JP3072365B2 - Detachable structure and drip-proof structure of fluorescent tube of surface emitting lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member forming a light emitting surface for closing a concave portion by providing an ultra-small cold-cathode fluorescent tube on one side of the concave portion as a reflecting surface. And a surface-emitting illuminator formed by inserting a luminous element.

[0002]

2. Description of the Related Art Conventional surface light emitters are often used as one component of OA equipment and home appliances, such as a backlight of a liquid crystal display, and are now being used as lighting equipment.

[0003]

In this case, when the fluorescent tube has run out or the lighting life has expired, the entire unit is replaced. Furthermore, there was a limit on the use in humid places due to the concept of electric appliances. Also, when used outdoors, the structure is complicated, such as being housed in a waterproof outer box.

The present invention has been made in view of the above points, and in a surface-emitting illuminator using such a surface illuminator, a detachable structure and a water droplet in which a fluorescent tube is extremely easy to be attached and detached are provided. An object of the present invention is to provide a drip-proof structure that does not enter and solve the above-mentioned problem.

[0005]

According to the first aspect of the present invention, a flat box-shaped main body is provided with a reflection surface on the bottom surface of the concave portion of the opening, and a microminiature cold cathode fluorescent tube is provided on one side of the concave portion. In a surface-emitting illuminator in which a member constituting a light-emitting surface to be closed is inserted, one end of the microminiature cold-cathode fluorescent tube is supported between the elastic legs of a sandwich-type electrode composed of a plurality of elastic legs provided on the back surface of the plug. And inserted into the opening recess through a small through-hole formed in the side surface of the box-shaped main body, and the other end is supported by a receiving-type support electrode fixed in the interior of the opening recess. A plug supporting one end closes the small through hole on the side surface of the box-shaped main body, and the plug can be fixed to the small through hole. In this state, the sandwiching type electrode comes into contact with the electrode plate provided in the opening concave portion. The structure was such that the fluorescent tube of the surface-emitting illuminator was detachable.

According to a second aspect of the present invention, the bottom surface of the flat box-shaped main body is formed as a reflection surface, and a micro cold cathode fluorescent tube is provided on one side of the recess to form a light emitting surface for closing the recess. In a surface-emitting illuminating body formed by inserting a member to be inserted, a frame-shaped packing material along the outer peripheral edge of the opening concave portion, an adhesive or a molten adhesive layer is interposed, and a transparent cover plate that covers the opening concave portion from above is provided. The transparent cover plate is fixed on the outer periphery of the box-shaped main body, and one end of the ultra-small cold-cathode fluorescent tube is supported between the elastic legs of the sandwich-type electrode composed of a plurality of elastic legs provided on the back surface of the sealed plug. Through a small through-hole formed in the side surface of the box-shaped main body, and inserted into the opening recess, and the other end is supported by a receiving-type support electrode fixed in the back of the opening recess. The closed type stopper that supports the The plug can be fixed in a small hole, the clamping-type electrode in this state, in contact with the electrode plate provided in the opening in the recess, and a drip-proof structure of a surface emitting lighting element.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show a first embodiment of the present invention.
In the flat box-shaped main body 1 having an opening recess 1a on one side, the bottom surface of the opening recess 1a is a reflection surface, and the upper and lower sides of the recess 1a face the opening recess 1a. Groove-shaped concave portions 2 are provided, and a reflection sheet 3 having a substantially U-shaped cross section is inserted into these groove-shaped concave portions 2. Ultra-small cold-cathode fluorescent tubes 4, 4 are provided in each of these reflective sheets 3, A member 5 forming a light emitting surface for closing the opening concave portion 1a is inserted. A control device housing recess 1b into which the inverter device 6 of the lighting body is inserted is provided along one side of the opening recess 1a, and a cable bush 7 is inserted into a hole formed in one side surface of the box-shaped main body 1 on the side. The lead wire 8 is introduced into the control device housing recess 1b.

Further, a frame-shaped packing material 9 is placed on the box-shaped main body 1 along the outer periphery of the opening of the opening recess 1a and the control device housing recess 1b, and the opening is closed. A transparent cover plate 10 for closing the portion is placed, and the transparent cover plate 10 is fixed with screws around the outer periphery of the box-shaped main body 1. On the back surface of the transparent cover plate 10, a convex portion 10a is provided through the opening of the open concave portion 1a to press the upper surface of the member 5 constituting the light emitting surface in the open concave portion 1a. The inner peripheral edge of the packing material 9 comes into pressure contact. Further, grooves 12 are provided on one side surface of the box-shaped main body 1 having the control device housing recess 1b in the axial direction of the ultra-small cold cathode fluorescent tubes 4 above and below the box-shaped main body 1, respectively. A small through-hole 13 having a protruding portion 13a is formed on both sides of the circular shape reaching from the groove-shaped concave portion 2 to the groove-shaped concave portion 2. The positions of these grooves 12 are out of the above-mentioned control device housing recess 1b.

At the other end of the groove-shaped recess 2 opposed to the small through hole 13 of each groove 12, a support electrode 14 composed of a coil spring for supporting one end of each of the micro cold cathode fluorescent tubes 4 is fixed. I have. As shown in FIGS. 4 and 5, each of these support electrodes 14 has a U-shaped electrode plate 14a made of a conductor.
Insert the coil spring 14b into the groove of the electrode plate 14a.
One end of the coil spring 14b is supported by a bent plate 14c formed by bending a cut portion provided on one side of the coil spring 14b. Further, one end of one lead wire 6a of the control device housing recess 1b led out from the inverter device 6 is connected to a terminal plate 14d obtained by bending an end of the electrode plate 14a by welding. Each of the support electrodes 14 has a hole 14e formed in the terminal plate 14d fitted into a pin 2a projecting from a corner of the groove-shaped recess 2, and fitted into the corner. Thereby, the supporting electrode 1
4 is fixed. One end of each of the ultra-small cold cathode fluorescent tubes 4 pushes the coil spring 14b, and the coil spring 14b
Is contracted, guided into the two side plates of the electrode plate 14a, supported at the corresponding location, and electrically connected to the support electrode 14.

The small through holes 13 of each of the grooves 12 are closed by caps 15, respectively. Each of these caps 15 has a flange 15b at one end of a short cylinder 15a as shown in FIGS.
The protrusions 15c, 15c are provided on both sides of the other end.
5c, insert the cap 15 into each small through hole 13,
A groove 15d provided on the outer surface of the flange 15b of the cap 15
When a coin or tool is put into the container and turned 90 degrees, the two projections 15c of the cap 15 are locked on the inner peripheral surface of the small through hole 13 as shown in FIG. The flange 15b is clamped, and the cap 15 is fixed. The flange 15b of the cap 15 closes the protrusions 13a on both sides of each small through hole 13.

On the back surface of each of these caps 15,
A pinching electrode 16 composed of a plurality of elastic legs 16a is a screw 17
It is fixed by. The other end of each microminiature cold cathode fluorescent tube 4 is sandwiched between these elastic legs 16a to support each microminiature cold cathode fluorescent tube 4. An electrode plate 18 is erected in each groove-shaped recess 2 at a certain distance from each of the small through holes 13 so as to face the small through hole 13. The electrode plate 18 has a through hole 18a through which each of the microminiature cold cathode fluorescent tubes 4 can be inserted, and one end of the other lead wire 6b of the control device housing recess 1b led out from the inverter device 6 is connected thereto. I have.

Accordingly, an operator holds each cap 15 supporting the other end of each microminiature cold cathode fluorescent tube 4 on each sandwiching type electrode 16, and holds one end of each microminiature cold cathode fluorescent tube 4 on the box-shaped main body 1. Each of the small through holes 13 on the side face is inserted into each of the reflection sheets 3 in the groove-shaped concave portion 2, and further, is locked on the coil spring 14 b of the support electrode 14, and is pushed, so that one end of each cap 15 is fixed to each Insert the through hole 13 and turn it approximately 90 degrees,
5 is fixed to each small through hole 13. Further, in this state, the tip of the elastic leg 16a of each sandwiching type electrode 16 of each cap 15 comes into contact with each electrode plate 18, and one end of the microminiature cold cathode fluorescent tube 4 and the electrode plate 18 are electrically connected. It has a configuration.

The surface-emitting illuminating body of the present invention has the above-described structure.
As shown in FIG. 1, fixed ends 22 and 21 of fixed length are fixed to the ceiling plate 20 at both ends, and each end of the main body mounting plate 23 having one end fixed to each hinge 21 is attached to the ceiling plate 20. And the bottom surface of the box-shaped main body 1 is fixed to the lower surface of the main body mounting plate 23. Further, two hinges 25 are fixed to one side of the caulking plate 22 inside the hinges 21, and these hinges 25 are fixed.
A cover 2 having an opening 26a in the center of a flat lid
6, one side is fixed, and the side edge 26b provided on the other side is
0 and fixed with screws 27.

Therefore, when replacing the ultra-small cold cathode fluorescent tube 4, the screws 27 are first removed, and the cover 26 is turned around the hinges 25 as shown in FIGS. When each screw 24 is removed and each screw 24 is removed, each tip of each body mounting plate 23 descends centering on each hinge 21, and the box-shaped main body 1 integrated therewith also hangs down from the ceiling plate 23. As shown in FIG.
And the hinges 25 are displaced from each other, so that the box-shaped main body 1 hangs beside the cover 26, and fits into each small through-hole 13 of each groove 12 on the side surface of the box-shaped main body 1 as shown in FIG. The closed cap 15 is exposed. Therefore, the ultra-small cold-cathode fluorescent tube 4 can be replaced in this state, which is extremely convenient.

FIGS. 13 and 14 show a case where two surface-emitting illuminators of the present invention are used side by side. FIG. 13 shows a cover which fits on the lower surface of a quadrangular frame 28 fixed to a ceiling plate 20. A plate 29 is provided. One side of the cover plate 29 is rotatably supported by a plurality of hinges 30, and the other side is fixed to the frame 28 by a plurality of screws 31. The side surfaces of the box-shaped main body 1 of the two surface-emitting illuminating bodies are abutted with each other, and the small through hole 1 in which the cap 15 is fitted.
3 are positioned and fixed on the outer surface of each box-shaped main body 1.
Therefore, the two surface-emitting illuminators are always contained in the frame 28 and the cover plate 29. And these screws 3
When the cover 1 is removed, the cover plate 29 is tilted about the hinge 30, so that the outer surfaces of the two box-shaped main bodies 1, 1 are exposed. Therefore, in this state, the ultra-small cold-cathode fluorescent tubes 4 of both the surface-emitting illuminators can be replaced.

FIG. 14 shows two cover plates 3 fitted on the lower surface of a quadrangular frame 32 fixed to the ceiling plate 20.
The cover plates 33, 33 are rotatably supported at their butting ends by a plurality of hinges 34, respectively, and the other side of each cover plate 33 is fixed to the frame 32 by a plurality of screws 35. The box-shaped main body 1 of the surface-emitting illuminating body is fixed to the upper surface of each of the cover plates 33, and the outer side surface of each box-shaped main body 1 having the small through hole 13 in which the cap 15 is fitted. Is fixed to the free end of each cover plate 33. Therefore, each surface light-emitting illuminator is always contained in the frame 32 and each cover plate 33. When these screws 35 are removed, the cover plates 33 around the hinges 34 are removed.
Are tilted so that the outer side surfaces of the two box-shaped main bodies 1 and 1 are exposed. Therefore, if one of the cover plates 33 is tilted, the ultra-small cold cathode fluorescent tubes 4 of each surface emitting illuminator can be replaced.

FIGS. 15 to 20 show a second embodiment of the present invention. In the second embodiment, a stopper 36 made of plastics or the like is used instead of the cap 15,
Further, the small through-hole 13 formed in the side surface of the box-shaped main body 1 is replaced with a circular small through-hole 37, and other configurations are almost the same. As shown in FIGS. 18 to 20, the stopper 36 has a large-diameter head 36b at the upper end of a column 36a, and projections 36c project from both sides of the head 36b, and the upper surfaces of these projections 36c are slightly inclined to one side. doing. The cylinder 36a under this head 36b
An O-ring 36d is crowned on the outer periphery of. A groove 36e is formed in the upper surface of the head 36b. Although not shown in the figure, a clamping electrode 16 for supporting one end of the microminiature cold cathode fluorescent tube 4 is fixed to the back surface of the plug 36.

The groove 12 provided on the side surface of the box-shaped main body 1 is cut off on the upper and lower sides, and one of the cut-off portions 12a has a locking wall 12b. At the substantially center of the groove 12, a circular small through hole 3 having substantially the same diameter as the cylindrical portion 36a of the stopper 36 is provided.
7 is provided. Accordingly, the protrusion 36c on both sides of the stopper 36 is aligned with the longitudinal direction of the groove 12, and the stopper 36 is
And the cylindrical portion 36a of the plug 36 is inserted into the small through hole 37, and the plug 37 is turned in this state.
The two protrusions 12c enter the upper and lower undercuts 12a, and one of the protrusions 36c hits the locking wall 12b so that it does not rotate any more. Then, the O-ring 36d of the stopper 36 is compressed by being sandwiched between the outer peripheral edge of the small through hole 37 and the projection 36c, and the portion is sealed.

FIGS. 21 to 23 show a reference example of the present invention, in which a support electrode 14 having a cap 38b at the tip of a coil spring 38a is used in place of the support electrode 14 for supporting one end of the microminiature cold cathode fluorescent tube 4. 38, and the other end of the microminiature cold cathode fluorescent tube 4 is replaced with a screw hole 39 provided on the side surface of the box-shaped main body 1 as shown in FIG. The screw-type cap 40 is screwed into the groove 40a on the back surface and supported. A cup-shaped electrode plate 41 is inserted into the concave groove 40a of the screw type cap 40, and an outer peripheral flange 41a of the electrode plate 41 covers the outer peripheral edge of the concave groove 40a. The tip of the spring plate terminal 42, one end of which is fixed to the inner periphery of the box-shaped main body 1, comes into pressure contact with the outer peripheral flange 41 a of the electrode plate 41. Further, a flange 40b is provided at the outer end of the screw type cap 40, and an O-ring 40 is provided beside the flange 40b.
When the screw type cap 40 is screwed into the screw hole 39, the O-ring 40c is compressed by the flange 40b and the outer peripheral edge of the screw hole 39, and the screw hole 39 is sealed. It has become.

The ultra-small cold-cathode fluorescent tube 4 has a substantially U-shaped cross section.
23 is covered with a protection case 43 with a letter-shaped reflection sheet.
As shown in the figure, the ultra-small cold cathode fluorescent tube 4 is sandwiched between the curved portions of the locking spring members 44 which are engaged with both ends of the protective case 43 with the reflecting sheet, and the outer periphery of the ultra-small cold cathode fluorescent tube 4 is provided with a reflecting sheet. The protective case 43 is supported. The back of the protective case 43 with a reflective sheet is provided with a ridge 4 in the longitudinal direction.
3a, and the groove-shaped recess 2 of the first embodiment.
When these are inserted into the protective case 43,
Does not rotate. The ultra-small cold-cathode fluorescent tube 4 covered with the protective case 43 with the reflection sheet in this manner
Is inserted from the screw hole 39 into the groove-shaped concave portion 2, and one end of the ultra-small cold cathode fluorescent tube 4 is connected to the cap 38 b of the support electrode 38.
Then, the screw type cap 40 is screwed into the screw hole 39. As a result, the other end of the ultra-small cold cathode fluorescent tube 4 enters the concave groove 40a of the screw type cap 40, and contracts the coil spring 38a of the support electrode 38. Thus, one end of the ultra-small cold cathode fluorescent tube 4 is supported by the support electrode 38 and the other end is supported by the electrode plate 41, and are electrically connected to each other. The electrode plate 41 and the spring plate terminal 42 are also electrically connected.

In the above embodiment, the cap 15
However, the present invention is not limited to this, and any plug that can be widely fixed to a small through-hole or a closed plug that can be fixed to the small through-hole may be used. Further, the support electrode 14
However, the present invention is not limited to the above-described structure, but may be any suitable type such as a cap type or a coil type as long as it is a receiving type supporting electrode that receives and supports one end of the ultra-small cold cathode fluorescent tube 4. Further, in the above-described embodiment, when the transparent cover plates 10 are fixed to the box-shaped main body 1, the packing material 9 is interposed therebetween to improve the sealing property. However, the present invention is not limited to this, and the adhesive And the box-shaped body 1 and the transparent cover plate 10 and the connecting members interposed therebetween are all made of the same material, and the connecting members are melted to integrally connect the box-shaped body 1 and the transparent cover plate 10. It is also possible to do.

[0022]

According to the first aspect of the present invention, an ultra-small cold-cathode fluorescent tube in a surface-emitting illuminator is provided, one end of which is supported by a support electrode, and the other end of which is provided on the back of a plug fixed to a small through hole. Since the microminiature cold cathode fluorescent tube is cut off, does not turn on, or is replaced with a half-life when the plug is removed from the small through hole on one side of the box-shaped main body, since it is supported by the sandwiching type electrode, An ultra-small cold-cathode fluorescent tube comes out of the box-shaped body supported by the plug. When the ultra-small cold cathode fluorescent tube is placed in a predetermined position inside the box-shaped main body, the ultra-small cold-cathode fluorescent tube is supported by a stopper, and the stopper is inserted into the box-shaped main body. When fitted, the tip is supported by the support electrode. Therefore, it is extremely easy to attach and detach the microminiature cold cathode fluorescent tube.

According to a second aspect of the present invention, in addition to the effects of the first aspect of the present invention, a transparent cover is provided by interposing a packing material, an adhesive or a molten adhesive layer in the opening of the opening concave portion of the box-shaped main body. Since it is covered with a plate and the small through-hole on the side surface of the box-shaped main body is also closed with a hermetic stopper, water drops and the like do not enter into the inside, so that the internal equipment can be protected.

[Brief description of the drawings]

FIG. 1 is a schematic exploded configuration diagram of a first embodiment of the present invention.

FIG. 2 is a front view of an upper half portion of the first embodiment of the present invention with a transparent cover plate and a packing material removed.

FIG. 3 is a side view of an upper half portion of the first embodiment of the present invention.

FIG. 4 is an enlarged perspective view showing a structure of a support electrode and a corner of a groove-shaped recess of a box-shaped main body into which the support electrode is fitted according to the first embodiment of the present invention.

FIG. 5 is an enlarged front view of the first embodiment of the present invention, showing a state in which a supporting electrode is fitted into a corner of a groove-shaped concave portion of the box-shaped main body.

FIG. 6 shows a cap according to the first embodiment of the present invention.
FIG. 3 is an enlarged front view showing one end of a sandwiching type electrode and a microminiature cold cathode fluorescent tube.

FIG. 7 is an enlarged front view showing a state in which a cap supporting one end of a microminiature cold-cathode fluorescent tube with a clamping electrode is fitted into a small through hole of a box-shaped main body according to the first embodiment of the present invention; It is.

FIG. 8 is a front view of the first embodiment of the present invention, showing a state in which the surface-emitting illuminating body is mounted on a ceiling.

FIG. 9 is a bottom view of the first embodiment of the present invention, showing a state in which the surface-emitting illuminating body is mounted on a ceiling.

FIG. 10 is a front view of the first embodiment of the present invention, showing a state in which one end of a surface-emitting illuminator mounted on a ceiling and a cover is detached from the ceiling, and is hung by a hinge at the other end.

FIG. 11 is an enlarged front view showing the hinge portion of the first embodiment of the present invention in a state where one end of the surface-emitting illuminating body and the cover attached to the ceiling is removed from the ceiling and hung at the other end. It is.

FIG. 12 is a bottom view of the first embodiment of the present invention, showing a state in which one end of a surface-emitting illuminator mounted on a ceiling and a cover is detached from the ceiling, and is hung down with a hinge at the other end.

FIG. 13 shows a first embodiment of the present invention in which two surface-emitting illuminators are attached to a ceiling and attached.
It is a perspective view which shows the state which removed one end of the cover board which supports these two surface-emitting lighting bodies from the ceiling.

FIG. 14 is a view showing another embodiment of the first embodiment of the present invention in which two surface light-emitting illuminators are attached to a ceiling so as to be attached to the ceiling; It is a perspective view which shows the state which removed one end of the board from the ceiling.

FIG. 15 is a partial side view of a box-shaped main body according to the second embodiment of the present invention.

FIG. 16 is a sectional view taken along line AA of FIG. 15 in a second embodiment of the present invention.

FIG. 17 is a partial cross-sectional view showing a state where a plug is fitted into a small through hole of a box-shaped main body according to the second embodiment of the present invention.

FIG. 18 is a plan view of a stopper according to the second embodiment of the present invention.

FIG. 19 is a side view of a stopper according to the second embodiment of the present invention.

FIG. 20 is a front view of a stopper according to the second embodiment of the present invention.

FIG. 21 is a schematic exploded configuration diagram in a reference example of the present invention.

FIG. 22 is a cross-sectional view of main parts showing a state in which a screw cap is screwed into a screw hole instead of a small through hole of the box-shaped main body in the reference example of the present invention.

FIG. 23 is a cross-sectional view showing a state in which a protective case with a reflection sheet is covered on the outer periphery of a microminiature cold cathode fluorescent tube in a reference example of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Box-shaped main body 1a Opening recessed part 1b Control device storing recessed part 2 Groove-shaped recessed part 3 Reflective sheet 4 Ultra-small cold cathode fluorescent tube 5 Member constituting light emitting surface 9 Packing material 10 Transparent cover plate 12 Groove 13 Small through hole 14 Support electrode 15 Cap 16 Nipped electrode 18 Electrode plate

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hideaki Nakamura 1-1-14 Shinjuku, Shinjuku-ku, Tokyo Nasu Electric Iron Works Co., Ltd. (56) References JP-A-11-66943 (JP, A) JP-A-Hei 6-51293 (JP, A) JP-A-8-234199 (JP, A) JP-A-5-7538 (JP, U) JP-A-7-41849 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F21V 8/00 601 F21S 2/00 F21V 19/00 320 G02F 1/133

Claims (2)

(57) [Claims] 1. A flat box-shaped main body having an opening concave bottom surface as a reflection surface, and a micro cold cathode fluorescent tube provided on one side of the concave portion.
In a surface-emitting illuminating body comprising a member constituting a light-emitting surface for closing the concave portion, one end of the microminiature cold-cathode fluorescent tube is connected to an elastic leg of a sandwich-type electrode comprising a plurality of elastic legs provided on the back surface of a plug. It is inserted between the small through-holes drilled on the side surface of the box-shaped main body and inserted into the above-mentioned opening recess, and the other end is supported by a receiving-type support electrode fixed in the inside of the opening recess. A plug supporting one end of the fluorescent tube can be fixed to a small through hole on the side surface of the box-shaped main body, and in this state, the sandwiching type electrode is configured to contact an electrode plate provided in the opening recess. ,
Detachable structure of fluorescent tube for surface-emitting illuminator. 2. An ultra-small cold-cathode fluorescent tube is provided on one side of this concave portion as a reflecting surface, and the bottom surface of the open concave portion of the flat box-shaped main body is provided as a reflecting surface.
In a surface emitting illuminator in which a member constituting a light emitting surface for closing the concave portion is inserted, a packing material, an adhesive or a fusion bonding layer is interposed along the outer peripheral edge of the open concave portion, and the open concave portion is closed from above. A transparent cover plate is mounted, the transparent cover plate is fixed around the outer periphery of the box-shaped main body, and one end of the ultra-small cold cathode fluorescent tube is connected to the elastic leg of a sandwich-type electrode comprising a plurality of elastic legs provided on the back surface of a sealed plug. It is inserted between the small through-holes drilled on the side surface of the box-shaped main body and inserted into the above-mentioned opening recess, and the other end is supported by a receiving-type support electrode fixed in the inside of the opening recess. A sealed stopper supporting one end of the fluorescent tube closes the small through hole on the side surface of the box-shaped main body, and the sealed stopper can be fixed to the small through hole. In this state, the sandwiching electrode is provided in the opening recess. Drip-proof surface-emitting illuminator, characterized in that it comes into contact with the electrode plate Elephants.