KR102633439B1 - Optical fiber fixing structure for lighting using lock retainer - Google Patents

Abstract

The present invention relates to a structure for fixing optical fibers for lighting using a lock retainer. In a lighting device using optical fibers, the separation distance between the light source and the optical fibers can be easily determined and the separation distance is always kept the same, thereby ensuring excellent lighting quality. The purpose is to provide a structure for fixing optical fibers for lighting using a lock retainer.
The lighting optical fiber fixing structure using a lock retainer according to the present invention includes a printed circuit board on which an LED is mounted in a housing with a predetermined space formed therein, and one end of the optical fiber connected to the LED while penetrating the housing is It is fixed via a lock retainer; An inner lens made of a cylindrical shape with one side open is installed at the LED formation point of the printed circuit board, and the lock retainer is made of a ring shape and is fixedly coupled to the outer peripheral surface of the inner lens and holds the optical fiber penetrating the inner peripheral surface. It is done to crack down on one side.

Description

Optical fiber fixing structure for lighting using a lock retainer {OPTICAL FIBER FIXING STRUCTURE FOR LIGHTING USING LOCK RETAINER}

The present invention relates to a structure for fixing optical fibers for lighting using a lock retainer, and more specifically, by applying a lock retainer of a specific shape to a lighting device using an optical fiber, the luminance and color coordinates of the lighting according to the change in the separation distance between the light source and the optical fiber. This relates to a structure for fixing optical fibers for lighting using a lock retainer to prevent misalignment.

In general, optical fibers are made of glass fibers with different densities and different refractive indices on the inside and outside, so that light is transmitted without loss through total reflection.

The optical fiber was mainly developed as a signal transmission technology related to communication, but recently its application field has been expanded to lighting parts. The optical fiber is produced from various materials, including plastic materials, instead of the existing glass fiber, and has a straight line. In addition to being able to implement various lighting shapes such as curves and lights, and with the development of LED technology, it is possible to express various colors, it is attracting attention as a lighting component.

The optical fiber has a continuous circular cross-section for stable transmission of light, is composed of a core and a outer shell (CLAD) for total reflection, and is manufactured through an extrusion process. , At this time, as it is difficult to secure peripheral parts and a fixation structure for the extruded optical fiber, a structure for fixation must be secured through a separate manufacturing process.

Meanwhile, in lighting devices using optical fibers as described above, management of the separation distance between the entrance part of the optical fiber adjacent to the LED light source, that is, the light entering part, has a significant impact on the quality of lighting.

As the distance between the LED light source and the optical fiber increases, it becomes more difficult to secure the luminance and color coordinates of the lighting set at the time of design, and also changes in the set separation distance due to thermal contraction and expansion, vibration and shock of the optical fiber depending on the temperature of use. , In addition, the distribution of separation distances due to the assembly process, etc. has a negative impact on lighting quality.

Accordingly, in the past, in order to improve lighting quality, a method of fixing the separation distance between adjacent parts and optical fibers was mainly used by applying heat-shrinkable tubes, but this caused the problem of causing inconvenience in the heat-shrinking process and increasing production time. , In addition, as the need for a separate dedicated facility for the heat shrinkable tube process increased, the investment cost increased, leading to the problem of poor economic feasibility.

Domestic registered utility model No. 20-0211994 Domestic Patent Publication No. 10-1999-0027946

Therefore, the present invention was devised to improve the conventional problems as described above, and its purpose is to easily determine the separation distance between the light source and the optical fiber in a lighting device using optical fibers and to ensure that the separation distance is always kept the same. The aim is to provide a lighting optical fiber fixing structure using a lock retainer to ensure excellent lighting quality.

Another object of the present invention is to provide an optical fiber for lighting using a lock retainer that prevents damage to the light source components by avoiding direct contact between the optical fiber and light source components such as LEDs and bulbs due to the cutting length plus tolerance of the optical fiber applied to the lighting device. The goal is to provide a fixed structure.

An optical fiber fixing structure for lighting using a lock retainer according to the present invention for achieving the above-described object includes a printed circuit board on which an LED is mounted in a housing having a predetermined space formed therein, and the printed circuit board is installed in the housing while penetrating the housing. One end of the optical fiber connected to the LED is fixed via a lock retainer; An inner lens made of a cylindrical shape with one side open is installed at the LED formation point of the printed circuit board, and the lock retainer is made of a ring shape and is fixedly coupled to the outer peripheral surface of the inner lens and holds the optical fiber penetrating the inner peripheral surface. It is characterized by being made to control one end.

Preferably, the lock retainer is formed in a ring shape with the center of the disc shape penetrating, and its inner and outer peripheral surfaces are each formed in a sawtooth shape, and the inner peripheral surface forming the sawtooth shape is bent downward at a certain inclination to interrupt the optical fiber. In addition to forming an intermittent portion for the outer peripheral surface in the shape of a sawtooth, a plurality of members are bent at regular intervals in a form extending downward to form an elastic piece that presses on the outer peripheral surface of the inner lens.

Preferably, the ceiling surface of the housing corresponding to the LED mounted on the printed circuit board is characterized in that a seating groove in which the integrally coupled inner lens and lock retainer are seated and fixed is formed to protrude in the form of a circular frame.

According to the present invention as described above, in a lighting device using an optical fiber, the separation distance between the light source and the optical fiber can be easily determined through a lock retainer of a specific structure, and at the same time, the separation distance can always be maintained the same. , it has the effect of securing excellent lighting quality with a simple structure.

At this time, since the lighting device is assembled with only a simple insertion process of optical fiber, it has the effect of shortening the assembly process and increasing productivity, thereby reducing investment costs by eliminating the need for additional production facilities. It also has an effect.

In addition, when an external force is applied in the direction in which the optical fiber is pulled after assembly, the fixing force is secured to prevent the optical fiber from coming off within the appropriate tensile force, thereby preventing arbitrary damage to the optical fiber, and the lighting device As the fixing force of the optical fiber is secured, there is an effect that defects in lighting quality due to the worker's process dispersion can be eliminated even when additional assembled parts and processes increase.

1 is a perspective view showing the appearance of a lighting module to which an optical fiber fixing structure for lighting using a lock retainer according to the present invention is applied;
2A and 2B are exploded perspective views showing the configuration of a lighting module to which an optical fiber fixing structure for lighting using a lock retainer according to the present invention is applied;
Figure 3 is a perspective view showing the configuration of a lock retainer applied to an optical fiber fixing structure for lighting using a lock retainer according to the present invention;
Figure 4 is a front cross-sectional view and a partially enlarged view showing a structure for fixing an optical fiber for lighting using a lock retainer according to the present invention.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

Figure 1 is a perspective view showing the appearance of a lighting module to which an optical fiber fixing structure for lighting using a lock retainer according to the present invention is applied, and Figures 2a and 2b show the configuration of a lighting module to which an optical fiber fixing structure for lighting using a lock retainer according to the present invention is applied. Figure 3 is a perspective view showing the configuration of the lock retainer applied to the lighting optical fiber fixing structure using the lock retainer according to the present invention, Figure 4 is a front cross-sectional view showing the lighting optical fiber fixing structure using the lock retainer according to the present invention, and This is a partially enlarged view.

First, the structure for fixing an optical fiber for lighting using a lock retainer according to the present invention is such that the separation distance between the LED 42 and the optical fiber 70 provided as a light source in a lighting device using an optical fiber 70 applied as an indoor mood light, etc. It is implemented to ensure excellent lighting quality while maintaining optimal conditions.

To this end, the optical fiber fixing structure for lighting using a lock retainer according to an embodiment of the present invention includes the LED ( One end of the optical fiber 70 connected to 42) is configured to be firmly fixed and installed via an inner lens 50 and a lock retainer 60 having a specific structure.

In an embodiment of the present invention, the printed circuit board 40 on which the LED 42 is mounted has an approximately rectangular shape, and the housing 10 in which the printed circuit board 40 is embedded has a corresponding approximately It is made in the shape of a rectangular parallelepiped, and of course, the size and shape of the printed circuit board 40 and the housing 10 can be changed to various sizes and shapes depending on the environment in which the lighting device is applied.

According to an embodiment of the present invention, the housing 10 includes a body 20 having a substantially rectangular parallelepiped shape with an open lower surface and a cover 30 having a substantially square plate shape, and a plurality of coupling holes formed to correspond to each other ( 22) and the hook structure via the geolteok 32, and are configured to form an approximately rectangular parallelepiped shape with a predetermined space formed therein.

In addition, a printed circuit board 40 having a substantially rectangular plate shape is mounted on the cover 30, and the printed circuit board 40 on which the LED 42 is mounted is firmly fixed to the housing 10. It is made to be built-in.

At this time, an optical fiber entry hole 24 is formed through the upper surface of the body 20 corresponding to the LED 42 mounted on the printed circuit board 40 to allow one end of the optical fiber 70 to enter from the outside. On the ceiling surface of the body 20 around the optical fiber entry hole 24, a seating groove 26 is formed in the form of a circular frame so that the inner lens 50 and the lock retainer 60, which are integrally coupled, are seated and fixed. It is formed by protruding.

Accordingly, an inner lens 50 and a lock retainer 60 of a specific structure are installed as an integrated structure at the formation point of the LED 42 mounted on the printed circuit board 40, and the optical fiber 70 is connected through this. One end is configured to be fixedly installed with a certain distance apart.

The inner lens 50 has a substantially cylindrical shape with one side open, and the lower portion is an extension with an increased diameter so that the LEDs 42 mounted on the printed circuit board 40 are positioned spaced apart. It is formed as a portion 52, and a lens portion 58 is formed on the inner peripheral surface of the expansion portion 52 so that one end of the inserted optical fiber comes into contact with it, and the lock retainer 60 is interrupted along a certain point on the outer peripheral surface of the upper portion. To this end, the coupling groove 54 is formed by being recessed.

Reference numeral 56 denotes a plurality of ribs formed on the outer peripheral surface of the coupling groove 54 to reinforce the inner lens 50.

The lock retainer 60 is made of a metal material or a high-strength plastic material with a predetermined elastic force in a roughly ring shape and is fixedly coupled through the outer peripheral surface of the inner lens 50, and the optical fiber (60) penetrates the inner peripheral surface. It is configured to control one end of 70).

As shown in FIG. 3, the lock retainer 60 is roughly disk-shaped, with the center penetrating, forming a ring shape, and its inner and outer peripheral surfaces are each roughly tooth-shaped.

As described above, the inner peripheral surface of the lock retainer 60, which is roughly in the shape of a sawtooth, is bent in a round shape with a certain inclination downward, and the end thereof forms an intermittent portion 62 that interrupts the outer peripheral surface of the optical fiber 70. In addition, grooves 64 are formed between the intermittent portions 62.

Each intermittent unit 62 is preferably configured so that its plane has a substantially trapezoidal shape.

On the outer peripheral surface of the lock retainer 60, which has a substantially sawtooth shape, a plurality of members (in the embodiment of the present invention, three at 120° intervals) are bent in a downwardly extending form at regular intervals to form the inner lens ( It is configured to form an elastic piece 66 that presses the outer peripheral surface of 50).

The elastic piece 66 is formed to have a curved side cross-section approximately in the shape of "∫", so that the curved inner surface is interrupted by a predetermined elastic force in the coupling groove 54 of the inner lens 50.

Accordingly, the lock retainer 60 is fixedly coupled to the inner lens 50 via a plurality of elastic pieces 66 to form a mutually integrated structure, and the seating groove 26 of the body 20 of the housing 10 While seated in the state corresponding to the LED 42 of the printed circuit board 40, one end of the optical fiber 70 is spaced apart and fixed in a state corresponding to the LED 42.

Next, the operation of the present invention achieved as described above will be explained with reference to the drawings as follows.

When the lighting optical fiber fixing structure using a lock retainer according to an embodiment of the present invention is applied to a predetermined lighting module, first, the lock retainer 60 is attached to the inner lens 50 via a plurality of elastic pieces 66. They are combined and provided as an integrated structure.

As described above, the inner lens 50 and the lock retainer 60, which form an integrated structure, are seated in the seating groove 26 provided on the ceiling of the body 20 of the housing 10, and the printed circuit As the cover 30 on which the substrate 40 is mounted is combined with the body 20, the integrated structure including the inner lens 50 and the lock retainer 60 is printed inside the housing 10. It can be positioned correspondingly on the LED 42 of the circuit board 40.

Thereafter, one end of the optical fiber 70 having a certain length is inserted through the optical fiber entry hole 24 of the housing 10 and pushed until it contacts the inner lens 50 and is interrupted, thereby disconnecting the optical fiber. (70) The outer peripheral surface of the one end side is firmly fixed by being interrupted by the intermittent part 62 of the lock retainer 60, so that it can be configured as a lighting device assembly.

At this time, the inner lens 50 acts to maintain a certain distance from the LED 42 mounted on the printed circuit board 40, preventing random damage that may occur when the LED 42 is in direct contact. It performs the function of preventing damage and at the same time performs the function of firmly fixing the lock retainer 60.

And, one end of the optical fiber 70 introduced into the housing 10 is firmly fixed within the housing 10 via the lock retainer 60 while in contact with the lens portion 58 of the inner lens 50. This makes it possible to avoid direct contact with light source components and provide stable quality lighting.

In addition, the optical fiber 70 passing through the lock retainer 60 is pressurized and fixed to the intermittent portion 62 of the lock retainer 60 in the form of a plurality of point contacts or line contacts with only the clad portion. It is possible to prevent the lighting quality from being arbitrarily affected by damage to the optical fiber 70.

Meanwhile, although preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and the technology to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various variations and modifications are possible by those skilled in the art, and these variations and modifications should not be understood individually from the technical idea or perspective of the present invention.

10: housing, 20: body,
22: coupling hole, 24: optical fiber entry hole,
26: seating groove, 30: cover,
32: Geolteok, 40: Printed circuit board,
42: LED, 50: inner lens,
52: expansion part, 54: coupling groove,
56: rib, 58: lens portion,
60: lock retainer, 62: fastening unit,
64: groove, 66: elastic piece,
70: Optical fiber.

Claims (3)

A printed circuit board on which an LED is mounted is built into a housing having a predetermined space formed therein, and one end of an optical fiber connected to the LED while penetrating the housing is fixed via a lock retainer, and the LED of the printed circuit board is An inner lens made of a cylindrical shape with one side open is installed at the forming point, and the lock retainer is made of a ring shape and is fixedly coupled to the outer peripheral surface of the inner lens to control one end of the optical fiber penetrating the inner peripheral surface. In the optical fiber fixing structure for lighting,
The inner lens is,
It has a cylindrical shape with one side open, and the lower part is formed as an extension with an increased diameter so that the LED mounted on the printed circuit board is positioned in a spaced state, and one end of the optical fiber is inserted into the inner peripheral surface of the extension. A lens portion is formed to come into contact with the upper portion, and a coupling groove for intermitting the lock retainer is recessed along a certain point of the outer circumferential surface of the upper portion.
The lock retainer is,
The center of the disc shape is penetrated to form a ring shape, and its inner and outer peripheral surfaces are each formed in a sawtooth shape, and the inner peripheral surface forming the sawtooth shape is bent downward at a certain angle to form an intermittent portion for intermittent optical fiber, and the intermittent portion is formed. Grooves are formed between the parts, and the plane of each interrupted part has a trapezoidal shape, and on the outer circumferential surface forming a sawtooth shape, a plurality of members are bent in a form extending downward at regular intervals to form an outer circumferential surface of the inner lens. Forms an elastic piece that presses, wherein three elastic pieces are formed at 120° intervals from each other, and the side cross section is curved in a "∫" shape so that the curved inner surface is connected to the coupling groove of the inner lens through elastic force. An optical fiber fixing structure for lighting using a lock retainer, characterized by being configured to be interrupted. delete According to clause 1,
A lighting device using a lock retainer, characterized in that the ceiling surface of the housing corresponding to the LED mounted on the printed circuit board has a seating groove in which the integrally coupled inner lens and the lock retainer are seated and fixed, protruding in the form of a circular frame. Optical fiber fixing structure.

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