JP3210545B2 - Floodlight - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a floodlight lamp. More specifically, the present invention relates to a floodlight formed by forming a reflective film on the inner surface of a glass reflector, and to provide a novel floodlight capable of improving the weldability between the reflector and the front lens.

[0002]

2. Description of the Related Art In a floodlight lamp having a reflective film formed on a glass reflector base material, for example, a shield beam lamp used as a light source of an operating lamp, a multilayer in which infrared rays are not projected to a reflector thereof. The reflection film is formed, for example, by vapor deposition.

FIG. 6 shows a conventional shield beam lamp a. The shield beam lamp a includes a reflector b made of hard glass, a front lens c attached so as to cover a front opening of the reflector b, and a reflector a. And a valve e and the like disposed in a closed space d defined by the front lens c.

In a state where the front lens c and the bulb e are not attached, that is, in a single reflector b,
An abutting surface f facing forward is formed at the opening edge, and an annular ridge g extending in the circumferential direction is integrally provided with the reflector b at an inner portion of the abutting surface f. The stripe g has a surface that is continuous with the inner surface of the reflector b (see FIG. 7).

The front lens c before being attached to the reflector b has an abutted surface h facing rearward on the outer peripheral portion thereof, and the ridge g of the abutted surface h. An annular groove i is formed in a portion opposed to the groove so that the protrusion g is fitted almost exactly (see FIG. 7).

When the front lens c is positioned so as to cover the front surface of the reflector b, the ridge g of the reflector b is fitted into the concave line i of the front lens c and the reflector b
And the abutting surface f of the reflector b and the abutted surface h of the front lens c are brought into contact with each other.

In order to prevent the infrared rays from being projected, a multilayer reflective film (infrared ray transmitting film) j for transmitting the infrared rays is formed on the inner surface of the reflector b, whereby the infrared rays are transmitted to the rear of the reflector b. , Light not containing infrared rays is reflected forward by the multilayer reflective film j, and is projected forward through the front lens c.

The multilayer reflective film j is formed by alternately laminating high-refractive index layers and low-refractive index layers. For example, a germanium (Ge) layer,
Magnesium fluoride (MgF2) layer, zinc sulfide (Zn)
There is a five-layer structure of an S) layer, a magnesium fluoride (MgF2) layer, and a zinc sulfide (ZnS) layer.

In order to manufacture such a shield beam lamp a, first, a multilayer reflective film j is formed in a state where the front lens c and the bulb e are not attached, that is, on a single reflector b. Such film formation is, for example, a vacuum deposition method,
This is performed by an immersion method, an ion plating method, a sputtering method, or the like.

At this time, in order to prevent the multilayer reflective film j from being formed on the abutting surface f and the ridge g of the front opening edge of the reflector b, a ring-shaped jig k covering the abutting surface f and the ridge g is used. Is used.

The ring-shaped jig k has an outer diameter substantially the same as the outer diameter of the abutting surface f of the reflector b, and the shape of the rear surface side is formed substantially the same as the rear surface of the outer peripheral portion of the front lens c. ing. That is, on the rear surface of the ring-shaped jig k, a concave ridge l in which the above-mentioned ridge g is fitted almost exactly in the center in the width direction is formed so as to extend in an annular shape, and the outer peripheral side of the concave ridge l Is formed on the contact surface m of the reflector b, which comes into contact with the abutting surface f, and the portion on the inner peripheral side of the concave strip l is formed on the smooth surface n slightly deviated rearward from the contact surface m (FIG. 8).

When the multilayer reflective film j is formed on the inner surface of the reflector b, the ring-shaped jig k is mounted on the outer peripheral portion of the reflector b so that the contact surface m is the abutting surface f of the reflector b.
, And the recesses l are arranged in a state of being fitted to the protrusions g of the reflector b (see FIG. 9).

Thus, when the multilayer reflective film j is formed on the inner surface of the reflector b, the abutting surface f, the ridge g, and the inner surface of the reflector b near the opening edge (hereinafter, referred to as the “b”).
It is called "opening inclined surface." A) A multilayer reflective film j is formed on the inner surface excluding o.

Next, after the bulb e is disposed at a predetermined position of the reflector b on which the multilayer reflective film j is formed, the opening surface of the reflector b is covered with a front lens c, that is, the reflector b
The butted surface h of the front lens c is butted against the butted surface f of the front lens c, and the ridge g of the reflector b is fitted into the concave ridge i of the front lens c. In this state, the outer peripheral portions of the reflector b and the front lens c are separated. By welding, a shield beam lamp a is formed (see FIG. 6).

At this time, the contact portion between the abutting surface f of the reflector b and the abutted surface h of the front lens c and the contact portion between the ridge g of the reflector b and the concave ridge i of the front lens c are melted, respectively. And the opening inclined surface o of the reflector b is also welded and connected to a part of the concave lens i of the front lens c (see FIG. 7).

[0016]

However, in the above-mentioned conventional shield beam lamp a in which a reflection film is formed on a glass reflector substrate, a ring-shaped jig k of a reflector b is used.
Of the multi-layer reflective film j which is also finely divided between the substrate and the inclined opening o of the reflector b, magnesium fluoride (MgF 2)
Alternatively, there is a problem that zinc sulfide (ZnS) enters and a multilayer reflective film j is formed.

That is, the dimensions (outside diameter,
Even if the inner diameter, ridge size, etc.) are manufactured with high accuracy,
When the ring-shaped jig k is in contact with the reflector b, it is impossible to make a state where there is no gap between the opening inclined surface o of the reflector b and the inner surface inside the concave strip l of the ring-shaped jig k. As close as possible, the multilayer reflective film j
Component enters the reflector b as described above.
Is formed on the inclined surface o of the opening (see FIG. 9).

Moreover, in reality, the dimensions (outer diameter, inner diameter, size of the ridges, etc.) of each part of the reflector b must be allowed to vary to some extent. To form a multilayer reflective film j.

Then, with the multilayer reflective film j formed on the inclined surface o of the opening of the reflector b, the front lens c
Is welded so as to cover the front opening of the reflector b, the component of the multilayer reflective film j is interposed in the welded portion of both,
There is a problem that the weldability of the two becomes poor.

Such a problem is not limited to the case where a multilayer reflective film is formed on a glass reflector substrate, but also occurs when a reflective surface which reflects all wavelengths, for example, aluminum is formed. It is.

[0021]

According to the present invention, there is provided a floodlight having a glass reflector and a glass lens for covering a front opening of the reflector. In a floodlight having a reflective film formed thereon, an annular step having a surface directed substantially forward is formed integrally at a position slightly inside the opening edge of the reflector.

[0022]

Therefore, in the floodlight of the present invention, an annular step having a surface facing substantially forward is formed integrally with the inclined surface of the opening of the reflector, so that a ring is formed on the surface facing forward of the step. The shape jig can be abutted, so that even if a slight error occurs in the dimensions of each part of the reflector and a gap is formed between the opening inclined surface of the reflector and the ring-shaped jig,
At the time of film formation, the components of the reflective film are not formed on the inclined surface of the opening, and therefore, the components of the reflective film do not intervene in the portion where the reflector and the front lens are to be welded.
There is no possibility that the weldability when the two are combined is deteriorated.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the floodlight according to the present invention will be described below with reference to the illustrated embodiments.

The floodlight lamp 1 in the first embodiment is one in which the present invention is applied to a shield beam lamp used as a light source of a surgical lamp.

Reference numeral 2 denotes a hard glass reflector having a substantially paraboloidal inner surface 2a, on which a multilayer reflective film 3 for reflecting light of a specific color is formed. still,
Since the illustrated embodiment 1 is used as a light source of an operating lamp, the multilayer reflective film 3 transmits infrared rays and reflects other rays so as not to project heat rays, that is, infrared rays. I have. The multilayer reflective film 3 has the same layer configuration as that of the conventional example, but is not limited to this, and may be any multilayer reflective film that transmits infrared rays.

Reference numeral 4 denotes a hard glass lens whose peripheral portion is overlapped with the peripheral edge of the opening of the reflector 2, and in this state, both are welded to form a closed space 5.

Reference numerals 6, 6, and 6 denote ferrule holes formed at the top of the reflector 2, and ferrules 7, 7, 7 having an arm shape on the rear surface of the top of the reflector 2 so as to cover the ferrule hole. Is sealed in a buried state.

Reference numerals 8, 8, and 8 denote lead supports, the rear ends of which are inserted through the ferrule holes 6, 6, and brazed to the inner surfaces of the ferrules 7, 7, 7, respectively.

Reference numeral 9 denotes a valve, and its lead wires 10, 1
Are soldered to appropriate ones of the lead supports 8, 8, 8 (see FIG. 1).

A single reflector 2, that is, the lens 4
And reflector 2 in a state where valve 9 and the like are not attached
In this embodiment, an abutting surface 11 facing forward is formed at the opening edge, and an inner portion of the abutting surface 11 has a surface continuous with the inner surface 2a of the reflector 2 and has an annular shape extending in the circumferential direction. A ridge 12 is provided integrally with the reflector 2.

On the inner surface 2a of the reflector 2, a triangular ridge 13 having a substantially triangular cross-sectional shape is formed at a portion slightly inward from the opening edge thereof. It has a smooth front surface 13a facing forward and extends in the circumferential direction of the reflector 2 and is formed integrally therewith (see FIG. 2).

The lens 4 in a state before being attached to the reflector 2 has an abutted surface 1 facing rearward on its outer peripheral portion.
4 is formed, and an annularly extending recess 15 is formed in a portion of the abutted surface 14 opposed to the ridge 12 so as to fit the ridge 12 almost exactly.

When the lens 4 is positioned so as to cover the front surface of the reflector 2, the projection 12 of the reflector 2
Are fitted into the concave stripes 15 of the lens 4 to perform positioning with respect to the reflector 2. The triangular ridge 13 is formed so that the front surface 13a does not contact the inner side surface 4a of the lens 4 in this state (see FIG. 2).

In order to form the multilayer reflective film 3 on the reflector 2, a ring-shaped jig k is used in the same manner as described in the conventional example, and the butting surface 11 and the ridge 12 of the reflector 2 are formed by the ring-shaped jig k. Is formed in a state of covering (see FIG. 3).

That is, the ring-shaped jig k is moved to its contact surface m.
Are in contact with the butting surface 11 of the reflector 2 and the projections 12 of the reflector 2 are fitted in the recesses 1 thereof. At this time, the smooth surface n inside the ring-shaped jig k comes into contact with the front surface 13a of the triangular ridge 13 of the reflector 2 (see FIG. 4).

Thus, when the multilayer reflective film 3 is formed on the inner surface 2a of the reflector 2, the portion of the reflector 2 near the opening edge of the butting surface 11, the ridge 12 and the inner surface 2a (from the triangular ridge 13). The inner surface 2 excluding a portion (hereinafter referred to as “opening inclined surface”) 16 up to the opening edge of the reflector 2
The multilayer reflective film 3 is formed on a.

That is, since the butting surface 11 and the ridge 12 of the reflector 2 are in contact with the contact surface m or the concave ridge l of the ring-shaped jig k, the components of the multilayer reflective film 3 do not adhere. In addition, the inclined surface 16 of the opening of the reflector 2 does not allow the components of the multilayer reflective film 3 to wrap around to this extent due to the contact between the smooth surface n of the ring-shaped jig k and the front surface 13a of the triangular ridge 13. 2, these butting surfaces 11,
The multilayer reflective film 3 is not formed on the ridge 12 and the opening inclined surface 16.

Next, after the bulb 9 is disposed at a predetermined position of the reflector 2 on which the multilayer reflective film 3 is formed, the opening surface of the reflector 2 is covered with the lens 4, that is, the lens 2 is placed on the abutting surface 11 of the reflector 2. 4 butted surfaces 14 are butted,
The projections 12 of the reflector 2 are fitted into the recesses 15 of the lens 4, and in this state, the outer peripheral portions of the reflector 2 and the lens 4 are welded to form the floodlight lamp 1.

At this time, the contact portion between the abutting surface 11 of the reflector 2 and the abutted surface 14 of the lens 4 and the contact portion between the protruding ridge 12 of the reflector 2 and the concave ridge 15 of the lens 4 are respectively melted and combined. Further, the opening inclined surface 16 of the reflector 2 is also welded and joined to a part of the concave portion 15 of the lens 4.

Since the multilayer reflecting film 3 is not formed on the butting surface 11, the ridge 12 and the opening inclined surface 16 of the reflector 2 as described above, these portions 11, 12, 1
The welding at the connection between the lens 6 and the parts 14 and 15 of the lens 4 can be strengthened.

The dimensions of each part of the reflector 2 (outer diameter,
Even if there is some variation in the inner diameter and the size of the ridge, the smooth surface n of the ring-shaped jig k and the front surface 13a of the triangular ridge 13 are in contact with each other. The components of the multilayer reflective film 3 do not flow to the inclined surface 16, and therefore, the multilayer reflective film 3 is not formed on the opening inclined surface 16.

In the above-described embodiment, a description has been given of a case where the floodlight lamp of the present invention is applied to a shield beam lamp. However, the present invention is not limited to this. For example, a reflector whose bulb is replaceable as shown in FIG. It can be applied to a floodlight using 2A.

[0043]

As is apparent from the above description, the floodlight according to the present invention has a reflector made of glass and a front lens made of glass which covers an opening surface of the reflector, and an inner surface of the reflector. Is characterized in that, in a floodlight having a reflection film formed thereon, an annular step portion having a surface facing substantially forward is formed integrally at a position slightly inside the opening edge of the reflector.

Therefore, in the floodlight according to the present invention, since the annular step having the surface facing substantially forward is formed integrally with the inclined surface of the opening of the reflector, a ring is formed on the surface facing forward of the step. The jig can be abutted, so that even if there is a slight error in the dimensions of each part of the reflector and there is a gap between the opening inclined surface of the reflector and the ring-shaped jig, reflection occurs during film formation. The components of the film are not formed on the inclined surface of the opening, and therefore, the components of the reflection film do not intervene in the portion where the reflector and the front lens are to be welded. There is nothing worse.

In the above embodiment, the description has been given of the floodlight in which the reflection film is a multilayer reflection film that transmits infrared rays. However, the floodlight of the present invention is not limited to this.
The present invention can also be applied to a device having a reflective film that reflects light of all wavelengths, such as an aluminum reflective film.

Further, the shapes and structures of the respective parts shown in the above-described embodiments are merely examples for embodying the present invention, and the technical scope of the present invention is thereby reduced. It should not be interpreted restrictively.

[Brief description of the drawings]

FIG. 1 shows an embodiment in which the floodlight lamp of the present invention is applied to a shield beam lamp together with FIGS. 2 to 4, and FIG. 1 is a longitudinal sectional view showing an embodiment.

FIG. 2 is an enlarged sectional view showing a main part.

FIG. 3 is an enlarged cross-sectional view showing a main part in a state where a ring-shaped jig is arranged on a peripheral portion of a reflector.

FIG. 4 is an enlarged cross-sectional view showing a main part in a state where a reflection film is formed.

FIG. 5 is a sectional view in which the present invention is applied to a replaceable reflector of a valve.

FIG. 6 shows an example of a conventional shield beam lamp together with FIGS. 7 to 9 and is a cross-sectional view.

FIG. 7 is an enlarged sectional view of a main part.

FIG. 8 is a cross-sectional view showing a state where a ring-shaped jig is attached to the reflector.

FIG. 9 is an enlarged sectional view of a main part in a state where a ring-shaped jig is attached to the reflector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floodlight 2 Reflector 2a Inner surface 3 Multilayer reflective film 4 Lens 13 Triangular ridge (step) 13a Front (surface facing forward)

Claims (2)

(57) [Claims] 1. A floodlight having a reflector made of glass and a front lens made of glass covering an opening surface of the reflector, wherein a reflection film is formed on an inner surface of the reflector, wherein an opening edge of the reflector is provided. A floodlight having an annular step portion having a surface facing substantially forward at a position slightly closer to the inside than the above. 2. The floodlight according to claim 1, wherein the reflection film is a multilayer reflection film that reflects light of a specific wavelength.