JP2013205432A - Led lamp for double track optical fiber cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lamp for a double track optical fiber that can radiate as strong light of a plurality of LED light emitting sources is expanded that is guided to a remote place from the light source by a double track optical fiber cable.SOLUTION: An LED lamp for a double track optical fiber cable includes: a light emission ferrule 2 that penetrates a plurality of optical fiber holes 1; an end part concave lens 3a that is mounted so as to entirely cover each tip 1a of the optical fiber hole 1 via lens supporting means 8 provided at the tip 2a of the light emission ferrule 2; and double track optical fiber cable 18 having a plurality of optical fiber 5 whose terminal parts 5b are provided by making a plurality of LED light emitting sources 6 approach and whose tip parts 5a are made to be inserted from a rear end part side 1b of each optical fiber hole 1 to the tip 1a.

Description

  The present invention is used for illumination of buildings such as houses and office buildings, vehicles such as automobiles and airplanes, and irradiates light transmitted from an LED light source via an optical fiber cable. It is related with the LED lamp with which is mounted.

Conventional LED light bulbs, LED flashlights, LED signboards, and the like are all lighting fixtures in which LED light sources are integrated. For these, a single LED has a small amount of light and is not suitable for illumination. For this reason, in order to use it for illumination, it is necessary to increase the amount of light by arranging a large number of LED light emitting sources.
In addition, there is an illuminator using a plurality of optical fiber cables having one optical fiber, but the light obtained from one LED light source is thin, and even if a plurality of light sources are collected, light with uniform and high illuminance cannot be obtained. Until now it has not been used as a full-fledged lighting.
On the other hand, the present inventor has previously proposed an “optical cable connector” of Patent Document 1 that allows easy connection of a double-wire optical fiber cable. With this “optical cable connector”, it has become possible to accurately connect multi-fiber optical fiber cables that were difficult to connect. And since the connection technology of the above-mentioned double-line optical cable has been established in the communication field, the present inventor believes that strong illumination with the double-line optical fiber cable should be obtained and illumination should be possible also in the lighting field. Has also devised.

JP2008-180822

  In view of the above circumstances, the present invention accepts light from a plurality of LED light sources into a plurality of optical fibers in a single double fiber optic cable, and guides the light to the illumination lamp with the double fiber optic cable. An object of the present invention is to provide an LED lamp for a double-fiber optical fiber cable that can turn on an illumination lamp with strong light obtained by adding together.

  In order to solve the above-mentioned problem, in the invention of claim 1 in the LED lamp for double-wire optical fiber cable according to the present invention, a light emitting ferrule penetrating a plurality of optical fiber holes and a tip of the light emitting ferrule are provided. An end concave lens that is mounted so as to cover each or all of the tip ends of the optical fiber holes via lens support means, and a terminal portion that faces a plurality of LED emission sources, and a tip portion of each optical fiber hole is provided. And a multi-wire optical fiber cable having a plurality of optical fibers inserted from the rear end side to the front end portion.

  According to a second aspect of the present invention, there is provided the light emitting ferrule having the plurality of optical fiber holes penetrating therein, and the optical fiber holes at positions matching the rear end portions of the optical fiber holes of the light emitting ferrule. A connection ferrule penetrating the optical fiber, an end concave lens mounted so as to cover each or all of the distal end portions of the optical fiber hole via lens support means provided at the distal end portion of the light emitting ferrule, and the light emitting ferrule And the connection ferrule, the connection maintaining means for connecting the rear end portions of both optical fiber holes and the front end portions of the optical fiber holes, and the rear end portions of the optical fiber holes of the light emitting ferrule. Each optical fiber inserted from the tip to the tip, and a plurality of optical fibers exposed from the tip while providing a plurality of LED light sources facing the end A multi-wire optical fiber cable having a plurality of optical fibers with the front end portion inserted from the rear end side of each optical fiber hole of the connection ferrule to the front end portion, and a transparent filling between the end portions of the light emitting ferrule and the connection ferrule And a convex lens disposed between the end portions.

  According to a third aspect of the present invention, in the above invention, the lens support means matches the position of the support frame fixed to the light emitting ferrule and the tip of each optical fiber hole in the support frame. And a lens fitting hole formed to have the same size as the diameter of each optical fiber hole or a lens fitting hole formed to cover the entire end of the light emitting ferrule.

  The invention according to claim 4 is characterized in that in the above invention, an outer concave lens having a size covering the entire end portion of the light emitting ferrule is arranged outside the end concave lens.

The present invention guides light with a double-wire optical fiber cable without attenuating light to a distance away from a plurality of LED light sources, and combines the light of a plurality of optical fibers into one at the tip of a light emitting ferrule provided at the tip. It can be turned on with light.
At that time, the thin light emitted from the front ends of the plurality of optical fibers is gathered and greatly enlarged by the end concave lens, and a wide range of illumination with light capable of obtaining high illuminance becomes possible.

  In the invention according to claim 2, the light output ferrule and the connection ferrule which are the connection maintaining means can reliably connect the plurality of optical fibers of the double-wire optical fiber cable at an accurate position. Maintenance such as lamp repair and replacement can be easily performed.

  According to a third aspect of the present invention, by fixing an end concave lens to a lens fitting frame provided on the lens support means, it is possible to stably fix at the position of the tip of each optical fiber hole of the ferrule. It becomes possible. Further, it becomes possible to attach the end concave lens more easily than directly fixing to the tip of each optical fiber hole of the ferrule.

  In the invention described in claim 4, the outer concave lens having a size covering the entire end concave lens is disposed between the end concave lens and the lens cover, so that the thin light that cannot be sufficiently enlarged only by the end concave lens. It is possible to further expand the light and irradiate light over a wider range.

It is a vertical side view which shows this invention. It is a vertical side view which shows another form. It is a vertical side view which shows another form. It is a vertical side view which shows another form.

Embodiments of the present invention will be described in detail below.
As shown in FIGS. 1 and 2, the LED lamp for a multi-line optical fiber according to the present invention has a configuration in which each optical fiber 5 is directly connected to a light emitting ferrule 2 in which end concave lenses 3 and 3a are attached to the front end portion 2a. 3 and FIG. 4, each optical fiber 5 is connected to a connection ferrule 16, and the connection ferrule 16 is further connected via a connection maintaining means 20 to a light emitting ferrule 15 in which end concave lenses 3 and 3 a are attached to a distal end portion 15 c. There is a form to connect to.

First, the former form will be described.
In this embodiment, as shown in FIGS. 1 and 2, the end concave lenses 3, 3 a are connected to the tip end 1 a of each optical fiber hole 1 of the light emitting ferrule 2 through which the plurality of optical fiber holes 1 are provided via the lens support means 8. Wear.
The light emitting ferrule 2 is held inside by a rear socket 12 on the outside and a front socket 13 screwed by a female screw portion 13b formed on the inner peripheral surface of the male screw portion 12c of the rear socket 12. .

  As shown in FIG. 2, the end concave lens 3 is individually attached to the distal end portion 1a of each optical fiber hole 1, and the end concave lens 3a is attached to the optical fiber hole 1 as shown in FIG. It is possible to have a configuration in which the tip portions 1a are mounted so as to cover the whole.

  Further, the periphery is fitted to a fitting portion 13a formed at the front end portion of the front socket 13, and the entire outside of each of the end concave lenses 3, 3a is covered with a transparent or translucent dome-shaped lens cover 4.

As shown in FIGS. 1 and 2, the end portions 5 b of the plurality of optical fibers 5 in the double-line optical fiber cable 11 are provided so as to face the plurality of LED issuing sources 6. Each optical fiber 5 is inserted into the front end 2a of the light emitting ferrule 2 through the cable insertion hole 12a of the rear socket 12 at the place where the light is installed. For this reason, the front end 5a of each optical fiber 5 is mounted so as to reach the front end 1a from the rear end 1b side of each optical fiber hole 1.
As described above, in the present invention, the light from each LED light source 6 incident from the end portion 5b of each optical fiber 5 is emitted from the distal end portion 1a of each optical fiber hole 1, and further, A thin light beam is enlarged and emitted from the lens cover 4 by the end concave lenses 3 and 3a attached to the front end portion 1a, so that a wide range can be illuminated.

For example, as shown in FIG. 1, the lens supporting means 8 has one lens fitting hole so that the lens fitting frame 9 fixed to the light emitting ferrule 2 covers each tip 1 a of each optical fiber hole 1. 9a is provided, and one large end concave lens 3a is supported in the lens fitting hole 9a.
In addition to this, as shown in FIG. 2, the lens fitting frame 9 fixed to the light emitting ferrule 2 is aligned with the tip 1a of each optical fiber hole 1 so that the lens fitting holes 9a are respectively provided. It is possible to fit the small end concave lens 3 to each lens fitting hole 9a.
When each of these small end concave lenses 3 is fitted, the focal length can be shortened, so that the enlargement magnification can be easily increased, and when one large end concave lens 3a is used, there is an advantage that manufacture is easy. .
The end concave lens 3 can be fixed to the lens fitting hole 9a by using an adhesive.
In addition, since the small end concave lens 3 has a coating layer of a reflection film and a protective film on the outer periphery of the optical fiber, and light passes through the center, it can be attached to the end of the optical fiber hole 1 via an O-ring. It is.

  The lens fitting frame 9 is fixed to the light emitting ferrule 2 by providing the light emitting ferrule 2 with a flange portion 2c, overlapping the flange portion 2c and the outer peripheral portion of the lens fitting frame 9, and surrounding the lens supporting member holding portion. 14, and the rear portion of the lens support gripping portion 14 is sandwiched and fixed by the front end portion 12 b of the rear socket 12 with the flange portion 2 c of the ferrule 2.

  Furthermore, an outer concave lens 7 having a size covering the entire end concave lens 3, 3 a can be disposed between the end concave lens 3, 3 a and the lens cover 4. In this embodiment, the outer concave lens 7 expands the light emitted from the distal end portion 1a of each optical fiber hole 1 by the end concave lenses 3, 3a, and further expands the expanded light, enabling a wider range of illumination. Become.

With the above structure, the light from each LED light source 6 on the LED substrate 10 is incident from the end portion 5b of each optical fiber 5, and the light guided to the illumination place by the double-wire optical fiber cable 11 is each optical fiber 5. From the front end 5a of the lens, it is enlarged by the end concave lens 3 and further enlarged by the outer concave lens 7, and is emitted from the lens cover 4 in a wide range.
The expanded light is based on the strong light that is the sum of the light from the plurality of LED light sources 6 as a whole. For this reason, in this invention, it becomes possible to illuminate with light with high illuminance in a wide range.

  Next, an embodiment in which the latter ferrule is divided into the light emitting ferrule 15 and the connection ferrule 16 and both can be connected by the connection maintaining means 20 will be described.

  In this embodiment, as shown in FIGS. 3 and 4, the light exit ferrule 15 that penetrates the plurality of optical fiber holes 17, and the rear end portion 17 b of each optical fiber hole 17 of the light exit ferrule 15 are aligned with each other. The connection ferrule 16 having the optical fiber holes 18 penetrating them is used in a coupled manner.

  The rear end portion 17b of each optical fiber hole 17 penetrating the light emitting ferrule 15 and the tip end portion 18a of each optical fiber hole 18 penetrating the connecting ferrule 16 are connected by accurately matching all the positions. The connection maintaining means 20 made possible is provided.

The connection maintaining means 20 can take various forms. For example, as shown in FIG. 4, the connection maintaining means 20 includes a connection support cylinder 21 that accommodates and holds the light emitting ferrule 15 and the connection ferrule 16 inside. .
Further, a flange 15 d is provided at one end of the light emitting ferrule 15, and a flange 6 d is also provided at one end of the connection ferrule 16.
And it forms so that an edge part can contact in the inside of the said connection support cylinder 21, when the direction which does not have the said flanges 15d and 16d is inserted from the both sides of the said connection support cylinder 21, respectively.

3 and 4, the light emitting core ferrule 16a and the connecting core ferrule 16a are disposed inside the light emitting ferrule 15 and inside the light emitting outer ferrule 16b and the connecting outer ferrule 16b of the connection ferrule 16. The mode which each fitted and integrated was shown.
In terms of manufacturing, a bilinear ferrule with a long optical fiber hole is easier to manufacture with a simple cylindrical shape, and with a ferrule with a flange, it is difficult to manufacture a long optical fiber hole. It is divided into a child part and an outer cylinder part in which each optical fiber hole is short. The present invention is not limited to a ferrule having such a core, and both the light emitting ferrule 15 and the connection ferrule 16 can use a ferrule in which a core portion and an outer cylinder portion are integrated. .

Further, on the rear side of the connection ferrule 16, a flange 26 on the inner peripheral side is provided so as to face the flange 16d on the outer peripheral side, and the outer peripheral surface of the flange 16d is cylindrically connected so that the inner peripheral surface of the cylinder can slide. A ferrule pressing body 22 is provided.
Further, projections 21 a and 21 b are provided at the front end portion and the rear end portion of the connection support cylinder 21 to be engaged with the engagement groove 25 on the distal end side of the connection ferrule pressing body 22.
Then, the spring 24 is attached to the flange 16d of the connection ferrule pressing body 22 and the flange 26 of the connection ferrule pressing body 22 in such a manner that the spring 24 is urged in the direction in which the distance between the two increases.
As a result, the connection ferrule 16 pushed by the spring 24 abuts against the light emitting ferrule 15, and the front end surface of the connection ferrule 16 and the rear end surface of the light emitting ferrule 15 are always in a pressed state so that the connection is established. Will be maintained.

Further, a lens fitting frame 9 fitted with end concave lenses 3 and 3a is placed on the flange 15d of the light emitting ferrule 15 on the front end side, and the lens fitting frame 9 is overlapped with the flange 15d so that the lens support holding portion 28 The lens support gripping portion 28 is fixed to the projection 21b of the connection support cylinder.
In this way, the end concave lenses 3 and 3 a are fixed to the distal end portion 15 c of the light emitting ferrule 15 by the lens fitting frame 9.

  That is, also in this embodiment, as in the above embodiment, the end concave lenses 3 and 3a are attached to the distal end portion 17a of each optical fiber hole 17 of the light emitting ferrule 15 penetrating the plurality of optical fiber holes 17 via the lens support means 8. The entire outer sides of the end concave lenses 3 and 3a are covered with a dome shape shown in FIG. 4 or a transparent or translucent lens cover 4 comprising a cylindrical portion 4a and a disc portion 4b shown in FIG. .

  As shown in FIG. 4, the end concave lens 3 has a configuration in which the end concave lens 3 is individually attached as shown in FIG. 4, and the end concave lens 3a as shown in FIG. It is possible to adopt a configuration in which each tip portion 17a of the optical fiber hole 17 is mounted so as to cover the whole.

Then, each optical fiber 19 is inserted from the rear end portion 17b of each optical fiber hole 17 of the light emitting ferrule 15 to the front end portion 17a.
The light from each LED light source 6 incident from the rear end portion 5b of each optical fiber 5 is enlarged by the end concave lenses 3 and 3a so as to be emitted from the lens cover 4.

  The end portions 5 b of the plurality of optical fibers 5 are provided facing the plurality of LED light emission sources 6, and the tip portions 5 a of the plurality of optical fibers 5 exposed from the tip portions of the double-wire optical fiber cable 11 are connected to the connection ferrule 16. Each optical fiber hole 18 is inserted from the rear end portion 18b side to the front end portion 18a. And it connects to the rear-end part 17b of each optical fiber hole 17 of the said light emission ferrule 15. FIG.

A transparent gel material 27 is filled between the end portions of the light emitting ferrule 15 and the connection ferrule 16. The transparent gel material 27 is preferably one having a refractive index equal to the material of the optical fiber 5 in order to prevent light from leaking from the gaps at the connecting portions.
Further, instead of the transparent gel material 27, a convex lens can be mounted between the end portions. This lens is also used to prevent light leakage from the gap between the connecting portions, and is mounted so that the center line of the optical fiber holes 17 and 18 and the focal point of the lens coincide. It is possible to mount a convex lens between the end portions of the optical fiber holes 17 and 18 by a method of fitting directly into the optical fiber hole or a method of mounting via a lens support.

  The LED lamp for double-wire optical fiber cable of the present invention is used in a place where electric leakage is easy such as transportation equipment such as automobiles, airplanes and ships, buildings such as buildings and condominiums, work equipment such as underwater, etc. It can be widely used for lighting.

DESCRIPTION OF SYMBOLS 1 Optical fiber hole 1a Front end part of optical fiber hole 1b Rear end part of optical fiber hole 2 Light emitting ferrule 2a Front end part of light emitting ferrule 2b Rear end part of light emitting ferrule 2c Flange part of light emitting ferrule 3 End concave lens 3a End concave lens 4 Lens cover 5 Optical fiber 5a Optical fiber tip 5b Optical fiber end 6 LED light source 7 Outer concave lens 8 Lens support means 9 Lens fitting frame 9a Lens fitting hole 10 LED substrate 11 Double track optical fiber cable 12 Rear socket 12a Rear socket Cable insertion hole 12b Flange portion of rear socket 12c Male screw portion of rear socket 13 Front socket 13a Fitting portion of front socket 13b Female screw portion of front socket 14 Lens support gripping portion 15 Light emitting ferrule 15a Light emission Core ferrule 15b Light emitting outer ferrule 15c Light emitting ferrule tip 15d Light emitting ferrule rear end 16 Connection ferrule 16a Connection core ferrule tip 16b Connection outer ferrule tip 16c Connection ferrule tip 16d Connection ferrule tip 17 Optical fiber 17a Fiber optic hole tip 17b Fiber optic hole rear end 18 Fiber optic hole 18a Fiber optic hole tip 18b Fiber optic hole rear end 19 Optical fiber 19a Fiber optic tip 19b Fiber optic tip 20 Connection Maintenance means 21 Connection support cylinder 21a Projection of connection support cylinder 21b Projection of connection support cylinder 22 Connection ferrule pressing body 23 Pressing body support 23a Screw portion 23b of pressing body support 24 Flange 24 of pressing body support Pulling 25 locking groove 26 flange 27 clear gel material 28 lens support grip portion

Claims (4)

  A light emitting ferrule having a plurality of optical fiber holes penetrating, and an end concave lens mounted so as to cover each or all of the tip ends of the optical fiber holes via lens support means provided at the tip of the light emitting ferrule; And a multi-wire optical fiber cable having a plurality of optical fibers each having a distal end portion provided facing a plurality of LED emission sources and having a distal end portion inserted from the rear end portion side to the distal end portion of each optical fiber hole. LED lamp for double-wire optical fiber cable.   A light emitting ferrule having a plurality of optical fiber holes penetrating, a connection ferrule having each optical fiber hole penetrating at a position coincident with the rear end portion of each optical fiber hole of the light emitting ferrule, and provided at the tip of the light emitting ferrule An end concave lens mounted so as to cover each or all of the front end portions of the optical fiber holes via lens support means, the light emitting ferrule and the connection ferrule, and the rear end portions of both optical fiber holes; Connection maintaining means for matching the positions of the optical fiber holes with the tip portions thereof, optical fibers inserted from the rear end portions of the optical fiber holes of the light emitting ferrules to the tip portions, and a plurality of LEDs at the end portions. The rear end of each optical fiber hole of the connection ferrule is provided with a front end portion of a plurality of optical fibers exposed from the front end portion and facing the issue source. A multi-fiber optical fiber cable having a plurality of optical fibers inserted from the tip to the tip, a transparent gel material filled between the ends of the light emitting ferrule and the connection ferrule, or a convex lens disposed between the ends. An LED lamp for a double-wire optical fiber cable.   The lens support means has a support frame fixed to the light emitting ferrule, and a lens fitting formed to coincide with the position of the tip of each optical fiber hole in the support frame and to have the same size as the diameter of each optical fiber hole The LED lamp for a multi-wire optical fiber cable according to claim 1 or 2, comprising a lens fitting hole formed to have a size covering the whole end of the hole or the light emitting ferrule.   4. The LED lamp for a multi-wire optical fiber cable according to claim 1, wherein an outer concave lens having a size covering the entire end portion of the light emitting ferrule is disposed outside the end concave lens.

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