 or the outer lens 10 through the space between the main body 4 and the outer lens 10. Further, the crotch portion 9B of the waterproof ring 9 protrudes from the inner peripheral surface 10F of the outer lens 10 toward the center of the circle of the outer lens 10 (the inner side in the radial direction R) at the lower end portion of the hollow portion 10A of the outer lens 10.

Referring to Fig. 4A, the outer top portion 11 integrally includes a disk-shaped blocking portion 11A and an annular (cylindrical) flange portion 11B that surrounds the outer periphery of the blocking portion 11A and protrudes upward and downward from the closing portion 11A.

A recessed portion 11C that is recessed downward is formed at a slightly circular center position on the upper surface of the closing portion 11A. The concave portion 11C is formed in a substantially rectangular shape as viewed from above. An elongated hole-shaped exposure hole 11D is formed on the bottom surface of the recess 11C. The exposure hole 11D penetrates up and down in the closing portion 11A. Further, on the upper surface of the closing portion 11A, the position adjacent to the exposure hole 11D is set. There is a setting button 78. The setting button 78 is electrically connected to the LED mounting substrate 2 (see FIG. 4B). By operating the button 78 by the user, the illumination pattern of each LED 14 can be set to the desired pattern.

Referring to Fig. 5A, a pair of holding projections 53 projecting downward are provided at a slightly circular center position on the lower surface of the closing portion 11A. The pair of holding projections 53 have almost the same configuration as the one end of each of the lenses 3 to the other end 40C of the insertion space forming member 40. Further, the reinforcing portion 54 may be provided under the closing portion 11A. The reinforcing portion 54 has the same configuration as the above-described reinforcing portion 42, and is provided in each of the holding projections 53 to reinforce the corresponding holding projection 53.

Referring to Fig. 4A, at the lower end edge of the flange portion 11B, an engaging portion 55 that protrudes downward in a convex shape is integrally provided. The engaging portion 55 is provided in plural numbers (the same number of the notch grooves 10E of the outer lens 10), and is disposed at intervals in the circumferential direction P of the flange portion 11B. The upper side portion of the flange portion 11B is reduced in diameter by a portion as compared with the lower side portion. The outer peripheral surface of the flange portion 11B in the upper side portion is a rib portion 11E that protrudes from the outer peripheral surface and extends along the circumferential direction P of the outer peripheral surface. A plurality of ribs 11E are provided, and are arranged at intervals in the circumferential direction P. In the outer peripheral surface of the flange portion 11B in the upper portion, an annular groove 11F extending in the circumferential direction P is formed in a region on the upper side of the rib portion 11E.

Further, as shown in FIG. 5A, at the lower end portion of the inner peripheral surface of the flange portion 11B, one locking groove 11G extending in the circumferential direction P of the inner circumferential surface of the flange portion 11B is formed. Further, in the flange portion 11B, as described above, a symbol is added to the boundary portion of the upper side portion and the lower side portion of the reduced diameter. "11H". The boundary portion 11H is located below the relatively closed portion 11 (see also FIG. 2).

In the completed electric machine 1, the outer top portion 11 is attached to the upper end portion 10B of the outer lens 10 such that the flange portion 11B is externally fitted to the upper end portion 10B of the outer lens 10. In this state, as shown in Fig. 2, the clogging portion 11A of the outer top portion 11 blocks the hollow portion 10A of the outer lens 10 from above, and is formed in the rib portion 10D on the outer peripheral surface of the upper end portion 10B of the outer lens 10, in the circumferential direction. The entire area is locked to the locking groove 11G of the inner circumferential surface of the flange portion 11B (see also FIG. 5A). The rib 10D is locked from the upper portion to a portion where the locking groove 11G is formed in the flange portion 11B. Therefore, when the outer top portion 11 is attached to the outer lens 10, it cannot be detached from the outer lens 10 upward. That is, the outer top portion 11 is joined so as not to be separated from the outer lens 10 from below (dead state). Further, each of the engaging portions 55 of the flange portion 11B is fitted into the notch groove 10E (see FIG. 1) corresponding to the upper end portion 10B of the outer lens 10 (the same position in the circumferential direction P) from the upper side, and is circumferentially oriented. P is locked to the upper end portion 10B of the outer lens 10. Therefore, the outer top portion 11 cannot move relative to the outer lens 10 in the circumferential direction P.

As described above, the outer top portion 11 is joined so as not to be separated from the outer lens 10 from above. Further, in the top portion 11 outside this state, the pair of holding projections 53 are in and out of the hollow portion 10A of the outer lens 10 from above.

Referring to Fig. 5A, the waterproof cover 12 is an annular waterproof gasket formed of rubber or the like. In detail, the waterproof cover 12 integrally includes an annular inner portion 12A, an annular outer portion 12B having a diameter larger than the inner portion 12A, and an upper end portion connecting the inner portion 12A and the outer portion 12B. The joint portion 12C of each other. Therefore, as shown in FIG. 2, the cut surface at the time of cutting one of the circumferential direction P in the waterproof cover 12 is a concave shape which is opened downward.

In the completed electric machine 1, the waterproof cover 12 is provided at the joint portion 64 of the outer lens 10 and the outer top portion 11. The connecting portion 64 is constituted by the upper end portion 10B of the outer lens 10 (including the annular upper end edge 10J in the front end of the upper end portion 10B) and the lower end portion of the flange portion 11B of the outer top portion 11. In detail, the waterproof cover 12 is attached to be fitted to the lower end portion of the flange portion 11B of the outer top portion 11, and is locked from the upper portion to constitute the annular upper end edge 10J.

In the waterproof cover 12 in this state, the connecting portion 12C abuts against the upper end edge 10J of the outer lens 10 from the upper side in the entire entire circumferential direction, and is spliced from below to the upper and lower sides of the flange portion 11B in the entire entire circumferential direction. 11H on the way to the boundary. Further, in the waterproof cover 12, the outer portion 12B is pressed into the portion of the flange portion 11B of the outer top portion 11 which is lower than the boundary portion 11H, and is sandwiched by the outer peripheral surface 10C of the outer end surface 10B, and the outer surface 10C Between the inner circumferential faces of the flange portions 11B of the top portion 11. Therefore, the waterproof cover 12 is supported (positioned) by the outer lens 10 and the outer top portion 11. Further, in the waterproof cover 12, the inner portion 12A is located on the inner peripheral surface 10F side of the outer lens 10 so as to be along the inner peripheral surface 10F of the upper end portion 10B of the outer lens 10.

That is, the waterproof cover 12 extends from the upper side in the outer lens 10 to the outer side of the upper end edge 10J (outer side surface 10C), and in the outer lens 10 to the inner side surface (the inner peripheral surface 10) of the upper end edge 10J, and is sandwiched Enter The outer lens 10 and the outer top 11 are supported. In this state, in the waterproof cover 12, the outer portion 12B seals between the flange portion 11B of the outer top portion 11 and the upper end portion 10B of the outer lens 10 in the entire entire circumferential direction. Accordingly, water is prevented from immersing into the outer lens 10 or the outer top portion 11 between the outer top portion 11 and the upper end portion 10B of the outer lens 10.

Referring to Fig. 5A, the head cover 13 has a circular cover shape. The head cover 13 integrally includes a disk-shaped blocking portion 13A and an annular flange portion 13B that surrounds the outer periphery of the closing portion 13A and protrudes downward from the closing portion 13A. At the lower end portion of the inner peripheral surface of the flange portion 13B, a locking groove 13C is formed with a plurality of (the same number of ribs 11E as the outer top portion 11). These locking grooves 13C are disposed at intervals in the circumferential direction P of the inner circumferential surface of the flange portion 13B. Each of the locking grooves 13C extends from the lower end edge of the inner peripheral surface of the flange portion 13B to the upper side, and is bent at a right angle to form a predetermined direction in the circumferential direction P (at the time of FIG. 5A, the clockwise view is viewed from below) The direction) extends in the shape of an L.

The head cover 13 is attached to the outer top portion 11 from above in such a manner as to cover the upper surface of the outer top portion 11. At this time, the ribs 11E of the outer top portion 11 are locked one by one to the locking grooves 13C of the inner circumferential surface of the head cover 13. Specifically, after the ribs 11E are moved to the upper ends of the portions extending upward and downward in the corresponding locking grooves 13C, the head cover 13 is relatively rotated (twisted) to the outer top portion 11, so that the ribs 11E are engaged with the card. A portion of the groove 13C that extends in the circumferential direction P. That is, the rib 11E and the locking groove 13C are joined. Accordingly, the head cover 13 is fixed to the outer top portion 11. In this state, the rib 11E is locked from the upper side in the locking groove 13C and extends in the circumferential direction P. In part, the head cover 13 is not pulled upward from the outer top portion 11. However, in order to fix the head cover 13 to the outer top portion 11, the head cover 13 can be detached from the outer top portion 11 by following a procedure reverse to the previously described procedure.

Referring to Fig. 3A, the waterproof ring 18 is a rubber gasket formed in a ring shape, and two annular ribs 18A extending in the circumferential direction P are arranged side by side on the outer peripheral surface thereof. The waterproof ring 18 is externally fitted to the outer peripheral surface of the outer top portion 11 as shown in FIG. Strictly speaking, the waterproof ring 18 is provided in the annular groove 11F in the upper end portion of the outer peripheral surface of the outer top portion 11. Each of the ribs 18A in the waterproof ring 18 seals between the upper end portion of the outer top portion 11 and the inner peripheral surface of the flange portion 13B of the head cover 13 over the entire circumference direction. Accordingly, water is prevented from immersing into the outer top portion 11 between the upper end portion of the outer top portion 11 and the flange portion 13B.

The internal unit 100 (the five lenses 3 connected in the axial direction X and the LED mounting substrate 2) are housed in the hollow portion 10A of the outer lens 10. In the uppermost first lens 3A, one end portion 40B of the pair of insertion space forming members 40 is close to each other by performing a pair of the pair of clamping protrusions 53 in the outer top portion 11, and the LED mounting is carried out from the thickness direction T. The upper end portion (one end portion in the longitudinal direction) 2G of the substrate 2. At this time, the pair of holding projections 53 directly or indirectly support (connected to the other lens 3) the first lens 3A or the upper end portion 2G of the LED mounting substrate 2 via the one end portion 40B.

The lower side portion of the LED 14 is not mounted in the LED mounting substrate 2, and is housed in the main body 4 as described above, and is in contact with the main body 4 from above. The support portion 51 of the flat plate 5. Since the support portion 51 is elastically deformable as described above, the support portion 51 is supported to push the lower end portion 2H (the other end portion in the longitudinal direction L) of the LED mounting substrate 2 upward. Accordingly, the five lenses 3 and the LED mounting substrate 2 (that is, the entire internal unit 100) are pushed from the lower side to the holding protrusions 53 of the lower top portion 11. Therefore, by sandwiching the projections 53 and the support portion 51, it is possible to elastically hold the entire LED mounting substrate 2 and the plurality of lenses 3 (that is, the internal unit 100) without loosening.

Further, as described above, in the waterproof ring 9 in a state in which the main body 4 is supported, the crotch portion 9B is spliced from below to the periphery of the light guiding radiation portion 20 of the fifth lens 3E of the lowest position in the internal unit 100. Directions throughout the area. In other words, the annular upper end edge 4A in the main body 4 is elastically supported by the inner unit 100 from the lower side in the circumferential direction P of the upper end edge 4A via the flange portion 9B of the waterproof ring 9 of the upper end edge 4A (the fifth lens 3E) ).

Further, as described above, in the waterproof cover 12 in a state in which the outer top portion 11 is supported, the inner portion 12A is spliced from above to the light guiding radiation portion 20 of the uppermost first lens 3A in the inner unit 100. The whole direction of the week. As a result, the waterproof ring 9 and the waterproof cover 12 of the inner unit 100 are elastically held between the upper and lower sides, and the inner unit 100 (the entire first lens 3A to the fifth lens 3E) is elastically held.

As described above, in the electric device 1, the main body 4 is connected so as not to be separated from the lower side with respect to the lens 10 in which the inner unit 100 is housed in the hollow portion 10A, and the outer top portion 11 is connected so as not to be separated from above.

The main body 4 and the outer top 11 are respectively connected by the outer lens 10, The shape of the entire electrical machine 1 is maintained. Furthermore, since the hollow portion 10A of the outer lens 10 is blocked from the upper and lower sides by the main body 4 and the outer top portion 11, it is possible to prevent the internal unit 100 in the outer lens 10 from being accessed by a user or the like, or directly from an external impact. Acts on the internal unit 100.

Then, the waterproof ring 9 provided between the outer lens 10 and the connecting portion 63 of the main body 4 is spliced to the inner unit 100 from below, and the waterproof cover 12 provided between the outer lens 10 and the connecting portion 64 of the outer top 11 abuts from above. Internal unit 100. Accordingly, the inner unit 100 is elastically held from above and below between the waterproof cover 12 and the waterproof ring 9 in such a manner as to be positioned up and down. At this time, even if the electric machine 1 vibrates or applies an impact, the vibration or impact is alleviated by the waterproof cover 12 and the waterproof ring 9, so that vibration or impact can be prevented from being transmitted to the internal unit 100.

From the above results, in the electric machine 1, the accommodated internal unit 100 can be reliably supported, and it can be protected from vibration or shock.

Furthermore, since the waterproof ring 9 is supported by the main body 4, the waterproof cover 12 is supported by the outer top portion 11, so that the position of the waterproof ring 9 and the waterproof cover 12 can be prevented from being displaced when the electric machine 1 is assembled. Accordingly, the assembly of the electric machine 1 becomes easy.

In detail, the waterproof ring 9 is positioned up and down by being locked to the upper end edge 4A of the main body 4. Therefore, it is possible to prevent the waterproof ring 9 from being stretched by the outer lens 10 and being vertically displaced (detailed below) when the main body 4 is attached to the outer lens 10 from below in the manufacturing stage of the electric device 1. Furthermore, since the upper end edge 4A of the ring in the main body 4 is waterproofed 9. The internal unit 100 is supported along the circumferential direction P, so that the position of the internal unit 100 is stabilized, and the internal unit 100 can be prevented from being shaken.

Further, at the time of assembly of the electric machine 1, by the upper end edge 10J of the outer lens 10, the waterproof cover 12 is locked from above to be positioned up and down across the outer peripheral surface 10C and the inner peripheral surface 10F of the outer lens 10 Also. Therefore, it is possible to prevent the waterproof cover 12 from being stretched by the outer top portion 11 and being vertically displaced (in detail, falling below) when the outer top portion 11 is attached to the outer lens 10 from below in the manufacturing stage of the electric machine 1.

Further, since the waterproof ring 9 and the waterproof cover 12 function not only as a cushioning material applied to the vibration or impact of the internal unit 100 but also as a function of ensuring the waterproofness of the electrical device 1, it is possible to reduce the electrical equipment 1 The number of parts. Further, since the waterproof ring 9 is supported by being sandwiched between the outer lens 10 and the main body 4, the waterproof cover 12 is supported by being sandwiched between the outer lens 10 and the outer top 11, so that in the electric machine 1, the waterproof can be reliably supported separately Ring 9 and waterproof cover 12.

Further, in the electric device 1 having the above configuration, even if it vibrates, the light from the LED 14 can be made more stable and guided to the lens 3 and irradiated.

Further, one end side of the longitudinal direction L of the LED mounting substrate 2 (the one end side lens 3 or one end of the LED mounting substrate 2 (upper end portion 2G)) is supported by the holding protrusion 53 on the outer lens 10 side. The other end portion (lower end portion 2H) of the longitudinal direction L of the LED mounting substrate 2 is supported by the support portion 51 of the base portion 60. Further, the outer lens 10 is coupled to the base portion 60, and the entire five lenses 3 are fixed to the outer lens. 10 and both sides of the base portion 60. Accordingly, in the electric device 1, the lens 3 and the LED mounting substrate 2 can be held separately. Accordingly, in the electric device 1, even if it vibrates, the light from the LED 14 can be stabilized and guided to the lens 3 and irradiated. Specifically, the light emitted from the LED 14 is radiated by the respective lenses 3, passes through the outer lens 10, and is radiated from the entire area of the electrical device 1 to the outside of the outer lens 10.

Referring to Fig. 4B, the cable 17 connected to the terminal 16 of the LED mounting substrate 2 is led out to the outside of the electric machine 1 through the insertion hole 5A of the flat plate 5, the through hole 6C of the bracket 6, and the through hole 8B of the waterproof sheet 8. , is connected to a power source or a control machine.

Then, another electric device 1 (not limited to the above-described signal display lamp) can be connected to the electric device 1.

Hereinafter, a connection structure 70 for connecting adjacent electric machines 1 to each other will be described.

Fig. 15 is a perspective view of the electrical machine 1 to be connected. Fig. 16 is a schematic longitudinal sectional view showing an electric machine 1 to be connected. In FIGS. 15 and 16, an example of the case where two other electric machines 1 are connected to the electric device 1 of the signal display lamp in a stacked state from above is shown. For convenience of explanation, the three electric machines 1 are sequentially divided into electrical machines 1A, 1B, and 1C from the bottom. At the time of Figs. 15 and 16, at least one of the three electric machines 1 (here, the electric machine 1A) is a signal display lamp. Of course, even if all the electrical devices 1 connected are signal indicators. Further, as the electric device 1 other than the signal display lamp, a device for issuing a warning sound and a recording target can be cited. A device that sends various kinds of information to a machine such as an external computer or a log of an operation status, such as an external computer.

The plurality of electric machines 1 (here, three) are connected in a state of being arranged on a common reference shaft 71 extending in the vertical direction.

Furthermore, the plurality of electrical machines 1 each have a connecting end portion 73 that forms an opening 72.

Referring to Fig. 16, at the time of electrical device 1A, the portion where the hollow portion 10A of the outer lens 10 is exposed upward is the opening portion 72, and the upper end portion 10B of the outer lens 10 is the connecting end portion 73.

Each of the electric machines 1B and 1C has a tubular body (here, a cylindrical shape) extending along the reference axis 71. The internal unit 100 is housed in the main body 74 (may be formed by a different component from the lens 3 or the LED mounting substrate 2).

Further, the circular (cylindrical) member (including the main body 74) described below is configured to be substantially coaxial with the lens 3 of the electric device 1A in a state of being integrated with the electric device 1A. In order to facilitate the description, the circumferential direction of the outer circumferential surface or the inner circumferential surface of the component is set to the circumferential direction P of the lens 3, and the radial direction of the component is set to the diameter of the lens 3 . R and the description of each part. Further, the reference shaft 71 passes through the center of each of the parts or the lenses 3.

At the lower end portion of the inner peripheral surface of the body 74, an annular flange portion 74A projecting to the radially inner side of the body 7 is integrally provided. In the body 74, the space surrounded by the dam portion 74A is under each of the electrical machines 1B and 1C. The opening portion 72 on the side (referred to as "lower opening portion 72L"). The lower end portion of the main body 74 (the annular portion on the lower side of the crotch portion 74A) is the connection end portion 73 (referred to as "lower connecting end portion 73L") on the lower side of each of the electric machines 1B and 1C.

The inner peripheral surface of the lower connecting end portion 73L is provided with the same number of locking grooves 74B as the locking groove 13C, and has the same shape as the locking groove 13C (see FIG. 5A) of the head cover 13 (L shape). Further, the upper portion of the main body 74 is exposed to the upper portion, and is an opening portion 72 (referred to as "upper opening portion 72U") on the upper side of the electric devices 1B and 1C, and the annular portion in the upper end portion of the main body 74 is The connection end portion 73 of each of the upper sides of the electric machines 1B and 1C (referred to as "upper connection end portion 73U").

The upper side connecting end portions 73U of the electric machines 1B and 1C are the same as the upper end portion 10B of the lens 10 other than the electric machine 1A, and are reduced in diameter, and the rib portion 10D is formed on the outer peripheral surface of the upper connecting end portion 73U (refer to Figure 5A) Ribs 73A of the same shape. The rib 73A protrudes from the outer peripheral surface of the upper connecting end portion 73U, and extends annularly over the entire circumference of the outer peripheral surface. Further, in the outer peripheral surface of each of the main bodies 74 of the electric machines 1B and 1C, a region adjacent to the upper connecting end portion 73U from the lower side forms a notch 74C extending downward as the notch groove 10E of the outer lens 10 (see Fig. 15). . The notches 74C are formed in the same number (here, two) as the notch grooves 10E, and are arranged at intervals in the circumferential direction P of the main body 74.

The connection structure 70 is constituted by the outer top portion 11, the waterproof cover 12, the waterproof ring 18, and the connection end portion 73 of each electrical device 1. link The structure 70 is an electric machine 1 in which a plurality of electric machines 1 are arranged on the common reference shaft 71, and the connection end portions 73 of the adjacent ones of the electric machines 1 are connected to each other via the outer top 11, the waterproof cover 12, and the waterproof ring 18. Therefore, the joint structures 70 are disposed one by one between adjacent ones of the electrical machines 1. Further, in the following description, each of the electric appliances 1 is configured to remove the outer top 11, the waterproof cover 12, and the waterproof ring 18 in the electric device 1.

Here, in the electrical device 1 in which one of the electrical devices 1 is connected by the connection structure 70, the electric device 1 on the one side (here, the lower side) of the top portion 11 other than the connection structure 70 is referred to as a one-side electric machine 1X. And the electric machine 1 located on the other side (here, the upper side) with respect to the outer top 11 is referred to as the other side electric machine 1Y. In the case of the electric machines 1A to 1C of FIG. 15 and FIG. 16 , when the top 11 of the connection structure 70 between the electric device 1A and the electric device 1B is used as the reference, the electric device 1A becomes the one side electric device 1X, and the electric machine 1B Become the other side electric machine 1Y. When the top portion 11 other than the connection structure 70 between the electric device 1B and the electric device 1C is used as the reference, the electric device 1B becomes the one side electric device 1X, and the electric device 1C becomes the other side electric device 1Y.

In the flange portion 11B of the top portion 11 other than the connection structure 70, the lower portion of the engagement portion 55 and the locking groove 11G is provided as one side connection portion 75, and the rib portion 11E and the upper side of the annular groove 11F are formed. The portion becomes the other side connecting portion 76 (see also FIG. 5A). In the outer top portion 11, the closing portion 11A is located between the lower end of the one side connecting portion 75 and the upper end of the other side connecting portion 76.

Referring to Fig. 16, in the state in which the electric device 1A (one side electric device 1X) and the electric device 1B (the other side electric device 1Y) are connected by the connection structure 70, one side of the top portion 11 outside the connection structure 70 is provided. The connecting portion 75 is externally fitted to the connecting end portion 73 of the electric device 1A from above. In this state, since the rib 10D of the connecting end portion 73 of the electric device 1A is fitted into the locking groove 11G of the one side connecting portion 75, the one side connecting portion 75 is embedded in the connecting end portion 73 of the electric device 1A. In this state, it cannot be pulled upward from the connection end portion 73. Further, as shown in FIG. 15, each of the engaging portions 55 of the one side connecting portion 75 is fitted one by one from the upper side into the notch groove 10E in the connecting end portion 73 of the electric device 1A, and the connecting end portion 73 snaps. Accordingly, the relative rotation of the one end side connecting portion 75 of the electric machine 1A to the connecting end portion 73 (around the reference axis 71) is restricted. As described above, the one side connecting portion 75 is fixed to the connecting end portion 73 of the electric device 1A, and cannot be relatively rotated about the reference axis 71. Incidentally, the term "fixed to be relatively rotatable" means that the one side connecting portion 75 cannot be relatively rotated with respect to the connecting end portion 73 under a predetermined force, and one side is made under a predetermined force. When the connecting portion 75 relatively rotates the connecting end portion 73, the one side connecting portion 75 and the connecting end portion 73 are coupled so that at least one of the one side connecting portion 75 and the connecting end portion 73 (for example, the engaging portion 55) is not broken. . Here, in order to fix the one side connecting portion 75 so as not to be able to relatively rotate the connecting end portion 73, in addition to the configuration in which the engaging portion 55 is engaged (fitted) in the notch groove 10E, a screw is used. One side connecting portion 75 is fixed (screw-fixed) to the connecting end portion 73, or one side connecting portion 75 is adhered to the connecting end portion 73 by an adhesive. Cheng can also be used as an example.

Further, the other side connecting portion 76 of the top portion 11 other than the connecting structure 70 connecting the electric device 1A and the electric device 1B is embedded in the connecting end portion 73 of the electric device 1B from the lower side as shown in Fig. 16 (lower side) Connecting end portion 73L). In this state, since the ribs 11E of the other side connecting portion 76 are fitted one by one into the locking groove 74B of the lower connecting end portion 73L, the other side connecting portion 76 does not come from the electric machine 1B. The lower side connecting end portion 73L is pulled downward. However, the locking groove 74B has the same L shape as the locking groove 13C (see FIG. 5A) of the head cover 13, and extends from the lower edge of the lower peripheral end surface of the lower connecting end portion 73L to the upper side, and is folded at a right angle. The bend extends to the circumferential direction P of the inner peripheral surface. Therefore, when the other side connecting portion 76 is relatively rotated about the reference shaft 71 to the lower side connecting end portion 73L of the electric device 1B, the rib portions 11E and the rib portions 11E are connected from the lower side connecting end portion 73L in the locking groove 74B. When the lower end portion of the circumferential surface extends to the upper portion, the rib portions 11E can be displaced from the locking groove 74B to the lower side. Accordingly, the other side connecting portion 76 can be pulled out from the lower side connecting end portion 73L of the electric device 1B to the lower side. When the procedure opposite to the pulling is followed, the other side connecting portion 76 can be reconnected to the lower side connecting end portion 73L of the electric machine 1B. That is, the other side connecting portion 76 is connected to be detachably attached to the reference shaft 71 with respect to the connecting end portion 73 (the lower connecting end portion 73L) of the electric device 1B.

Further, the blocking portion 11A in the top portion 11 other than the connecting member 70 of the electric device 1A and the electric device 1B temporarily blocks the opening portions 72 of the electric device 1A and the electric device 1B (at the time of the electric device 1B) Lower side opening portion 72L). However, the exposure holes 11D (described above) formed in the closing portion 11A communicate with each of the openings 72 of the electric device 1A and the electric device 1B.

Here, as shown in FIG. 15, each electrical device 1 is provided with a connection terminal 77 electrically connected to another connected electric device 1. At the time of the electric device 1A of the signal display lamp, the connection terminal 77 is electrically connected to the LED mounting substrate 2, and is exposed upward from the closing portion 11A. The exposure hole 11D exposes the connection terminal 77 of the electric device 1A to the side of the electric device 1B. As shown in Fig. 16, by connecting the cable 79 connected to the internal unit 100 in the electric device 1B to the connection terminal 77, the electric device 1A and the electric device 1B can be electrically connected.

Further, in the waterproof cover 12 that connects the connection structure 70 of the electric device 1A and the electric device 1B, the inner portion 12A is disposed in the periphery of the upper end edge 10J of the outer lens 10 (the periphery of the opening portion 72 of the electric device 1A). On the inner peripheral surface 10F side, the outer side portion 12B is interposed between the outer peripheral surface 10C and the one outer side connecting portion 75 of the outer top portion 11 in the periphery of the upper end edge 10J of the outer lens 10. Further, the joint portion 12C of the waterproof cover 12 is interposed between the upper end edge 10J of the outer lens 10 and one of the outer side joint portions 75 (in detail, the boundary portion 11H). In other words, the waterproof cover 12 is interposed between the electric device 1A and the one side connecting portion 75 along the periphery of the opening portion 72 of the electric device 1A, and the electric device 1A and the one side connecting portion 75 are sealed in the entire entire circumferential direction. between.

Further, the waterproof ring 18 connecting the connection structure 70 of the electric device 1A and the electric device 1B is provided on the other side of the outer top portion 11 The annular groove 11F in the side connecting portion 76 seals between the other side connecting portion 76 and the inner peripheral surface of the connecting end portion 73 (lower connecting end portion 73L) of the electric device 1B in the entire circumferential direction.

Similarly, even in the connection structure 70 in which the electric device 1B (which becomes the one side electric device 1X) and the electric device 1C (which becomes the other side electric device 1Y) are connected, one side side connecting portion 75 of the outer top portion 11 is fixed to the electric pair. The connecting end portion 73 of the machine 1B (the upper connecting end portion 73U) is not rotatable relative to the reference axis 71. Further, the other side connecting portion 76 of the outer top portion 11 is connected to be detachably attached to the reference shaft 71 with respect to the connecting end portion 73 (lower connecting end portion 73L) of the electric device 1C. Further, the waterproof cover 12 is interposed between the electric device 1B and the one side connecting portion 75 along the periphery of the opening portion 72 (upper opening portion 72U) of the electric device 1B, and seals the electric device 1B and the entire area in the entire circumferential direction. Between the side connecting portions 75. Further, the waterproof ring 18 is provided in the annular groove 11F in the other side connecting portion 76 of the outer top portion 11, and seals the other side connecting portion 76 and the connecting end portion 73 of the electric machine 1C in the entire entire circumferential direction (lower side) Between the inner peripheral faces of the connecting end portions 73L).

Further, the end portion 73U is connected to the upper side of the electric device 1C, and the head cover 13 is attached via the connection structure 70. Even in this joint structure 70, one side connecting portion 75 of the outer top portion 11 is fixed to the upper side connecting end portion 73U of the electric machine 1C, and cannot be relatively rotated about the reference shaft 71. Each of the ribs 11E of the outer top portion 11 is locked by a locking groove 13C (a portion extending in the circumferential direction of the inner circumferential surface of the flange portion 13B) of the inner peripheral surface of the flange portion 13B of the head cover 13 The locking grooves 13C are combined. According to this, the outer top The other side connecting portion 76 of the eleven is connected to be detachably attached by relatively rotating the head cover 13 about the reference shaft 71. Further, the waterproof cover 12 is interposed between the electric device 1C and the one side connecting portion 75 along the periphery of the opening portion 72 (upper opening portion 72U) of the electric device 1C, and seals the electric device 1C and the entire area in the entire circumferential direction. Between the side connecting portions 75. Further, the waterproof ring 18 is provided in the annular groove 11F of the other side connecting portion 76 of the outer top portion 11, and seals between the other side connecting portion 76 and the inner peripheral surface of the head cover 13 over the entire circumferential direction.

As described above, in the top portion 11 other than the connection structure 70, the one side connection portion 75 is fixed so as not to be relatively rotatable to the connection end portion 73 of the one side electric device 1X. In particular, the one side connecting portion 75 of the outer top portion 11 can be fixed to the connecting end portion 73 of the one side electric device 1X by the engaging portion 55 of the one side connecting portion 75, and the relative rotation cannot be surely performed (refer to FIG. 15). . As a result, the one side connecting portion 75 is fixed to the connecting end portion 73 so as not to be relatively rotatable, and the outer top portion 11 and the one side electric device 1X are integrated.

Further, in the top portion 11 other than the connecting member 70, the other side connecting portion 76 is connected to be detachably attached to the connecting end portion 73 of the other side electric device 1Y.

As described above, when the one side electric device 1X and the other side electric machine 1Y are relatively rotated, the other side electric machine 1Y can be easily mounted to the outer top portion 11 in a state where the outer top portion 11 and the one side electric device 1X are integrated. It is removed (the other side electric machine 1Y is added to the one side electric machine 1X, or the additional one is released). That is, it is possible to seek to upgrade the electrical machine 1 The ease of connecting or separating from each other. Accordingly, it is possible to add another electric device 1 to the electric device 1 and expand the function of the entire electric machine 1. Furthermore, the connected electric machine 1 can be reassembled into another electric machine 1. Further, when the connection structure 70 is used, any number of electrical devices 1 (even if the functions or types are the same or different) may be laminated and connected.

Further, in the top portion 11 other than the connection structure 70, the closing portion 11A blocks the opening portions 72 of the one side electric device 1X and the other side electric device 1Y. Therefore, in the connection structure 70, it is possible to improve the water repellency in the state in which one electric device 1X and the other electric device 1Y are connected.

Further, in the connection structure 70, the waterproof cover 12 seals between the one side electric device 1X and the one side side connection portion 75 of the outer top portion 11, and the one side side electric machine 1X is formed in the closing portion 11A at the required minimum limit. The connection terminal 77 is exposed to the exposure hole 11D (see FIG. 15). Therefore, it is possible to improve the waterproofness in the vicinity of the connection end portion 73 in the one-side electric device 1X (see FIG. 15) in the state in which the other side electric device 1Y is separated. Further, in the closing portion 11A, the exposure hole 11D is formed at the required minimum limit, and the outer top portion 11 is fixed so that the one side electric device 1X cannot be removed, so that the user can be prevented from being electrically operated from one side. The opening portion 72 of the 1X inadvertently touches the inside of the one side electric machine 1X.

In the above description, at least one of the plurality of electrical devices 1 (electrical machine 1A) is described for the configuration of the plurality of electrical devices 1 to be connected. The signal display lamp when the signal is displayed (in other words, the signal display lamp connected to the other electric device 1 by the connection structure 70) may be an electric device other than the signal display lamp. For example, when one of the connected electrical machines 1 is a machine that emits a warning sound, the internal unit 100 of the machine can be a speaker or an electronic component.

The invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.

For example, referring to FIG. 14B, among the two lenses 3 (see the second lens 3B and the third lens 3C) that are connected, the front end portion 32A of each of the positioning ribs 32 of the one lens 3 (third lens 3C) is stuck. The other end side of the support portion 22 in the other lens 3 (second lens 3B) is joined to the other end side (the other end side is joined to the inner peripheral surface 22B on the end surface 22F side). Here, even in the other end side of the axial direction X in the other lens 3, the same number (here, four) of the recesses 90 of the end portions 32A of the respective positioning ribs 32 are provided (for the four). The second connection guide unit may be (see FIG. 13). By engaging the distal end portion 32A in each of the concave portions 90, it is possible to suppress the rotation of each of the lenses 3 (the two adjacent lenses 3) that are centered on the rotational axis (the above-described reference axis 71) in the axial direction X ( The twist of the adjacent lens 3). Accordingly, it is possible to suppress the application of the load generated by the twist to the LED mounting substrate 2 included in the insertion space 41 of each lens 3. Further, as shown in FIG. 2, such a concave portion 90 may be provided below the closing portion 11A of the outer top portion 11.

Furthermore, as described above, if the waterproof ring 9 of the inner unit 100 is sandwiched from above and below, and a waterproof gasket different from the waterproof cover 12 is provided, The waterproof ring 9 and the waterproof cover 12 may function as a simple cushioning material for supporting the internal unit 100 without being waterproof.

Fig. 17 is a perspective view of the lens 3 of the modification. Fig. 18 is a plan view of a lens 3 according to a modification.

The lens 3 according to the modification shown in FIGS. 17 and 18 includes an inner side illuminating unit 80 inside the light guiding radiation portion 20 and outside the support portion 22 (that is, between the light guiding radiation portion 20 and the supporting portion 22). The inner side irradiation unit 80 is provided in a pair so as to be provided on both sides of the support portion 22 in the width direction W. Each of the inner side irradiation portions 80 is disposed at a position deviated from the slit portion 23 by about +90 degrees or about -90 degrees in the circumferential direction P. Each of the inner side irradiation portions 80 has a columnar shape extending from the connection portion 33 in the axial direction X. The cross section of each of the inner side irradiation portions 80 at the time of cutting in a plane orthogonal to the axial direction X constitutes a slightly triangular shape which is tapered toward the opposite position 20C of the light guiding radiation portion 20. Therefore, in each of the inner side irradiation portions 80, the end surface 80A on the slit portion 23 side is a flat surface along both the width direction W and the axial direction X. Further, although the inner side irradiation unit 80 is disposed between the light guiding radiation unit 20 and the support unit 22 (see FIG. 18), the present invention is not limited thereto, and is connected to both the light guiding radiation unit 20 and the supporting unit 22 or One party is also available.

When the light of the LED 14 is emitted and the light leaks to the inside of the light guiding radiation portion 20, part of the light is irradiated from the end surface 80A to the slit portion 23 side by the inner side illuminating portion 80 (strictly speaking, the light guiding radiation portion 20 is The first region 20D side, at the time of FIG. 18, the region directly above the end surface 80A area). Among the light thus irradiated, the light reaching the first region 20D is radiated from the light guiding radiation portion 20 in the first region 20D to the outside. Further, the light that has arrived at the side of the slit portion 23 after being irradiated by the inner side irradiation portion 80 is radiated to the outside by the auxiliary lens portion 21 of the slit portion 23. According to this, in the electric device 1, it is possible to achieve uniformization in the circumferential direction P of the amount of light radiated from the light guiding radiation portion 20 to the outside.

In the above-described embodiment, the cross-sectional shape of the convex portion 25 in the inner circumferential surface 20B of the light guiding radiation portion 20 is different between the first region 20D and the second region 20E and the third region 20F (see FIGS. 6 to 8). As in the modified example, the cross-sectional shape of the convex portion 25 may be the same even in the entire region from the first region 20D to the third region 20F. At this time, the cross-sectional shape of each convex portion 25 is similar to the cross-sectional shape of the convex portion 25 in the first second region 20E (see FIGS. 6 to 8). Therefore, the basic cross-sectional form of each convex portion 25 at the time of cutting the cut surface orthogonal to the axial direction X becomes the same position in the circumferential direction P in the inner peripheral surface 20B.

1, 1A, 1B, 1C‧‧‧ electrical machines

1X‧‧‧one side electrical machine

1Y‧‧‧Other electrical machine

3‧‧‧ lens

3A‧‧‧1st lens

3B‧‧‧2nd lens

3C‧‧‧3rd lens

10‧‧‧Outer lens

10A‧‧‧ hollow part

10B‧‧‧Upper

10C‧‧‧Outdoor Department

10D‧‧‧ ribs

10E‧‧‧ gap trench

10J‧‧‧ upper edge

10F‧‧‧ inner circumference

11‧‧‧Outer top

11A‧‧‧The Department of Occlusion

11B‧‧‧Flange

11D‧‧‧Exposed hole

11E‧‧‧ ribs

11F‧‧‧ annular groove

11G‧‧‧ card ditch

11H‧‧ ‧ Ministry of the Realm

12‧‧‧Waterproof cover

12A‧‧‧ inside part

12B‧‧‧Outer part

12C‧‧‧Connecting Department

13‧‧‧ head cover

13A‧‧‧The Department of Occlusion

13B‧‧‧Flange

13C‧‧‧ card ditch

18‧‧‧Waterproof ring

18A‧‧‧ ribs

55‧‧‧Clock Department

70‧‧‧Link construction

71‧‧‧ reference axis

72‧‧‧ openings

72L‧‧‧lower opening

72U‧‧‧ upper opening

73‧‧‧Connecting end

73A‧‧‧ ribs

73L‧‧‧Bottom connection end

73U‧‧‧Upper connection end

74‧‧‧Ontology

74A‧‧‧锷

74B‧‧‧ card ditch

74C‧‧‧ gap

75‧‧‧one side connection

76‧‧‧The other side connection

77‧‧‧Connecting terminal

79‧‧‧ cable

100‧‧‧Internal unit

Claims (4)

A connection structure for connecting adjacent electrical devices is used to connect a plurality of electrical devices each having a connection end portion forming an opening portion and arranged on a common reference axis via a connection member and a sealing member. a connection structure of the connection end portions of the electric machines in the pair of adjacent ones, wherein the connection member includes: one side connection portion that is coupled to the one of the electrical devices The connecting member is located at the connecting end of the one side electrical device on one side, and is fixed so as not to be rotatable relative to the reference axis; the other side connecting portion is connected to the pair of electrical machines in relation to the electrical device The connection member is located at the connection end of the other side electrical device on the other side, and is connected to be detachably attached to and rotatable about the reference axis; and the blocking portion blocks the one side electrical device And a closing portion of each of the openings of the other side electric device, which is formed to be electrically connected to the one side electric device The connection terminal of the other side electric device is exposed to the exposure hole of the other side electric device side, and the sealing member is connected to the one side electric device along the peripheral edge of the opening of the one side electric device. Between the portions, the one-side electric device and the one-side connecting portion are sealed. The connection structure for connecting adjacent electrical devices, as set forth in claim 1, wherein the one side connection portion is provided with the one side electric machine The connecting end portion of the device restricts an engaging portion that relatively rotates the one end side connecting portion to the connecting end portion of the one side electric device. A connection structure for joining adjacent electrical machines as set forth in claim 1 or 2, wherein at least one of said plurality of electrical machines is a signal display lamp. A signal display lamp is characterized in that it is coupled to another electrical device by a connection structure for connecting adjacent electrical devices as set forth in any one of claims 1 to 3.