JP3991248B2 - Fluorescent lamp device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a single-piece fluorescent lamp device having a base at one end.
[0002]
[Prior art]
Conventionally, this type of fluorescent lamp device has a base having a base at one end and an opening at the other end, and a holder to which the fluorescent lamp is mounted is attached to the base, and further, a light bulb type is formed with the base. A glove is attached to the substrate.
[0003]
Further, as a structure for attaching the holding body to the base body, an engaging portion is formed on the inner surface of the base body, an engaging claw is protruded from the tip of the holding body on the base side, and the engaging claw at the front end of the holding body is used as the base body. The holding body is attached to the base body by engaging with the engaging portion on the inner surface of the substrate.
[0004]
[Problems to be solved by the invention]
However, when the engaging claw is formed at the tip of the holding body, it is necessary to make the periphery of the engaging claw thick in order to maintain the strength of the engaging claw. If the thickness is made thicker, sink marks or dimensional accuracy is difficult to be obtained, and there is a problem in assembling.
[0005]
The present invention has been made in view of the above problems, and an object thereof is to provide a fluorescent lamp device with improved assemblability.
[0006]
[Means for Solving the Problems]
The fluorescent lamp device according to claim 1 has a cap at one end, an opening at the other end, and a protrusion formed on the inner surface side that is spaced from the other end so that the cross-section becomes a taper that can be easily inserted from the opening side. And a base having a positioning contact portion projecting from the inner surface on the other end side of the engaging portion ; a fluorescent lamp; a cylindrical portion and a peripheral side surface of the cylindrical portion The engaging claw is formed at a position spaced from the front end side in the base body insertion direction, and engages beyond the taper of the engaging portion of the base body after being inserted from the opening side of the base body . those provided with the; base insertion direction leading end of the cylindrical portion in a combined state are attached to a substrate in contact with the positioning contact portion of the substrate, the fluorescent lamp and the holder is mounted.
[0007]
Further, the engaging claw of the holding body is formed at a position spaced from the front end side in the base body insertion direction on the peripheral side surface of the cylindrical cylindrical portion, thereby reinforcing the surrounding thickness of the engaging claw. Since strength can be obtained without the need for sinking, there is no sink or deterioration in dimensional accuracy, so that the assembly accuracy of the holding body and the base body is improved. In addition, since there is no engagement claw protruding from the end of the holding body, in such a case, it is possible to suppress the occurrence of problems when performing automatic assembly or the like. Further, the engaging claws of the holding body engage with the tapered engaging portion, and the tip of the cylindrical portion in the direction of inserting the base comes into contact with the positioning contact portion of the base, so that the assemblability is improved.
[0008]
The fluorescent lamp device according to claim 2 is a fluorescent lamp device according to claim 1, which is provided with a light-transmitting glove that is attached to the base and has a substantially bulb shape together with the base. Form a light bulb shape.
[0009]
According to a third aspect of the present invention, there is provided the fluorescent lamp device according to the first or second aspect, wherein the base is smaller in diameter than the side on which the inner periphery on the base side is open, and the engaging claw is the base of the holding body. is formed at a position away from the insertion direction leading end side, the carrier, engages the insertion direction leading end than claw than those formed in the smaller diameter than the insertion direction rear end, the substrate inner circumference diameter of the ferrule side Although it is small, the distance from the distal end in the insertion direction of the holding body to the engaging claw can be increased by reducing the diameter at the distal end in the insertion direction.
[0010]
A fluorescent lamp device according to a fourth aspect is the fluorescent lamp device according to any one of the first to third aspects, wherein the base is provided in the vicinity of the engaging claw on the outer peripheral surface of the holding member when the holding member is inserted. A guide portion for guiding is provided. By guiding the engaging portion of the base body, positioning at the time of manufacturing when the holding body is inserted into the base body is facilitated.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a fluorescent lamp device according to the present invention will be described with reference to FIGS.
[0012]
1 is a side view of the fluorescent lamp device with a part cut away, FIG. 2 is a cross-sectional view showing the assembled state of the base and the holder, FIG. 3 is a cross-sectional view of the case body of the fluorescent lamp device, and FIG. FIG.
[0013]
As shown in FIG. 1, a fluorescent lamp device 1 has a fluorescent lamp 2, a tube inner diameter of 6 mm to 9 mm and a height of 50 mm to 65 mm, which is arranged in four corners of a square and bent into a U shape with a circular cross section. One glass bulb 3 is provided, and one bent discharge path having a length of 200 mm to 300 mm is formed.
[0014]
The fluorescent lamp 2 is attached to a partition body 4 as a plastic holder such as PBT. That is, as shown in FIGS. 1 to 3, the partition member 4 has a substantially cylindrical cylindrical portion 5 having an opening in the insertion direction, and the axial length of the cylindrical portion 5 is, for example, about A flange portion 6 protrudes along the circumferential direction at a position 7 mm from the distal end in the insertion direction of the cylindrical portion 5 at 20 mm, that is, substantially in the insertion direction of the partition body 4. A plurality of engagement claws 7 having a taper on the distal end side in the insertion direction are formed so that the insertion is easy to insert with a predetermined interval and difficult to come off. In addition, the lower cylindrical portion 9 on the distal end side in the insertion direction from the flange portion 6 is formed smaller in diameter than the upper cylindrical portion 8 on the rear end side in the insertion direction from the flange portion 6. Further, on the distal end side in the insertion direction of the engaging claw 7, there is a guide portion 10 having a taper so that the distal end is inclined in the insertion direction along both sides of the engaging claw 7 and can be easily positioned on the engaging claw 7. Is formed. Further, the base end side in the insertion direction is closed by a partition plate 11. A circular insertion hole 12 in which the bulb 3 of the fluorescent lamp 2 is inserted and held is formed in the partition plate 11 in accordance with the position of the bulb 3.
[0015]
Further, the partition 4 is fitted and held on a plastic base 15 such as PBT. That is, the base body 15 has a substantially cylindrical base portion 16 on the base end side, and an expanded portion 17 that is expanded upward is formed above the base portion 16, and an upper end of the expanded portion 17 is An opening edge 18 is formed. Further, an engaging portion 19 having a taper in a direction in which the partition body 4 is easily inserted and is not easily removed through a distance from the expanding portion 17 is formed to protrude from the lower portion of the engaging portion 19. A recess 20 into which the tip of the partition 4 is inserted is formed, and a plurality of positioning contact portions 21 with which the edge of the tip of the partition 4 on the insertion side abuts are formed on the inner surface along the axial direction. Further, a lighting circuit (not shown) is accommodated in the space within the expanding portion 17, and a cutout portion 22 through which a lead wire drawn out from the lighting circuit is inserted is formed in the base portion. In addition, the lighting circuit and the fluorescent lamp 2 side are partitioned by the partition body 4 to prevent mutual heat effects and the like.
[0016]
Further, an Edison type base 25 such as E26 type is attached to the base portion 16 of the base body 15. As shown in FIG. 4, the base 25 is provided with a tip base portion 27 having a substantially U-shaped cross section attached to the tip of an insulator 26 such as glass, and is cylindrical and spaced from the tip base portion 27 in a socket. A screw base part 30 having a screw part 28 to be screwed and having a holding piece part 29 inserted and held in the insulator 26 is attached to the tip side. In order to increase the storage space of the base body 15 on the inner surface side of the insulator 26, for example, a storage recess 31 for storing an electrolytic capacitor (not shown) is formed, but the holding piece portion 29 of the screw base portion 30 is formed. Since the shape is in conformity with the outer shape of the insulator 26, the radius of curvature is increased, and the tip is directed toward the tip cap portion 27 to reduce the amount of penetration into the insulator 26. Thus, the holding piece portion is not small in radius of curvature so that the insulator 26 is not enlarged, and the distance d, which is the glass wall thickness, is set to 8.5 mm or less to maintain the insulation and the strength. The storage recess 31 can be formed larger in the state. The height of the base 15 including the base 25 is 100 mm to 125 mm.
[0017]
Further, a light-transmitting globe 35 that includes the fluorescent lamp 2 is attached to the opening side of the base 15. That is, the globe 35 is substantially in the form of a light bulb together with the base body 15, a small diameter small portion 36 is formed on the proximal end side of the globe 35, and the small diameter portion 36 is located in the opening edge 18 of the base body 15, The tip of the small-diameter portion 36 contacts the engaging portion 19, and in this state, an adhesive is injected between the globe 35 and the base body 15, and the globe 35 is attached to the base body 15.
[0018]
As described above, by providing the engagement claw 7 of the partition body 4 that engages with the engagement portion 19 of the base body 15 in the middle of the insertion direction of the partition body 4, unlike the case of providing the end portion as in the prior art, It is not necessary to increase the thickness of the end portion as a reinforcement for preventing the engagement claws from being broken, and there is no occurrence of sink marks or a decrease in dimensional accuracy, so that the assemblability is improved.
[0019]
Further, by reducing the outer shape of the lower cylindrical portion 9 below the upper cylindrical portion 8 above the engaging claw 7 of the partition body 4, without reducing the area of the partition plate 11 on which the fluorescent lamp 2 is mounted, The distance inserted into the base 15 is increased.
[0020]
Further, since the engaging portion 19 of the base body 15 is guided and inserted by the guide portions 10 formed on both sides of the engaging claw 7 of the partition body 4, the manufacture is facilitated.
[0021]
Next, a fluorescent lamp device according to another embodiment will be described with reference to FIG.
[0022]
FIG. 5 is a side view in which a part of the fluorescent lamp device is cut away. The fluorescent lamp device 41 shown in FIG. 5 is the same as the fluorescent lamp device 1 shown in FIG. It is a thing.
[0023]
For this reason, the base 42 has a substantially cylindrical base 44 on the base end side, an expanded portion 45 that is expanded upward is formed above the base 44, and an opening edge 46 is formed at the upper tip. ing. Further, a cylindrical engagement tube 47 is formed inwardly from the middle part of the expanded portion 45, and the upper end is tapered in a direction in which an opening edge 48 is formed and the partition 4 is easily inserted and is not easily removed. An engaging portion 49 having a protrusion is formed, and a plurality of positioning contact portions 51 with which the edge of the distal end on the insertion side of the partition 4 abuts are formed on the inner surface along the axial direction. Further, a lighting circuit (not shown) is accommodated in the space within the expanding portion 17, and a notch (not shown) through which a lead wire drawn out from the lighting circuit is inserted is formed in the base portion 16.
[0024]
Further, the periphery of the opening of the globe 43 is also formed with a small diameter, and is accommodated in the opening edge 46 of the expanding portion 45 of the base 42, and an adhesive or the like is injected and attached thereto.
[0025]
The operation and effect are the same as those of the embodiment shown in FIGS.
[0026]
Further, a fluorescent lamp device according to another embodiment will be described with reference to FIGS.
[0027]
FIG. 6 is a side view in which a part of the fluorescent lamp device is cut away, and FIG. 7 is a side view showing the holding body.
[0028]
The fluorescent lamp device 61 shown in FIGS. 6 and 7 is obtained by removing the globe and the partition plate and attaching a fixed body 62 as a holding body to the base body 15 in the embodiment shown in FIGS.
[0029]
As shown in FIG. 6, the fixed body 62 has a substantially cylindrical cylindrical portion 63 having an opening in the insertion direction, and the axial length of the cylindrical portion 63 is about 20 mm, for example. A plurality of engaging claws 64 having a taper on the distal end side in the insertion direction are formed at a position 9.5 mm from the distal end in the insertion direction of the cylindrical portion 63, that is, substantially at the center in the insertion direction of the fixed body 62. Further, an inclined surface portion 65 that continuously adjusts the shape from the outer surface of the base body 15 is formed above the engaging claw 64, and is closed by a fixing plate 66 on the rear end side in the insertion direction. A circular insertion hole into which the bulb 3 of the fluorescent lamp 2 is inserted and held is formed in the fixed plate 66 in accordance with the position of the bulb 3.
[0030]
The operation and effect are the same as those of the embodiment shown in FIGS.
[0031]
【The invention's effect】
According to the fluorescent lamp device of the first aspect, the engagement claw is formed on the peripheral side surface of the cylindrical cylindrical portion at a position spaced from the front end side in the base body insertion direction. Since strength can be obtained without reinforcing such as increasing the thickness, there is no sink or deterioration in dimensional accuracy, so that the assembly accuracy of the holder and the base can be improved. Further, the engaging claws of the holding body engage with the tapered engaging portion, and the tip of the cylindrical portion in the direction of inserting the base comes into contact with the positioning contact portion of the base, so that the assemblability is improved.
[0032]
According to the fluorescent lamp device of the second aspect, in addition to the fluorescent lamp device of the first aspect, since the light-transmitting and attached glove that is attached to the base and is substantially bulb-shaped together with the base, the assemblability is improved. Thus, a bulb shape can be formed.
[0033]
According to the fluorescent lamp device of the third aspect, in addition to the fluorescent lamp device of the first or second aspect, the base is smaller in diameter than the side where the inner periphery on the base side is open, and the holding body is substantially cylindrical. Since the distal end in the insertion direction is smaller in diameter than the rear end in the insertion direction from the engaging claw, the base has a smaller inner diameter on the base side, but by reducing the diameter at the distal end in the insertion direction, The distance from the tip in the insertion direction to the engaging claw can be increased.
[0034]
According to the fluorescent lamp device according to claim 4, in addition to the fluorescent lamp device according to any one of claims 1 to 3, the engaging portion of the base member provided in the vicinity of the engaging claw on the outer peripheral surface of the holding member is held by the holding member. Since the guide portion that guides when inserting the holder is provided, positioning during manufacture when the holding body is inserted into the base can be facilitated.
[Brief description of the drawings]
FIG. 1 is a side view in which a part of a fluorescent lamp device according to an embodiment of the present invention is cut away.
FIG. 2 is a cross-sectional view showing an assembled state of the base body and the holding body.
FIG. 3 is a cross-sectional view of a case body of the fluorescent lamp device.
FIG. 4 is a sectional view showing the vicinity of the base.
FIG. 5 is a side view in which a part of a fluorescent lamp device according to another embodiment is cut away.
FIG. 6 is a side view in which a part of a fluorescent lamp device according to another embodiment is cut away.
FIG. 7 is a side view showing the holding body.
[Explanation of symbols]
1, 41, 61 Fluorescent lamp device 2 Fluorescent lamp 4 Partition as holder
5 Cylindrical parts 7, 64 Engaging claw
10 Guide section
15, 42 Base
19, 49 Engagement part
25 base
35, 43 Gloves
62 Fixed body as holder

Claims (4)

An engagement portion that has a base at one end and has an opening at the other end and a protrusion formed so that the cross section of the inner surface is spaced from the other end so that the cross section can be easily inserted from the opening side, and the engagement portion A base having a positioning contact portion protruding from the inner surface on the other end side ;
With fluorescent lamps;
The cylindrical cylindrical portion and the peripheral side surface of the cylindrical portion are formed at a position spaced from the front end side in the base body insertion direction, and after being inserted from the base opening side, are engaged beyond the taper of the base engaging portion. With the engaging claw to be engaged, with the engaging claw engaged, the tip of the cylindrical part in the base insertion direction comes into contact with the positioning contact part of the base and is attached to the base, and the fluorescent lamp is mounted With the body;
A fluorescent lamp device comprising:   2. The fluorescent lamp device according to claim 1, further comprising a glove that is translucent and is attached to the base and is substantially bulb-shaped with the base.   The base body is smaller in diameter than the side on which the inner periphery on the base side is open, and the holding body is formed with a diameter smaller than a rear end in the insertion direction than an engagement claw. 3. The fluorescent lamp device according to 1 or 2.   4. The fluorescent lamp device according to claim 1, further comprising a guide portion that is provided in the vicinity of the engaging claw on the outer peripheral surface of the holding body and guides the engaging portion of the base body when the holding body is inserted. .

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