JPH0529320Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a device for illuminating the vicinity of a key insertion slot of a steering lock or the like in a ring shape.

[Background of the idea]

Figures 3 to 5 show a conventional steering lock illumination device that surrounds the steering lock key insertion slot in order to clearly display the position of the steering lock key insertion slot in dark places such as at night. be. In the figure, 1 is a column cover, 2 is a steering lock embedded in the column cover 1, and a light guide 3 formed in an annular shape made of a transparent material is fitted onto the outer peripheral surface of the steering lock 2. ing. A lamp case 4 is placed on the side of the light guide 3, and a lighting bulb 5 is placed inside the lamp case 4.
It's decorated. Reference numeral 6 denotes a light entrance part protruding from the side surface of the light guide 3, and this light entrance part 6
is provided at a position close to the illumination bulb 5.
Furthermore, the above-mentioned lamp case 4 has a light guide 3.
A locking claw 7 protruding from the side surface of the lamp case 4
It is fixed to the light guide 3 by a locking action with a protrusion 8 protruding from the light guide 3 . Further, the inner end surface of the light guide 3 is formed with a light reflecting surface 9 and a cutout step 10 for preventing interference with other objects. Note that 11 indicates a key.

In such a conventional steering lock lighting device, since the light guide 3 is provided with a knurled light reflecting surface 9 on its inner end surface, when the light guide 3 is viewed from the front side (front), In addition to the fact that the light guide 3 does not look very bright, the notch step 10 formed in the light guide 3 is visible from the front side of the light guide 3, detracting from its aesthetic appearance.

[Means for solving problems]

The present invention was devised by focusing on the various problems of the conventional methods, and was developed by using a ring-shaped light guide.
The light guide is divided into two in the axial direction, and a light reflective layer is set on the divided surface, and both divided members are concentrically combined to form a light reflective layer in the middle part of the light guide.

[Effect]

As a result, the light reflecting layer provides a high illumination effect, and the notch steps formed on the inner end face of the light guide are difficult to see from the outside, thereby enhancing the aesthetic effect.

[Example of idea]

The present invention will be explained in detail below based on the embodiment shown in FIGS. 1 and 2. The same parts between the structure in this embodiment and the structure shown in the conventional example are given the same reference numerals as in the conventional example, and the explanation of the same structural parts will be omitted.

Reference numeral 15 denotes the structure of the light guide of this embodiment, and this light guide 15 is a cylindrical one made of resin such as acrylic and is fitted and held on the outer peripheral surface of the steering lock 7, as in the conventional example. . This light guide 15 is constructed by concentrically combining a back side ring member 16 and a front side ring member 17 formed of a transparent material, and the joint end surface of the back side ring member 16 and front side ring member 17 is an annular groove 18 for concentrically coupling and holding the ring members 16 and 17; and an annular groove 1
An annular protrusion 19 is formed to fit into the groove 8 . Further, the surface of the back side ring member 16 facing the front side ring member 17 may be satin-finished, knurled, or
It is formed on the light diffusing surface 20 such as a white transparent layer. Further, on the outer surface of the back side ring member 16, a light entrance part 6 and a lamp case 4 for holding an illumination bulb 5 which is brought close to the light entrance part 6 are provided.

In this way, the light guide 15 in this embodiment
Since the cylindrical body is divided into two in the axial direction and a light diffusing surface 20 is formed on the divided surface, the light from the illumination bulb 5 is transmitted from the light entrance part 6 of the back side ring member 16 to the light guide 15. is injected into the interior of the The light incident into the light guide 15 enters the front ring member 17 through the annular groove 18 and the annular protrusion 19.
After being reflected on the front surface of the front ring member 17, the light is reflected and emitted from the light diffusing surface 20, so that this light emitting surface can be seen from the outside through the front ring member 17. Therefore, the outer periphery of the steering lock 7 can be illuminated in a ring shape. In addition, the stepped portion 10 formed at the rear end of the back side ring member 16 cannot be seen through the surface of the front side ring member 17 due to the light diffusion surface 20, which may impair the aesthetic appearance. The problem can be solved.

[Summary of the idea]

As described above, the present invention provides steering lock 7
A ring-shaped light guide 15 made of a transparent material that fits into the insertion end of the key 11 is attached to the surface ring member 1.
7 and a back ring member 16 located inside thereof are fitted concentrically, and the back ring member 1
A light diffusing surface 20 is provided along the joint end of the light guide 16 with the front ring member 17, and a light source 5 is provided on the back ring member 16 to allow light to enter inside thereof. Steps and the like are no longer seen through the front side of the light guide 15, so that the aesthetic effect is not impaired. Further, the reflection of light by the light diffusing surface 20 has the effect that the annular circumferential surface of the surface ring member 16 of the light guide 15 can be effectively displayed by emitting light.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing an embodiment of the steering lock illumination device according to the present invention, FIG. 2 is an enlarged sectional view of section A in FIG. 1, and FIG. 3 is a sectional view showing a conventional example thereof. Figure 4 is its front view, Figure 5
The figure is a sectional view taken along the line V-V in FIG. 3. 15... Light guide, 16... Back side ring member, 17... Front side ring member, 18... Annular groove,
19...Protrusion, 20...Light diffusion surface.

Claims (1)

[Scope of utility model registration request] A ring-shaped light guide 15 made of a transparent material that fits into the insertion end of the key 11 of the key cylinder 7 is constructed by concentrically fitting a front ring member 17 and a back ring member 16 located inside the front ring member 17. A keyhole characterized in that a light diffusing surface 20 is provided along the joint end of the back ring member 16 with the front ring member 17, and a light source 5 is provided in the back ring member 16 to allow light to enter therein. lighting equipment.