JPH1064480A - Bulb form fluorescent lamp and lighting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bulb form fluorescent lamp which has a good jointing workability of a holder and a fluorescent luminous tube, is strong to an impact, and has good appearance. SOLUTION: To a holder 2 for holding a fluorescent luminous tube 1, an opening 2b whose center is at the position displaced to the center side of the fluorescent luminous tube from an imaginary center line 10 near the bending part, when the fluorescent luminous tube 1 is observed in the direction parallel to the surface, including the bending part 1b, that is, displaced to the inner side, is formed, and a silicone adhesive 5 is filled between the bending part and the holder from the opening 26, so as to fix both members. At least a part of the silicone adhesive 5 is attached to the opening 2b. By thus displacing the position of the opening 2b, the silicone adhesive 5 hardly protrudes to the outer side, so as to present a good appearance. And since at least a part of the silicone adhesive 5 is attached to the opening 2b, the adhesive strength is high, and this lighting equipment is strong with respect to impacts. Furthermore, the fixing work of both ends of the fluorescent luminous tube 1 and the bending part can be carried out by the work from the rear surface side of the holder 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulb-type fluorescent lamp and a lighting fixture equipped with the same.

[0002]

2. Description of the Related Art FIG. 12 is a sectional view showing a first prior art. In this bulb-shaped fluorescent lamp, both ends 101a of a double U-shaped fluorescent arc tube 101 are
2a, the adhesive 1 on the case 103 side of the holder 102
Bent part 1 fixed at 04 and close to holder 102
01b is an adhesive 105 on the arc tube side of the holder 102.
It is a structure that is fixed with. In addition, 106 is a lighting circuit, 1
07 is a glove and 108 is an envelope. Envelope 108
Is composed of a glove 107 and a case 103.

[0003] However, the first prior art is a fluorescent luminous tube 10.
1 and the bent portion 1
Since the adhesive is injected from a different surface of the holder 102 when the holder 01b is fixed to the holder 102, the holder 1
02 needs to be inverted. Naturally, since one of the adhesives has to be turned over after being hardened, there is a problem that much labor and time are required and workability is extremely poor.

[0004] In order to solve the above-mentioned problems of the prior art, the invention shown in FIG. 13 has been proposed in Japanese Patent Application Laid-Open No. Hei 7-14546.

FIG. 13 is a sectional view showing a second conventional technique.

The same parts as those in FIG. 12 are denoted by the same reference numerals and description thereof will be omitted.

The bulb-shaped fluorescent lamp according to the second prior art includes a fluorescent lamp 101 having both ends 101a and a bent portion 101a.
b, a convex portion 102b opening toward the side surface of the bent portion 101b is formed in the holder 102, and an injection port 102c communicating with the convex portion 102b is formed in the holder 102. The configuration is such that a silicone adhesive is injected into the protrusion 102b via the protrusion 102c. The silicone adhesive 105 ′ exposed from the opening by the injection of the silicone adhesive mainly contacts the side surface of the bent portion 101 b and bonds the bent portion 101 b to the holder 102.

[0008]

However, the second prior art still has a problem to be solved.

That is, the second prior art is a fluorescent light emitting tube 1
01 with the side of the silicone adhesive 10
Since the lamp is fixed at 5 ', the bent portion 101b of the fluorescent arc tube collides with the holder 102 when the lamp is dropped during handling of the bulb-type fluorescent lamp or when a strong impact is applied to the lamp during transportation. As a result, cracks may occur in the fluorescent light emitting tube 101.

Further, a convex portion 102b is formed on the holder 102, and the bent portion 101b is bonded by exposing the adhesive 105 'from an opening formed on the side surface of the convex portion 102b.
The projection 102b must be somewhat large. For this reason, in the bulb-type fluorescent lamp using the transparent globe 106, when the lamp is viewed from the side, the protruding portion 102b is visible and unsightly.

Further, because of the presence of the convex portion 102b,
Part of the light emitted from the fluorescent light emitting tube 101 is
b, there is also a problem that the effective light amount of the bulb-type fluorescent lamp is somewhat reduced. Even if the difference in the effective light amount of this type of fluorescent lamp is slight, it can be a large difference commercially.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a compact fluorescent lamp which has good workability in bonding a holder and a bent portion, is resistant to impact, and has a good appearance.

[0013]

According to a first aspect of the present invention, there is provided a bulb-type fluorescent lamp comprising: a fluorescent light emitting tube having a bent portion; and a light emitting tube which holds both ends of the fluorescent light emitting tube and is parallel to a surface including the bent portion. A holder having an opening whose center is located at a position deviated from the virtual center line near the bent portion toward the center of the fluorescent tube when viewed; a bent portion is fixed to the holder between the bent portion and the holder; A silicone adhesive at least partially attached to the opening; a lighting circuit of the fluorescent luminous tube provided behind the holder; a case accommodating the lighting circuit; and a case disposed on the case side. And a base.

In the present invention, it is sufficient that the fluorescent light emitting tube has a bent portion, and therefore, it is allowed to be a fluorescent light emitting tube having various shapes such as a double U and a triple U. The virtual center line of the bent portion means a virtual line passing through the center of the fluorescent light emitting tube near the bent portion of the tube. Also,
The fluorescent arc tube has a pair of filament electrodes sealed at both ends of an elongated glass bulb, a phosphor layer is directly or indirectly applied to the inner surface, and a discharge medium such as a rare gas and mercury is sealed inside. I have. As the phosphor, a three-wavelength emission type rare earth phosphor, a calcium halophosphate phosphor, or the like can be used.

The holder does not need to have a disk shape as long as it supports the fluorescent tube and the bent portion, but it is preferable that the holder has a disk shape. The opening of the holder may have any shape as long as its center is deviated toward the center of the entire arc tube with respect to a virtual center line near the bent portion of the arc tube. In short, it is only necessary that a required amount of silicone adhesive can be injected into the bent portion from the back side of the holder through this opening. Further, at least a part of the silicone adhesive is adhered to the opening. The significance of the deviation will be described later.

The lighting circuit is preferably an inverter type, but is not limited to this in view of the nature of the present invention.

Although the screw type is usually used as the base, the present invention is not limited to this. Further, it is not necessary to directly attach to the case, and it may be indirectly attached to the case.

Although gloves may be present, they are not required. That is, the present invention is also applicable to a bulb-type fluorescent lamp without a globe.

In the bulb-type fluorescent lamp of the present invention, when viewed from a direction parallel to the plane including the bent portion of the fluorescent luminous tube, ie, from the side, the center of the opening of the holder is located at the center of the fluorescent luminous tube, that is, at the back side. Since it is displaced so as to be positioned, when the silicone adhesive is injected from the back side of the holder, the amount protruding toward the front side of the arc tube is relatively small, so that the appearance is not easily disturbed.

It is very important that no convex portion is required as in the second prior art. Therefore, the appearance is not hindered by the convex portions, and the effective light amount is not reduced.

Further, since a silicone adhesive is interposed between the holder and the fluorescent tube, it is resistant to impact.

Furthermore, since the injection of the silicone adhesive is performed from the back side of the holder, both ends and the bent portion of the fluorescent tube can be fixed to the holder without inverting the holder, so that workability is good.

Further, even if the bending or bending of the silicone adhesive is caused by the expansion or contraction of the silicone adhesive by turning on and off the fluorescent tube, it is extremely easy to apply the silicone adhesive so as to escape from the opening. Therefore, there is no fear that cracks may occur in the bent portion due to stress.

According to a second aspect of the present invention, there is provided a bulb-type fluorescent lamp comprising: a fluorescent luminous tube having a bent portion; and a bent portion when both ends of the fluorescent luminous tube are held and viewed from a direction parallel to a plane including the bent portion. A holder having an opening formed at a position displaced from the virtual center line of the portion toward the center of the fluorescent tube;
A silicone adhesive fixing the bent portion to the holder between the bent portion and the holder and having at least a part adhered to the opening; a lighting circuit of the fluorescent light emitting tube disposed behind the holder; And a translucent glove that forms an envelope with the case.

The present invention has a glove, and the case and the glove constitute an envelope. The envelope protects the fluorescent tube mechanically and contributes to the appearance similar to an incandescent lamp. The glove may be provided with light diffusion as is known, or may be transparent. Although the shape of the glove is arbitrary, it is possible to adopt a so-called G shape similar to a generally popular spherical shape, a so-called T shape having a spherical tip and a cylindrical shape, and the like.

The attachment of the glove is not particularly limited, but an annular gap can be formed between the case and the holder, and the glove can be fixed in the gap by a silicone adhesive.

According to a third aspect of the present invention, there is provided the bulb-type fluorescent lamp according to the first or second aspect, wherein the opening of the holder when viewed from a direction parallel to a plane including the bent portion of the fluorescent arc tube. The width D is characterized by satisfying 0.3d ≦ D ≦ 1.2d, where d is the outer diameter of the fluorescent tube.

According to the present invention, the width of the opening when the bent portion of the fluorescent tube is viewed from a so-called lateral direction is defined.
The shape of the opening when viewed from above is preferably rectangular, but is not limited to a rectangle due to the nature of the invention.
Any desired shape such as a circle, an ellipse, and a rhombus is allowed. However, since a necessary amount of silicone adhesive can be easily and reliably interposed between the bent portion and the holder, and the appearance is not hindered, there is a generally established width dimension. The invention stipulates this. In addition, 0.5d ≦ D ≦ 0.8d is particularly preferable in the above range. If the opening has a shape other than a rectangle, the diameter is converted to a circle having the same area.

According to a fourth aspect of the present invention, there is provided the bulb-type fluorescent lamp according to any one of the first to third aspects, as viewed from a direction parallel to a plane including the bent portion of the fluorescent arc tube. The width W of the opening of the holder satisfies 1d ≦ W ≦ 3d, where d is the outer diameter of the fluorescent tube.

The present invention defines the width of the bent portion of the fluorescent tube when viewed from the so-called front surface, and is based on the same reason as in the preceding section.

According to a fifth aspect of the present invention, there is provided the bulb-type fluorescent lamp according to the first or second aspect, wherein the opening of the holder has a diameter R when the outer diameter of the fluorescent tube is d. ... 3d ≦ R ≦ 1.2d.

The present invention defines the diameter when the opening is circular. And, within the above range, it is 0.
The range of 5d ≦ R ≦ 0.8d is preferred.

According to a sixth aspect of the present invention, there is provided the bulb-type fluorescent lamp according to the first or second aspect, wherein the opening of the holder has a short axis _RA where d is the outer diameter of the fluorescent arc tube. , satisfy 0.3d ≦ R _a ≦ 1.2d, the long axis R _B is a ellipse satisfying _{R a ≦ R B ≦ 3R a} , the long axis is arranged along the extending direction of the fluorescent tube It is characterized by being.

In the present invention, an ellipse includes an ellipse and a shape approximate to the ellipse. The approximation also includes, for example, an oval shape in accordance with the characteristics of the present invention.

According to the seventh aspect of the present invention, there is provided a bulb-type fluorescent lamp.
4. The light bulb-shaped fluorescent lamp according to any one of Items 3 to 3, wherein a width of the opening of the holder when viewed from a direction orthogonal to a plane including the bent portion of the fluorescent light emitting tube is the maximum width of the bent portion of the fluorescent light emitting tube to the holder. around the part facing the approaching section, and a distance between the holder and the bending portion in the closest portion to the H ₁ to the left and right, to a position where a distance of H ₂ and the holder and the bent portion satisfies the H ₂ ≦ 2H ₁ It is characterized by being.

In the present invention, the size of the opening is defined by the distance between the surface of the holder and the bent portion of the fluorescent tube. If the distance between the bent portion and the holder is too large, fixing with a silicone adhesive becomes difficult.

According to an eighth aspect of the present invention, there is provided the bulb-type fluorescent lamp according to any one of the first to seventh aspects, wherein the fluorescent luminous tube has an opening of the holder when viewed from a direction parallel to a plane including the bent portion. The front end does not protrude outward from the front end of the fluorescent tube.

In the present invention, the front end of the opening is the end on the peripheral side of the fluorescent tube. That is, when the opening protrudes outward from the bent portion, that is, toward the periphery, the silicone adhesive is likely to protrude outward, so that the above-described predetermined positional relationship is desirable.

According to a ninth aspect of the present invention, there is provided the bulb-type fluorescent lamp according to any one of the first to eighth aspects, wherein the holder has a plate-like shape as a whole and the bent portion of the fluorescent luminous tube. And a recess formed in a portion facing the recess, and the opening is formed in the recess.

In the present invention, a concave portion is formed in a portion facing the bent portion of the fluorescent tube. This recess is a design technique that is adopted as necessary to accommodate a fluorescent tube of a desired length in a given envelope space.
In the present invention, by forming the opening in the concave portion, the silicone adhesive becomes difficult to be seen from the outside, which contributes to the improvement of the appearance.

According to a tenth aspect of the present invention, there is provided a bulb-type fluorescent lamp.
10. The bulb-type fluorescent lamp according to claim 1, wherein the holder has a plate shape as a whole, is formed at a portion facing the bent portion of the fluorescent luminous tube, has a flat bottom surface, and has a slope around the periphery. And the opening is formed in the recess so as to straddle the bottom surface and the slope.

In the present invention, since the opening is formed over the bottom surface of the concave portion and the surrounding slope, the silicone adhesive is hardly seen outside the lamp as much as possible, and the amount of the silicone adhesive used can be reduced. . In addition, a sufficient adhesion area of the adhesive necessary for bonding with a required strength can be obtained.
Further, the concave portion can be reduced to a necessary minimum size.

An eleventh aspect of the present invention provides a bulb-type fluorescent lamp,
The fluorescent lamp according to any one of claims 1 to 10, wherein at least a part of the silicone adhesive is provided across the opening.

In the present invention, since the silicone adhesive straddles the opening, the adhesive expands due to the temperature rise accompanying the lighting of the fluorescent arc tube, and contracts due to the temperature decrease due to the extinguishing. However, by disposing the silicone adhesive over the opening, the adhesive can be deformed in a direction away from the opening in response to the stress, so that there is no possibility that the arc tube is cracked by the stress.

The bulb-type fluorescent lamp according to the twelfth aspect of the present invention
The fluorescent lamp according to any one of claims 1 to 11, wherein the silicone adhesive is also attached to a surface of the holder on which the lighting circuit is provided.

In the present invention, since the adhesive area of the adhesive to the holder can be increased by applying the silicone adhesive to the back side of the opening, the adhesive strength can be improved.

According to a thirteenth aspect of the present invention, there is provided a bulb-type fluorescent lamp.
13. The light-bulb-type fluorescent lamp according to claim 1, wherein the holder is provided with a ridge on at least a part of a periphery of a portion facing the bent portion.

According to the present invention, by forming the projecting portion at a required portion around the bent portion, it is possible to prevent the adhesive from flowing out to the periphery. It also has the effect of making the adhesive less visible.

According to a fourteenth aspect of the present invention, there is provided a bulb-type fluorescent lamp.
The fluorescent lamp according to claim 13, wherein the ridge extends in a plane orthogonal to a plane including the bent portion of the fluorescent arc tube.

The present invention is effective for preventing the bent portion of the silicone adhesive from flowing out in the left-right direction.

According to a fifteenth aspect of the present invention, there is provided a bulb-type fluorescent lamp.
15. The bulb-type fluorescent lamp according to claim 13, wherein the ridge extends in a plane including the bent portion of the fluorescent arc tube.

The present invention is effective for preventing the silicone adhesive from flowing out in the front-rear direction of the bent portion.

The bulb-type fluorescent lamp according to claim 16 is
A fluorescent light emitting tube having a bent portion; and a communication port which holds both ends of the fluorescent light emitting tube and has a larger opening area on a second surface opposite to the first surface facing the bent portion. A holder formed at a position substantially opposed to the bent portion; a silicone adhesive filled between the communication port of the holder and the bent portion to fix the bent portion, and also filled inside the communication port; A lighting circuit for the fluorescent tube disposed on the back; a case for housing the lighting circuit;
And a base provided on the case side.

In the present invention, when the bulb-type fluorescent lamp is turned on with the base up, even if the adhesive force of the silicone adhesive with the holder is lost due to long-term use or the like, the communication port formed in the holder is formed. First facing the bent part of
Since the opening area on the surface is relatively smaller than the opening area on the second surface, the silicone adhesive filled in the communication port does not get caught in the communication port and slip out. Silicone adhesives generally have good adhesion to glass, but weak adhesion to plastics,
When the adhesion with the holder is lost, the bent portion cannot be fixed even if there is no problem with the adhesion with the bent portion of the fluorescent tube.

A bulb-type fluorescent lamp according to the invention of claim 17 is
A fluorescent tube having a bent portion and a flat cross section at the bent portion; a holder holding both ends of the fluorescent tube and formed at a position where a communication port is substantially opposed to the bent portion; A silicone adhesive filled between the communication port of the holder and the uneven surface of the bent portion to fix the bent portion; a lighting circuit of the fluorescent light emitting tube disposed behind the holder; and a case for housing the lighting circuit And a base provided on the case side.

In the present invention, the bent portion of the fluorescent light emitting tube is flattened and the silicone adhesive is applied to the flattened portion, so that the bonding area is increased, and thus sufficiently strong bonding is obtained.

The lighting apparatus according to the eighteenth aspect of the present invention provides the lighting apparatus according to the first aspect.
18. A light-bulb-shaped fluorescent lamp according to any one of Items 17 to 17, and a lighting fixture main body to which the light-bulb-shaped fluorescent lamp is mounted.

According to the present invention, there is provided a lighting fixture having the functions and effects of the invention of the bulb-type fluorescent lamp according to claims 1 to 15. As the lighting equipment, it is applicable to any lighting equipment such as a ceiling-mounted type, a wall-mounted type, and a ceiling hanging type. In addition, it is applicable not only for indoor use but also for outdoor use.

[0059]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of a compact fluorescent lamp of the present invention.
It is a side surface sectional view showing an embodiment.

In the figure, 1 is a fluorescent tube, 2 is a holder, 3 is a case, 4 and 5 are silicone adhesives, 6 is a lighting circuit, 7 is a glove, 8 is an envelope, and 9 is a base.

The fluorescent light emitting tube 1 has both end portions 1a and a bent portion 1b at an intermediate portion. One fluorescent light emitting tube is folded at a central portion to have a length of 、, and further, it is substantially at the center. Turned back, the first straight portion 1c and the second straight portion 1d parallel thereto
And a so-called double U shape having a length of about 1/4. In addition, 1e is a lead wire derived from both ends 1a, 1f is an exhaust tip, and 1g is a filament electrode.

The holder 2 has a disk shape and has a holding portion 2a.
And an opening 2b formed in the board surface. The opening 2b is formed such that its center is deviated from the virtual center line 10 of the bent portion 1a of the fluorescent tube 1 in FIG. 1 toward the center of the fluorescent tube.

Then, both ends 1 a of the fluorescent tube 1 are fixed to the holder 2 by the silicone adhesive 4 at the holding portion 2 a of the holder 2. The bent portion 1b is fixed to the holder 2 by a silicone adhesive 5 injected into the opening 2b from the back of the holder 2.

The case 3 has an inverted cup shape, is covered by the holder 2, and has a space 3a formed therein. On the inner surface of the open end of the holder 2, an engagement projection and a locking portion (not shown) are formed at several places.
Is fitted to the open end of the case 3, the engaging projection abuts on the back surface of the peripheral portion with the front surface of the peripheral portion locked by the locking portion, and the holder 2 and the case 3 are integrated. You.

The lighting circuit 6 is arranged on the back side of the holder 2. This lighting circuit is mainly composed of an inverter, and a circuit component 6a such as a capacitor, a transistor, an inductor, and a resistor is mounted on a wiring board 6b. The wiring board 6b is fixed to the back surface of the holder 2 at an appropriate distance. Note that among the circuit components, the electrolytic capacitor 6c for smoothing the rectified waveform has a height dimension that is inevitably large on the circuit, and is therefore arranged at the highest center position of the space 3a in the case 3. Also,
The fluorescent light emitting tube 1 and the lighting circuit 6 are electrically connected as required by winding the lead wire 1e of the fluorescent light emitting tube 1 around a connection rod 6e projecting from the wiring board 6b on the back side of the holder 2.

The globe 7 is integrated with the case 3 while surrounding the fluorescent tube 1 to form an envelope 8.
That is, the open end 7 a of the glove 7 is fixed by the silicone adhesive 11 in an annular groove formed between the open end of the case 3 and the peripheral edge of the holder 2.

The holder 2 divides the envelope 8 into a light emitting room 8a on the fluorescent tube 1 side and a lighting circuit room 8b on the lighting circuit 6 side.

Next, the operation will be described with reference to FIGS.

FIG. 2 is a side sectional view of a main part of the first embodiment of the present invention.

FIG. 3 is a front cross-sectional view of the main part.

The same parts as those in FIG. 1 are denoted by the same reference numerals. Since the center line 12 of the opening 2b of the holder 2 is deviated from the virtual center line 10 of the bent portion 1b of the fluorescent tube 1 toward the center of the fluorescent tube 1, that is, to the far side (left side in the figure), the fluorescent light is emitted. The silicone adhesive 5 for fixing the bent portion 1b of the tube 1 is not largely exposed on the front side of the bent portion 1b. Therefore, the silicone adhesive 5 does not easily stand out from the outside, and does not protrude to the outside to hinder the appearance.

Since the distance between the bent portion 1b and the holder 2 can be reduced, the amount of the adhesive can be minimized.

Further, since a part of the silicone adhesive 5 straddles the opening 2b, even if stress is applied to the bent portion 1b due to expansion and contraction of the adhesive 5 when the fluorescent tube 1 is turned on, the adhesive is not bonded. The agent 5 does not escape moderately and strongly presses the bent portion 1b. Therefore, there is no fear that cracks occur in the fluorescent light emitting tube 1.

Further, if the silicone adhesive 5 is applied around the opening 2b on the back side of the holder 2 as shown in the figure, the adhesive area of the adhesive 5 to the holder 2 can be increased. There is no lowering by the opening 2b.

In FIG. 3, H ₁ indicates the shortest distance between the bent portion ₁ b and the holder 2, H ₂ indicates a value twice as large as H ₁ , and a surface including the bent portion 1 b (a surface parallel to the plane of FIG. indicating an allowable range W to spread the width of the opening 2b to a position opposite to the height of the H ₂ in). That is, the width is a maximum of W
It can be expanded while maintaining the effects of the present invention.

FIG. 4 is a plan view of the bulb-type fluorescent lamp of the present invention when the opening of the holder is square.

FIG. 5 is a plan view of the bulb-type fluorescent lamp of the present invention when the opening of the holder is rectangular.

When the opening is rectangular or similar as shown in FIGS. 4 and 5, the width D of the opening 2b and the bent portion 1b when viewed from a direction parallel to the plane including the bent portion 1b are different from each other. There is the following allowable range for the width W when viewed from the direction perpendicular to the plane including

0.3d ≦ D ≦ 1.2d 0.3d ≦ W ≦ 3d FIG. 6 is a plan view of the bulb-type fluorescent lamp of the present invention when the opening of the holder is circular.

The present invention has the following allowable range for the diameter R when the opening is circular or similar.

0.3d ≦ R ≦ 1.2d FIG. 7 is a plan view of the bulb-type fluorescent lamp of the present invention when the opening of the holder is elliptical.

[0083] The present invention, when the opening is oval or similar shape, there is a tolerance below its short axis R _A and long axis R _B.

[0084] _{0.3d ≦ R A ≦ 1.2d R A} ≦ R B ≦ 3R A 8 are fragmentary side sectional view showing a second embodiment of the self-ballasted fluorescent lamp of the present invention.

FIG. 9 is a front cross-sectional view of the main part.

The same parts as those in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, the bent portion 1b of the fluorescent tube 1 is used.
There is a feature in that a concave portion 13 is formed in a portion of the holder 2 opposed to. The recess 13 has a flat bottom surface 13a, and a slope 13b is formed around the bottom surface 13a. The opening 2b is formed so as to straddle the bottom surface and the inclined surface 13b.

In this embodiment, since the concave portion 13 is provided, the fluorescent light emitting tube can be made longer by that amount, and the concave portion prevents the silicone adhesive 5 from flowing out to the surroundings, so that the adhesive is not wasted. Further, the contact area between the holder and the adhesive can be increased to increase the adhesive strength, and the adhesive is hard to see.

FIG. 10 is a side sectional view showing a main part of a third embodiment of the bulb-type fluorescent lamp according to the present invention.

The same parts as those in FIG. 2 are denoted by the same reference numerals and description thereof will be omitted.

This embodiment is characterized in that a ridge 14 is formed around the opening of the holder. The ridge 14 is the opening 2
It is not necessary to form on the entire circumference of b, and it may extend in a plane parallel to the plane including the bent portion, that is, in the left-right or front-back direction when viewed from the front. The ridges 14 can regulate the flow of the silicone adhesive 5 and contribute to improving the appearance.

FIG. 14 is a partially sectional front view showing a fourth embodiment of the bulb-type fluorescent lamp of the present invention.

In the drawing, reference numeral 1b denotes a bent portion, and 2 denotes a holder, both of which are at the same positions as those in FIG. 5 is a silicone adhesive.

The holder 2 has a communication port 2'b formed at a position facing the bent portion 1b, and the communication port 2'b is smaller than the opening area of the first surface of the holder 2 facing the bent portion. The opening area of the second surface on the opposite side is formed large. Since the two openings are connected by a straight line, the communication port 2'b has a mortar shape.

In order to bond the bent portion 1b, for example, the nozzle of the silicone adhesive is inserted into the communication port 2'b from above the holder 2 with the bent portion 1b below the holder and the silicone adhesive is adhered. Extrude 5. Then, the extruded silicone adhesive 5 flows down at the position of the bent portion 1b and adheres to the upper surface of the bent portion b and the lower surface of the holder 2, and partially adheres to the inner surface of the communication port 2'b. To cure. Since the communication port 2'b has a mortar shape, even if the adhesion between the silicone adhesive 5 and the holder is lost, the silicone adhesive 5a in the communication port 2'b is closer to the bent portion 1b from the communication port. There is no way to go through.

FIG. 15 is a partial sectional front view showing a fifth embodiment of the present invention.

The same parts as those in FIG. 14 are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, the shape of the communication port 2 "b is different. That is, the relationship between the opening area of the first surface and the opening area of the second surface of the holder 2 is the same as that of FIG. The inner surface of b is a step. The operation is the same as in FIG.

FIG. 16 is a partial sectional front view showing a sixth embodiment of the present invention.

In this embodiment, the bent portion 1b of the fluorescent light emitting tube 1 is flattened, and the silicone adhesive 5 is filled between the uneven surface 1b1 and the communication port 2b of the holder 2.

When the uneven surface 1b1 is formed in the bent portion 1b, the bonding area of the silicone adhesive 5 is relatively increased, and the bonding can be further strengthened.

FIG. 11 is a front view showing an embodiment of the lighting fixture of the present invention.

In the figure, 15 is a bulb-type fluorescent lamp, 1
Reference numeral 6 denotes a lighting fixture body.

The lighting fixture body 16 includes a base 6a, a socket 16b, and a shade 16c.

[0104]

According to the first to seventeenth aspects of the present invention,
Good adhesion workability between the holder and the bent part of the fluorescent tube,
It is possible to provide a bulb-type fluorescent lamp that is resistant to impact and has a good appearance.

According to the second aspect of the present invention, it is possible to provide a bulb-type fluorescent lamp having a globe.

According to the third aspect of the present invention, in addition, the width of the opening when viewed from a direction parallel to a surface including the bent portion of the fluorescent light emitting tube, that is, a lateral direction, with respect to the outer diameter of the fluorescent light emitting tube. Since it is specified, the silicone adhesive can be easily interposed between the bent portion and the holder, and it is possible to provide a bulb-type fluorescent lamp which does not hinder the appearance.

According to the fourth aspect of the present invention, in addition, the width dimension of the opening when viewed from the direction orthogonal to the surface including the bent portion, that is, the front direction is defined with respect to the outer dimensions of the fluorescent tube. It is possible to provide a bulb-type fluorescent lamp in which an adhesive can be easily interposed between the bent portion and the holder and does not impair the appearance.

According to the fifth aspect of the present invention, in addition, it is possible to provide a bulb-type fluorescent lamp capable of obtaining good adhesion and appearance even when the shape of the opening is circular.

According to the sixth aspect of the present invention, it is possible to provide a bulb-type fluorescent lamp capable of obtaining good adhesion and appearance even when the shape of the opening is elliptical.

According to the seventh aspect of the present invention, it is possible to provide a bulb-type fluorescent lamp in which an opening can be formed up to a distance of twice or less the distance of the bent portion from the closest position to the holder.

According to the eighth aspect of the present invention, in addition, since the front end of the opening does not protrude outward from the front end of the bent portion, the silicone adhesive does not protrude. can do.

According to the ninth aspect of the present invention, in addition, a concave portion is formed in the holder so as to face the bent portion and an opening is formed in the concave portion. can do.

According to the tenth aspect of the present invention, since the opening is formed over the bottom surface and the inclined surface of the concave portion, the adhesive strength of the silicone adhesive to the holder can be improved, and the waste of the adhesive can be eliminated. Can be.

According to the eleventh aspect of the present invention, in addition, since the silicone adhesive straddles the opening, the adhesive can escape with respect to the expansion of the adhesive and the expansion of the arc tube, so that the stress can be reduced.

According to the twelfth aspect of the present invention, it is possible to provide a bulb-type fluorescent lamp in which the adhesive strength is improved because the silicone adhesive is also attached to the back side of the holder.

According to each of the thirteenth to fifteenth aspects,
In addition, it is possible to provide a bulb-type fluorescent lamp in which the protrusions prevent the silicone adhesive from undesirably flowing out around the opening.

According to the sixteenth aspect of the present invention, the opening area of the communication port of the holder on the bent portion side is relatively small.
Since the silicone adhesive in the communication port does not slip through the bent portion side, the bent portion can be fixed even if the holder and the silicone adhesive are not adhered.

According to the seventeenth aspect of the present invention, in addition, the bent portion can be more firmly bonded by forming a depressed surface on the bent portion and attaching the silicone adhesive to the depressed surface.

According to the eighteenth aspect, it is possible to provide a lighting fixture having the effects of the first to seventeenth aspects.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a first embodiment of a bulb-type fluorescent lamp of the present invention.

FIG. 2 is a side sectional view of a main part of the first embodiment of the bulb-type fluorescent lamp of the present invention.

FIG. 3 is a front sectional view of the same main part.

FIG. 4 is a plan view of the bulb-type fluorescent lamp of the present invention when the opening of the holder is square.

FIG. 5 is a plan view of the bulb-type fluorescent lamp of the present invention when the opening of the holder is rectangular.

FIG. 6 is a plan view of the bulb-type fluorescent lamp of the present invention when the opening of the holder is circular.

FIG. 7 is a plan view of the bulb-type fluorescent lamp of the present invention when the opening of the holder is elliptical.

FIG. 8 is a side cross-sectional view of a main part showing a second embodiment of the bulb-type fluorescent lamp of the present invention.

FIG. 9 is a front sectional view of the same main part.

FIG. 10 is a side sectional view of a main part showing a third embodiment of a compact fluorescent lamp according to the present invention;

FIG. 11 is a front view showing an embodiment of the lighting fixture of the present invention.

FIG. 12 is a side sectional view showing a first conventional technique.

FIG. 13 is a side sectional view showing a second conventional technique.

FIG. 14 is a partial cross-sectional front view showing a fourth embodiment of a compact fluorescent lamp according to the present invention;

FIG. 15 is a partially sectional front view showing a fifth embodiment of the compact fluorescent lamp of the present invention;

FIG. 16 is a front view, partially in section, showing a sixth embodiment of the compact fluorescent lamp of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fluorescent luminous tube 1a ... Both ends 1b ... Bending part 2 ... Holder 2a ... Holding part 2b ... Opening 3 ... Case 5 ... Silicone adhesive 6 ... Lighting circuit 7 ... Glove 8 ... Envelope 9 ... Base

Claims (18)

[Claims] A fluorescent tube having a bent portion; and a fluorescent center tube which holds both ends of the fluorescent tube and is viewed from a direction parallel to a plane including the bent portion, from a virtual center line of the bent portion. A holder having an opening whose center is located at a position deviated toward the center; and a silicone adhesive fixing the bent portion to the holder between the bent portion and the holder and at least a part of which is attached to the opening. A lighting circuit for the fluorescent tube arranged behind the holder; a case for housing the lighting circuit;
And a base disposed on the case side. 2. A fluorescent light emitting tube having a bent portion; and a fluorescent center tube which holds both ends of the fluorescent light emitting tube and which is viewed from a direction parallel to a plane including the bent portion, from a virtual center line of the bent portion. A holder having an opening whose center is located at a position deviated toward the center; and a silicone adhesive fixing the bent portion to the holder between the bent portion and the holder and at least a part of which is attached to the opening. A lighting circuit for the fluorescent tube arranged behind the holder; a case for housing the lighting circuit;
A light bulb-shaped fluorescent lamp comprising: a base provided on a case side; and a translucent glove forming an envelope together with the case. 3. The width D of the opening of the holder when viewed from a direction parallel to a plane including the bent portion of the fluorescent tube is 0.3d ≦ D ≦ 1 when the outer diameter of the fluorescent tube is d. .2d is satisfied, the compact fluorescent lamp according to claim 1 or 2. 4. The width W of the opening of the holder when viewed from a direction orthogonal to the plane including the bent portion of the fluorescent tube is 0.3d ≦ W ≦ 3d, where d is the outer diameter of the fluorescent tube. The bulb-type fluorescent lamp according to any one of claims 1 to 3, wherein: 5. An opening of the holder, wherein the diameter R is a circle satisfying 0.3d ≦ R ≦ 1.2d, where d is the outer diameter of the fluorescent tube. 2. The bulb-shaped fluorescent lamp according to 2. 6. A holder opening, when the minor axis R _A has an outer diameter of the fluorescent tube is d, and satisfies 0.3 d ≦ R _A ≦ 1.2d, the R _A ≦ major axis R _B 3. The compact fluorescent lamp according to claim 1, wherein the ellipse satisfies R _B ≦ 3R _A , and the major axis is arranged along the extending direction of the fluorescent arc tube. 7. A width of the opening of the holder when viewed from a direction orthogonal to a plane including the bent portion of the fluorescent tube, with respect to a portion opposed to a portion of the bent portion of the fluorescent tube closest to the holder. when the distance between the holder and the bending portion in the closest portion to the H ₁ from there horizontally, and wherein the distance of H ₂ and the holder and the bending portion is to a position that satisfies the H ₂ ≦ 2H ₁ A bulb-type fluorescent lamp according to any one of claims 1 to 3. 8. The fluorescent lamp according to claim 1, wherein the front end of the opening of the holder when viewed from a direction parallel to a plane including the bent portion does not project outward from the front end of the fluorescent tube. 7. The bulb-type fluorescent lamp according to 7. 9. The holder has a disk shape as a whole,
The bulb-type fluorescent lamp according to any one of claims 1 to 8, further comprising a concave portion formed in a portion facing the bent portion of the fluorescent light emitting tube, wherein the opening is formed in the concave portion. 10. A holder as a whole, having a disc shape, formed at a portion facing the bent portion of the fluorescent tube, having a flat bottom surface and a concave portion having a slope around the periphery.
The bulb-type fluorescent lamp according to any one of claims 1 to 9, wherein the opening is formed in the recess so as to extend over the bottom surface and the slope. 11. The silicone adhesive according to claim 1, wherein at least a part of the silicone adhesive is provided across the opening.
11. The compact fluorescent lamp according to any one of items 10 to 10. 12. The bulb-type fluorescent lamp according to claim 1, wherein the silicone adhesive is also applied to the surface of the holder on which the lighting circuit is provided. . 13. The bulb-type fluorescent lamp according to claim 1, wherein the holder has a ridge on at least a part of a periphery of a portion facing the bent portion. 14. The light bulb-shaped fluorescent lamp according to claim 13, wherein the protruding portion extends in a plane orthogonal to a plane including the bent portion of the fluorescent arc tube. 15. The bulb-type fluorescent lamp according to claim 13, wherein the ridge extends in a plane including the bent portion of the fluorescent arc tube. 16. A fluorescent tube having a bent portion; a first tube which holds both ends of the fluorescent tube and faces the bent portion.
A holder formed at a position where a communication opening having a larger opening area on the second surface opposite to the opening area on the second surface is substantially opposed to the bent portion; filled between the communication hole of the holder and the bent portion; A silicone adhesive that also fills the inside of the communication port while fixing the bent portion; a lighting circuit of the fluorescent luminous tube provided behind the holder; a case for housing the lighting circuit; And an installed base. 17. A fluorescent luminous tube having a bent portion and having a flat cross-sectional shape at the bent portion; holding both ends of the fluorescent luminous tube and forming a communication port at a position substantially opposed to the bent portion. A silicone adhesive filled between the communication port of the holder and the uneven surface of the bent portion to fix the bent portion; a lighting circuit of a fluorescent arc tube disposed behind the holder; A case for storing the circuit;
And a base disposed on the case side. 18. A lighting fixture comprising: the bulb-shaped fluorescent lamp according to claim 1; and a lighting fixture main body to which the bulb-shaped fluorescent lamp is mounted.