JPS6380403A - Flanged bulb mounting apparatus - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The mounting device for a flanged light bulb according to the present invention will be described in accordance with the following items.

A. Industrial application field Summary of B0 invention C1 conventional technology Problems that the invention attempts to solve Means to solve the E1 problem F. Example 80 reflector [Figures 1 to 4] b. Retaining ring [Figures 1 to 3, Figures 5 to 8] C0 flange light bulb [Fig. 1 to 3, Fig. 9, Fig. 10] Attaching the flanged light bulb to the 60 reflector [Figures 1 to 3] Effect of G1 invention (A. Industrial application field) The present invention relates to a novel mounting device for a flanged light bulb.

In detail, it is a device for attaching a flanged light bulb to an envelope that houses the light emitting part of the light bulb inside a reflector, lamp body, etc. The object of the present invention is to provide a novel mounting device for a flanged light bulb that has excellent strength and is inexpensive to manufacture.

(B. Summary of the Invention) The mounting device for the flanged light bulb of the present invention consists of a mounting tube provided in an envelope and a retaining ring detachably attached to the mounting tube, which is formed on the outer circumferential surface of the mounting tube. engaging the mounting cylinder and the retaining ring by engaging the plurality of circumferentially extending engaging protrusions formed on the retaining ring with a plurality of circumferentially extending engaging edges formed on the retaining ring;
The flange body of the flange light bulb is held between these two to attach the flange bulb to the envelope, and the rotation prevention protrusion of the retaining ring is engaged with the rotation prevention notch of the flange body of the flange light bulb. This makes it possible to increase the strength, especially the strength of the mounting tube, compared to conventional ones, reduce manufacturing costs, and prevent the retaining ring from loosening, rattling, or coming off. It can be eliminated.

(C, Prior Art) Japanese Patent Application Publication No. 2003-100002 of a mounting device for a flanged light bulb that is attached to an envelope using a mounting tube provided with a flanged light bulb in the envelope and a retaining ring attached to the mounting tube. There is one shown in No. 58-123653.

In the mounting device for a flanged light bulb disclosed in JP-A-58-123653, a retaining ring (lock collar 150) is attached to a mounting tube (socket 14) formed integrally with the envelope (light reflecting device sealing body 10). Attach the mounting tube (14) and retaining ring (150
) The flange body (flange 122) of the flange light bulb is sandwiched between the flange body (flange 122) and the flange light bulb is attached to the envelope (1o).

The attachment of the retaining ring (150) to the attachment tube (14) is accomplished by forming several holes on the outer peripheral surface of the attachment gap (14), including an open end (20), a cam passage (22), and a closed end (24). On the other hand, a plurality of thread passage following elements (154) are formed in the retaining ring (150), and the thread passage following elements (154) of the retaining ring (150) are connected to the thread passage of the mounting tube (14). The retaining ring (150) is attached to the mounting tube (14) by engaging with the retaining ring (150).
It is removably attached to the

(D. Problem to be solved by the invention) By the way, the above-mentioned conventional mounting device for a flanged light bulb (Japanese Patent Laid-Open No. 58-1236
53), the envelope (1o)
Since several screw passages are formed on the outer circumferential surface of the mounting tube (14) provided in If the envelope (10) is made of FRP, for example, this may cause the envelope (10) to crack.

In addition, since the threaded passage formed on the outer peripheral surface of the mounting tube (14) is L-shaped, it cannot be molded without using a complicated mold or device such as a slide mold. There is a problem in that the cost is high.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a novel mounting device for a flanged light bulb that has excellent strength and is inexpensive to manufacture.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the mounting device for the flanged light bulb of the present invention has a plurality of engagements extending in the circumferential direction on the outer peripheral surface of the mounting tube having the receiving part. A plurality of retaining edges protruding inward and extending in the circumferential direction are formed at the front end of the retaining ring, which has a retaining ring that is approximately cylindrical and has a retaining edge that protrudes inward, and the retaining ring is The retaining ring is coupled to the mounting tube by fitting the retaining ring onto the mounting tube and engaging the retaining edge of the retaining ring with the engagement protrusion of the attaching tube;
The flange body of the flange light bulb is held between the two, and the flange bulb is attached to the envelope, and the retaining projection of the retaining ring is engaged with the rotation stop notch of the flange body of the flange bulb. This is what I did.

Therefore, in the mounting device for a flanged light bulb of the present invention, there is no particularly thin part in the mounting tube, so sufficient strength can be obtained, and even when the envelope is made of FRP, the portion of the mounting tube Moreover, since the mounting tube in the mounting device for a flanged light bulb of the present invention can be formed by cutting after molding, it can be manufactured at low cost. Furthermore, the engagement between the retaining projection of the retaining ring and the rotation-preventing notch of the flanged body of the flanged light bulb prevents the retaining ring from loosening, rattling, or coming off.

(F. Example) The details of the mounting device for a flanged light bulb of the present invention will be described below according to the illustrated example.

(a, reflecting mirror) [Figures 1 to 4 1 is a reflecting mirror as an envelope.

The reflective mirror 1 is made of FRP, and a reflective surface is formed on its inner surface by appropriate means such as metal deposition or reflective coating.

Reference numeral 2 denotes a mounting tube protruding from approximately the center of the rear surface of the reflecting mirror 1, and the interior of the reflecting mirror 1 is communicated with the rear side through this mounting tube 2. The outer circumferential surface of the mounting tube 2 has a raised portion 2a having an outer circumferential surface parallel to the center line of the attachment tube 2 at the base.
, a first tapered part 2b that is connected to the rising part 2a and has an outer circumferential surface that slopes inward as it goes rearward; It is composed of a second tapered portion 2c having a surface inclined to the side thereof, and a cylindrical portion 2d having an engagement protrusion (to be described later) formed thereon, having a diameter smaller than that of the raised portion 2a, and having an outer peripheral surface parallel to the outer peripheral surface of the raised portion 2a. The angle between the first tapered portion 2b and the center line of the mounting tube 2 is more obtuse than that of the second tapered portion 2c. The first tapered portion 2b and the second tapered portion 2C on the outer circumferential surface of the mounting tube 2 can be formed by rotating the reflecting mirror 1 about its optical axis and cutting it with a cutting tool. In this case, since the first tapered portion 2b and the second tapered portion 2C are tapered, the raised portion 2a and the cylindrical portion 2d are connected to each other in a plane perpendicular to the center line of the mounting tube 2. The tooth length of the cutting tool can be made longer than in the case of the cutting tool, and the life of the cutting tool can be extended.

Reference numeral 3 denotes an annular receiving edge integrally formed so as to protrude inward from the inner surface of the mounting tube 2, and a predetermined distance is maintained between the rear surface of this receiving edge 3 and the rear surface of the mounting tube 2. ing.

Then, at a predetermined interval on the inner peripheral edge of the receiving edge 3,
Positioning protrusion 3 for positioning a flanged light bulb to be described later
a, 3a, 3a are formed.

4.4.4 is an engagement protrusion, which is formed to extend in the circumferential direction along the rear end of the outer peripheral surface of the mounting tube 2.

These engaging protrusions 4.4.4 are formed at approximately equal intervals in the circumferential direction.

Incidentally, the envelope does not have to be a reflecting mirror, and may be a simple container-shaped lamp body in which a separate reflecting mirror is held, or another type of lamp body.

(b, Retaining Ring) [FIGS. 1 to 3, FIGS. 5 to 8] Reference numeral 5 denotes a retaining ring, which is formed into a substantially cylindrical shape with a short length in the axial direction. The outer circumferential wall of the retaining ring 5 is formed with a bulge 6.6.6 that partially projects outward. These bulges 6.6.6 are formed at approximately equal intervals in the circumferential direction and have a predetermined length in the circumferential direction.

A substantially annular presser edge 7 that protrudes inward is formed at the rear end of the retainer ring 5 . An annular protrusion 7a that slightly protrudes rearward is formed on the inner circumferential edge of the presser edge 7, and the top of the protrusion 7a is rounded so that a person handling the retaining ring cannot The edges are designed to prevent injury.

8.8.8 is an engagement edge formed at the front end of the holding yA5. The engaging edge 8.8.8 projects inwardly from the front end of the bulge 6.6.6, and the amount of inward protrusion is equal to the bulge of the bulge 6.6.6. The amount of output is approximately equal to the amount of output.

The engaging edge 8.8.8 is formed from the counterclockwise end of the bulge 6.6.6 when viewed from the rear, and its length is the circumference of the bulge 6.6.6. Therefore, there is a gap 9.9.9 between the tip of the engaging edge 8.8.8 and the clockwise end of the bulge 6.6.6. The length of the gap 9.9.9 is slightly longer than the circumferential length of the engaging protrusion 4.4.4 formed on the mounting tube 2.

In addition, the rear surface of the distal end of the engaging edge 8.8.8 is inclined so that the wall thickness becomes thinner toward the distal end, so that it can be easily attached to the tube 2 as described later. ing.

10.10.10 is a protrusion formed along the inner edge of the engagement tt8.8.8 and protruding rearward.

11.11.11 is the bulging portion 6.6 of the presser foot a7.
It is a hole formed at a location corresponding to 6, and the engaging edge 8.8
．． 8 in the longitudinal direction, and the engagement edge 8.8.8
It is formed into slightly larger grains than the size of the grain. These holes 11
．． 11.11 is necessary for forming the engaging edge 8.8.8.

Reference numeral 12 denotes a rotation prevention protrusion formed at a suitable position on the front surface of the presser edge 7, and the rotation prevention protrusion 12 has two slopes 1 facing each other in the rotation direction.
2a and 12b, and a slope 12a on the rotation direction side when locking.
is formed on a gentle slope, and the slope 12 on the rotation direction side when anti-locking is formed.
b is formed on a steep slope, which allows the locking state to be easily set, and also prevents the locking from being easily released in the locked state. (Figure 8(a)).

This is because when the retaining protrusion is rod-shaped (Fig. 8 (b)), the rotation retaining protrusion is likely to be damaged when the locking or unlocking is retracted, and the retaining protrusion is This was done in view of the fact that in the case of a chevron-shaped one with a gentle slope (Fig. 8 (C)), the size in the rotation direction becomes too large and rotation becomes too hard when locking or unlocking. It is something.

13.13.13 is a bulb holding protrusion formed on the front surface of the holding edge 7.

The color of the retaining ring 5 may be any color, but if it is made in a color that stands out even at night, such as green, yellow, or orange, especially fluorescent color, it will be easier to perform tasks such as replacing light bulbs at night.

(c, flange light bulb) [Figures 1 to 3, Figures 9, 10
Figure] 14 is a flange light bulb.

The flanged light bulb 14 is a glass bulb 1 in which a filament is sealed.
5 and a base portion 16 that holds the glass bulb 15.

The base portion 16 is made of an insulating material such as synthetic resin, has a substantially circular shape, and is divided into a light bulb holding portion 18 and a connector portion 19 by a partition wall 17 provided in the middle.

The base of the glass bulb 15 is fixedly held in the bulb holding part 18 with a suitable cement, and the terminals 20, 20, 20 are held in the connector part 19, and these terminals 20, 20, 20 and An external lead (not shown) led out from the glass bulb 15 is connected.

A collar body 21 is integrally formed that projects outward from a position approximately in the middle of the outer peripheral surface of the mouthpiece 16 in the front-rear direction.
Rotation stop notches 22, 22, 22 are formed at equal intervals on the outer peripheral edge of the collar body 21.

An annular fitting groove 23 is formed on the outer peripheral surface of the base portion 16 slightly forward of the position where the flange body 21 is formed.
3 has an O-ring 24 fitted and supported.

Furthermore, three positioning notches 25 are provided at predetermined intervals on the outer peripheral surface of the base portion 16 slightly forward of the position where the fitting groove 23 is formed.
25.25 are formed so that they can engage with positioning protrusions 3a, 3a, 3a formed on the receiving edge 3 of the mounting tube 2.

(d. Attachment of flanged light bulb to reflector) [Figs. 1 to 3] The flanged light bulb 14 described above is attached to the reflector 1 in the following manner.

First, the glass bulb 15 of the flanged light bulb 14 is inserted into the reflector 1 from the rear of the mounting tube 2 of the reflector 1, and the positioning notches 25, 25, 25 of the base 16 of the flanged light bulb 14 are inserted into the mounting tube 2. Ukeen 3
The front surface of the collar body 21 is connected to the receiving portion 2, which is the rear end surface of the mounting tube 2, by engaging with the positioning protrusions 3a, 3a, 3a formed on the
Abuts on e. At this time, the holding notches 22.22.22 formed in the flange body 21 of the flange light bulb 14 are aligned with the flat recesses 4a, 4a, 4a formed in the engagement protrusion 4.4.4 of the mounting tube 2. When inserted in this way, positioning is easy.

Next, hold fi from the rear end side of the cap part 16 of the flanged light bulb 14.
5 is fitted onto the outside, and the rear surface of the flange body 21 of the flanged light bulb 14 is formed on the front surface of the presser edge 7 of the retaining ring 5.
so that it touches the

At the same time, the retaining ring 5 is fitted onto the mounting tube 2, and the engaging protrusion 4.4.4 formed on the attaching tube 2 passes through the gap 9.9.9 formed on the retaining ring to the engaging edge. 8.8.Go slightly rearward than the rear tip of 8.

Then, move the retaining ring 5 clockwise to the bulge 6.6.6.
is rotated until the counterclockwise end surface of the engaging protrusion 4.4.4 comes into contact with the counterclockwise end surface of the engaging protrusion 4.4.4. This causes the engagement edge 8.8.8 to engage the front face of the engagement ridge 4.4.4. At this time, the protrusion 10.10 formed on the engagement edge 8.8.8
．． 10 is formed only on the inner edge of the rear surface of the engagement edge 8.8.8, so that it springs into contact with the base of the engagement protrusion 4.4.4.

In this way, the retaining ring 5 is attached to the mounting tube 2, and the flange body 21 of the flanged light bulb 14 is connected to the receiving portion 2e of the attaching tube 2 by the retainer I! i
It is held between the front surface of the presser foot record 7 of t5, and the presser protrusion 13.13.13 of the retaining ring 5 presses the rear surface of the flanged body 21 of the flanged light bulb 14, thereby stabilizing the attachment state of the flanged light bulb 14. It looks like this.

In addition, the end stop protrusion 12 engages with the - of the retaining notch 22, 22, 22 formed in the collar body 21 of the light bulb, thereby locking the retaining ring 5 in a predetermined position. The retaining ring 5 will not fall off from the mounting tube 2.

When removing the flanged light bulb 14 from the reflector 1, hold J]
5 in the counterclockwise direction to disengage the engagement edge 8.8.8 and the engagement protrusion 4.4.4, and then pull out the flanged light bulb 14 from the mounting tube 2.

At this time, in the initial stage, the end stop protrusion 12 and the support notch 22
It is necessary to apply some force to release the engagement with the
No particular strong force is required after the engagement is released.

(G. Effect of the invention) As is clear from the above description, the mounting device for the flanged light bulb of the present invention forms a mounting tube in the envelope that houses the light emitting part of the flanged light bulb inside, A receiving portion for receiving the flanged body of the flanged light bulb is formed in the tube, and a plurality of engaging protrusions extending in the circumferential direction are formed on the outer peripheral surface of the mounting tube to hold the flanged light bulb in cooperation with the mounting tube. The retaining ring has a substantially cylindrical shape with a short axial length, and the retaining ring has a presser edge projecting inward, and the front surface of the presser edge has at least an end. A stop protrusion is formed, and a plurality of engaging edges projecting inward and extending in the circumferential direction are formed at the front end of the retaining ring, and the end stop protrusion of the retaining ring engages with the flange body of the flanged light bulb. A retaining notch is formed to fit the retaining ring, and the retaining ring is attached to the attaching tube by fitting the retaining ring onto the attaching tube and engaging an engaging edge of the retaining ring with an engaging protrusion of the attaching tube. , the flange body of the flange light bulb is sandwiched between the two, and the flange bulb is attached to the envelope, and the end projection of the retaining ring and the holding notch of the flange body of the flange bulb engage with each other. It is characterized by the following.

Therefore, in the mounting device for a flanged light bulb of the present invention, there is no part of the mounting tube that is particularly thin, and the envelope can be
Even when it is formed of RP, the strength of the mounting tube does not particularly decrease. Further, the mounting tube has a substantially uniform wall thickness except for the engaging protrusion, and in this respect also has the advantage that the mechanical strength of the mounting tube is higher than that of the conventional one.

Moreover, since the mounting tube in the mounting device for a flanged light bulb of the present invention can be formed by cutting, manufacturing costs can be reduced.

Furthermore, the engagement between the rotation prevention protrusion of the retaining ring and the rotation prevention notch of the flanged body of the flanged light bulb prevents the retention ring from loosening or coming off easily.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the mounting device for a flanged light bulb according to the present invention, in which Fig. 1 is an exploded perspective view, Fig. 2 is a perspective view, and Fig. 3 is an enlarged cross section taken along line III-III in Fig. 2. Figure 4 is a rear view of the mounting tube, Figure 5 is a rear view of the retaining ring, Figure 6 is a front view of the retaining ring, Figure 7 is a sectional view taken along the line ■-■ in Figure 5, and Figure 4 is a rear view of the mounting tube. Figure 8 shows the longitudinal cross-sectional shape of the rotation stopper; (a)
is an optimal shape, (b) and (C) are longitudinal cross-sectional views showing inappropriate shapes, FIG. 9 is a plan view of the flanged light bulb, and FIG. 10 is a front view of the flanged light bulb. Explanation of symbols 1... Envelope, 2... Mounting tube, 2e... Receiving portion, 4... Engaging protrusion, 5... Retaining ring, 7...
Presser edge, 8... Engagement edge, 12... Rotation stop projection, 1
4... Flammed light bulb, 15... Light emitting part, 21...
Tsuba body, 22... Rotating notch - ~ Mountain-sized mushroom ヱ ρ & reference HwL diagram Fig. 2 v-l = v-CXJ heg [F] Figure 5 Rear view of ``Dammochi!'' Figure 5 I Front view of Hoetrei Figure 6 Cross-sectional view (VII-■Rehearsal) Figure 7 (G) (b) (C) Turning, stopping B/) Cutter shape 吃Fig. 8 is a vertical cross-sectional view.

Claims (1)

[Claims] (1) A mounting tube is formed in the envelope that accommodates the light emitting part of the flanged light bulb inside, a receiving part for receiving the flanged body of the flanged light bulb is formed in the mounting tube, and a circumferential direction is formed on the outer peripheral surface of the mounting tube. a retaining ring is provided which cooperates with the mounting tube to hold the flanged light bulb; the retaining ring has a substantially cylindrical shape with a short axial length; The ring is formed with a presser edge that protrudes inward, and at least a rotation stopper is formed on the front surface of the presser edge, and the front end of the retainer ring has a plurality of inwardly projecting protrusions extending in the circumferential direction. An engaging edge is formed, and a rotation preventing notch is formed in the flange body of the flanged light bulb, with which the rotation preventing protrusion of the retaining ring engages, and the retaining ring is externally fitted onto the mounting tube, and the retaining ring is engaged with the retaining ring. The retaining ring is attached to the mounting tube by engaging the mating edge with the engagement protrusion of the mounting tube, and the flange body of the flanged light bulb is held between the two to attach the flanged light bulb to the envelope. A mounting device for a flanged light bulb, characterized in that the rotation prevention protrusion of the retaining ring and the rotation prevention notch of the flanged body of the flanged light bulb engage with each other when the flanged light bulb is mounted.