JPH03282402A - Light source unit - Google Patents

Abstract

PURPOSE:To facilitate the manufacture and to secure the mechanical strength of an engagement part by constituting the center part of a ceramic-made mirror and an engagement part for other devices in integrated structure as to the combination of a lamp and the ceramic-made mirror. CONSTITUTION:A lamp grip part 20, the mirror part 2, and the engagement part for other devices are constituted in one body. The base part of the lamp 1 is fixed to the lamp grip part 20. Therefore, the center part of the mirror 2 and the engagement part for other devices are manufactured in integrated structure by press formation and sintering, the engagement part has sufficient mechanical strength, and machining is carried out up to detailed points. Consequently, the light source unit has resistance to high temperature and electric insulating performance and is hard to break and easily machined into the special shape.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a light source device that uses a lamp and a ceramic mirror in combination.

[Prior Art] A light source device in which a mirror is combined as a member for reflecting light from a lamp serving as a light source is generally used. Mirrors that can be combined with this lamp include (a) metal, (b) glass, (C) plastic, and (d) paper, and as a special example, (e ) It is known whether it is made of ceramics.

As a mirror made of ceramics, U.S. Patent No. 4,59
No. 9.540, and as is clear from the description thereof, this invention uses ceramics for the lamp envelope, and the inner surface of the ceramics is made to have a mirror surface.

[Invention or problem to be solved Section B] As mentioned above, the mirror incorporated in the conventional light source device includes:
There are various types, each with their own advantages and disadvantages, and
It is not integrated with the lamp handle, and the mirror itself has the following problems.

(a) Metal mirrors can withstand high temperatures and are relatively easy to manufacture by cutting, or metal mirrors are not insulators, so they may be unsuitable when used with electrical components. .

Also, (b) glass mirrors can withstand high temperatures;
It has the advantage of being easily manufactured with a mold and being electrically insulating, but it is easily damaged because it is made of glass, and
There are restrictions on the shape when molding, and only simple shapes can be made.

It is difficult to find a mirror with locking parts such as irregularities necessary for installing it on a light fixture.

Furthermore, regarding mirrors made of (c) plastic and (d) paper, the strobe gun in the photo used at low temperatures is made of plastic, and the mirrors of toys such as miniature fluorescent lamps are made of paper. It's okay to have them, but since they cannot withstand high temperatures, they cannot be used as light sources that easily reach high temperatures.

Furthermore, as conventional light source devices for projecting light, light source devices using glass mirrors have been used, and when replacing lamps, a mirror holder that fits into the device is required, and the structure is The problem is that it becomes more complex.

The present invention was made to solve such problems,
To provide a light source device that can withstand high temperatures, has electrical insulation, is hard to break, is easy to process into a special shape, and has a mirror and a lamp handle integrally formed.

[Means for Solving the Problem] In order to achieve the above object, the light source device of the present invention has the following features:
In claim (1), the base of the lamp is fixed to the lamp handle of a ceramic mirror made by integrally molding the lamp handle, the mirror, and the engagement part for another device. In claim (2), the lamp handle is covered with a cap made of ceramics, and the base of the lamp is fixed to the cap and to the cap or the lamp handle, respectively, with an adhesive. It has a structure.

[Operation] By having the structure of claim (1) above, it is possible to manufacture the central part of the mirror and the engaging part for another device as an integral structure by press molding and firing. hand,
The engaging portion has sufficient mechanical strength and can be cut to a fine point, making it convenient for use as a lamp handle.

Further, according to claim (2), the lamp handle portion and the cover are constructed in a simple and stable manner.

[Example] Fig. 1 is a diagram schematically showing a light source device equipped with a mirror and a lamp according to the present invention, and Fig. 1A is a side sectional view, and Fig. 1B is a side sectional view.
is a plan view of the rear opening in the same figure (a), and the same figure (C)
2(a) is a perspective view showing the entire front opening in FIG. 1, and FIG. 2(b) and FIG. FIG.
FIG. 3 is a perspective view for explaining the assembly procedure of the light source device shown in FIG.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

In Figures 1 to 3, 1 is an alternating current lighting double-terminal sealed metal halide lamp (hereinafter referred to as a lamp) 1, which is lit at a rated output of 50 V, 400 W, and a frequency of 270 Hz;
The outer diameter of the base of this lamp 1 is 81 m, and the length of the base is 26 cm.
It is l. 2 is a ceramic mirror made of alumina, and the lamp handle part 20. Central part 21. It consists of a front opening 22, and a /1 reflective film 2a is deposited on the inner surface of the mirror.

The base of the lamp is a general term for the stem/seal part of the lamp, or if a cap or base is attached, the cap, base, and other parts of the lamp that are used as handles other than the light emitting part.

The lamp handle part 20 has an outer diameter of 2011 mm, an inner diameter of 12 cm, and a center part 21 with a thickness of 5 l, and the inner surface of the center part 21 is x2/412+Y2/252=
The front opening 22 has an outer diameter of 62 am and an inner diameter of 49 wm. Further, the inner surface of the central portion 21 may be a paraboloid.

The cap 3 is integrally integrated from the center of the mirror 2 and is engaged with the rear opening 201 of the lamp handle 20. This engagement occurs between the rear step surface 30 and the first step portion 31 provided on the cap 3.
and the second stepped portion 32, respectively, are located in the rear opening 2019 of the lamp handle portion 20, the stepped portion 31' and the notch portion 32', and are filled and fixed with an adhesive (for example, Sumiceram, trade name).

Further, the lamp handle portion 20 has a cutout portion 32' along the longitudinal direction, as shown in FIG. 2nd of cap 3
The step 32 engages with this notch 32', or because the notch 32' is longer, a ventilation opening 7 is formed. The second step portion 32 has an inclination to improve ventilation to the central portion of the mirror. The size of the ventilation opening 7 is α in FIG. 1(b).
= 90', 125 m in the longitudinal direction of the lamp base, and the rear end surface 30 of the cap 3 for cooling the foil of the lamp base has an opening 33 for the current-carrying wire of one terminal of the lamp 1. Further, the lead wire at the other end of the lamp l is connected to the lead wire 37 via a mounting shaft (path shown) and a lamp holder 100 that can be energized. These connections are bonded by spot welding or the like through two-layer foils 38 and 39, and connected to the socket 40.

Next, the front opening of the mirror 2 has a groove 11 and a front opening surface 12.
It is formed in a step-like manner as shown in FIG. This groove 1
1 is provided at two locations at β = 90°, and the depth of the step is 7.
1 (FIG. 1(C)), this groove 11 is for ventilation of cooling air, and for this purpose, it enables cooling of the lamp base and forms a ventilation passage continuous with the ventilation opening 7. .

Furthermore, a notch groove 19 is provided in the groove 11 of the front opening 22, and a lamp holder 100 is attached thereto. As shown in FIG. 3, the front opening surface 12 is provided with a position adjustment engagement mechanism 17 and a position adjustment groove 18, which serve as an engagement mechanism for attaching this light source device to another device. ing.

That is, by fitting a protrusion (not shown) of another device into the groove 18, the position for attachment can be adjusted very easily.

In the light source device as described above, when the lamp 1 is turned on, the mirror 2 functions as a condensing mirror and emits light from the front opening 22.

According to the light source device using a ceramic mirror according to the present invention, since the mirror, the lamp handle, etc. are integrally molded, there is no need to provide a mirror handle, and the structure is extremely simple. Therefore, it is suitable for a light source device for projecting light.

It should be noted that the dimensions shown in the examples are examples and are not limited to these.

[Effects of the Invention] As explained above, the light source device of the present invention is easy to manufacture and easy to engage because the central part of the mirror and the engaging part for other devices are configured as an integral structure. The mechanical strength of the joint is sufficient, and it is easy to press-form, bake, and cut. It is also possible to process detailed shapes that cannot be made with glass, and it can also be used to form lamp handles. Since it is easy to use, it is also suitable as a light source device for projecting light.

[Brief explanation of drawings]

FIG. 1 schematically shows a light source device equipped with a mirror and a lamp according to the present invention, FIG. 1(a) is a side sectional view, and FIG. 1(b)
is a plan view of the rear opening in the same figure (a), and the same figure (C)
2 is a plan view of the front opening shown in FIG. 2A, and FIG. 2 is a perspective view showing the entirety of FIG. 3 is a perspective view for explaining the assembly procedure of the light source device of FIG. 2. FIG. In the figure, 1: lamp 2 mirror 2a: inner surface of mirror 3: cap 7, ventilation opening 11, ventilation groove 20/lamp handle 22, front opening 31.32: step 201: rear opening

Claims (2)

[Claims] (1) Made of ceramic made by integrally molding a lamp handle portion with a ventilation opening, a mirror portion with a mirror surface formed on the inner surface, and an engagement portion for other devices having a stepped portion for ventilation openings. A light source device characterized in that the base of the lamp is fixed to the lamp handle of the mirror. (2) Claim (1) characterized in that the lamp handle is covered with an inclined ceramic cap, and the base of the lamp is fixed to the cap and the cap is fixed to the lamp handle with an adhesive. The light source device described in .