JP2002231086A - Illumination structure of operating knob - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide at low cost an illumination structure of an operating knob that can steadily prevent leakage of illumination light at the front decorative part of an operating knob of a cursor switch. SOLUTION: The illumination structure of an operating knob comprises an operating axle that protrudes from the front face of the cursor switch body mounted on the substrate, a front decorative part, a hole that engages with the operating axles at the back face of the front part, an operating knob made of a cylinder part that is formed in cylindrical shape from the outer circumference of the front decorative part, a light-emitting element mounted at the vicinity of the cursor switch body, a light-guiding member that is provided at the front of the light-emitting element and guides the light of the light-emitting element to the front decorative part, and a panel which is composed of a light-guiding cylinder that has a hole inserting the cursor switch and the light-emitting element and guides light to the front decorative part and a light-reflecting part that is inclined from the vicinity of the outer circumference of the base of the light-guiding cylinder to the vicinity of the bottom part of the cylinder part. The light-reflecting part is formed so as to change the light route of the light that has been reflected at the inner face of the operating knob and has reached the vicinity of the bottom face, and return it to the inside of the operating knob.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to illumination of an operation knob fitted to an operation axis of a cursor switch for moving a cursor displayed on a display device, and more particularly, to an operation knob even when the cursor switch is operated. The present invention relates to an illumination structure of an operation knob that can illuminate more brightly and uniformly without leaking the illumination light to the outside.

[0002]

2. Description of the Related Art A conventional illumination structure of an operation knob of a cursor switch will be described with reference to FIG.

FIG. 6 is a schematic sectional view showing the illumination structure of a conventional operation knob of a cursor switch.

An operation shaft 7 of a cursor switch 71 for moving a cursor displayed on a display section of an electronic device mounted on an automobile or the like, for example, a navigation device.
3 is an illumination structure of the operation knob fitted to 3.

The illumination structure 70 of the operation knob includes a cursor switch 71, a light guide component 75, a light emitting element 77, a printed circuit board 78, an operation knob 80, a panel 90, and the like.

The cursor switch 71 includes a switch body 7
2 and an operation shaft 73. A switch for moving a cursor displayed on the display unit to a predetermined position by tilting the operation shaft 73 in a direction of inclination (for example, eight predetermined directions). Used as A light emitting element 77 (LED) that illuminates the operation knob 80 is mounted on the printed circuit board 78 near the outer periphery of the switch main body 72 (for example, in four predetermined directions).

The light guide component 75 guides the light of the light emitting element 77 mounted on the substrate 78 to the back of the operation knob 80 and illuminates the front design portion 82 of the operation knob 80.
Is disposed at a front portion (upper side in the figure) of the first embodiment. Light guide component 75
As a material of the above, a silicon-based or acrylic-based resin member is used, and is formed by resin molding.

The operation knob 80 has a cylindrical shape with a top plate, and has a front design portion 82 on which a design 81 such as a character or a symbol is formed on the top plate portion, and a cursor at the center of the back surface of the front design portion 82. Crown portion 83 inserted into operation shaft 73 of switch 71
Are formed, and a press-fit hole 84 that fits into the operation shaft 73 is formed in the crown 83. A milky white translucent resin member or the like is used for the skeleton portion 85 of the operation knob 80, and a desired non-translucent resin member is used for the outer peripheral portion 86 of the skeleton portion 85, which is formed by two-color molding. You. Then, the front design part 82 is illuminated by light from the back.
Also, after the operation knob 80 is formed by a two-color molding process and after the skeleton portion 85 is resin-molded with a translucent resin member,
The outer peripheral portion 86 of the skeleton portion 85 may be painted using a desired non-translucent paint, and a predetermined portion of the paint may be removed by laser processing or the like to form the front design portion 82. Alternatively, the entire knob can be illuminated with single color molding.

The panel 90 has a cylindrical portion 91 which is in contact with the outer periphery of the light guide component 75 and extends toward the inner peripheral portion of the cylindrical portion (for example, a cylinder) of the operation knob 80. A resin member is used as a material of the panel 90 and is formed by resin molding.

[0010]

However, in the above-described operation knob illumination structure 70, when the cursor switch 71 is operated, the light illuminating the front design portion 82 of the operation knob 80 is reflected by the inner surface of the operation knob 80, and is reflected. The leaked light leaks from the gap between the lower end of the operation knob 80 and the panel 90, and the leaked light leaks from the panel 9.
There is a problem that the light is reflected at 0 and leaks out of the operation knob 80. As a countermeasure against the above, for example, it is possible to cope with the problem by adding a light leakage prevention part (not shown).

An object of the present invention is to solve the above-mentioned problem, and to provide an inexpensive illumination structure of an operation knob which can surely prevent leakage of illumination light of a front design portion of an operation knob of a cursor switch. And

[0012]

SUMMARY OF THE INVENTION The present invention achieves the above-mentioned object, and comprises an operation shaft of a cursor switch, a front design portion, and an outer peripheral portion extending from the outer periphery of the front design portion toward the rear surface of the front design portion. An operating knob that allows the cursor switch to swing, an illuminating unit that illuminates the front design unit from the inside, and a guide that guides the illumination of the illuminating unit to the front design unit through the operation shaft. A light portion, and near the outer periphery of the light guide portion, a light reflecting portion that reflects light reflected by the inner surface of the operation knob and reaches near the end of the outer periphery to the inner surface direction of the operation knob. It is characterized by the following.

The light reflecting portion is inclined from the vicinity of the outer periphery of the light guide to the vicinity of the lower end of the outer periphery, and is reflected by the inner surface of the operation knob to reach the vicinity of the lower end of the outer periphery. The illumination light is formed so as to return toward the inner surface of the operation knob.

Further, the light reflecting portion is provided so as to be inclined from the vicinity of the outer periphery of the base of the light guide to the vicinity of the lower end of the outer periphery.

Further, the light reflecting portion is formed in a step shape from the vicinity of the outer periphery of the light guide to the vicinity of the lower end of the outer periphery.

Further, the light reflecting portion is characterized in that the stepped step surface is formed to be inclined.

An operation knob having an operation shaft of the cursor switch, a front design portion, and an outer peripheral portion extending from the outer periphery of the front design portion toward the rear surface of the front design portion, and enabling the cursor switch to swing. An illuminating means for illuminating the front design part from the inner surface, a light guiding part for inserting the operation shaft to guide illumination of the illuminating means to the front design part, and engaging with an inner diameter of an outer peripheral part of the operation knob. A light-shielding fin extending from the cylindrical portion toward the center toward the center of the light guide portion and reaching the vicinity of the distal end of the light guide portion; And a light shielding component formed so as to return toward the inner surface of the operation knob.

Further, the light-shielding component is formed of a non-light-transmitting synthetic rubber or resin member.

An operation knob having an operation shaft of the cursor switch, a front design part, and an outer peripheral part extending from the outer periphery of the front design part to the rear surface direction of the front design part, and enabling the cursor switch to swing. An illumination unit that illuminates the front design unit from the inner surface, a light guide unit that penetrates the operation shaft, and guides illumination of the illumination unit to the front design unit, and a tubular unit that engages with the light guide unit. The illumination extending outward from the cylindrical portion and elastically contacting the inner surface of the outer periphery of the operation knob, being reflected by the inner surface of the operation knob and reaching near the lower end surface of the outer periphery, the illumination is directed toward the inner surface of the operation knob. And a light-shielding component including a light-shielding fin formed so as to return.

Further, the light-shielding component is formed of a highly flexible non-light-transmitting synthetic rubber or resin member.

[0021]

FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIG.

FIG. 1 is a schematic sectional view showing the illumination structure of the operation knob of the cursor switch according to the first embodiment of the present invention.

Reference numeral 10 denotes an operation shaft 2 of a cursor switch 20 for moving a cursor displayed on an electronic device mounted on an automobile or the like, for example, a display unit of a navigation device.
2 is an illumination structure of the operation knob fitted to 2.

The illumination structure 10 of the operation knob includes a cursor switch 20, a light guide component 25, a light emitting element 27, a printed circuit board 28, an operation knob 30, a panel 37, and the like.

The cursor switch 20 is connected to the switch body 2
1 and an operation shaft 22. A switch for moving a cursor displayed on a display unit to a predetermined position by tilting the operation shaft 22 in a direction of inclination (for example, eight predetermined directions). Used as In the vicinity of the outer periphery of the switch body 21 (for example, in four predetermined directions), a light-emitting element 27 (LED corresponding to a light-emitting means) for illuminating the operation knob 30 is mounted on the printed circuit board 28.

The light guide component 25 diffuses the light of the light emitting element 27 mounted on the substrate 28 and guides the light to the back of the operation knob 30 to illuminate the front design part 31 of the operation knob 30. Is disposed at a front portion (upper side in the figure) of the first embodiment. As the material of the light guide component 25, a silicon or acrylic resin member is used, and is formed by resin molding.

The operation knob 30 has a cylindrical shape with a top plate. A front design portion 31 on which a design 36 such as a character or a symbol is formed on the top plate portion, and a cursor at the center of the back surface of the front design portion 31. Crown portion 32 inserted into operation shaft 22 of switch 20
Are formed, and a press-fit hole 33 that fits into the operation shaft 22 is formed in the crown portion 32. A milky white translucent resin member or the like is used for the skeleton portion 34 of the operation knob 30, and a desired non-translucent resin member is used for the outer peripheral surface 35 of the skeleton portion 34, which is formed by two-color molding. You. Then, the front design part 31 is illuminated by light from the back.
The operation knob 30 is formed by a two-color molding process, and after the skeleton portion 34 is resin-molded with a translucent resin member,
The front design part 31 can also be formed by painting the outer peripheral surface 35 of the skeleton part 34 with a desired non-translucent paint and removing a predetermined part of the paint by laser processing or the like.

The panel 37 is formed with a cylindrical portion 38 (corresponding to a light guide portion) which abuts on the outer periphery of the light guide component 25 and extends toward the inner periphery of the tube portion (for example, a cylinder) of the operation knob 30. ing. Then, from the outer periphery of the base of the cylindrical portion 38, the operation knob 30
A light reflecting portion 39 inclined downwardly of the cylindrical portion is formed. In the light reflecting portion 39, the light that is reflected by the inner surface of the operation knob 30 and leaks from the lower end portion of the operation knob 30 to the outside is reflected by the light reflecting portion 39, returns to the inside of the operation knob 30, and returns to the front design portion 31. Illumination light. A resin member is used as the material of the panel 37 and is formed by resin molding.

As described above, according to the illumination structure 10 of the operation knob of the cursor switch 20 according to the first embodiment of the present invention, the light reflecting portion 39 is formed on the outer periphery of the base of the cylindrical portion 38 of the panel 37. By doing so, the light reflected by the inner surface of the operation knob 30 is reflected by the light reflecting portion 39 and returns to the inside of the operation knob 30 again, so that the illumination light of the operation knob 30 is operated even when the cursor switch 20 is operated. The front design part 31 of the operation knob 30 can be brightly and uniformly illuminated without leaking to the outside of the knob 30. Therefore, the illumination quality can be improved and the cost can be reduced without increasing the number of components such as light shielding components.

Next, a second embodiment of the present invention will be described with reference to FIG.

FIG. 2 is a schematic sectional view showing an illumination structure of an operation knob of a cursor switch according to a second embodiment of the present invention. The second embodiment is a partial modification of the first embodiment, and the other components are substantially the same as those of the first embodiment. Is omitted.

The illumination structure 11 of the operation knob includes a cursor switch 20, a light guide component 25, a light emitting element 27, a printed circuit board 28, an operation knob 30, a panel 40, and the like.

The panel 40 has a cylindrical portion 41 (corresponding to a light guiding portion) which abuts on the outer periphery of the light guiding component 25 and extends toward the inner peripheral portion of the cylindrical portion (for example, a cylinder) of the operation knob 30. ing. Further, a step-like light reflecting portion 42 is formed, which descends from a substantially central portion of the outer periphery of the cylindrical portion 41 to below the cylindrical portion of the operation knob 30. In the light reflecting portion 42, light that is reflected on the inner surface of the operation knob 30 and is leaking to the outside from the lower end portion of the operation knob 30 is reflected by the light reflecting portion 42 and returns to the inside of the operation knob 30 again, and the front design portion 31. Illumination light.

Alternatively, the stair-shaped light reflecting portion 42 may be formed in a stair-like shape (not shown) descending from below the cylindrical portion of the operation knob 30 toward the outer peripheral direction of the base of the cylindrical portion 41 of the panel 40. . A resin member is used as the material of the panel 40 and is formed by resin molding.

As described above, in the illumination structure 11 of the operation knob of the cursor switch 20 according to the second embodiment of the present invention, the outer periphery of the cylindrical portion 41 of the panel 40 is similar to the first embodiment. Is provided with a step-like light reflecting portion 42, so that light reflected on the inner surface of the operation knob 30
Since the light is reflected by the respective step-shaped light reflecting portions 42 and returns to the inside of the operation knob 30 again, even when the cursor switch 20 is operated, the illumination light of the operation knob 30 is emitted from the operation knob 30.
, The front design part 31 of the operation knob 30 can be illuminated more brightly and uniformly. Therefore, the illumination quality can be improved and the cost can be reduced without increasing the number of components such as light shielding components.

Next, a third embodiment of the present invention will be described with reference to FIG.

FIG. 3 is a schematic sectional view showing the illumination structure of the operation knob of the cursor switch according to the third embodiment of the present invention. Note that the third embodiment is a modification of the second embodiment, and the others are substantially the same as the first and second embodiments. The description is omitted.

The illumination structure 12 of the operation knob includes a cursor switch 20, a light guide component 25, a light emitting element 27, a printed circuit board 28, an operation knob 30, a panel 45, and the like.

On the panel 45, a cylindrical portion 46 (corresponding to a light guiding portion) is formed which is in contact with the outer periphery of the light guiding component 25 and extends toward the inner peripheral portion of the cylindrical portion (for example, a cylinder) of the operation knob 30. ing. Further, a step-like light reflecting portion 47 is formed, which descends from a substantially central portion of the outer periphery of the cylindrical portion 46 toward a lower portion of the cylindrical portion of the operation knob 30. A slope is provided so as to descend toward. In the light reflecting portion 47, the light is reflected by the inner surface of the operation knob 30, and the operation knob 3
Light that is about to leak out from the lower end of the light reflecting portion 47
And is returned to the inside of the operation knob 30 again and the front design part 3
1 illumination light.

Alternatively, the stepped light reflecting portion 47 may be formed in a stepped shape (not shown) descending from below the cylindrical portion of the operation knob 30 toward the outer peripheral direction of the base of the cylindrical portion 46 of the panel 45. The same effect that is almost the same as that shown in FIG. 2 can be obtained. A resin member is used as a material of the panel 45 and is formed by resin molding.

As described above, in the illumination structure 12 of the operation knob of the cursor switch 20 according to the third embodiment of the present invention, the outer periphery of the cylindrical portion 46 of the panel 45 is similar to the second embodiment. A light reflecting portion 4 having a step-like shape and a gradient descending toward the center of the cylinder.
7, the light which is reflected on the inner surface of the operation knob 30 and leaks from the lower end portion of the operation knob 30 to the outside is reflected by each of the step-shaped light reflecting portions 47, and again the operation knob The cursor switch 20
Even when the operation is performed, the illumination light of the operation knob 30 does not leak to the outside of the operation knob 30, and the front design part 31 of the operation knob 30 can be illuminated more brightly and uniformly. Therefore, the illumination quality can be improved and the cost can be reduced without increasing the number of components such as light shielding components.

Next, a fourth embodiment of the present invention will be described with reference to FIG.

FIG. 4 is a schematic sectional view showing an illumination structure of an operation knob of a cursor switch according to a fourth embodiment of the present invention. Note that the fourth embodiment is a partial modification of the first embodiment, and the others are substantially the same as those of the first embodiment. Is omitted.

The illumination structure 13 of the operation knob includes a cursor switch 20, a light guide component 25, a light emitting element 27, a printed circuit board 28, an operation knob 30, a panel 50, a light shielding component 55, and the like.

The panel 50 is formed with a cylindrical portion 51 (corresponding to a light guiding portion) which is in contact with the outer periphery of the light guiding component 25 and extends toward the inner peripheral portion of the cylindrical portion (for example, a cylinder) of the operation knob 30. ing. A resin member is used as the material of the panel 50 and is formed by resin molding.

The light shielding component 55 has a cylindrical portion 56 that engages with the inner diameter of the cylindrical portion of the operation knob 30 and a light shielding fin 57 that projects from the lower end of the cylindrical portion 56 toward the center of the cylindrical portion 56. A non-translucent (for example, black) synthetic rubber member or resin member is used as a material of the light shielding component 55, and is formed by molding.

As described above, according to the illumination structure 13 of the operation knob of the cursor switch 20 according to the fourth embodiment of the present invention, by disposing the light shielding component 55 on the inner surface of the operation knob 30, Light that is reflected by the inner surface of the operation knob 30 and leaks out from the lower end of the operation knob 30 is reliably blocked by the light-blocking fins 57 of the light-blocking component 55 and the cylindrical portion 51 of the panel 50. Therefore, even when the cursor switch 20 is operated, the illumination light of the operation knob 30 does not leak to the outside of the operation knob 30, and the operation knob 30 can be illuminated more brightly and uniformly. The lighting quality can be improved. In addition, since the shapes of the components are simplified, the cost of the mold is reduced, which is effective in terms of cost.

By using the light shielding component 55 according to the fourth embodiment of the present invention together with the first, second and third embodiments, the illumination quality of the front design part 31 of the operation knob 30 can be reduced. It can be further improved.

Next, a fifth embodiment of the present invention will be described with reference to FIG.

FIG. 5 is a schematic sectional view showing an illumination structure of an operation knob of a cursor switch according to a fifth embodiment of the present invention. Note that the fifth embodiment is a partial modification of the first embodiment, and the other components are substantially the same as those of the first embodiment. Is omitted.

The illumination structure 14 of the operation knob includes a cursor switch 20, a light guide component 25, a light emitting element 27, a printed circuit board 28, an operation knob 30, a panel 60, a light shielding component 65, and the like.

The panel 60 is formed with a cylindrical portion 61 (corresponding to a light guiding portion) which abuts on the outer periphery of the light guiding component 25 and extends toward the inner peripheral portion of the cylindrical portion (for example, a cylinder) of the operation knob 30. ing. A resin member is used as a material of the panel 60 and is formed by resin molding.

The light-shielding part 65 is a cylindrical part 61 of the panel 60.
And a light-blocking fin 67 extending from the upper end of the cylindrical portion 66 toward the inner peripheral portion of the cylindrical portion of the operation knob 30. The outer diameter of the light-blocking fin 67 is formed larger than the inner diameter of the cylindrical portion of the operation knob 30 (to the extent that it is bent when engaged, and that there is no gap even when the cursor switch 20 is operated). The light shielding component 65 is formed of a highly flexible non-translucent (for example, black) synthetic rubber member or a resin member by molding.

As described above, according to the illumination structure 14 of the operation knob of the cursor switch 20 according to the fourth embodiment of the present invention, the light shielding fin 67 of the light shielding component 65 fixed to the cylindrical portion 61 of the panel 60. Is arranged in a bent state on the inner surface of the operation knob 30 so that the outer periphery of the operation knob 30 is in close contact with the inner surface of the operation knob 30. Since there is no gap, the illumination light can be completely prevented from leaking to the outside of the operation knob 30. Therefore, the front design part 31 of the operation knob 30 can be illuminated more brightly and uniformly, so that the illumination quality can be improved. In addition, since the shapes of the components are simplified, the cost of the mold is reduced and the cost is also effective.

In the present embodiment, the central portion of the light shielding fin 67 of the light shielding component 65 is bent toward the front design portion 31, but the same effect can be obtained in the opposite case. In addition, an effect can be obtained depending on the condition even if the elastic contact is not caused without bending.

[0056]

As described above, according to the present invention, it is possible to provide an inexpensive operation knob illumination structure which can reliably prevent the illumination light of the front design portion of the operation knob of the cursor switch from leaking. it can.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an illumination structure of an operation knob of a cursor switch according to a first embodiment of the present invention.

FIG. 2 is a schematic sectional view showing a lighting structure of an operation knob of a cursor switch according to a second embodiment of the present invention.

FIG. 3 is a schematic sectional view showing an illumination structure of an operation knob of a cursor switch according to a third embodiment of the present invention.

FIG. 4 is a schematic sectional view showing an illumination structure of an operation knob of a cursor switch according to a fourth embodiment of the present invention.

FIG. 5 is a schematic sectional view showing an illumination structure of an operation knob of a cursor switch according to a fifth embodiment of the present invention.

FIG. 6 is a schematic configuration sectional view showing an illumination structure of an operation knob of a conventional cursor switch.

[Explanation of symbols]

 10, 11, 12, 13, 14, ..illumination structure of operation knob 20..cursor switch 21..switch body 22..operation axis 25..light guide component 27..light emitting element 28..printed circuit board 30 .. Operation knob 31, front design part 32, crown part 33, press-fit hole 34, frame part 35, outer peripheral surface 36, design 37, 40, 45, 50, 60, panel 38, 41, 46 , 51, 56, 61, 66 ··· Cylindrical part 39, 42, 47 · · · Light reflecting part 55, 65 · · Light shielding parts 57, 67 · · · Light shielding fins

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5B020 AA17 DD03 DD27 5B087 AA09 AB04 BC02 BC19 5G006 JB03 JC02 JF23 JF27 LA01 5G052 AA21 BB01 HC04 JA02 JA06 JB05 JC04 JC10 JC20

Claims (9)

[Claims] 1. An operation knob having an operation shaft of a cursor switch, a front design part, and an outer peripheral part extending from the outer periphery of the front design part toward the rear surface of the front design part, and enabling the cursor switch to swing. An illuminating unit for illuminating the front design unit from the inner surface; a light guide unit that penetrates the operation shaft and guides illumination of the illumination unit to the front design unit; and an operation knob near an outer periphery of the light guide unit. And a light reflecting portion for reflecting the light reflected on the inner surface of the light source and reaching the vicinity of the end of the outer peripheral portion toward the inner surface of the operation knob. 2. The light reflecting portion is inclined from near the outer periphery of the light guide portion to near the lower end portion of the outer peripheral portion, and is reflected by the inner surface of the operation knob to reach near the lower end surface of the outer peripheral portion. The illumination structure for an operation knob according to claim 1, wherein the illumination is formed so as to return toward an inner surface of the operation knob. 3. The operation knob according to claim 1, wherein the light reflecting portion is provided so as to be inclined from near the outer periphery of the base of the light guide to near the lower end of the outer periphery. Lighting structure. 4. The illumination of the operation knob according to claim 1, wherein the light reflecting portion is formed in a step shape from a vicinity of an outer periphery of the light guide to a vicinity of a lower end of the outer periphery. Construction. 5. The illumination structure for an operation knob according to claim 4, wherein said light reflecting portion is formed such that said stepped step surface is inclined. 6. An operation knob having an operation shaft of a cursor switch, a front design part, and an outer peripheral part extending from the outer periphery of the front design part toward the rear surface of the front design part, and enabling the cursor switch to swing. An illumination means for illuminating the front design part from the inner surface; a light guide part for inserting the operation shaft to guide illumination of the illumination means to the front design part; and engaging an inner diameter of an outer peripheral part of the operation knob. A light-shielding fin extending from the cylindrical portion toward the center toward the center of the light guide portion and reaching the vicinity of the distal end of the light guide portion; and the light reflected by the inner surface of the operation knob and reaching near the lower end surface of the outer peripheral portion. And a light shielding component formed so as to return toward the inner surface of the operation knob. 7. The illumination structure for an operation knob according to claim 6, wherein the light shielding component is formed of a non-translucent synthetic rubber or a resin member. 8. An operation knob having an operation shaft of a cursor switch, a front design part, and an outer peripheral part extending from the outer periphery of the front design part toward the rear surface of the front design part, and enabling the cursor switch to swing. Illuminating means for illuminating the front design part from the inner surface, a light guide part that guides the illumination of the illuminating means to the front design part through the operation shaft, and a tubular part that engages with the light guide part. The illumination extending outward from the cylindrical portion and elastically contacting the inner surface of the outer periphery of the operation knob, being reflected by the inner surface of the operation knob and reaching near the lower end surface of the outer periphery, the illumination is directed toward the inner surface of the operation knob. And a light-shielding component having a light-shielding fin formed so as to return. 9. The illumination structure for an operation knob according to claim 8, wherein the light shielding component is formed of a highly flexible non-translucent synthetic rubber or resin member.