JPH0538616U - Lens fixing structure - Google Patents

Abstract

(57) [Abstract] [Purpose] A lens fixing structure for fixing a lens to a panel in a device equipped with a lens that guides light of a lamp such as an LED to the outside. [Structure] 1 is a panel, in which a lens insertion hole 2 and a projection 3 with a guide groove are provided at two positions at a predetermined interval, and a lens 4 has a lens projection 6 corresponding to the lens insertion hole 2
The guide rail portion 5 corresponding to the guide groove of the panel is integrally formed. The LED lamp 7 is attached to the printed wiring board 8 in advance. The guide rail portion 5 of the lens 4 is inserted along the guide groove of the projection portion 3 with the guide groove of the panel 1, the lens convex portion 6 is fitted into the lens insertion hole 2 of the panel 1, and then the printed wiring board 8 is attached. The lens 4 is fixed to the panel by coming into contact with the rear portion of the lens 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device to which a lamp such as an LED is attached, and relates to a lens fixing structure.

[0002]

[Prior Art]

 As for the method of fixing the lens that guides the light of the lamp such as the LED to the outside in the device to which the lamp such as the LED is attached, as shown in FIG. It is fixed by welding the tip of the protruding portion after inserting the two mounting holes provided in the lens 14 into the protruding portion 13 at two intervals, but it takes time and effort for welding. If there is a problem in mounting or mounting, there is a problem that the panel needs to be replaced because there is no protrusion for welding. Further, as shown in FIG. 3 (B), two protrusions 23 each having a nail at the tip end are provided at predetermined intervals on the back side of the panel 21, and the lens 24 is strongly pressed from the portion having the nail. Although there is a fixing method of fitting, it is not common because it is difficult to form the claw portion due to the structure of the panel molding die.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of such a point, and it is not necessary to weld a boss-shaped protrusion of a panel or to form a protrusion having a claw at a tip end for fixing a lens. A lens fixing structure is provided.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a pair of protrusions with a lens insertion hole and a guide groove on the panel, forms a lens convex portion and a guide rail portion on the lens, and mounts the lens guide rail portion. Insert it along the guide grooves of a pair of protrusions on the panel, insert the lens protrusion into the lens insertion hole of the panel, and abut the print wiring board with the LED or other lamp attached from the rear of the lens to remove the lens. It provides a lens fixing structure that is fixed to a panel.

[0005]

[Action]

 With the above-mentioned structure, in the lens fixing structure according to the present invention, the lens guide rail is inserted along the guide groove of the panel, and the printed wiring board with the LED lamp is fixed to the lens. Since the lens is fixed by abutting against the rear part of the lens, it is not necessary to weld the projection of the panel or to provide the projection with the claw for fixing the lens.

[0006]

【Example】

 An embodiment of a lens fixing method according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional view of an essential part of an embodiment of a lens fixing structure according to the present invention, and FIG. 2 is an exploded perspective view of an embodiment of a panel and a lens according to the present invention. In the figure, reference numeral 1 denotes a panel, which is provided with a lens insertion hole 2 and a projection portion 3 with a guide groove at two predetermined intervals, and a lens 4 has a lens convex portion 6 corresponding to the lens insertion hole 2 of the panel. A guide rail portion 5 corresponding to the guide groove of the panel is integrally formed. The LED lamp 7 is attached to the printed wiring board 8 in advance. The guide rail portion 5 of the lens 4 is inserted along the guide groove of the protrusion 3 with the guide groove of the panel 1, the lens convex portion 6 is fitted into the lens insertion hole 2 of the panel 1, and then the LED lamp 7 The lens 4 is fixed to the panel 1 by bringing the attached printed wiring board 8 into contact with the rear portion of the lens 4.

[0007]

[Effect of the device]

 As described above, in the lens fixing method according to the present invention, the guide rail of the lens is inserted along the guide groove of the panel, and the printed wiring board having the LED lamp is fixed so that the lens is fixed. Since the lens is fixed by abutting from the rear part, it is not necessary to weld the projection of the panel or provide the projection with the claw for fixing the lens.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment of a lens fixing structure according to the present invention.

FIG. 2 is an exploded perspective view of an embodiment of a panel and a lens according to the present invention.

FIG. 3 is a cross-sectional view of a main part of an example of a conventional lens fixing structure.

[Explanation of symbols]

 1 Panel 2 Lens Insertion Hole 3 Protrusion with Guide Groove 4 Lens 5 Guide Rail 6 Lens Convex 7 LED Lamp 8 Printed Wiring Board 11 Panel 13 Projection 21 Panel 23 Projection

Claims (1)

[Scope of utility model registration request] 1. A device equipped with a lens for guiding the light of a lamp such as an LED to the outside, wherein a panel is provided with a pair of protrusions having a lens insertion hole and a guide groove, and the lens has a lens protrusion and a guide rail. Formed, insert the guide rail part of the lens along the guide groove of the pair of protrusions of the panel,
Insert the convex part of the lens into the lens insertion hole of the panel,
A lens fixing structure characterized in that a printed wiring board having a lamp attached thereto is brought into contact with the rear portion of the lens to fix the lens to the panel.