JP4385303B2 - Fluorescent lamp device - Google Patents

Description

  The present invention relates to a single-piece fluorescent lamp device having a base at one end.

  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.

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 (see, for example, Patent Document 1).
Japanese Laid-Open Patent Application No. 08-17222 (FIG. 2, paragraphs 0021-0022)

  However, even when the engaging claw is formed at the tip of the holding body, the holding body cannot be accurately positioned when the engaging claw is engaged with the engaging portion of the inner surface of the base body during manufacture. It is difficult to engage the engaging claws by inserting the holding body, which causes a problem in assembling.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a fluorescent lamp device with improved assemblability by accurately positioning a holding body.

  The fluorescent lamp device according to claim 1 has a base having an engaging portion formed on the inner surface side having a base at one end and the other end opened and spaced from the other end; a fluorescent lamp; and a cylindrical shape A holder having a fluorescent lamp mounted with a cylindrical portion and an engaging claw that is formed on a peripheral side surface of the cylindrical portion and engages with the engaging portion of the base when inserted into the base; And a guide portion having a taper whose tip is inclined in the insertion direction so as to guide the engagement claw to the engagement portion when the holding body is inserted on the base side.

  By providing guide portions for guiding the engaging claws to the engaging portions on both sides of the engaging claws of the holding body, the engaging claws are guided to the engaging portions when the holding body is inserted into the base side. The positioning at the time of manufacture when inserting the holding body into the base becomes easy.

  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.

  According to a third aspect of the present invention, in the fluorescent lamp device according to the first or second aspect, the engaging claw of the holding body is formed at a position spaced from the distal end in the insertion direction of the holding body. And By forming the engaging claws of the holding body at a position away from the distal end in the insertion direction, strength can be obtained without reinforcing the surrounding thickness of the engaging claws. Since it does not occur or the dimensional accuracy does not deteriorate, the assembly accuracy of the holding body and the base body is improved. In addition, since there is no engaging claw at the end of the holding body, it is possible to make the end flat, and in such a case, it is possible to suppress the occurrence of problems during automatic assembly.

  According to a fourth aspect of the present invention, there is provided the fluorescent lamp device according to the third aspect, wherein the base is smaller in diameter than the side on which the inner periphery on the base side is open, and the holding body is substantially cylindrical and has an engaging claw. The tip in the insertion direction is formed with a smaller diameter than the rear end in the insertion direction, and the base has a smaller inner circumference on the base side, but the insertion direction of the holding body can be reduced by reducing the diameter of the tip in the insertion direction. The distance from the tip to the engaging claw can be increased.

  According to the fluorescent lamp device of the first aspect, the guide unit is provided on both sides of the engaging claw on the peripheral side surface of the cylindrical portion of the holding body and guides the engaging portion of the base body when the holding body is inserted. Therefore, the positioning at the time of manufacture when inserting the holding body into the base body can be facilitated, and the assemblability of the holding body and the base body can be improved.

  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 light bulb shape can be formed.

  According to the fluorescent lamp device of the third aspect, in addition to the fluorescent lamp device of the first or second aspect, the engaging claw of the holding body is formed at a position spaced from the distal end in the insertion direction. Since strength can be obtained without reinforcing the surrounding wall thickness, there is no sink or dimensional accuracy is reduced, so that the assembly accuracy of the holder and the base can be improved. .

  According to the fluorescent lamp device of the fourth aspect, in addition to the fluorescent lamp device of the third aspect, 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 engaged in a substantially cylindrical shape. Since the tip in the insertion direction is smaller in diameter than the rear end in the insertion direction from the nail, the base has a smaller inner diameter on the base side, but the insertion direction of the holding body can be reduced by reducing the diameter of the tip in the insertion direction. The distance from the tip to the engaging claw can be increased.

  Hereinafter, an embodiment of a fluorescent lamp device according to the present invention will be described with reference to FIGS.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  Next, a fluorescent lamp device according to another embodiment will be described with reference to FIG.

  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.

  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.

  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.

  The operation and effect are the same as those of the embodiment shown in FIGS.

  Further, a fluorescent lamp device according to another embodiment will be described with reference to FIGS.

  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.

  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.

  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.

  The operation and effect are the same as those of the embodiment shown in FIGS.

It is the side view which notched a part of fluorescent lamp device of one embodiment of the present invention. It is sectional drawing which shows the assembly state of a base | substrate and a holding body same as the above. It is sectional drawing of the case body of a fluorescent lamp device same as the above. It is sectional drawing which shows a base same as the above. It is the side view which notched a part of the fluorescent lamp device of other embodiment same as the above. It is the side view which notched a part of the fluorescent lamp device of other embodiment same as the above. It is a side view which shows a holding body same as the above.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,41,61 ... Fluorescent lamp apparatus, 2 ... Fluorescent lamp, 4 ... Partition as a holding body, 5 ... Cylindrical part 7, 64 ... Engagement claw, 10 ... -Guide part, 15, 42 ... Base, 19, 49 ... Engagement part, 25 ... Base, 35, 43 ... Globe, 62 ... Fixed body as a holding body.

Claims (4)

A base having a base at one end, an opening at the other end, and an engaging portion formed on the inner surface side spaced from the other end;
With fluorescent lamps;
A cylindrical cylindrical part and a holder formed on the peripheral side surface of the cylindrical part and having an engaging claw that engages with the engaging part of the base when inserted into the base;
A guide portion provided on both sides of the engaging claw of the holding body and having a taper whose tip is inclined in the insertion direction so as to guide the engaging claw to the engaging portion when the holding body is inserted into the base side;
A fluorescent lamp device comprising:   2. The fluorescent lamp device according to claim 1, further comprising a glove that is translucent and attached to the base body and is substantially bulb-shaped with the base body.   The fluorescent lamp device according to claim 1 or 2, wherein the engaging claw of the holding body is formed at a position spaced from the distal end of the holding body in the insertion direction.   The base is smaller in diameter than the side where the inner periphery on the base side is open, and the engaging claw is formed at a position spaced from the front end side of the holding body in the base insertion direction. 4. The fluorescent lamp device according to claim 3, wherein the distal end in the insertion direction is formed to be smaller in diameter than the rear end in the insertion direction.

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