JPH113688A - Reflection type tubular lamp and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the generation of deformation of a light emitting part of a top part of a glass bulb so as to lower the generation of breakdown and color shading and to improve luminous characteristics by forming a surface of a bulb with a multilayered optical interference film, and arranging a sealing part, which is formed by sealing a lead-in conductor and a discharge tune in one end of the glass bulb provided with a sealed luminous source inside thereof, in a base part of a reflecting mirror. SOLUTION: An end of a spherical, a rotary elliptic, a rotary elliptic or a rotary cylindrical glass bulb 2 of a halogen lamp 11 is formed with a crashed sealing part 21 by air-tightly sealing a lead-in conductor 4 of metal foil or metal wire and a discharge tube 25. In an arm-shaped reflecting mirror 6 having a full light reflecting film 61 in an inner surface thereof, a sealing part 21 is housed in a through hole 63 of a base part 62, and fixed by the adhesive agent 64. At the time of forming an outer surface of the glass bulb 2 with a multilayered interference film 5 such as a visible light transmitting and infrared ray reflecting film, a visible light reflecting and infrared ray transmitting film, or an optical filter film with dipping or the like, since a projection such as a discharge tube 25 or the like does not exist in a top part of the glass bulb 2, film thickness is evenly formed. In the sealing part 21, light is not emitted from the film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflective bulb formed by combining a reflecting bulb with a halogen bulb or the like having a multilayer light interference film such as a visible light transmitting infrared reflecting film formed on the surface of a glass bulb. The present invention relates to a lighting device using a tube.

[0002]

2. Description of the Related Art Various efforts have been made in the field of bulbs as part of energy saving. For example, in the case of a halogen bulb, a visible light transmitting infrared reflecting film composed of a multilayer film is formed on the surface of a bulb to reduce the filament. It is known that the emitted visible light is transmitted through the bulb as it is, and the infrared light is reflected by the reflective film and returned to the filament, thereby heating the filament and increasing the luminous efficiency.

As this visible light transmitting infrared reflecting film, a high refractive index layer film made of titanium oxide (TiO ₂ ) or the like and a low refractive index layer film made of silicon oxide (SiO ₂ ) or the like are alternately laminated to form a multilayer. By appropriately selecting the number of layers and the thickness of the layers, light in a desired wavelength range is selectively transmitted and reflected by utilizing light interference. In this halogen bulb, the greater the number of layers of the film, the higher the reflectivity of infrared rays and the greater the power saving effect.

As a method for forming the visible light transmitting infrared reflecting film, various methods such as a dipping method, a vapor deposition method, an ion plating method, and a sputtering method are known. Among these film forming methods, a dipping method, in which a valve is easily obtained by dipping a valve in a film forming solution, pulled up, and fired, is excellent in productivity, cost, etc., is often used. .

In this dipping method, almost the entire bulb is immersed in a solution for forming a visible light transmitting and infrared reflecting film and pulled up. However, even when the coating surface of the bulb surface has a uniform curved surface. In addition, the film thickness of the coating becomes uneven at an upper portion which is first pulled up from the liquid surface or a lower portion which is finally pulled up due to surface tension, flow of the solution, pool, or the like. In the case of the vapor deposition method, the ion plating method, the sputtering method, or the like, a film having a uniform thickness can be obtained, but the work tends to be complicated such that the film needs to be formed while the valve is being rotated.

For example, as shown in FIG. 8, a reflective bulb L to which the halogen bulb 1 sealed at one end is assembled is formed by melting and crushing one end of a bulb 2 having a tubular, spherical or oval shape. On the side of the formed crushing sealing portion 21, an irregularly curved surface having a reduced diameter and a flat portion having a substantially rectangular parallelepiped shape, and the other end opposite to the sealing portion projecting from the valve 2. There are portions where the shape changes greatly, such as the formation of the exhaust pipe 25. As described above, if there are large deformed portions at the upper and lower ends of the valve 2, these exhaust pipes 25 may be formed due to the flow of the solution in the dipping method and the unevenness of the valve 2 in the vapor deposition method.
It is difficult to obtain a visible light transmitting infrared reflecting film 5 having a uniform thickness over the entire bulb 2 including the sealing part 21 and the sealing part 21.

[0007] The halogen bulb 1 comprises a bulb 2
The reflecting mirror 6 and the base 7 are attached to the crushing sealing portion 21 at one end so as to cover the sealing portion 21.
The side remains protruding from the valve 2. And light bulb 1
When the light is turned on, the light incident on the exhaust pipe 25 out of the light from the filament 3 toward the opening of the reflecting mirror 6 is scattered by the exhaust pipe 25, and the coating 5 on the exhaust pipe 25 and the vicinity is Due to the uneven thickness, not only does it not transmit the visible light and infrared light reflected by the design, but the light transmitted through this part causes rainbow-like color unevenness on the irradiated surface, making it impossible to distribute light uniformly. Is generated.

The exhaust pipe 25 protruding from the tip of the bulb 2 easily hits other objects when handling the reflective bulb L, and may damage a human body or an object or break the exhaust pipe 25 to break the bulb L. May be disabled.

[0009]

Therefore, it has been proposed that a visible light transmitting infrared reflecting film is not formed on a portion such as an exhaust pipe which deteriorates light emission characteristics or causes uneven color on an irradiation surface.

[0010] However, the breakage of the protruding exhaust pipe cannot be solved yet, and the work of not forming a film only on the exhaust pipe requires much labor such as peeling and masking.

According to the present invention, when a bulb such as a light bulb (lamp) is incorporated in a reflecting mirror, the light emitting portion on the bulb top side is less deformed and there is no risk of breakage. It is an object of the present invention to provide a reflective tube having improved characteristics and a lighting device using the tube.

[0012]

According to a first aspect of the present invention, there is provided a reflective bulb in which a glass bulb having a multilayer optical interference film formed on a surface thereof, an introduction conductor and an exhaust pipe are sealed at one end of the bulb. A light-emitting source sealed in the bulb, and a reflecting mirror having the sealing portion disposed on the base portion side.

The sealing portion side having the exhaust pipe is disposed on the base portion side of the reflecting mirror, and there is no protruding exhaust pipe at the light emitting side (opening side of the reflecting mirror) at the top of the bulb. Can form a coating having a substantially uniform thickness.

For example, when the bulb on which the visible light transmitting infrared reflecting film is formed is turned on, the coating has a function of transmitting the radiated light from the light source, transmitting the visible light, reflecting the infrared light, and returning to the light source. At this time, there is no uneven portion such as an exhaust pipe on the light emitting side of the outer surface of the bulb, and the formed film thickness is almost uniform. There is no color unevenness such as color difference on the irradiation surface.

Further, although used in combination with a reflecting mirror, reflected light from the reflecting mirror toward the bulb does not hit the exhaust pipe and is scattered.

The bulb is not limited to a halogen bulb or a discharge lamp having a sealed portion formed at one end of the bulb, but may be another type of bulb or discharge lamp. Further, the sealing portion is not limited to the crushing sealing portion, but may be sealing by shrinkage forming formed by shrinking a valve that does not use a pressing mold. Also,
The lead-in conductor hermetically embedded in the sealing portion is not limited to a foil-like conductor, but may be a molybdenum wire or a dumet wire or the like, and its material and diameter are glass material such as a bulb to be sealed or thermal expansion. You just have to match the rate.

The material of the multilayer optical interference film formed on the bulb is titanium dioxide (Ti) as the high refractive index layer film.
O _2), tantalum pentoxide (Ta ₂ O _5), zirconium dioxide (ZrO _2), zinc dioxide (ZnO ₂₎ or the like, silicon dioxide (TiO ₂ as a low refractive index layer film), magnesium fluoride (MgF), etc. Can be used.

Further, as the reflection film formed on the reflection mirror, a selective transmission reflection film such as a dichroic film or an all-light reflection film such as aluminum, silver or chromium can be applied.

According to a second aspect of the present invention, there is provided a reflective bulb comprising:
The shape of the glass bulb is spherical, elliptical, elliptical or cylindrical.

The valve may have a spherical shape, a spheroidal shape, a spheroidal shape or a cylindrical shape, and a sealing portion having an exhaust pipe is formed at one end thereof. To play.

As the material of the glass bulb, hard glass such as quartz glass, aluminosilicate glass, borosilicate glass, etc. can be used.

According to a third aspect of the present invention, there is provided a reflective bulb comprising:
The introduction conductor is a metal foil or a metal wire.

When the material of the glass bulb is quartz glass, molybdenum foil or tungsten foil or the like is used. When the material is hard glass, molybdenum wire or tungsten wire or the like is used. Can be used. Note that the correspondence between the valve and the introduction conductor may be determined in consideration of the coefficient of thermal expansion, thickness, and diameter of each material.

According to a fourth aspect of the present invention, there is provided a reflective bulb comprising:
The multilayer optical interference film is one of a visible light transmitting infrared reflecting film, a visible light reflecting infrared transmitting film, and an optical filter film.

Since the visible light transmitting infrared reflecting film, the visible light reflecting infrared transmitting film, the optical filter film and the like are formed on the bulb with a substantially uniform thickness, the wavelength is substantially uniform over the entire light emitting surface of the bulb. Of light.

According to a fifth aspect of the present invention, there is provided a reflective bulb comprising:
The light emitting source is a filament or a discharge electrode.

The bulb has an inductive conductor sealed at one end of the bulb and an incandescent bulb such as a halogen bulb in which a coiled filament is disposed as a light emitting source, or a discharge electrode is disposed opposite to one end of the bulb. Applicable to high pressure discharge lamps such as metal halide lamps and mercury lamps.

According to a sixth aspect of the present invention, there is provided a reflective tube comprising:
The reflector is characterized in that a light control body is provided in the opening.

In addition to changing the distribution of radiated light, the color of light emitted from the internal bulb and the lamp, it also functions as a protective body for the bulb and the lamp. Further, an antireflection film may be formed on the light control body.

A lighting device according to a seventh aspect of the present invention includes a base, a lighting device, and the reflective tube according to any one of the first to sixth aspects connected to the lighting device. It is characterized by doing.

By mounting the reflective tube having the function described in any one of claims 1 to 6 above, this device has excellent light emission characteristics, and generates color unevenness and glare on the irradiation surface. Can be prevented.

[0032]

Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 shows a small reflective bulb L for floodlight
1 is a partial cross-sectional front view of FIG. In the figure, 11 is a halogen bulb,
Reference numeral 2 denotes a spherical bulb made of quartz glass, 21 denotes a crushed sealing portion formed by crushing the end of the bulb 2, and 3 denotes a filament forming a light source portion formed by coiling a tungsten wire. They are arranged along an axis.
Reference numerals 4 and 4 denote lead conductors made of a molybdenum foil or the like hermetically sealed in the crushed sealing portion 21. The molybdenum foils 4 and 4 are connected to an inner conductor 41 and an outer conductor 42, respectively.
The filament 3 is connected between the inner conductors 41,41. Reference numeral 25 denotes an exhaust pipe connecting the inside and the outside of the valve 2 sealed in the crush sealing portion 21.
It protrudes about 3 to 7 mm from one end. Note that an inert gas such as argon containing halogen is sealed in the sealed valve 2.

A multilayer optical interference film 5 is formed on the outer surface of the spherical portion of the bulb 1 and constitutes, for example, a visible light transmitting infrared reflection film.

Reference numeral 6 denotes a bowl-shaped reflector formed of a hard glass such as quartz glass or borosilicate glass or a metal, and has a selective transmission / reflection film such as a dichroic film on the inner surface or a total light of aluminum, silver or chromium. A reflective film 61 is formed, and the crushed sealing portion 21 of the halogen bulb 11 is accommodated in a through hole 63 of a base 62 at the center thereof, and is bonded and fixed via a heat-resistant silicone resin adhesive 64. Also,
Reference numeral 69 denotes a light control body such as a lens which is attached to the opening of the reflecting mirror 6 by an adhesive or by welding so as to cover the opening.

Reference numeral 7 denotes an EZ10 type base, which comprises a receiver 71 made of ceramics such as steatite and a metal shell 72 provided with a screw portion. The base portion 62 is accommodated and fixed by a silicone resin adhesive 73.

The multilayer light interference film 5 serving as the visible light transmitting infrared reflection film is a high refractive index layer film made of a metal oxide (titanium oxide TiO ₂ ) as a first layer on the outer surface of the bulb 1. A low-refractive-index layer made of a metal oxide (silicon oxide SiO ₂ ) is formed as a layer. Hereinafter, a high-refractive-index layer is formed as an odd-numbered layer and a low-refractive-index layer is formed as an even-numbered layer by alternately stacking 20 to 32 layers. It was done.

The multi-layer interference film 5 is formed by dipping the valve 2 in a coating solution, pulling it up, and baking it to obtain a coating, a vapor deposition method of scattering and adhering a coating material, and an ion plating method. It can be easily obtained by various methods such as sputtering and sputtering.

When the multilayer optical interference film 5 is formed, since the top side of the bulb 2 is a continuous surface having no projections such as the exhaust pipe 25, the solution and the scattered matter are not substantially accumulated and almost no accumulation occurs. A film 5 having a uniform thickness can be formed. At this time, even if the coating 5 is formed on the crushed sealing portion 21 whose shape changes greatly, this portion does not emit light and the adhesive 6
There is no problem because it will be buried in 4.

The reflection type bulb L1 is, for example, shown in FIG.
Is mounted and illuminated. The lighting device (lighting fixture) 8 has a housing 84 attached thereto via a universal joint 83 provided at a lower end of a pole 82 hanging down from a base 81 attached to a ceiling or the like. And
In the reflective bulb 11, the shell 72 of the base 7 is
4 is mounted on a lighting device such as a socket (not shown) provided in the apparatus.

The reflective bulb 11 attached to the illuminating device (illuminating equipment) 8 emits light from the filament 3 when energized from a power source (not shown) via a lighting device. The light emitted from the filament 3 is transmitted by the visible light transmitting infrared reflecting film 5 formed on the surface of the bulb 2 having a spherical shape, and the infrared light is reflected and returned to the filament 3. It is further heated.

Then, the reflective bulb L1 of this embodiment
In the case of (1), the bulb 2 has a spherical shape, and the rate of returning infrared rays to the filament 3 is high. Further, the exhaust pipe 2 is provided on the sealing portion 21 side.
5, the sealing portion 21 side is disposed in the through-hole 63 of the reflecting mirror 6, and there is no projection such as an exhaust pipe on the light emission side of the opening of the reflecting mirror 6, so that there is no scattering of light. A predetermined light emission is performed from the light body 69. Therefore, it is possible to provide a light bulb L1 having improved light emission characteristics and excellent light distribution and visibility without causing unwanted light refraction or uneven color or glare in the emitted light color. In particular, the light bulb L1 is suitable for general lighting, floodlighting, store / exhibition lighting, artistic ornament lighting, and the like that can reduce the emission of heat rays (infrared rays).

FIGS. 3 to 7 show a reflection type tube or a tube incorporated in a reflection mirror (a reflection mirror is omitted) according to another embodiment of the present invention. The same reference numerals are given to the same portions as 2 and the description is omitted.

In the reflective bulb L2 shown in FIG. 3, the sealing portion 21 and the exhaust pipe 25 are located in the through hole 63 of the reflector 62 base portion 62 and the external conductor 42 led out from the sealing portion 21. , 42 are connected to pin terminals 73, 73 and fixed with an adhesive 64, and the pin terminals 73, 73 are used as bases.

The filament 3 extends in a direction perpendicular to the axis of the bulb 2. No light control body is provided at the opening of the reflecting mirror 6.

The halogen bulbs 13 and 14 shown in FIGS. 4 and 5 have an elliptical glass bulb 2 in FIG. 4 and a cylindrical bulb in FIG. An exhaust pipe 25 is provided. These light bulbs 13 and 14 also have a high rate of returning infrared light to the filament 3 and do not have an undesired variation in coating thickness because the exhaust pipe does not protrude from the top side of the bulb 2. If it does so, color unevenness will not be reduced and the same operation and effect as those of the above-described embodiment shown in FIGS. 1 to 3 will be exhibited.

The material of the bulb 2 of the halogen lamp 14 shown in FIG. 5 is made of aluminosilicate glass, and the introduction conductor 4 sealed in the crush sealing portion 21 is made of, for example, a molybdenum wire. Of course, the halogen bulb 14 also does not cause cracks or leaks in the sealing portion 21,
If the cross-sectional area is made the same by changing the introduction conductor 4 from a foil shape to a linear shape, the diameter of the transfer can be significantly reduced. Therefore, since the width S of the sealing portion 21 can be reduced, the through-hole 63 of the reflecting mirror 6 joining the sealing portion 21 can also be reduced to increase the reflection surface, and thus the effective reflection area of the reflection surface 61 can be reduced. This has the advantage that the size can be increased and the emission characteristics can be improved.

In addition, a halogen bulb or the like is usually connected to a shell portion and an eyelet portion of a base by further connecting a lead wire to an external conductor derived from a sealing portion. 4 and 5 showing the embodiment of the present invention.
When the exhaust pipe 25 is disposed in the sealing portion 21 as in the halogen lamps 13 and 14, the exhaust pipe 25 made of glass is used.
Are a pair of external conductors 42, 42 and a lead wire 4 connected thereto for making an electrical connection, making an electrical connection and supporting a light bulb, or acting as a fuse for overcurrent interruption.
5, 45 has an additional function of electrically separating them to prevent a short circuit between the two wires. In particular, it is preferable to use a linear body for the introduction conductor 4 shown in FIG.

FIG. 6 shows an arc tube 15 of a high-pressure discharge lamp such as a metal halide lamp. This arc tube 15
The bulb 2 is made of quartz glass and has a crush seal 21 at one end.
And the exhaust pipe 25, and the tips of the internal conductors 41, 41 made of tungsten or molybdenum connected to the molybdenum foils 4, 4 sealed in the crush sealing part 21 form a light source part as a discharge electrode. A discharge medium such as a halide, mercury, or argon gas is sealed in the bulb 2. On the outer surface of the bulb 2, a multilayer optical interference film 5 is formed as a visible light transmitting infrared reflection film similar to that described above. The luminous tube 15 is hermetically sealed directly or in an outer tube (not shown) and housed in the reflecting mirror 6, and a base is attached to complete the discharge lamp.

Then, the discharge lamp is connected to a lighting circuit having a ballast and the like to be lit. This lamp emits light when the discharge medium is excited by a discharge 31 between the tips of the internal conductors 41, 41 forming the discharge electrodes in the arc tube 15, and infrared rays of the emitted light are formed on the surface of the bulb 2. The arc discharge path formed between the electrodes and reflected by the visible light transmitting infrared reflecting film 5 is further heated.

Also in the case of the discharge lamp shown in FIG. 6, the feedback rate to the arc discharge 31 generated between the infrared electrodes is high, and the same operation and effect as those of the above-described embodiment can be obtained.

In the above embodiment, the halogen bulb 1
Although the lamps 1 to 14 and the arc tube 15 were directly bonded to the through holes 63 of the reflecting mirror 6 via an adhesive 64, the present invention is not limited to such a reflecting tube integrated with a reflecting mirror, and FIG. As shown, the base 7 may be directly bonded to the sealing portion 21 side of the halogen lamp 16 via an adhesive 64. That is, in the embodiment of FIG.
A reflecting mirror 6 is provided on the side in advance, and a halogen bulb 16 is provided.
By mounting the base 7 on the socket 91 through the through hole 63 of the reflecting mirror 6, the halogen bulb 16 can be turned on through a lighting circuit such as the socket 91 and a cord. In FIG. 7, reference numeral 92 denotes a base that also serves as a housing;
Is a socket cradle.

The illumination device (illumination equipment) 9 having such a configuration.
Even in this case, the same operation and effect as those of the above-described embodiment are exhibited. When lighting the high-pressure discharge lamp, it goes without saying that a lighting circuit such as a ballast is separately required.

[0053]

According to the first aspect of the present invention, since there is no exhaust pipe on the top side of the bulb bulb located on the side of the opening where the light is emitted from the reflecting mirror, there is no light scattering. In addition, since the coating thickness formed on the bulb can be made substantially uniform, when the lamp is turned on, light of a predetermined wavelength is reflected and transmitted, so that the light emission characteristics can be improved and the color of the irradiated light becomes uneven or glare. It is possible to provide a reflection-type bulb excellent in light distribution without generation of light.

Further, since the effective light emission area increases, there is an advantage that the power consumption can be reduced when the brightness is the same, and the brightness can be increased when the power consumption is the same.

According to the second aspect of the invention, the same effects as those of the first aspect can be obtained by using valves of various shapes.

According to the third aspect of the invention, the same effect as in the first aspect can be obtained by using a metal foil or a metal wire as the introduction conductor sealed in the sealing portion.

According to the fourth aspect of the present invention, the same effect as that of the first aspect can be obtained by forming the multilayer optical interference film on the surface of the bulb.

According to the fifth aspect of the present invention, the same effects as those of the first aspect can be obtained by applying the present invention to an incandescent lamp such as a halogen lamp or a high pressure discharge lamp such as a metal halide lamp or a mercury lamp.

According to the invention of claim 6, in addition to changing the light distribution, emission color and the like, the built-in bulb and the lamp are protected from external impact and contamination.

According to the seventh aspect of the present invention, since the reflective tube having the effects of the first to sixth aspects is mounted, the device has excellent light emission characteristics, and has uneven color and glare on the irradiation surface. Can be prevented from occurring.

[Brief description of the drawings]

FIG. 1 is a partially sectional front view showing an embodiment of a reflective bulb (halogen lamp) according to the present invention.

FIG. 2 is a perspective view showing an embodiment of a lighting device (lighting fixture) according to the present invention.

FIG. 3 is a partial cross-sectional front view showing another embodiment of the reflective bulb (halogen bulb) according to the present invention.

FIG. 4 is a partially sectional front view showing another embodiment of the bulb (halogen lamp) according to the present invention.

FIG. 5 is a partially sectional front view showing another embodiment of the bulb (halogen bulb) according to the present invention.

FIG. 6 is a front view showing an embodiment of a bulb (a discharge tube of a discharge lamp) according to the present invention.

FIG. 7 is a sectional front view showing another embodiment of a lighting device (lighting fixture) according to the present invention.

FIG. 8 is a front view showing a conventional reflective bulb (halogen bulb).

[Explanation of symbols]

 L1, L2: reflective bulb (halogen bulb) 11 to 14, 16: halogen bulb 15: arc tube of discharge lamp 2: glass bulb 21: sealing portion 25: exhaust tube 3: light source (filament, discharge electrode) 4: Introductory conductor 5: Visible light transmitting infrared reflecting film (multilayer interference film) 6: Reflecting mirror 62: Base 69: Light control body 7: Base 8, 9: Illumination device (illumination equipment)

Claims (7)

[Claims] 1. A glass bulb having a multilayer optical interference film formed on a surface thereof; a sealing portion sealing an introduction conductor and an exhaust pipe on one end side of the bulb; a light emitting source sealed in the bulb;
And a reflecting mirror having a sealing portion disposed on the base portion side. 2. The reflective bulb according to claim 1, wherein the shape of the glass bulb is spherical, elliptical, elliptical, or cylindrical. 3. The reflective tube according to claim 1, wherein the introduction conductor is a metal foil or a metal wire. 4. The reflective tube according to claim 1, wherein the multilayer light interference film is one of a visible light transmitting infrared reflecting film, a visible light reflecting infrared transmitting film, and an optical filter film. 5. The reflective tube according to claim 1, wherein the light-emitting source is a filament or a discharge electrode. 6. The reflective tube according to claim 1, wherein the reflector has a light control body in an opening. 7. An illuminating device comprising: a base; a lighting device; and the reflective bulb according to claim 1 connected to the lighting device. .