JP3269255B2 - Tube with reflector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulb with a reflecting mirror, such as a halogen bulb with a dichroic mirror.

[0002]

2. Description of the Related Art In recent years, an increasing number of lamps with a reflecting mirror, such as a halogen bulb with a dichroic mirror, having a front glass attached to a reflecting mirror for the purpose of safety and prevention of ultraviolet rays.

Conventionally, as a means for attaching a front glass to an opening of a reflecting mirror such as a dichroic mirror, an adhesive such as a silicon-based adhesive has been used.

[0004]

However, since such a conventional bulb with a reflecting mirror has a substantially hermetically sealed structure, the internal temperature rise is remarkable as compared with the case where no front glass is provided, so that the adhesion of the bulb is considerably reduced. The temperature of the part may be as high as 250 ° C. Conventional adhesives do not have sufficient heat resistance and ultraviolet resistance, and therefore, particularly in the case of a type having a large electric power, there has been a problem that the adhesive deteriorates due to temperature or ultraviolet rays and the front glass comes off.

The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a reflector-equipped bulb in which a front glass does not come off due to a change with time such as deterioration.

[0006]

According to the present invention, there is provided a bulb with a reflector, a reflector having a light source inside, a front glass provided at an opening of the reflector, a ring shape, and a rim. Sandwich
Holding part, elastic part curved inside the rim holding part, this
A front glass holding member made of a metal in which a front glass holding portion is continuously provided inside the elastic portion, and a rim portion is provided outside the opening of the reflecting mirror along the opening. The rim is held between the rim holding portions , and the front
The front glass is fixed to the opening by pressing the front glass with a lath pressing portion . Ma
In addition, the bulb with a reflecting mirror of the present invention has a light source provided inside.
A mirror, a front glass provided at an opening of the reflector, and a mirror.
Rim holding portion, and the rim holding portion
Bend on the side, the inner rim inside this bend is the outer rim
Inclined so that it is higher toward the reflector than the section
Before the front glass holder is made of metal
Surface glass holder, and outside the opening of the reflecting mirror
A rim is provided along the opening, and the rim is provided.
Between the rim holding part and the front glass holding part.
By pressing down on the front glass,
It has a configuration in which the front glass is fixed.

[0007]

With this configuration, since no adhesive is used, it is possible to prevent the front glass from coming off due to deterioration of the adhesive or the like. Further, the front glass can be firmly fixed to the reflecting mirror.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1 and FIG.
The halogen bulb with a dichroic mirror of the embodiment of
A dichroic mirror 1 (hereinafter, referred to as a reflecting mirror 1) having a reflecting portion 1a having an opening and a tubular portion 1b connected to the reflecting portion 1a and having a multilayer interference film adhered to the reflecting portion 1a is provided. ing. A notched front glass mounting portion 2 is formed at the inner end of the opening of the reflecting portion 1a, and a rim portion 3 that protrudes outward over the entire circumference is formed at the outer end of the opening. The sealing portion 4a of the halogen bulb 4 as a light source is inserted into the tubular portion 1b,
Is fixed. The front glass mounting portion 2 is provided with a front glass 7. The front glass holder 6 has a ring shape and includes a rim holding portion 6a, a curved portion 6b which is an elastic portion inside the rim holding portion 6a, and a front glass pressing portion 6c inside the curved portion 6b. It is installed continuously,
The rim portion 3 of the reflecting mirror 1 is held by the rim holding portion 6a, and the front glass 7 is pressed by the front glass pressing portion 6c. The entire periphery of the rim portion 3 of the reflecting mirror 1 is held by the rim holding portion 6a of the front glass holding body 6, whereby the front glass 7 is fixed to the opening of the reflecting mirror 1. At this time, since the front glass pressing portion 6c presses the front glass 7 against the reflecting mirror 1 by the elastic force of the curved portion 6b, the front glass 7 is firmly pressed and fixed to the reflecting mirror 1. here,
The fixing of the reflection mirror 1 and the front glass 7 by the front glass holder 6 is performed as follows. That is, as shown in FIG. 3, the front glass 7 is placed on the front glass mounting portion 2 of the reflecting mirror 1, and
The front glass holder 6 made of aluminum is placed thereon. Thereafter, the front glass holding member 6 is placed on the jig 8 with the lower side facing down. The entirety including the jig 8 and the reflecting mirror 1 is rotated while lowering the reflecting mirror presser 9 from above the jig 8 and strongly pressing the whole downward. As shown in FIG.
The roller 10 is pressed laterally against the rim holding portion 6a of the rotating front glass holding member 6, and the front glass holding member 6 is pressed.
The rim holding portion 6a of FIG.
As shown in (1), the rim 3 of the reflecting mirror 1 is held by the rim holding portion 6a of the front glass holder 6. In this way, a halogen lamp with a dichroic mirror in which the front glass 7 is firmly pressed and fixed can be obtained.

As described above, the halogen lamp with a dichroic mirror according to the first embodiment of the present invention holds the rim 3 of the reflecting mirror 1 and the front glass 7 provided on the front glass mounting portion 2 of the reflecting mirror 1 on the rim. The front glass 7 can be firmly pressed and fixed to the reflecting mirror 1 by being sandwiched by the front glass holding member 6 including the portion 6a, the curved portion 6b, and the front glass pressing portion 6c. Glass 7
The front glass 7 can be firmly fixed to the opening of the reflecting mirror 1 without using an adhesive for fixing the glass.

Next, a second embodiment of the present invention will be described with reference to the drawings. As shown in FIG.
The halogen bulb with a dichroic mirror of the embodiment of
It has a lamp configuration similar to that of the first embodiment. As shown in FIG. 6, the front glass holding body 11 has a ring shape, and has a rim holding portion 11a, a bent portion 11b inside the rim holding portion, and a front glass holding portion 11c inside the bent portion 11b. And the reflecting mirror 1 is provided at the rim holding portion 11a.
Of the front glass 7 is held by the front glass holding portion 11c. Therefore, the front glass 7 is fixed to the opening of the reflecting mirror 1 by the front glass holder 11.

Here, the inner peripheral portion 11d of the front glass pressing portion 11c is connected to the outer peripheral portion 11d of the front glass pressing portion 11c.
It is configured so as to be inclined toward the reflecting mirror by 0.2 to 0.5 mm higher than e. Therefore, when the reflecting mirror 1 and the front glass 7 are attached with the front glass holding body 11, Since the front glass pressing portion 11c presses the front glass 7 against the reflecting mirror 1 by the elastic force generated by the inclination, the front glass 7 is firmly pressed and fixed to the opening of the reflecting mirror 1.

The fixing of the reflecting mirror 1 and the front glass 7 by the front glass holding member 11 is performed in the same manner as in the first embodiment. That is, the front glass 7 is placed on the front glass holding portion 11c of the front glass holding member 11 in the same manner as shown in FIG.
Is placed downward. After this, the front glass holder 11
Is placed on the jig 8 with the side facing down. At this time, as shown in FIG. 7, the rim holding portion 11a of the front glass holding member 11 and the end face of the opening of the reflecting mirror are provided apart from each other. The reflecting mirror presser 9 is lowered from above the jig 8, and is pressed down with a strong force so that the rim holding portion 11 a of the front glass holding member 11 and the end face of the opening of the reflecting mirror 1 come into contact with each other. The whole including the tool 8 and the reflecting mirror 1 is rotated. 4, the roller 10 is pressed laterally against the rotating rim holding portion 11a of the front glass holding body 11, and the rim holding portion 11a of the front glass holding body 11 is Then, as shown in FIG. 6, the rim portion 3 of the reflecting mirror 1 is held by the rim holding portion 11a of the front glass holder 11, as shown in FIG. In this way, it is possible to obtain a halogen lamp with a dichroic mirror in which the front glass 7 is firmly pressed and fixed to the reflecting mirror 1.

Since the rim holding portion 11a is inclined, when the front glass holding member 11 is held by the rim portion 3, the outer peripheral edge 11e of the rim holding portion 11a applies pressure to the outer peripheral portion of the front glass 7. Since it is not added, the outer peripheral portion of the front glass 7 can be prevented from breaking. The bent portion 11b of the front glass holding member 11 and the front glass 7
When the front glass 7 and the front glass holder 11 are placed on the front glass holder 11, the gap between the front glass holder 11 and the rim holding portion 11 a of the front glass The front glass 7 can be easily attached using the front glass holding member 11 by providing such an amount that rattling does not occur.

As described above, the halogen lamp with a dichroic mirror according to the second embodiment of the present invention holds the rim 3 of the reflecting mirror 1 and the front glass 7 provided on the front glass mounting portion 2 of the reflecting mirror 1 on the rim. By being sandwiched by the front glass holding body 11 composed of the portion 11a, the bent portion 11b, and the front glass pressing portion 11c, as in the first embodiment,
Since the front glass 7 can be firmly fixed to the reflecting mirror 1 by pressure, the front glass is firmly fixed to the opening of the reflecting mirror 1 without using an adhesive for fixing the reflecting mirror 1 and the front glass 7. can do.

In each of the embodiments, a halogen light bulb is used as a light source, but a metal halide lamp or the like may be used.

[0017]

As described above, since the bulb with the reflecting mirror of the present invention does not use an adhesive, it is possible to prevent the front glass from coming off due to the deterioration of the adhesive. Further, the front glass can be firmly fixed to the reflecting mirror, and the mounting state of the front glass can be made extremely excellent.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a halogen bulb with a dichroic mirror according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the same.

FIG. 3 is a view for explaining a method of attaching a front glass holder in the halogen bulb.

FIG. 4 is an enlarged sectional view of a main part of the same.

FIG. 5 is a partially cutaway front view of a halogen lamp with a dichroic mirror according to a second embodiment of the present invention.

FIG. 6 is an enlarged sectional view of a main part of the same.

FIG. 7 is an enlarged sectional view of a main part showing a state before mounting the front glass holder in the halogen lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reflecting mirror 2 Front glass attachment part 3 Rim part 4 Halogen bulb 6, 11 Front glass holder 6a, 11a Rim holding part 6b Curved part 6c, 11c Front glass holding part 7 Front glass 11b Bent part

Claims (3)

(57) [Claims] 1. A reflecting mirror provided with a light source inside, a front glass provided at an opening of the reflecting mirror, and a ring shape.
And a rim holding portion, a bullet curved inside the rim holding portion
The front glass holding part inside the elastic part and this elastic part
A front glass holding body made of a continuous metal, and a rim portion is provided along the opening outside the opening of the reflecting mirror, and the rim is sandwiched by the rim holding portion ,
A tube with a reflecting mirror, wherein the front glass is fixed to the opening by pressing the front glass with the front glass pressing portion . 2. A reflecting mirror provided with a light source inside thereof,
With a front glass provided in the opening of the mirror and a ring shape,
And a rim holding portion, a bent portion inside the rim holding portion,
The inner edge inside the bend is more reflective than the outer edge
Front glass holder inclined so that it rises toward the mirror
And a front glass holder made of metal
And outside the opening of the reflector along the opening.
A rim portion, and the rim portion is held by the rim.
Part, and the front glass is held by the front glass holding part.
By pressing down, the front glass is fixed to the opening.
A tube with a reflecting mirror, characterized in that: Wherein said and said rim portion is provided over the entire periphery of the opening of the reflector, before the entire circumference of the rim portion
Claim, characterized in that the clamped serial rim holding portion 1 also
Is a tube with a reflecting mirror according to claim 2 .