WO2006054563A1 - 管球、反射鏡付き管球および照明装置 - Google Patents
管球、反射鏡付き管球および照明装置 Download PDFInfo
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- WO2006054563A1 WO2006054563A1 PCT/JP2005/020976 JP2005020976W WO2006054563A1 WO 2006054563 A1 WO2006054563 A1 WO 2006054563A1 JP 2005020976 W JP2005020976 W JP 2005020976W WO 2006054563 A1 WO2006054563 A1 WO 2006054563A1
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- filament
- central
- bulb
- peripheral
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/14—Incandescent bodies characterised by the shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/18—Mountings or supports for the incandescent body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K7/00—Lamps for purposes other than general lighting
- H01K7/02—Lamps for purposes other than general lighting for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector
Definitions
- the present invention relates to a tube, a tube with a reflector, and an illumination device, and more particularly to a filament wiring structure.
- a bulb with a reflector for example, a halogen bulb with a reflector
- Condensation efficiency here refers to illuminance per unit of power [lxZW].
- a halogen light bulb includes a bulb and a filament body provided in the bulb.
- the filament body can be made closer to a point light source as it is made compact, and the light collection efficiency can be improved in combination with a reflecting mirror.
- the rated voltage [V], rated power [W], and rated life time for example, 3000 hours
- the strand length and strand length of the tungsten wire that forms the filament body Since the diameter is actually determined, for example, it is not possible to make the filament body compact by simply shortening the wire length.
- the resistance value R of the filament body is determined. For example, if the strand length is shortened, it is necessary to reduce the strand diameter in order to maintain the resistance value R. However, when the wire diameter is reduced, the tungsten wire becomes thinner due to evaporation of tungsten during lighting and the wire tends to be broken, and the lifetime tends to be shortened. On the other hand, when the wire diameter is increased in order to ensure the service life, it is necessary to increase the wire length in order to maintain the resistance value R. However, if the wire length becomes too long, the filament body dimensions must be kept within a certain range according to the size of the nobleb, etc.
- the wire length and wire diameter are substantially uniquely determined, making it difficult to make the filament body compact. It is.
- a commercially available halogen light bulb with a reflector used for general illumination such as a spotlight has a beam angle of 10 degrees and a mirror mirror diameter ⁇ of 50 [mm].
- the rated power is 65 [W] (rated voltage 110 [V])
- center illuminance here refers to the illuminance of the region where the optical axis of the reflecting mirror and the irradiation surface intersect on the irradiation surface.
- a plurality of filament elements wound linearly and spirally are used in order to increase the light collection efficiency and increase the central illuminance.
- These filament elements use filament bodies arranged so as to be parallel to the optical axis of the reflecting mirror and to form a regular triangle or square substantially symmetrically around the optical axis.
- Known see, for example, Patent Document 1).
- an infrared reflecting film is formed on the outer surface of the glass bulb, particularly in order to improve luminous efficiency!
- the filament body used in the conventional halogen bulb with a reflector is further linear on the optical axis.
- a filament element wound spirally is arranged, that is, a filament arranged on the optical axis (hereinafter referred to as “central filament element”) and at least 3 arranged substantially symmetrically around the filament.
- central filament element a filament arranged on the optical axis
- peripheral filament elements Two other filaments (hereinafter referred to as “peripheral filament elements”) have been proposed using a filament body that also has a force (for example, Patent Document 2). Irradiation).
- the "luminescence efficiency" referred to here indicates a luminous flux [lmZW] per electric power. Furthermore, in general, in halogen bulbs with a rated voltage of 100 [V] or more, a double-wound coil is often used as a filament body as another means for making the filament body compact and approaching a point light source. In order to achieve this compactness, one using a triple coil as a filament body has been proposed (for example, see Patent Document 3). Patent Document 1: Japanese Patent Publication No. 6-510881
- Patent Document 2 JP 2002-63869 A
- Patent Document 3 Japanese Patent Laid-Open No. 2001-345077
- the characteristics of the light bulb using the filament body described in Patent Document 2 are indicated by a solid line (ii)!
- the filament elements arranged around the optical axis increase the illuminance in the peripheral area of the portion corresponding to the optical axis on the irradiation surface, while the central illuminance (angle 0)
- the peripheral filament element increases the illuminance not only in the area corresponding to the optical axis but also in the surrounding area due to the peripheral filament element.
- the irradiation light spreads as a whole, and the resulting beam angle is 13 degrees or more.o
- the mainstream beam angle is 10 degrees.
- the error tolerance of the beam angle (10 degrees) is limited to ⁇ 25%. In other words, when the beam angle standard is 10 degrees, the error tolerance is 7.5. From degrees to 12.5 degrees. Therefore, on Even when applied to halogen bulbs with reflectors that are used for general illumination such as the conventional filament strength spotlights described above, the above-mentioned error tolerance is exceeded and the desired beam angle (for example, 10 degrees) is exceeded. Can't get.
- Such a problem is not particularly noticeable when it is used for studio lighting. This is thought to be mainly due to the difference in the mirror mirror diameter ⁇ .
- the mirror diameter ⁇ of the reflector used in halogen bulbs with reflectors for general lighting is mainly 35 [mn! ] ⁇ 100 [mm]
- the mirror diameter ⁇ of the reflector used in a halogen lamp with a reflector for studio lighting is mainly 200 [mm] ⁇ 400 [mm].
- the region contributing to the central illuminance in the reflector (hereinafter simply referred to as “central illuminance contributing region”) is in the vicinity of the region including the focal point of the reflector.
- This central illuminance contribution region is larger as the mirror diameter ⁇ is smaller as the mirror diameter ⁇ is smaller. Therefore, in the halogen lamp with a reflector for studio lighting, the central illuminance contribution area is large, and as a result, the light emitted from the light emitting part arranged around the optical axis also greatly contributes to the central illuminance. It is thought that this is because.
- this kind of halogen lamp with a reflector when used for studio lighting, its rated life is mainly 200 hours to 500 hours, and in some cases 2000 hours. For general lighting such as spotlights. When used as a light source, the rated life is required to be between 2000 hours and 3000 hours, and in some cases over 3000 hours. As such, it is commercially available, and its lifetime has not been sufficiently studied. Therefore, there is still room for improvement in terms of lifetime especially when used for general lighting such as spotlights.
- the vibration resistance tends to decrease.
- the triple winding coil is used as the filament body in the bulb. In order to improve vibration resistance, it is electrically and mechanically connected to the internal lead wire, etc. in a state where the triple coiled coil is pulled in the longitudinal direction, that is, under tension. There is a need to.
- the present invention has been made in view of such circumstances.
- the first object is to improve the light collection efficiency
- the second object is to increase the central illuminance
- the third object is the beam.
- the fourth object is to provide a tube, a tube with a reflector, and a lighting device that can realize a good light distribution characteristic with a narrow angle type and can achieve a long life.
- the tube according to the present invention is incorporated in the concave reflecting mirror of the lighting device, and has a rated voltage of 100 [V] or more and 250 [V] or less.
- a bulb and a filament body provided in the bulb the filament body has a plurality of filament elements, and the bulb is incorporated in the reflector
- the plurality of filament elements are single wound coils, one on the optical axis of the reflector, and the center of the plurality of filament elements.
- One or more of the remaining coils are placed on an axis parallel to the axis of the filament element,
- Each of the plurality of filament elements has a configuration in which a contour when viewed from the winding axis direction is different from a substantially circular shape.
- a bulb the bulb has a bulb and a filament body provided in the bulb, the filament body is disposed so as to contain the focal point of the reflector, and includes a plurality of filament elements.
- Each of the plurality of filament elements is a coil wound in a single winding, one on the optical axis of the reflecting mirror, and one or more of the remaining coils on an axis parallel to the optical axis.
- Each of the filament elements is formed such that the contour when viewed in the direction of the winding axis is different from a substantially circular shape.
- a tube with a reflector includes a concave reflector, a bulb disposed in the reflector, and a bulb.
- a tube having a filament body provided in the nozzle, and the filament body has a linear shape in which the central axis in the longitudinal direction is substantially located on the optical axis of the reflector.
- Each of the peripheral filament elements is connected to a crossing point where a longitudinal central axis of each of the peripheral filament elements intersects a plane perpendicular to the longitudinal central axis of the central filament element.
- the central filament elements are arranged so as to form a substantially regular polygon having the center of gravity (centroid) at the intersection of the longitudinal central axis of the element and the plane.
- the length L in the longitudinal direction of the peripheral filament element is such that L / L is 0.2 or more and 0.9 or less.
- the tube is incorporated in the reflecting mirror portion of the lighting device, and the tube includes a bulb and a filament body provided in the bulb,
- the filament body includes a linear central filament element whose longitudinal center axis is substantially located on the optical axis of the reflective mirror portion when the tube is incorporated in the reflective mirror portion, and the central filament element described above.
- peripheral filament elements arranged such that a longitudinal central axis is substantially parallel to a longitudinal central axis of the central filament element, the peripheral filament element being When the intersecting points where the longitudinal center axis of each of the peripheral filament elements intersects the plane perpendicular to the longitudinal center axis of the center filament element are respectively connected, Are arranged so as to form a substantially regular polygon whose center of gravity (centroid) is the intersection of the center axis in the longitudinal direction of the ment element and the plane, and the longitudinal length L of the central filament element, Of the peripheral filament element
- the length L in the longitudinal direction is adjusted so that L / L is not less than 0.2 and not more than 0.9.
- the tube according to the present invention includes a valve and a filament body that is disposed inside the valve and has at least three linear filament elements.
- the filament element has a longitudinal central axis that is substantially parallel to the longitudinal central axis of the bulb and surrounds the longitudinal central axis of the bulb.
- the tube is incorporated in the reflecting mirror portion of the illumination device, and the tube includes a bulb and a filament body disposed inside the bulb.
- the filament body includes a linear central filament element whose longitudinal central axis is substantially located on the optical axis of the reflective mirror portion when the tube is incorporated in the reflective mirror portion, and the central filament.
- the peripheral filament element comprising: When the intersections where the longitudinal central axis of each peripheral filament element intersects with a plane perpendicular to the longitudinal central axis of the central filament element are respectively connected, the center The filament elements are arranged so as to form a substantially regular polygon having a center of gravity (centroid) at the intersection of the center axis in the longitudinal direction of the filament element and the plane, and the filament body is located among the bulbs.
- the maximum inner diameter R of the portion and the maximum outer diameter r of the filament body are adjusted so that rZR is 0.25 or more and 0.75 or less.
- the bulb with a reflector includes a concave reflector, a bulb disposed in the reflector, and a filament body provided in the bulb.
- the filament body includes a linear central filament element whose longitudinal center axis is substantially located on the optical axis of the reflecting mirror, and a longitudinal center around the central filament element.
- the tube according to the present invention is a tube having a rated voltage of 100 [V] or more and 250 [V] or less that is incorporated in the reflecting mirror of the lighting device, and the tube is a bulb. And a filament body provided in the bulb, and the filament body is disposed so as to include the focal point of the reflector in a state where the tube is incorporated in the reflector. And since it has a plurality of filament elements, and each of the plurality of filament elements is a coil that has been wound around each other, it is possible to improve the vibration resistance as compared to a coil that is wound in multiple layers.
- each of the plurality of filament elements constituting the filament body is a coil wound once, the coil pitch can be reduced as compared with a coil wound multiple times,
- the plurality of filament elements are arranged on the optical axis of the reflecting mirror and one or more of the remaining coils are arranged on an axis parallel to the optical axis, the optical axis of the reflecting mirror is arranged. Compared to the case where the filament element is not arranged on the top, the central illuminance and the light collection efficiency can be improved.
- each of the filament elements is formed so that the outline when viewed from the winding axis direction is different from a substantially circular shape, and therefore, the filament when viewed from the winding axis direction.
- the length of the filament body in the optical axis direction can be shortened compared to the case where the outline of the element is substantially circular, that is, a perfect circle or a circle close to a perfect circle distorted by high or low machining accuracy. Therefore, the tube can increase the ratio of the filament body existing in the central illuminance contribution region in the reflecting mirror as compared with the conventional tube, thereby increasing the central illuminance and improving the light collection efficiency. Can do.
- the contour is flat because manufacture is easy.
- the outline is rectangular, substantially track-shaped or oval, it is easier to manufacture, and in particular, the track-shaped or oval is preferably used with a core wire that is conventionally used to produce filament elements. Can be produced and when it becomes easier to manufacture ,preferable.
- the number of the plurality of filament elements is three, the number of the peripheral filament elements can be reduced, and the light emitted from the central filament element is suppressed from being blocked by the peripheral filament elements. Since the number of filament elements in the filament body is reduced, the gap between filament elements can be widened, impact resistance, Vibration resistance and life can be improved.
- the three filament element forces are preferably provided in the valve so that the respective winding axes are arranged on the same plane, which makes it possible to achieve uniform light distribution on the irradiated surface. .
- the reflecting surface of the reflecting mirror is a spheroidal outer peripheral surface or a rotating parabolic surface and the inner diameter of the aperture is 30 [mm] or more and 100 [mm] or less, the beam angle is 7.5 degrees or more and 12 Less than 5 degrees, so-called narrow angle is easy and preferable.
- the tube with a reflector includes a concave reflector, a bulb disposed in the reflector, and a filament body provided in the bulb.
- the filament body includes a linear central filament element having a longitudinal central axis substantially positioned on the optical axis of the reflector, and a longitudinal center around the central filament element.
- At least three peripheral filament elements arranged such that an axis is substantially parallel to a longitudinal central axis of the central filament element, the peripheral filament element being a longitudinal axis of each of the peripheral filament elements.
- the coil length Ls of the peripheral filament element can be made relatively shorter than the coil length Lc of the center filament element, or the center filament element
- the coil length Lc can be made relatively longer than the coil length Ls of the peripheral filament element, so that the central illuminance is improved and the central illuminance is set to the maximum illuminance compared to a conventional tube with a reflector.
- the beam angle can be narrowed. Therefore, the tube with the reflector can increase the central illuminance as compared with the conventional tube with the reflector, and can realize a good light distribution characteristic particularly with a narrow-angle beam angle. it can.
- the central illuminance contribution region The density of the filament body can be increased, and the occurrence of arc discharge between the central filament element and each peripheral filament element constituting the filament body can be suppressed.
- the center illuminance can be improved compared to a sphere, and the filament elements can be prevented from being disconnected.
- the above effect is not limited to the case where the reflecting mirror is provided in the tube, but can be obtained in the same manner even when the tube is provided on the side of the illuminating device to be mounted. However, it is assumed that the optical axis of the reflector provided in the illumination device and the central axis in the longitudinal direction of the tube are substantially coincident.
- the above effect is not limited to a tube with a reflector, and a tube without a reflector that has been abolished from the tube with a reflector can be incorporated into an illumination device having a reflector. Is obtained in the same way. However, it is premised that the optical axis of the reflecting mirror portion and the central axis in the longitudinal direction of the tube without the reflecting mirror substantially coincide.
- the tube that is effective in the present invention includes a valve and a filament body that is disposed inside the noble and has at least three linear filament elements, and the filament element has a longitudinal direction.
- a central axis in the direction of the direction of the valve is substantially parallel to the central axis in the longitudinal direction of the bulb, and stands in such a manner as to surround the central axis in the longitudinal direction of the bulb, and the longitudinal center of each filament element Axle and longitudinal center of the valve
- intersecting points that intersect with a plane perpendicular to the axis are connected to each other, they are arranged so as to form a substantially regular polygon whose center of gravity (centroid) is a point on the central axis in the longitudinal direction of the valve.
- rZR is 0.25 or more Since the maximum outer diameter r and maximum inner diameter R are determined to be less than or equal to 75, they are generated between the bulb and the filament body when the tube is turned on compared to the conventional tube.
- the convection layer can be made thinner, the amount of evaporation of the filament body constituent material can be suppressed, and the temperature rise of the valve and filament body can be suppressed, so that the filament body is prevented from being disconnected.
- the tube that is incorporated in the reflector part of the lighting device, the tube having a bulb and a filament body arranged inside the bulb, and the filament body is formed by the tube
- the central axis in the longitudinal direction is positioned substantially on the optical axis of the reflector part, and the central axis in the longitudinal direction is around the central filament element.
- At least three peripheral filament elements arranged so as to be substantially parallel to the longitudinal central axis of the central filament element, wherein the peripheral filament element is a longitudinal center of each of the peripheral filament elements
- the peripheral filament element is a longitudinal center of each of the peripheral filament elements
- They are arranged so as to form a substantially regular polygon whose center of gravity (centroid) is a point on the mandrel, and the maximum inner diameter of the part of the noreb where the filament body is located is R [ mm], and when the maximum outer diameter of the filament body is r [mm], the above effect is also obtained when the configuration satisfying the relational expression of 0.25 ⁇ r / R ⁇ 0.75 is satisfied. It is done.
- the concave reflecting mirror comprises a concave reflecting mirror, a tube disposed in the reflecting mirror and having a bulb and a filament body provided in the bulb, the filament body having a longitudinal length
- a linear central filament element whose central axis is substantially located on the optical axis of the reflector, and a longitudinal central axis around the central filament element is the longitudinal center of the central filament element.
- At least three peripheral filament elements arranged so as to be substantially parallel to the axis, wherein the peripheral filament elements include a longitudinal central axis of each of the peripheral filament elements and a longitudinal axis of the central filament element.
- LcL should be 0.2 or more and 0.9 or less.
- the coil length Ls of the peripheral filament element can be made relatively shorter than the coil length Lc of the central filament element, or the coil length Lc of the central filament element can be Since the coil length Ls of the filament element can be made relatively long, the central illuminance can be improved and the central illuminance can be maximized as compared with the conventional tube with a reflector.
- the angle can be narrowed, the central illumination can be increased, and a good light distribution characteristic can be realized particularly when the beam angle is a narrow angle type.
- the central illuminance contribution region The density of the filament body in the filament body can be increased, and arc discharge can be suppressed from occurring between the central filament element constituting the filament body and each peripheral filament element, thereby improving the central illuminance. This is preferable because each filament element can be prevented from being disconnected and contribute to a longer life.
- FIG. 1 is a schematic configuration diagram in which a part of a lighting device in which a halogen light bulb is incorporated in a lighting fixture including a reflecting mirror in the first embodiment is cut out.
- FIG. 2 is a schematic configuration diagram in which a part of a halogen bulb scheduled to be inserted into the lighting device is cut out in the first embodiment.
- FIG. 3 is a schematic perspective view showing a lead wire and a support wire that support a filament body provided in the halogen light bulb in the first embodiment.
- FIG. 4 is a schematic perspective view showing a filament body provided in a bulb of a halogen light bulb, a lead wire for supporting it, and a support wire according to the first embodiment.
- FIG. 5 is a schematic cross-sectional view of the filament body provided in the halogen bulb in Embodiment 1 cut in a direction perpendicular to the bulb axis direction.
- FIG. 6 is a schematic perspective view showing a lead wire and a support wire that support a filament body provided in the halogen light bulb in the second embodiment.
- FIG. 7 is a schematic perspective view showing a filament body provided in a bulb of a halogen light bulb according to Embodiment 2, a lead wire that supports the filament body, and a support wire.
- FIG. 8 is a schematic cross-sectional view of the filament body provided in the halogen light bulb according to Embodiment 2 cut in a direction perpendicular to the bulb axis direction.
- FIG. 9 is a characteristic diagram showing the relationship between the central illuminance and the distance between filament element (coil) winding axes in the filament bodies of Embodiment 1 and Embodiment 2 as a result of simulation tests.
- FIG. 10 is a characteristic diagram showing the relationship between the central illumination and the distance between the filament element (coil) winding axes in the filament body having the three filament elements according to the second embodiment from the results of the simulation test.
- FIG. 11 is a characteristic diagram showing the relationship between the gap between filament elements and the central illuminance in the filament body having three filament elements according to the second embodiment, as well as the results of a measurement test.
- FIG. 12 is a characteristic diagram showing the relationship between the gap between the filament elements and the beam angle in the filament body having the three filament elements according to the second embodiment, as well as the result of the measurement test.
- FIG. 13 is a schematic configuration diagram schematically showing a coil arrangement in a plane perpendicular to the coil axis for each sample used in the central illuminance and light distribution characteristic evaluation test of Embodiment 2.
- FIG. 14 is a schematic cross-sectional view of a halogen light bulb with a reflector in a third embodiment.
- FIG. 15 is a schematic configuration diagram in which a part of the halogen light bulb with a reflector in Embodiment 5 is cut away.
- FIG. 16 is a schematic sectional view of the filament body provided in the halogen light bulb with a reflector in the fifth embodiment, cut in the optical axis direction.
- FIG. 17 is a schematic sectional view of the filament body provided in the halogen light bulb with a reflector in the fifth embodiment, cut in a direction perpendicular to the optical axis direction.
- FIG. 18 is a characteristic diagram showing the relationship between the beam angle and the ratio between the axial length of the central filament element and the axial length of the peripheral filament element in the halogen light bulb with a reflector according to the fifth embodiment.
- FIG. 19 In the halogen bulb with reflector according to the fifth embodiment, the characteristic showing the light distribution curve when the ratio of the axial length of the central filament element to the axial length of the peripheral filament element is 0.9.
- FIG. 20 shows a light distribution curve when the ratio of the axial length of the central filament element to the axial length of the peripheral filament element is 0.6 in the halogen light bulb with a reflector according to the fifth embodiment. It is a characteristic chart.
- FIG. 21 is a schematic configuration diagram in which a part of a halogen light bulb in Embodiment 8 is cut away.
- FIG. 22 is a schematic cross-sectional view of the filament body provided in the halogen light bulb in the eighth embodiment, cut along the bulb axis direction.
- FIG. 23 is a schematic cross-sectional view of the filament body provided in the halogen light bulb in the eighth embodiment, cut in a direction perpendicular to the bulb axial direction.
- FIG. 24 is a schematic cross-sectional view of another filament body provided in the halogen light bulb according to the eighth embodiment, cut in a direction perpendicular to the bulb axis direction.
- FIG. 25 is a schematic configuration diagram in which a halogen light bulb is incorporated in a lighting fixture including a reflecting mirror in the ninth embodiment, and a part of the lighting device is cut away.
- FIG. 26 is a schematic cross-sectional view of the filament body provided in the halogen light bulb according to the ninth embodiment and the twelfth embodiment, cut in the optical axis direction.
- FIG. 27 is a schematic cross-sectional view of the filament body provided in the halogen light bulb according to the ninth embodiment and the twelfth embodiment, cut in a direction perpendicular to the optical axis direction.
- FIG. 28 is a schematic sectional view of another filament body provided in the halogen light bulb according to the ninth embodiment, cut in a direction perpendicular to the optical axis direction.
- FIG. 29 is a schematic configuration diagram in which a part of a halogen light bulb with a reflector in Embodiment 10 is cut away.
- FIG. 30 is a schematic configuration diagram in which a part of a halogen light bulb with a reflector in Embodiment 11 is cut away.
- FIG. 31 is a characteristic diagram showing the relationship between the ratio of the axial length of the central filament element to that of the peripheral filament element and the beam angle in the halogen lamp with a reflector of the eleventh embodiment.
- FIG. 32 shows a light distribution curve when the ratio of the axial length of the central filament element to the axial length of the peripheral filament element is 0.9 in the halogen lamp with a reflector of the eleventh embodiment.
- FIG. 33 shows a light distribution curve when the ratio of the axial length of the central filament element to the axial length of the peripheral filament element is 0.6 in the halogen lamp with a reflector of the eleventh embodiment.
- FIG. 34 is a characteristic diagram showing a light distribution curve in a conventional halogen lamp with a reflector. Explanation of symbols
- FIG. 1 is a schematic configuration diagram in which a part of a lighting device in which a halogen bulb is incorporated in a lighting fixture including a reflecting mirror in the first embodiment is cut away.
- the illumination device 110 is mainly used for general illumination such as a spotlight as an example, and the light is emitted from the opening 111, and the internal device
- the reflector 112 is housed in a cylindrical lighting fixture 113 and a halogen bulb 114 with a rated power of 65 [W] (rated voltage 110 [V]) incorporated in the reflector 112.
- the rated voltage of the halogen bulb 114 is not limited to the above voltage, but may be set within a range of 100 [V] to 250 [V].
- a receptacle (not shown) to which a base 116 (see FIG. 2) of the halogen bulb 114 is attached.
- a front glass 118 is attached to the reflecting mirror 112, and a reflecting surface 119 of a rotating body having an outer peripheral surface of a spheroid or a paraboloidal surface is also formed on the inner surface.
- the reflecting surface 11 9 includes silicon dioxide (SiO 2), titanium dioxide (TiO 2)
- TiO magnesium fluoride
- MgF magnesium fluoride
- ZnS zinc sulfate
- the reflecting mirror 112 can be attached to and detached from the lighting fixture 113.
- the reflecting mirror 112 itself is fixed to the lighting fixture 113 and the front glass. 118 can be detached from reflector 112.
- the lighting fixture 113 itself is not limited to a cylindrical shape, and various known shapes can be used.
- FIG. 2 is a schematic configuration diagram in which a part of the halogen light bulb scheduled to be inserted into the lighting device is cut out in the first embodiment.
- the halogen bulb 114 includes a bulb 115 made of quartz glass or hard glass and the like, and an E-shaped base 116 fixed to the sealing portion 120 side of the bulb 115 with an adhesive 121, for example. And have.
- the nozzle 115 includes a chip-off portion 122, a substantially spheroidal light emitting portion 123, a reduced diameter portion 124, a substantially cylindrical tube portion 125, and a known pinch seal method.
- the sealing parts 120 formed in this way are formed so as to be successively connected.
- a visible light transmitting infrared reflecting film 126 is formed on the outer surface of the bulb 115, on the outer surfaces of the chip-off part 122, the light emitting part 123 and the reduced diameter part 124.
- the "substantially spheroid shape" referred to here is not only in the case of a perfect spheroid shape, but the complete spheroid shape force is shifted due to variations in processing of the glass. It means that it also includes the case.
- the shape of the bulb 115 is not limited to the one in which the tip-off portion 122, the light-emitting portion 123 having a substantially spheroid shape, the reduced diameter portion 124, the cylindrical portion 125, and the sealing portion 120 are successively formed.
- a tip-off part may not be present in some cases
- a light-emitting part and a sealing part having a substantially cylindrical shape are sequentially provided.
- Various well-known valves such as valves formed in series can be used.
- the light emitting portion may be a substantially spherical shape or a substantially complex ellipsoidal shape.
- a filament body 127 is provided in the light-emitting portion 123, and a predetermined amount of each of a halogen substance and a rare gas, or a halogen substance, a rare gas, and a nitrogen gas is sealed therein.
- One end of an internal lead wire 128 made of tungsten, for example, is electrically and mechanically connected to the filament body 127, respectively.
- the other end of the internal lead wire 128 is connected to one end of the external lead wire 130 through a molybdenum metal foil 129 sealed in the sealing portion 120. Connected to the end.
- the other end of the external lead wire 130 is led out of the valve 115 and is electrically connected to the terminal portions 117a and 117b of the base 116, respectively.
- a support wire 228 for realizing the arrangement described below of the filament element constituting the filament body 127 is extended with one end supported by the stem glass 328.
- FIG. 3 is a schematic perspective view showing a lead wire and a support wire that support the filament body provided in the halogen light bulb according to Embodiment 1 and energize the filament body
- FIG. 4 shows the embodiment.
- 1 is a schematic perspective view showing a filament body provided in a bulb of a halogen bulb, and a lead wire and a support wire for supporting and supporting the filament body
- FIG. The filament body provided in the bulb is connected to the bulb axis X direction.
- FIG. 6 is a schematic cross-sectional view cut in a vertical direction.
- the filament body 127 has a plurality of, for example, four filament elements (coils) 131, 132, 133, 134. These four filament elements (coinole) 131, 132, 133, 134 ⁇ are electrically connected. Further, the filament body 127 is at a position where the position with respect to the reflecting mirror 112 includes the focal point F of the reflecting mirror 112.
- the focal point F is the column.
- the focal point F is inside the filament element (coil) 131, 132, 133, 134 or
- each coil 131, 132), (131, 133), (131, 134), (132, 133), (132, 134), (133, 134).
- the center point of the filament body 127 is substantially located on the focal point F of the reflecting mirror 112. However, as shown in Fig. 5.
- the point F on the surface of the filament body may be located on the focal point F.
- filament elements (coils) 131, 132, 133, 134 are integrated, and the filament body 127 is schematically shown as a single column.
- the ring elements of filament elements 131, 132, 133, and 134 are shown here.
- Each filament element (coil) 131, 132, 133, 134 is a single winding coil made of tungsten and extending straight in a substantially straight line, as viewed from the longitudinal direction.
- the outline is different from a substantially circular shape, preferably a flat shape, for example, a rectangular shape, or two semicircular portions facing each other so that the curved portion faces outward, and two parallel straight portions connecting them It has a substantially track shape (oval shape) consisting of
- each filament element (coil) 131, 132, 133, 134 is shaped so that the contour when viewed in its longitudinal force has a substantially track shape (oval shape), Compared with the coil length, the coil length Ls in the longitudinal direction of each filament element (coil) 131, 132, 133, 134 is shortened (see FIG. 4).
- the “substantially circular shape” mentioned here includes not only a perfect circle, but also a perfect circle whose shape has slightly deviated from the perfect circle due to manufacturing variations and processing accuracy. This means that it also includes near circles. That is, “a shape different from a substantially circular shape” means a shape that is different from a perfect circle or a circle close to the perfect circle.
- “stretched straight in a substantially straight line” means that the coil after being wound around the core wire should not be actively bent. It depends on manufacturing process variations, accuracy of force, etc. It shall include the case where it is bent.
- the single-winding coil extending straightly in a straight line referred to here includes, of course, a single-winding coil wound straight in a substantially straight line, for example, the single-winding coil in the longitudinal direction of the coil. Including those twisted around the center axis of the rotation axis.
- these filament elements 131, 132, 133, 134 [koo! /] are different from the substantially circular shape.
- it may be a substantially elliptical shape, a substantially flat elliptical shape, a substantially polygonal shape or the like, and is not particularly limited to its outline (except for a substantially circular shape).
- These outlines can be realized by appropriately changing the number of core wires around which the wire is wound, the shape of the core wires, the arrangement of the core wires, and the like in the filament element (coil) manufacturing process.
- these filament elements ( Coil) 131, 132, 133, and 134 have a wire diameter (element wire diameter) force ⁇ ).
- 015 [mm to 0.100 [mm] for example, 0.040 [mm] tungsten wire with a diameter of 0.4 [ A pitch of 0.05 mm [mn!] with two [mm] core wires arranged next to each other in parallel. ] ⁇ 0.07 [mm] Wrapped around. Therefore, the radius of the semicircular part is 0.24 [mm] and the length of the straight part is 0.4 [mm].
- Each filament element (coil) 131, 132, 133, 134 has a coil length L (see s4 in Fig. 4) of 4 [mm], a maximum width W (see Fig. 5) of 0.88 [mm], Small width W (see Fig. 5) is max mm
- Filament elements (coils) 131, 132, 133, 134 may be produced by winding the tungsten wires at the pitches on three core wires arranged in parallel and adjacent to each other! Ryo. When force is applied, the filament length (see Fig. 4) of each filament element 131, 132, 133, 134 is further shortened to contribute to the central illuminance in the reflector 112.
- central illuminance contribution region the ratio of the filament body 127 in the area (hereinafter referred to as “central illuminance contribution region”) can be further improved.
- each filament element (coinole) is increased.
- 131, 132, 133, 134 coin length Ls can be shortened
- the gap between the filament elements (coils) is narrowed, and the vibration resistance, impact resistance and life are reduced, so that the vibration resistance, impact resistance and life are not impaired. It is more preferable to determine the maximum width Wmax.
- a plurality of filament elements (coils) 131, 132, 133, and 134 constituting the filament body 127 are combined with one coil, that is, a filament body (indicated by a broken line in FIGS. 4 and 5).
- the coil (filament body) of the coil within the region that greatly contributes to the central illuminance in the reflector 112 (hereinafter, simply referred to as “central illuminance-donating region”).
- the size and shape of the filament body 127 that is, the shape of each filament element (coil) 131, 132, 133, 134 (excluding the substantially circular shape), size, and arrangement (space between the coils (filament elements)) Including) is appropriately determined. Therefore, if the filament body 127 is within the above-mentioned central illuminance contribution region, the size and shape of the filament body 127, that is, the shape of each filament element (coil) 131, 132, 133, 134 (excluding the substantially circular shape), dimensions
- the arrangement is not limited to that described above.
- the wire length and wire diameter of the tungsten wire constituting the filament body 127 generally depend on the rated voltage, rated power and rated life time (eg, 3000 hours) of the halogen bulb 114. Each filament element (coil) within the range of the wire length and wire diameter.
- the tungsten wire has a wire length of, for example, 420 [mm] to 480 [mm] and a wire diameter of, for example, 0.05 [mm] to 0.
- the wire length of tungsten wire for example, is 250 [mm] to 300 [mm] and the wire diameter is 0.02 [mm] to 0.0.
- the wire length of tungsten wire used for halogen bulbs with a rated power of 03 [mm] and 100 [W] is, for example, 540 [mm] to 6 20 [mm], and the wire diameter is 0.07 [mm] to 0.0. 08 [mm].
- each filament element (coinole) 131, 132, 133, 134 is substantially on the same plane. Moreover, since the coil lengths L of the filament elements (coils) 131, 132, 133, 1 34 are all the same, each filament element (coil) 131, 13 s4
- filament elements (coils) 131 are also substantially on the same plane.
- filament elements (coils) 131 are also substantially on the same plane.
- the end surfaces opposite to the sealing portion 120 are preferably positioned on substantially the same plane. Thereby, the illuminance to the irradiation surface irradiated by each filament element (coil) 131, 1 32, 133, 134 can be made uniform, and a uniform light distribution curve can be obtained.
- each filament element (coinole) 131, 132, 133, 134 when viewed from the longitudinal direction, the filament element (coil) 131 has a central axis a in the longitudinal direction. Located on the longitudinal axis X of the valve 115, each filament element (co
- Filament element (coil) 132 is in the coil axial direction
- the filament element (coil) 133 has a maximum width in a plane perpendicular to the coil axis direction. Straddling the center line b across the centroid and the maximum width of the filament element (coil) 131
- the filament element (coil) 134 has a center line b and a flange passing through its centroid across the maximum width in a plane perpendicular to the coil axis direction.
- the distance r between is 1.52 [mm].
- adjacent filament elements (131, 132), (131, 134), (132, 13
- the filament elements (coils) (1 31, 132), (131, 134), (132, 133), (132, 134), (133, 134) Because the temperature of the filament elements (coils) 131, 132, 133, 134 is higher than that, there is a possibility that the tungsten wire will evaporate and the life of the tungsten wire will be severely shortened. Therefore, even when vibration is applied to the halogen bulb 114 during lighting, adjacent filament elements (coils) (131, 132), (131, 134), (132, 133), (132, 13)
- the distance r is preferably 0.88 [mm] or more in order to prevent short circuit due to contact with (133, 134) and to prevent a short life.
- the vibration resistance can be increased as compared with the multiple-winding coil.
- the pitch can be made sufficiently smaller than the pitch of multiple winding coils.
- the single-winding coil is divided into a plurality of coils and the coil is also a coil (filament element).
- the contours of 131, 132, 133, and 134 viewed from the longitudinal direction are different from the substantially circular shape, preferably a flat shape such as a rectangular shape or a substantially track shape (oval shape).
- the length in the longitudinal direction of the lament body 127 can be shortened. As a result, the ratio of the filament body 127 existing in the central illuminance contribution region in the reflecting mirror 112 can be increased, and the light collection efficiency can be improved.
- the optical axis Y of the reflecting mirror 112 (axis X of the bulb 115)
- the filament element (coil) 131 is arranged so that the longitudinal central axis a of 6 6 is located.
- the filament element (coil) on the optical axis Y of the reflecting mirror 112 axis X of the bulb 115
- the central illuminance can be improved and the light collection efficiency can be improved.
- the force described in the case of using the lighting fixture 113 (including the reflecting mirror 112) as shown in Fig. 1 is replaced with a known species instead of the lighting fixture 113.
- various lighting fixtures including reflectors
- the same effects as described above can be obtained.
- the single coil is used first, so that it is different from the multiple coil.
- the vibration resistance can be increased, and the pitch can be made sufficiently smaller than the pitch of multiple coils.
- (Coil) 131, 132, 133, 134 has a different external shape from the longitudinal direction when viewed from the longitudinal direction, so the filament body 127 is sufficiently shortened with respect to the optical axis Y direction.
- the ratio of the filament body 127 existing in the central illumination contribution region in the reflector can be increased, and the light collection efficiency can be improved.
- Halogen Bulb 114 (hereinafter simply referred to as “Invention A”) as a reflector for a well-known halogen bulb with a reflector (manufactured by Matsushita Electric Industrial Co., Ltd., product number: JDR110V65WKNZ5E11) (including front glass) (narrow angle type) ), Another well-known halogen lamp with a reflector (Matsushita Electric Industrial Co., Ltd., part number: JDR110V65WKM / 5E11) reflector (including front glass) (mid-angle type), another known halogen with a reflector An evaluation test was conducted using each of the lamps incorporated in a reflecting mirror (including front glass) (wide-angle type) of a light bulb (manufactured by Matsushita Electric Industrial Co., Ltd., product number: JDR110V
- a rated power of 65 [W] (used for the lighting device 110 according to the first embodiment of the present invention, except that a triple wound coil is used as the filament body.
- a halogen bulb with a rated power of 65 [W] (rated voltage 110 [V]) (hereinafter referred to as “Comparative Product A”) having the same configuration as the halogen bulb 114 with a rated voltage of 110 [V]) Fifteen of these manufactured comparative products A were each put into the same known reflector (including the front glass) as the product A of the present invention, and the central illuminance [lx] was measured.
- the triple-winding coil used had an element wire length of 460 [mm], an element wire diameter of 0.052 [mm], and a primary coil mandrel diameter of 0.12 mm.
- the primary coil pitch is 0.14 [mm]
- the secondary coil mandrel diameter is 0.28 [mm]
- the secondary coil pitch is 0.55 [mm]
- the tertiary coil mandrel diameter is 1.5 [mm].
- the value of the central illuminance [lx] described later represents an average value of five samples.
- the “light collection efficiency” is defined as the illuminance per power [lxZW]! /, So the contrast between the central illuminance of the product A of the present invention and the central illuminance of the comparative product A is substantially This is a comparison between the light collection efficiency of Invention A and the light collection efficiency of Comparative Product A.
- the center illuminance is 9390 [lx] for the narrow angle type and 5 for the medium angle type.
- the comparative product A has a central illuminance of 5587 [lx] for the narrow-angle type, 3005 [lx] for the medium-angle type, and 1421 [ lx].
- the central illuminance is 1.68 times that of the narrow angle type, 1.69 times that of the medium angle type, and 1.45 times that of the wide angle type, as compared with the comparative product A. It is powerful to be.
- the beam angle of the product A of the present invention was almost the same as that of the comparative product A for each beam angle type.
- the halogen bulbs of the product A of the present invention and the product A of the comparison product A were lit with the same power (65 5 [W]), so the improvement rate of the illuminance is the light collection efficiency [lxZW]. It matches the improvement rate. In other words, it was confirmed that the product A of the present invention improved the light collection efficiency over the comparison product A.
- the configuration of the filament body is only different from that of the first embodiment, and therefore other explanations are omitted.
- FIG. 6 is a schematic perspective view showing a lead wire and a support wire that support the filament body provided in the halogen light bulb according to Embodiment 2 and energize the filament body
- FIG. 7 shows the embodiment
- Fig. 8 is a schematic perspective view showing a filament body provided in a bulb of the halogen bulb in Fig. 2, a lead wire that supports the filament body and energizes the filament body, and Fig. 8 is provided for the halogen bulb in Embodiment 2.
- FIG. 6 is a schematic cross-sectional view cut in a direction perpendicular to 6 directions.
- the filament body 136 has the three filament rod elements (coils) 131, 132, 133 used in Embodiment 1 as shown in FIGS.
- the arrangement of the cables 131, 132 and 133 is different from that shown in the first embodiment.
- the arrangement is as follows. That is, as shown in FIG. 7, the longitudinal center axes a, a, a of the filament elements (coils) 131, 132, 133 are parallel to the longitudinal center axis X of the valve 115.
- the filament element (coil) 131 when each filament element (coil) 131, 132, 133 is viewed from the longitudinal direction, the filament element (coil) 131 has a longitudinal center axis a in the longitudinal direction of the valve 115.
- the filament element (coil) 132 is positioned at the
- center line c and filament element (coil) 131 passing through the centroid across the narrow part The center line c that crosses the part and passes through the centroid is arranged on the same axis.
- the center lines c 1, c 2, c are the lengths of the filament elements (coils) 131, 132, 133.
- a filament element using a core wire whose diameter is increased within a range of, for example, 110 [%] to 200 [%] (Coil) can be made.
- the filament element (coinle) 131, 132, 133 has a shorter coinole length in the longitudinal direction, and the filament element (coil) that occupies the central illumination contribution region 13
- the ratio of 1, 132, 133 is preferred because it increases.
- the gap between the filament elements (coils) 131, 1 32, and 133 is narrowed, and the impact resistance, earthquake resistance, and force that may reduce the lifespan. It is more preferable that the gap is adjusted so as to widen the gap.
- the filament body 136 includes a filament element (coil) 131 on the optical axis Y6 of the reflecting mirror 112 (the central axis X6 of the bulb 115) and Since the number of filament elements (coils) whose axes are parallel to each other is reduced, the light emitted from the filament element (coil) 131 on the optical axis Y6 of the reflecting mirror 112 (the central axis X6 of the bulb 115)
- the filament element (coil) arranged around the filament element (coil) 131 can contribute to an improvement in central illuminance without being blocked by the filament element (coil), and the light collection efficiency can be improved.
- the filament is different from the first embodiment. Since the number of filament elements (coils) in the body is reduced, the gap between the filament elements (coils) can be widened, and impact resistance, vibration resistance, and life can be improved.
- the filament elements (coils) 131, 1 32, 133 are provided in the bulb 115 so that the axes thereof are arranged on the same plane. It is possible to make the light uniform.
- Illumination power center of illuminating device 110 provided with filament body 136 according to the second embodiment of the present invention Illumination force Improved and improved compared to that of illuminating device 110 provided with filament body 126 according to the first embodiment! A comparative test was conducted to confirm this.
- Coil wire length 463 [mm]
- Coil pitch (coil wire center axis distance): 0.074 [mm]
- Example 1 The filament body of Example 1 includes three filament elements (coils), and each filament element (coil) is arranged as shown in Embodiment 2 and has a length. 5.5 It is 5 [mm].
- Comparative Example 1 The filament body of Comparative Example 1 includes four filament elements (coils), and each filament element (coil) is arranged as shown in Embodiment 1, and The length is 4.0 [mm].
- central filament element a filament element arranged on the optical axis of the reflector under the following conditions: Say. ) Is fixed, and the distance between the axes of the filament element (hereinafter referred to as “peripheral filament element”) and the center filament element is changed so as to surround the center filament element. A simulation test was conducted to see if it changed.
- Reflector outer diameter 50 [mm] (Reflector aperture: 41 [mm])
- Reflector type Narrow angle type (beam angle: 10 [°], error tolerance: ⁇ 2.5 [°]) (Test result)
- Figure 9 shows the results of the simulation test. As shown in FIG. 9, in each of Example 1 and Comparative Example 1, it can be confirmed that there is the above-mentioned inter-axis distance having a large central illuminance as compared with a halogen bulb using a conventional filament body. Comparing Example 1 with Comparative Example 1, it was confirmed that the central illuminance of Example 1 was greater than that of Comparative Example 1.
- the central filament element is arranged on the optical axis of the reflector in the filament body and the peripheral filament element is arranged around it, the central illuminance is increased as the number of the peripheral filament elements is increased. Is considered to show a downward trend.
- both the simulation test and the actual measurement test are performed. went.
- Figure 10 shows the results of the simulation test.
- the gap between filament elements is 0.015 [mm]
- it is lower than that of a halogen bulb equipped with a conventional filament body, but the gap is 0.02 [mm] force.
- the central illuminance increases compared to the conventional one, and the central illuminance increases as the gap increases, and the gap between the filament elements is reduced from 0.1 l [mm] to 0 [0].
- the central illuminance is maximum between 2 [mm], and when the gap between filament elements is 0.2 [mm] or more, the central illuminance decreases as the gap increases, and therefore the filament element It was confirmed that the center illuminance was larger when the gap between 0.02 [mm] or more and 1.3 [mm] or less compared to halogen bulbs with conventional filament bodies.
- the gap between filament elements is as close to 0 [mm] as possible, the light emitted from each coil is blocked by each coil, and the central illuminance is considered to be lower than the conventional one.
- the gap between filament elements is 0.1 [mm] or more and 0.2 [mm] or less, the central illuminance is maximized when the filament exists in the central illuminance contribution region in the case of the gap.
- the gap exceeds 0.2 [mm] the proportion of filaments present in the central illuminance contribution region gradually decreases, and as a result, the gap is 1.3 [mm]. It is considered that the central illuminance is lower than the conventional one when the value exceeds.
- a well-known halogen bulb (not Matsushita Electric Industrial Co., Ltd., part number: JDR110V65WKNZ5E11, mirror outer diameter: 50 [mm], mirror aperture: 41 [mm])
- a comparative test was conducted using a filament body in which the filament body was replaced with a filament body that was useful for the comparative test.
- the filament body of the sample was set to a strand diameter of 0.053 [mm], a strand length of 463 [mm], and a pitch of 0.074 [mm].
- the filament element is formed by winding tungsten, and the filament element has a substantially track shape (oval shape) in a plane perpendicular to the axis, and the maximum width Wmax described above is l [mm].
- the minimum width Wmin is set to 0.5 [mm].
- Fig. 11 shows the results of the measurement test showing the relationship between the gap between the filament elements and the central illuminance
- Fig. 12 shows the result of the measurement test showing the relationship between the gap between the filament elements and the beam angle.
- the center illuminance cannot be measured because an arc discharge occurs between the filament elements and a short circuit occurs.
- the central illuminance increases compared to the conventional one.
- the central illuminance is the conventional one. It was lower than the one.
- the gap is less than 0.3 [mm]
- the reason force beam angle cannot be measured and the gap is 0.3 [mm].
- the measured beam angle is within the set beam angle standard (7.5 degrees or more and 12.5 degrees or less), and the gap is larger than 0.75 [mm] 1 Below 1 [mm]
- the measured beam angle is generally below the lower limit of the beam angle (15 degrees), commonly referred to as the medium angle type, and the gap is 1.
- the measured beam angle was within the range of beam angles commonly referred to as the medium angle type.
- the gap in order to satisfy the set beam angle standard (7.5 degrees or more and 12.5 degrees or less) under the constraints of the rated voltage, etc. It is desirable that the gap be set to 0.3 [mm] or more and 0.75 [mm] or less. If the specified standard (7.5 degrees or more and 12.5 degrees or less) is exceeded and the lower limit of the beam angle, generally called the medium angle type, is acceptable, the gap should be 0.3 [mm]. Above 1. It may be set below l [mm].
- Samples prepared in the evaluation test are as follows.
- FIG. 13 is a schematic configuration diagram schematically showing the coil arrangement in a plane perpendicular to the coil axis for each sample used in the evaluation test.
- FIG. 13 (a) is a schematic cross-sectional view of the filament body of Comparative Example 1 cut along a plane perpendicular to the axis of the secondary coil.
- the filament body of Comparative Example 1 is a so-called double-winding coil, and more specifically, a primary coil formed by winding a filament body in a spiral shape is further wound to form a secondary coil. A coil is formed.
- FIG. 13B is a cross-sectional view of the filament body of Comparative Example 2 cut along a plane perpendicular to the central axis.
- a substantially track (oval) coil filament element
- the X-axis straddles the maximum width of the two filament elements (coils)
- the Y-axis straddles the most significant part of the remaining two filament elements (coils).
- Four filament elements are arranged so that the point perpendicular to the Y axis and the optical axis of the reflector overlap.
- FIG. 13 (c) is a cross-sectional view of the filament body of Comparative Example 3 cut along a plane perpendicular to the central axis.
- the filament body of Comparative Example 3 has the filament body of Comparative Example 2 on the plane perpendicular to the coiling axis, with the point perpendicular to the X and Y axes as the axis.
- the optical axis of the reflector is placed in the minimum gap between adjacent coils (filament elements) arranged at an angle of a center line force of 5 [°] passing through the orthogonal point and straddling the maximum width.
- the central axis of the filament body is arranged so that the optical axis force also deviates.
- FIG. 13 (d) is a schematic cross-sectional view of the filament body of Comparative Example 4 cut along a plane perpendicular to the central axis.
- the filament body of Comparative Example 4 is provided with three filament elements (coils), and a substantially track (oval) coil (filament) in a plane perpendicular to the coil winding axis.
- Element) is arranged so as to form a right-angled isosceles triangle when connecting the central axes of the filament elements (coils), and the intersection of the isosceles overlaps the optical axis of the reflector.
- FIG. 13 (e) is a cross-sectional view of the filament body of Example 1 cut along a plane perpendicular to its central axis.
- the filament body of Example 1 is the same as the filament body shown in Embodiment 1, and in this filament body, two filament elements in a plane perpendicular to the coil winding axis.
- (Coil) 131, 132 The center line that spans the shortest width is arranged so as to overlap the Y axis, the Y axis and the X axis are orthogonal, and the orthogonal point and the optical axis of the reflecting mirror are arranged RU
- FIG. 13 (f) is a cross-sectional view of the filament body of Example 2 cut along a plane perpendicular to the central axis thereof.
- the filament body of Example 2 is the same as the filament body shown in Embodiment 2, and in this filament body, three filament elements in a plane perpendicular to the coil winding axis.
- (Coil) 131, 132, 133 A center line straddling the minimum width of each is arranged on the X axis, and a center line straddling the maximum width of the filament element 131 is arranged on the Y axis.
- the axes are orthogonal to each other, and the orthogonal point and the optical axis of the reflecting mirror are overlapped.
- FIG. 13 (g) is a cross-sectional view of the filament body of Example 3 cut along a plane perpendicular to the central axis thereof.
- the filament body of Example 3 is In the plane perpendicular to the coil winding axis, the ratio of the maximum width and the minimum width of the filament element (coil) is only different from that of the filament body of the second embodiment, and the other description is omitted.
- Each filament element constituting the filament body is formed so that the ratio of the maximum width to the minimum width is 3: 1 over a plane perpendicular to the coil winding axis.
- each of the above samples was turned on under the conditions described above, the central illuminance at the irradiation surface 1 [m] away from the light source was measured, and the illuminance ratio of each sample with reference to the central illuminance of Comparative Example 1 was obtained.
- the beam angles at the irradiated surfaces corresponding to the X-axis and Y-axis shown in Fig. 13 were measured, and the measurement results were evaluated for uniformity of light distribution on the irradiated surface.
- the evaluation criteria are as follows. That is, the beam angle on the X axis and Y axis is 7.5 degrees or more and 12.5 degrees or less, and the difference from the other beam angle with respect to the beam angle on one of the X axis and Y axis. When the difference was 10% or less of the narrower beam angle, it was determined that the uniformity of light distribution on the irradiated surface was good.
- Coil total length [m Light distribution average Coil contour Coil distribution Wi3 ⁇ 4ii [mm] Coy M ⁇ [mm] Coil pitch [mm] Center fi3 ⁇ 4 [lx] Beam angle] -mm
- the central illuminance of the sample of Comparative Example 3 is larger than that of the sample of Comparative Example 1 (increased by 17% in terms of the illuminance ratio)
- the Y-axis beam angular force exceeds 12.5 degrees.
- the light distribution is irregular on the irradiation surface that is larger than that of the X axis, and it is far from the concentric circles!
- the central illuminance is larger than that of Comparative Example 1 (increased by 28% in terms of illuminance ratio), and the X-axis beam angle and the Y-axis
- the beam angle is within the range of 7.5 degrees or more and 12.5 degrees or less, and a desired narrow beam angle can be obtained and the light distribution can be made uniform.
- the beam angle between the X-axis and the Y-axis which is not much different, falls within the range of 7.5 degrees to 12.5 degrees, and the desired narrow beam angle is obtained.
- the central illumination is larger than that of the first embodiment, and the light distribution can be made even more uniform.
- the X-axis beam angle and that of the Y-axis are not much different, and both beam angles are within the range of 7.5 degrees to 12.5 degrees, and the desired narrow beam The angle can be obtained, and the central illuminance is larger than that of the second embodiment, and the light distribution can be made more uniform.
- Example 2 was compared to the sample of Example 1.
- the maximum width is compared with the minimum width in the substantially track (oval) profile of each filament element in a plane perpendicular to the winding axis of the filament element as in the sample of Example 3.
- the length of each filament element in the winding axis direction can be shortened, thereby increasing the proportion of filament bodies present in the central illuminance contribution region, and therefore more The central illuminance can be increased.
- the maximum width is increased compared to the minimum width, the impact resistance, vibration resistance, and service life are likely to decrease. It is considered that it is more preferable to make it larger than.
- FIG. 14 is a schematic cross-sectional view of a halogen light bulb with a reflector in the third embodiment.
- the halogen lamp 137 with a reflector having a rated power of 65 [W] (rated voltage 110 [V]) according to the third embodiment of the present invention has a mirror diameter ⁇ force 3 ⁇ 4 5 [mm] to 100 [mm],
- Halogen bulb 139 bulb 142 central axis X in the longitudinal direction is the optical axis Y of reflector 138
- the reflecting mirror 138 is made of hard glass or quartz glass, and has an opening 143 for irradiating light at one end and a cylindrical neck 144 at the other end, and a spheroidal or rotating surface on the inner surface. A reflecting surface 145 of the rotating body that also has a paraboloidal force is formed.
- the opening 143 is provided with a front glass 146 and is fixed by a known fastener (not shown).
- a known adhesive (not shown) may be used instead of the stopper, or a stopper and an adhesive may be used in combination.
- the front glass 146 is not necessarily provided.
- a base 140 is provided on the outer side of the neck portion 144 so as to cover almost the entire neck portion 144, and is fixed with an adhesive 147.
- the sealing portion 148 of the halogen light bulb 139 is inserted into the neck portion 144, and is also fixed with an adhesive 147! RU
- Reflective surface 145 includes metal films such as aluminum and chromium, as well as silicon dioxide)),
- Titanium oxide TiO
- magnesium fluoride MgF
- zinc sulfide ZnS
- the reflective surface 145 may be faceted as necessary.
- the halogen light bulb 139 is composed of a bulb 142 having a force such as quartz glass or hard glass, and a light emitter 127 used in the halogen light bulb 114 in the lighting device 110 according to the thirteenth embodiment of the present invention. It has. That is, the halogen bulb 139 has the same configuration as the halogen bulb 114 except that the shape of the bulb 142 is different. Therefore, the details of the configuration of the halogen bulb 139 will be described mainly regarding the differences from the configuration of the halogen bulb 114.
- the other end portion of the internal lead wire 128 is connected to one end portion of the external lead wire 130 via a metal foil 129 made of molybdenum that is sealed with a sealing portion 148.
- the other end of the external lead wire 130 is led to the outside of the valve 142 and is electrically connected to the terminal portions 141a and 14 lb of the base 140, respectively.
- the bulb 142 includes a tip-off portion 149 which is a residual mark of sealing cut, a light emitting portion 150 having a substantially cylindrical shape in which one end portion (an end portion on the tip-off portion 148 side) is tapered, and a publicly known portion
- the sealing portions 148 formed by the pinch seal method are formed so as to be successively connected.
- the visible light transmitting infrared reflecting film is not formed on the outer surface of the nozzle 142, a visible light transmitting infrared reflecting film may be formed on the outer surface of the light emitting unit 150 or the like as necessary.
- the shape of the bulb 142 is such that the tip-off portion 149, the substantially cylindrical light emitting portion 150 whose one end is tapered, and the sealing portion 148 are successively formed.
- a chip-off part may not be present in some cases
- a light-emitting part having a substantially spheroid shape, a reduced diameter part, a cylindrical part, and a sealing part are successively formed, a tip-off part (may be omitted in some cases), a substantially spheroid A light emitting part having a body shape, a bulb having a reduced diameter part and a sealing part successively connected, or a chip-off part (may not be present in some cases), a light emitting part and a sealing part having a substantially spheroidal shape.
- Various known valve shapes such as
- the luminous body 127 has a plurality of, for example, four coils 131, 132, 133, 134 arranged in parallel. These four coils 131, 132, 133, 134 are electrically connected in series. Further, the light emitter 127 is located at a position including the focal point F of the reflecting mirror 138 with respect to the reflecting mirror 138. In other words, when the illuminant 127 is formed as a single column (the portion indicated by the broken line in FIGS. 4 and 5) with the four coils 131, 132, 133, 134 taken together, the focal point F is the column. Located inside or on the surface.
- the focal point F is in or on the coil 131, 132, 133, 134, or on each coil (131, 132), (131, 133), (131, 134), (1 32, 133), (132, 134), (133, 134)
- the center point of the illuminant 127 is almost located on the focal point F of the reflecting mirror 138.
- the point F on the surface of the light emitter may be located on the focal point F as shown in FIG.
- the coils 131, 132, 133, and 134 are integrated, and the light emitter 127 is schematically shown as a single column!
- the end faces of the coins 131, 132, 133, and 134 are substantially on the same plane. Also, the coinet length L, force S of coinores 131, 132, 133, 134 are all the same s4
- the end face on the opposite side of the sealing part 120 is They are preferably located on substantially the same plane.
- adjacent coils are used to obtain a compact luminous body 127. Be as close as possible. If the coins (131, 132), (131, 134), (132, 133), (1 32, 134), (133, 134) are too close together, When vibration occurs in the light bulb 114, adjacent coils (131, 132), (131, 134), (132, 133), (132, 1 34), (133, 134) come into contact with each other due to the vibration. May cause a short circuit.
- the coil (131, 132), (131, 134), (132, 133), (132, 134), (133, 134) force most adjacent parts are coil 131, Since the temperature of 132, 133, and 134 becomes high, there is a possibility that the tungsten wire in the tungsten wire will evaporate rapidly and have a short life. Therefore, even when vibration is applied to the halogen bulb 114 during lighting, the adjacent coils (131, 132), (131, 134), (132, 133), (132, 134), (133, 134) force In order to prevent insects from short-circuiting and to shorten the life, it is preferable to set the thickness to 0.2 [mm] or more.
- the pitch can be made sufficiently smaller than the pitch of the multi-winding coil, and secondly, the single-winding coil is divided into a plurality of coils, and the coil 131, 132, 133, 134 (see FIGS. 4 and 5) so as to have longitudinal forces also outline shape seen a shape different from a substantially circular shape, Runode, the optical axis Y 7 direction as emitter 127 On the other hand, it can be shortened sufficiently. As a result, it is possible to increase the proportion of the luminous body 127 existing in the region contributing to the central illuminance in the reflecting mirror 138, and to improve the light collection efficiency.
- the central illuminance can be improved in this way, it is not necessary to improve the central illuminance by forming a visible light transmitting infrared reflective film as in the conventional halogen bulb with a reflector.
- a conventional halogen bulb with a reflecting mirror using a double-wound coil in which a visible light transmitting infrared reflecting film is formed on the outer surface of the bulb, can obtain a central illuminance substantially the same as the central illuminance.
- the cost of the visible light transmitting infrared reflective film itself and the cost for the process can be reduced, and the process for forming the film can be omitted, so that the production efficiency can be greatly improved. .
- the halogen lamp 137 with a reflector according to the third embodiment of the present invention is the first embodiment of the present invention shown in FIG. It has the same configuration as that of the lighting device 110 according to the first embodiment of the present invention except that it is attached to a lighting fixture 113 (excluding the reflecting mirror 112) of a certain lighting device 110.
- the pitch can be made sufficiently smaller than the pitch of the multi-winding coil, and secondly, the single-winding coil is divided into a plurality of coils, and the force is also reduced to the coils 131, 132, Since the outer shape of 133, 13 4 (see Fig. 4 and 5) viewed from the longitudinal direction is different from the substantially circular shape, the light emitter 127 (see Fig. 1 etc.) is in the direction of the optical axis ⁇ Short enough for
- the halogen lamp 1 with a reflecting mirror having a rated power of 65 [W] (rated voltage 110 [V]) according to the first embodiment of the present invention is a concave reflecting mirror 2 And a halogen light bulb 3 disposed inside the reflecting mirror 2 and, for example, an E-shaped base 4 attached to the end of the reflecting mirror 2.
- the mirror diameter ⁇ of the reflecting mirror 2 is set to 50 [mm] in the present embodiment as long as it is 35 [mm] or more and 100 [mm] or less.
- the central axis X in the longitudinal direction of the halogen bulb 3 substantially coincides with the optical axis Y of the reflecting mirror 2.
- the reflecting mirror 2 is made of hard glass or quartz glass, and has an opening 5 for irradiating light at one end and a cylindrical neck 6 at the other end, and a spheroidal surface or paraboloid on the inner surface.
- a reflecting surface 7 made of a surface or the like is formed. Form facets on the reflective surface 7 as required.
- a front glass 8 is provided in the opening 5, and is fixed by a known fastener (not shown), a known adhesive (not shown), or a combination thereof.
- the front glass 8 is not necessarily provided.
- a base 4 is provided on the outer side of the neck portion 6 so as to cover almost half of the neck portion 6, and is fixed through an adhesive 9.
- a sealing portion 12 of a halogen bulb 3 to be described later is inserted into the neck portion 6, and is similarly fixed via an adhesive 9.
- Multilayer interference consisting of titanium dioxide (TiO 2), magnesium fluoride (MgF), zinc sulfate (ZnS), etc.
- a film is formed.
- the halogen light bulb 3 has a chip-off portion 10 that is a residue of sealing cut, a substantially cylindrical light emitting portion 11, and a sealing portion 12 formed by a known pinch seal method, which are successively connected to each other.
- a bulb 13 made of quartz glass, hard glass, etc., and an assembly 18 in which a filament body 14 which is a light emitter, an internal lead wire 15, a metal foil 16 and an external lead wire 17 are sequentially connected.
- a visible light transmitting infrared reflecting film may be formed on the outer surface of the bulb 13 as necessary.
- the above-described filament body 14 is disposed, and a predetermined amount of each of a halogen substance and a rare gas is enclosed.
- one end of an internal lead wire 15 made of tungsten is connected to each end of the filament body 14.
- the other end portion of the internal lead wire 15 is connected to one end portion of the external lead wire 17 through a molybdenum metal foil 16 sealed in the sealing portion 12.
- the other end portion of the external lead wire 17 is led out of the valve 13 and is electrically connected to the terminal portions 4a and 4b of the base 4 respectively.
- the filament body 14 has a plurality of single-winding coil forces extending linearly as shown in FIGS. 16 and 17, each of which is made of, for example, tungsten, and is electrically connected in series. It consists of one central filament element 19 and three peripheral filament elements 20, 21, 2 and 2.
- the wire diameter of the tungsten wire constituting this single-wound coil is from 0.005 [mm] to 0.100 [mm], for example, 0.050 [mm].
- FIGS. 16 and 17 the central filament element 19 and the peripheral filament elements 20, 21, and 22 are schematically depicted as cylindrical bodies, respectively.
- the central filament element 19 has a central axis al in the longitudinal direction substantially positioned on the optical axis Y of the reflector 2.
- the peripheral filament elements 20, 21, 22 are arranged around the central filament element 19 so that the longitudinal central axes bl, cl, dl are substantially parallel to the longitudinal central axis al of the central filament element 19. ing.
- these three peripheral filament elements 20, 21, and 22 are arranged with respect to the axes bl, cl, dl and the longitudinal center axis al of the center filament element 19 in the longitudinal direction, as shown in FIG. Arranged so as to form a substantially equilateral triangle with the point on the central axis al in the longitudinal direction of the central filament element 19 as the center of gravity ("centroid") Has been. That is, are all the distances D between the central filament element 19 and each peripheral filament element 20, 21, 22 substantially equal?
- One peripheral filament element 20 (21 or 22) and two adjacent peripheral elements The distance D between the lamento elements 21, 22 (20, 22 or 20, 21) must be approximately equal.
- substantially located here means that the center axis al is ideally perfectly located on the optical axis Y of the reflecting mirror 2, but the position in the manufacturing process is ideal. This means that the center axis al may deviate from the optical axis Y of the reflector 2 due to variations in alignment accuracy.
- substantially parallel and substantially equilateral triangle are also perfectly parallel due to variations in assembly accuracy in the assembly process of the filament body 14, and it is difficult to form a perfect equilateral triangle. In some cases, the positional relationship and shape may deviate from a perfect equilateral triangle. The same applies to “distance D and distance D force ⁇ approximately equal”.
- the center filament element 19 includes a center point A that includes the position of the focal point F of the rotating body forming the reflecting surface 7 and is on the center axis al of the center filament element 19 as shown in FIG. Is arranged on the opposite side of the opening 5 from the position of the focal point F.
- the peripheral filament elements 20, 21, and 22 are in accordance with this, and each of the peripheral filament elements 20, 21, and 22 is point F, F, and F in the reflector 2 described later (in FIG. , F and the center points B, C, D (in Fig.
- the point F 1, F 2, F includes the position of the focal point F of the rotating body that forms the reflecting surface 7, then bl cl dl 1 also intersects the plane Q perpendicular to the optical axis Y of the reflector 2 And the intersections with the central axes bl, cl, and dl.
- the distance between the focal point F and the center point A is 2.35 [mm]
- the distance between the points F 1, F 2, F and the center points B 1, C 3, D is 1. 21 [mm] ].
- the ends of the peripheral filament elements 20, 21, and 22 on the side of the opening 5 are positioned in substantially the same plane.
- the illuminance on the irradiation surface irradiated by each peripheral filament element 20, 21, 22 can be made uniform, and a uniform light distribution curve can be obtained.
- Filament elements 2 0, 21, and 22 are contained within one cylinder, and this cylinder is virtually connected to the center filament element.
- Element 19 and peripheral filament elements 20, 21 and 22 can be regarded as one integrated filament.
- the coil length of the central filament element 19 and the peripheral filament elements 20, 21, and 22 is L [mm] as the coil length of the central filament element 19 and the coils of the peripheral filament elements 20, 21, and 22.
- the coil lengths L of the peripheral filament elements 20, 21, 22 are substantially equal.
- substantially equal means that the coil manufacturing process is the same as above.
- each coil length L varies due to the above variation.
- the length of the tungsten wire constituting the coil of the filament body 14 is determined according to the rated power of the halogen bulb 3.
- the tungsten wire length used for the halogen bulb 3 with a rated power of 65 [W] is, for example, 420 [mm] to 480 [mm]
- the tungsten wire used for the halogen bulb 3 with a rated power of 20 [W] is tungsten.
- the length of the tungsten wire of the halogen bulb 3 having a rated power of 250 [mm] to 300 [mm] and a rated power of 100 [W] is 540 [mm] to 620 [mm]. Therefore, each coil length L,
- L is the coil pitch (interval between adjacent coil parts) p and the maximum outer diameter R of the coil.
- S1 1 Can be adjusted by changing it accordingly.
- the pitch p of the single winding coil is different from that of the central filament element 19 and the peripheral filament elements 20, 21, 22! 0! 05 [mn! ] To 0.07 [mm].
- the maximum outer diameter R of the single-winding coil can be any of the central filament element 19 and the peripheral filament elements 20, 21 and 22.
- Is also set in the range of 0.5 [mm] to l.2 [mm].
- the distance D between the central filament element 19 and each peripheral filament element 20, 21, 22 is 0. l [mn! ] To 2.2 [mm] is preferable.
- the density of the filament body 14 in the central illuminance contribution region can be made larger than that of the conventional halogen bulb, and the central illuminance can be made extremely high.
- Arc discharge occurs between the central filament element 19 and the peripheral filament elements 20, 21 and 22, and the arc discharge causes It is possible to prevent the element 20, 21, 22 from being disconnected.
- the distance D is 0.1 [
- a double-winding coil and a triple-winding coil can be used in addition to the single-winding coil.
- the ability to reduce the pitch p is smaller than that of a double-winding coil or triple winding coil, and the density of the filament 14 in the central illumination contribution region can be increased. It is preferable to use a wound coil.
- the coil length of the central filament element 19 is L [mm]
- the peripheral filament elements 20, 21 are L [mm]
- the coil length L of the central filament element 19 and the coil length L of the peripheral filament elements 20, 21, and 22 are identical to the halogen lamp 1 with a reflector having the rated power of 65 [W].
- the central filament element 19 and the peripheral filament elements 20, 21, 22 ⁇ are also formed by the single winding coinole force, and the pitch p force ⁇ ).
- the one with 07 [mm] and maximum outer diameter R of 0.65 [mm] was used.
- the distance D is 1.5 [mm]
- Beam angle indicates the average value of five samples. Beam angle is now on sale The evaluation standard was 10 degrees (allowable range: 7.5 degrees to 12.5 degrees), which is the mainstream.
- center illuminance indicates an average value of five samples.
- a commercially available halogen bulb with a reflector with a rated power of 65 [W] (rated voltage 110 [V]) with a beam angle of 10 degrees (hereinafter referred to as “conventional product”) has a central illuminance of, for example, 6500 [ cd]. Therefore, as an evaluation standard, considering the demand from the market, etc., it is about 10% higher than the conventional product's central illuminance (6500 [lx], 6500 [cd] in the central luminous intensity conversion), that is, 7200 [lx] The evaluation standard was 7200 [cd] or more in terms of central luminous intensity.
- the beam angle is 7.5 degrees, which satisfies the above-mentioned evaluation criteria, but the central illuminance does not satisfy the above-mentioned evaluation criteria.
- the reasons for this result are as follows. L / L ⁇ 0. 9 is satisfied,
- the coil length L of the central filament element 19 is the coil length of the peripheral filament elements 20, 21, 22
- the center illumination contribution region force in the inner part increases in part, and the relative length of the coil length L of the peripheral filament elements 20, 21 and 22 with respect to the coil length L of the central filament element 19
- the core length L of the central filament element 19 is equal to that of the peripheral filament elements 20, 21, 22
- the coil length of the central filament element 19 is L [mm]
- the peripheral filament element 2 is L [mm]
- the central filament element 19 and the peripheral fiber In order to obtain a desired beam angle (narrow angle) and achieve good light distribution characteristics while increasing the central illuminance by the contribution of both lamento elements 20, 21, and 22, 0.2 ⁇ L / L ⁇ 0.9
- the central filament element 19 and the peripheral filament elements 20, 21, and 22 contribute to the center. While increasing the illuminance, the spread of the irradiated light by the peripheral filament elements 20, 21, and 22 can be suppressed, and a good light distribution characteristic can be achieved by obtaining a narrow beam angle.
- an illumination device is used as general illumination such as a spotlight, and is rated as the fifth embodiment of the present invention described above.
- a halogen bulb 1 with a reflector of electric power 65 [W] has a structure attached to various known lighting fixtures (not shown).
- an illuminating device capable of realizing good light distribution characteristics with a narrow beam angle with a high central illuminance. Can be provided.
- an illuminating device is used as a general illumination such as a spotlight, and is rated as the fifth embodiment of the present invention described above.
- a halogen bulb 1 with a reflector of electric power 65 [W] used in the halogen bulb 1 with a reflector of electric power 65 [W], and various known caps that can be attached to the end of the bulb 12 of the bulb, and the bulb 12 of the bulb 3
- a halogen light bulb having a configuration including a shaped base (not shown) is attached to a reflecting mirror part provided in the lighting device.
- the reflecting mirror part has a reflecting surface that is a spheroidal surface or a rotating paraboloidal surface and is fixed to the lighting fixture and cannot be replaced. Even if it can be replaced.
- the halogen bulb that works on the seventh embodiment of the present invention
- the central illumination is increased by the contribution of both the central filament element 19 and the peripheral filament elements 20, 21, 22, the peripheral
- the spread of irradiation light by the filament elements 20, 21, and 22 can be suppressed, and a narrow light beam angle can be obtained and a good light distribution characteristic can be realized.
- an illumination device capable of realizing good light distribution characteristics with a narrow beam angle with a high central illuminance is provided. Togashi.
- the four peripheral filament elements are substantially square.
- five peripheral filament elements are arranged so as to form a substantially regular pentagon
- six peripheral filament elements are arranged so as to form a substantially regular hexagon, or more Even in this case, the same effects as described above can be obtained.
- the halogen light bulb 3 having a rated power of 65 [W] has been described.
- the present invention is not limited to this.
- the rated power of 20 [W] to 150 [W] is used. Even when a halogen bulb is used, the same effect as described above can be obtained.
- the present invention is not limited to this, and is not limited to this, there is a case where there is a chip-off part (there may be no case), a glass bulb in which a substantially spherical or substantially spheroidal light-emitting part and a sealing part are sequentially connected, and a chip-off part.
- Part may be absent in some cases
- a light bulb with a substantially spherical or substantially spheroid shape a glass bulb formed by successively connecting a reduced diameter part and a sealing part, or a chip-off part (not in some cases)
- glass bulbs of various known shapes such as glass bulbs in which a light emitting portion, a reduced diameter portion, a cylindrical portion, and a sealing portion having a substantially spherical or substantially spheroidal shape are successively connected are used. It is possible to obtain the same effect as described above even if.
- a halogen bulb 31 with a rated power of 65 [W] (rated voltage 110 [V]) includes a bulb 32 having a quartz glass or hard glass equivalent force,
- a bulb 32 having a quartz glass or hard glass equivalent force For example, an E-shaped base 34 fixed by a known adhesive 33 is provided on the sealing portion 40 side of the valve 32 described later.
- the bulb 32 includes a tip-off portion 36, a substantially spheroidal light emitting portion 37, a reduced diameter portion 38, a substantially cylindrical tube portion 39, and a known pinch seal method.
- the formed sealing portions 40 are formed so as to be successively connected.
- a visible light transmitting infrared reflecting film 41 is formed on the outer surfaces of the tip-off portion 36, the light emitting portion 37, and the reduced diameter portion 38 of the outer surface of the bulb.
- the "substantially spheroid shape" referred to here is not only in the case of a perfect spheroid shape, but the complete spheroid shape force is shifted due to variations in processing of the glass. It means that it also includes the case.
- a filament body 42 is disposed in the light emitting section 37, and a predetermined amount of halogen substance and rare gas, or halogen substance, rare gas, and nitrogen gas are sealed therein.
- the other end portion of the internal lead wire 43 is connected to one end portion of the external lead wire 45 through a molybdenum metal foil 44 sealed in the sealing portion 40.
- the other end of the external lead wire 45 is led out of the valve 32 and is electrically connected to the terminal portions 35a and 35b of the base 34, respectively.
- the filament body 42 has three filament elements 46, 47, 48 as shown in FIG. 22 and FIG. These filament elements 46, 47, and 48 are all made of tungsten, and have a cylindrical single-winding coil force extending linearly, and each is electrically connected in series.
- the wire diameter of the tungsten wire constituting this single-winding coil is from 0.005 [mm] to 0.100 [mm], for example, 0.050 [mm].
- filament elements 46, 47, and 48 are schematically shown as circles. It is drawn as a pillar.
- these three filament elements 46, 47, 48 have their longitudinal central axes b2, c2, d2 substantially parallel to the longitudinal central axis X of the bulb 32, and Ba
- Lub 32 is forested to surround the central axis X in the longitudinal direction.
- the distance D between the element 46, 47, 48 and the central axis X in the longitudinal direction of the valve 32 is also substantially equal.
- Such a filament body 42 is accommodated in one cylindrical body in which each filament element has an outer diameter (maximum outer diameter) r [mm], and this cylindrical body is virtually connected to each filament element 46, 47 and 48 can be regarded as a single filament.
- the maximum inner diameter of the portion of the needle 32 where the filament body 42 is located is R (see Fig. 21) [m
- the maximum outer diameter [mm] of the filament body 42 regarded as one filament it is set so as to satisfy the relation of 0.25 ⁇ r / R ⁇ 0.775 for the reason described later.
- At least one of the maximum outer diameter r and coil length L must be the same size so that the illuminance irradiated onto the irradiated surface from the filament elements 46, 47, 48 is uniform.
- the ends of the filament elements 46, 47, 48 are preferably located in substantially the same plane. Thereby, the illuminance on the irradiation surface irradiated by each filament element 4 6, 47, 48 is made uniform, and a uniform light distribution curve can be obtained.
- the maximum outer diameter r is two adjacent to the maximum outer diameter r of each filament element 46, 47, 48.
- the length of the tandane wire constituting the coil of the filament body 42 is determined according to the rated power of the halogen bulb.
- the length of a tungsten wire used for a halogen bulb with a rated power of 65 [W] is, for example, 420 [mm] to 480 [mm], and that of a tungsten wire used for a halogen bulb with a rated power of 20 [W].
- the length of tungsten wire is 540 [mm] to 620 [mm] although the length is 250 [mm] to 300 [mm]. Therefore, the maximum outer diameter r of each filament element 46, 47, 48 is equal to that of each filament element 46, 47, 48.
- the coils constituting the filament elements 46, 47, 48 in addition to the single winding coil, a double winding coil or a triple winding coil can be used.
- the maximum inner diameter of the portion of the bulb 32 where the filament body 42 is located is R (mm
- the maximum inner diameter R of the bulb 32 where the filament body 42 is located is kept constant at 12 mm, and the filament body Change the maximum outer diameter r [mm] of 42 and the distance D between two adjacent filament elements as appropriate.
- the denominator indicates the total number of samples
- the numerator indicates the number of the broken filament bodies 42 out of the total number of samples.
- blacken occurred on the inner surface of the valve 32 of the total number of samples in which the denominator was broken and the number of samples in which the denominator was not broken. The number of items is shown. However, the blackening is judged as “having black spots” when it can be visually confirmed that black colored substances are attached to the inner surface of the valve 32. This black colored material is attached by evaporation of tungsten, which is a constituent material of the filament body 42, during lighting.
- the lighting method was repeated for one cycle of lighting for 5.5 hours and turning off for 0.5 hours.
- the “lighting elapsed time” is an accumulated time of the lighting time.
- the filament elements 46, 47, and 48 are composed of single-turn coils with the same shape and dimensions, and the pitch p is 0.05 [mm] to 0.07 [mm], the maximum The outer diameter r is 0.65 [mm] and the coil length L is 5.4 [mm].
- the convection layer generated between the bulb 32 and the filament body 42 becomes extremely thin, resulting in a slower moving speed of tungsten evaporated during lighting, It is thought that this is because the amount of tungsten evaporated significantly decreased accordingly.
- the bulb 32 is not too close to the filament body 42, the temperature of the nozzle 32 will not be excessively high during lighting, and therefore the temperature of the filament body 42 will not rise abnormally. This is thought to be due to power.
- the maximum inner diameter of the portion of the valve 32 where the filament body 42 is located is R.
- the convection layer generated between the nozzle 32 and the filament body 42 can be made extremely thin, the amount of evaporation of tungsten, which is a constituent material of the filament body 42, can be significantly reduced.
- the filament body It is possible to prevent the tungsten wire of the coil constituting 42 from being thinned and disconnected, and to extend the service life.
- the gap between the bulb 32 and the filament body 42 is kept moderate, both the bulb 32 and the filament body 42 can be prevented from becoming abnormally hot during lighting. It is possible to prevent the lev 32 from being damaged or the inner surface of the bulb 32 from becoming black due to excessive evaporation of tungsten, which is a constituent material of the filament body 42.
- the force described in the case where the three filament elements 46, 47, and 48 are arranged so as to form a substantially equilateral triangle is used.
- the same effects as described above can be obtained.
- another filament element in the space surrounded by each filament element for example, the same shape, the same size, or a different shape, a different size of the filament element, may be Even when a filament body arranged so as to be substantially positioned on the central axis X of the direction can be used, the same effect as described above can be obtained.
- the tip 32 of the bulb 32, the light-emitting part 37 having a substantially spheroidal shape, the reduced diameter part 38, the cylindrical part 39, and the sealing part 40 are sequentially provided as the shape of the bulb 32.
- the force described in the case of using a continuously formed one is not limited to this, and the chip-off part (there may be no case in some cases), the light-emitting part having a substantially spheroidal shape, the reduced diameter part, and the sealing part are sequentially provided.
- a bulb formed continuously, a tip-off portion may be absent in some cases), a bulb formed by sequentially connecting a light-emitting portion and a sealing portion having a substantially spheroidal shape, or a tip-off portion (in some cases).
- a well-known various shaped valve such as a bulb in which a substantially cylindrical light emitting part and a sealing part are successively formed is used.
- a substantially spheroid shape instead of the above-mentioned substantially spheroid shape as the shape of the light emitting portion, a substantially spherical shape or a substantially compound ellipsoid shape It can be used.
- the outer shape of the cross section cut perpendicularly to the central axes b2, c2, d2 in the longitudinal direction is a circle so that the tungsten wire has a cylindrical shape.
- the case of using filament elements 46, 47, and 48 that also have a single-winding coil force wound as described is described.
- the present invention is not particularly limited to the outer shape.
- the outer shape of the cross section cut perpendicular to the central axes b2, c2, d2 in the longitudinal direction is an ellipse. Even when the filament elements 49, 50, 51 having coil force wound so as to draw are used, the same effect as described above can be obtained.
- each filament element 49, 50, 51 is centered on a point on the central axis X in the longitudinal direction of the valve 32.
- the diameter of the circle circumscribing each filament element 49, 50, 51 can be accommodated in a cylindrical body having a maximum outer diameter r.
- the maximum outer diameter r can be determined in this way also in the filament body 52 composed of the filament elements 49, 50, 51 having the outer shape as shown in FIG.
- the halogen bulb 53 having a rated power of 65 [W] (rated voltage 110 [V]) according to the ninth embodiment of the present invention is mainly used for general illumination such as a spotlight.
- the bulb 56 is incorporated in the reflector 55 of the known lighting device 54 used for the purpose, and has a strength such as stone glass or hard glass, and a sealing portion 66 described later of the nove 56.
- an E-shaped base (not shown) fixed by a known adhesive (not shown) is provided on the side.
- the longitudinal axis X of the bulb 56 of the halogen bulb 53 and the optical axis Y of the reflector 55 are:
- the illuminating device 54 has a cylindrical shape in which a light receiving member (not shown) to which light is irradiated from an opening 57 on the front surface and a cap of the halogen bulb 53 is attached is housed. Lighting fixture 58.
- the reflector 55 has a front glass 60 attached to the opening 59 on the front surface, and a reflecting surface 61 of a rotating body having a spheroidal surface or a paraboloidal surface is formed on the inner surface! .
- the reflective surface 61 may be faceted as necessary.
- the nozzle 56 is formed by a chip-off portion 62, a substantially spheroidal light-emitting portion 63, a reduced-diameter portion 64, a substantially cylindrical tube portion 65, and a known pinch seal method.
- the sealed portions 66 are formed so as to be successively connected.
- a visible light transmitting infrared reflecting film 67 is formed on the outer surfaces of the light emitting portion 63 and the reduced diameter portion 64.
- a filament body 68 is disposed in the light emitting portion 63, and a predetermined amount of halogen substance and rare gas, or halogen substance, rare gas, and nitrogen gas are sealed therein.
- the other end of the internal lead wire 69 is connected to one end of an external lead wire (not shown) via a molybdenum metal foil (not shown) sealed in the sealing portion 66. .
- the other end portion of the external lead wire is led out of the valve 56 and is electrically connected to the end portion of the base.
- the filament body 68 is also configured with one central filament element 70 and three peripheral filament elements 71, 72, 73 and force.
- the central filament element 70 and the peripheral filament elements 71, 72, 73 are all made of tungsten, and have a single-turn coil force extending linearly in a cylindrical shape, and are electrically connected in series. .
- the wire diameter of the tungsten wire constituting this single-winding coil is from 0.005 [mm] to 0.100 [mm], for example, 0.050 [mm].
- FIG. 26 and FIG. 27 the central filament element 70 and the peripheral filament elements 71, 72, 73 are schematically depicted as cylindrical bodies, respectively.
- the central filament element 70 has its central axis a3 in the longitudinal direction positioned substantially on the optical axis Y of the reflector part 55.
- the central filament element 70 is arranged such that the central axis a3 in the longitudinal direction is substantially positioned on the central axis X in the longitudinal direction of the bulb 56.
- halogen bulb 5 is arranged such that the central axis a3 in the longitudinal direction is substantially positioned on the central axis X in the longitudinal direction of the bulb 56.
- the central axis X in the longitudinal direction of the bulb 56 is the reflector.
- the longitudinal direction of the central filament element 70 is substantially located on the optical axis Y of the portion 55.
- the central axis a3 of the reflector is positioned approximately on the optical axis ⁇ of the reflector 55.
- substantially located here means that the central axis a3 is ideally perfectly located on the central axis X in the longitudinal direction of the valve 56, but the position in the manufacturing process is preferred.
- center axis a3 may be off the optical axis Y, depending on the type of lighting device to be installed.
- peripheral filament elements 71, 72, 73 are arranged around the central filament element 70 so that the longitudinal central axes b3, c3, d3 are substantially parallel to the longitudinal central axis a3 of the central filament element 70.
- these three peripheral filament elements 71, 72, 73 are perpendicular to the respective longitudinal central axes b3, c3, d3 and the longitudinal central axis a3 of the central filament element 70, as shown in FIG. Connect the intersections where any plane P intersects
- the central filament elements are arranged so as to form a substantially equilateral triangle having a point on the central axis a3 in the longitudinal direction as a center of gravity (centroid). That is, the distance D between the central filament element 70 and each of the peripheral filament elements 71, 72, 73 are all substantially equal and have a certain circumference.
- the distance D between the side filament element 71 (72 or 73) and the two neighboring filament elements 72, 73 (71, 73 or 71, 72) adjacent thereto is substantially equal.
- the "substantially parallel” and “substantially equilateral triangle” referred to here are completely parallel due to variations in assembly accuracy in the assembly process of the filament body 68 and the assembly process of the valve 56 and the filament body 68. It is difficult to form a regular equilateral triangle, and there are cases where the positional relationship deviates from perfect parallelism and a shape deviated from a perfect equilateral triangle, and this also includes that case. The same is true for distance D and distance D force ⁇ substantially equal.
- the center filament element 70 includes the position of the focal point F of the rotating body forming the reflecting surface 61 as shown in FIG. 26, and the center point on the center axis a3 of the center filament element 70
- peripheral filament elements 71, 72, 73 Each of the peripheral filament elements 71, 72, 73 includes the positions of points F 1, F 2, F (described later in FIG. 26, only points F 1, F) in the reflector 55, and Each lap b3 c3 d3 b3 c3
- It includes the position of the focal point F of the rotating body that is formed and is perpendicular to the optical axis Y of the reflector 55.
- peripheral filament elements 71, 72, 73 are connected to the center points A and
- central illuminance contribution region The density of the filament body 68 within (hereinafter simply referred to as “central illuminance contribution region”) can be increased, and the central illuminance can be increased.
- Such a filament body 68 is accommodated in one cylindrical body having a central filament element 70 and peripheral filament elements 7 1, 72, 73 having an outer diameter (maximum outer diameter) r [mm].
- the body can be regarded as a single filament virtually combining the central filament element 70 and the peripheral filament elements 71, 72, 73.
- the maximum inner diameter of the portion of the bulb 56 where the filament body 68 is located is R (see FIG. 25) [mm], 1
- the gap between the body 68 and the body 68 is reasonably small, the convection layer generated between the valve 56 and the filament body 68 can be made extremely thin. As a result, the constituent material of the filament body 68 Therefore, the moving speed of tungsten evaporated during lighting can be reduced, and the amount of tungsten evaporation can be significantly reduced accordingly, so that the tungsten wire of the coil constituting the filament body 68 is evaporated by the tungsten. Therefore, it is possible to prevent the wire from being thinned or disconnected, and to extend the service life. Moreover, since the bulb 56 is not too close to the filament body 68, the temperature of the filament body 68 will not rise excessively with the abnormal rise in the temperature of the bulb 56 during lighting!
- the temperature of the bulb 56 becomes very high.
- the temperature of the filament body 68 is excessively increased by the radiant heat from the bulb 56 that has become high temperature, and the evaporation of tandasten, which is a constituent material of the filament body 68, is promoted. It adheres to the inner surface of the glass and causes blackening. In some cases, blackening of the inner surface of the valve 56 causes the temperature of the valve 56 to become even higher, and the valve 56 may be damaged.
- the maximum outer diameter r is the maximum of the central filament element 70 and the peripheral filament elements 71, 72, 73.
- the distance D between the large outer diameter r and the two adjacent filament elements (or the distance D above) is appropriately set.
- the maximum outer diameter r of the central filament element 70 and the peripheral filament elements 71, 72, 73 is the coil length L of the central filament element 70.
- 73 may be the same length. In that case, for example, rated power 6 For 5 [W] halogen bulbs, coil length L and coil length L are 3.0 [mm] to 5
- each peripheral filament element 71, 72, 73 is the same, but the coil length L and the coil length L are
- each peripheral filament element 71, 72, 73 is also a stator 71, 72, 73 .
- S3 S3 may be different.
- the coil length L is set within the range of 3.5 [mm] to 15.0 [mm], and the coil length L
- C3 and S3 are set to be different from each other within the range of 1.5 [mm] to 4.5 [mm].
- the pitch of the single-winding coil is different from that of the central filament element 70 and the peripheral filament elements 71, 72, 73. ] To 0.07 [mm].
- At least one of the maximum outer diameter r and the coil length L should be the same.
- all dimensions are preferably the same. However, its maximum outer diameter r and coil length L depend on the manufacturing process of the peripheral filament elements 71, 72, 73.
- peripheral filament elements 71, 72, 73 Due to processing variations, there may be variations between individual peripheral filament elements 71, 72, 73.
- the ends on the opening 59 side are preferably located in substantially the same plane.
- the illuminance on the irradiated surface irradiated by each filament element 70, 71, 72, 73 is made uniform, and a uniform light distribution curve can be obtained.
- the coil length L [mm] of 1, 72, 73 is required for the central filament element 70 and the peripheral filament
- the desired beam angle (narrow To obtain good light distribution characteristics with an angle, for example 10 degrees, whose tolerance is 7.5 degrees to 12.5 degrees, 0.2 ⁇ L / L ⁇ 0.9 It is preferable to satisfy
- each peripheral filament element 71, 72, 73 is respectively
- the coil length L of the peripheral filament elements 71, 72, 73 which greatly contributes to the increase and decrease of the illuminance in the peripheral area of the central part on the irradiated surface, can be shortened appropriately.
- the coil length L of the central filament element 70 that greatly contributes to the increase or decrease of the illuminance (center illuminance) of the central portion on the irradiation surface can be made as much as possible.
- the peripheral filament elements 71, 72, 73 can contribute to the increase in illuminance to the central portion of the irradiated surface, while reducing the illuminance in the peripheral region of the central portion of the irradiated surface as much as possible. .
- the coil length L of the central filament element 70 is increased by increasing the coil length L of the central filament element 70,
- the relative length of the thread length L becomes too small and the peripheral filament elements 71, 72, 73
- the coil length L of the central filament element 70 is equal to that of the peripheral filament elements 71, 72, 73.
- the coil length L of the peripheral filament elements 71, 72, 73 is less than / L ⁇
- the peripheral filament elements 71, 72, 73 increase the illuminance in the peripheral area of the central portion of the irradiated surface, and the desired beam angle, In particular, a narrow beam angle (for example, 10 degrees, in which case the allowable range is 7.5 degrees to 12.5 degrees) cannot be obtained.
- the distance D between the central filament element 70 and each of the peripheral filament elements 71, 72, 73 is set in the range of 0.1 [mm] to 2.2 [mm], respectively.
- the density of the filament body 68 in the central illuminance contribution region can be further increased, the central illuminance can be made extremely high, and the central filament element 70 and the peripheral filament elements 71, 72, It is possible to prevent arc discharge from occurring between the central filament element 70 and the peripheral filament elements 71, 72, 73 due to the arc discharge.
- the distance D is less than 0.1 [mm]
- an arc discharge occurs between the central filament element 70 and the peripheral filament elements 71, 72, 73, and the arc discharge may break the central filament element 70 and the peripheral filament elements 71, 72, 73. If the distance D exceeds 2.2 [mm], the center
- the coils constituting the filament elements 70, 71, 72, 73 in addition to the single winding coil, a double winding coil or a triple winding coil can be used. From the viewpoint of increasing the central illuminance of the irradiated surface when the halogen bulb 53 is used in the reflector 55 of the illuminating device 54, it is compared with a double winding coil or a triple winding coil. Thus, the coil pitch can be reduced, and the above-mentioned central illuminance contribution region (the region contributing to the central illuminance in the reflector 55, that is, the neighboring region including the focal position in the reflector 55) can be reduced. It is preferable to use a single coil that can increase the density of the filament body 68! /.
- the bulb 56 and the filament body 68 As described above, according to the configuration of the halogen bulb 53 according to the ninth embodiment of the present invention, similarly to the halogen bulb according to the eighth embodiment of the present invention, the bulb 56 and the filament body 68 As a result, the amount of evaporation of tungsten, which is a constituent material of the filament body 68, can be significantly reduced. As a result, the coil of the filament body 68 can be reduced. It is possible to prevent the tungsten wire from being thinned and disconnected, and to extend the life. Moreover, since the gap between the bulb 56 and the filament body 68 is kept moderate, both the bulb 56 and the filament body 68 are abnormally hot during lighting. Therefore, it is possible to prevent the valve 56 from being damaged, or the inner surface of the valve 56 from becoming dark due to excessive evaporation of the filament body 68.
- the coil length of the central filament element 70 is L [mm]
- the peripheral filament elements 71, 72 are L [mm]
- the peripheral filament element 71 , 72, 73 can suppress the spread of the irradiated light, and a narrow beam angle can be obtained to achieve a good light distribution characteristic.
- the distance D between the central filament element 70 and each of the peripheral filament elements 71, 72, 73 is set to 0.1 l [mn! ] To 2.2 by setting it in the range of 2 [mm]
- the density of the filament body 68 in the central illuminance contribution region can be further increased, the central illuminance can be extremely high, and the center filament element 70 and the peripheral filament elements 71, 72, 73 can be connected during lighting. It is possible to prevent arc discharge from occurring and disconnection of the central filament element 70 and the peripheral filament elements 71, 72, 73 due to the arc discharge.
- the tip-off portion 62, the light-emitting portion 63 having a substantially rotating ellipsoidal shape, the reduced diameter portion 64, the cylindrical portion 65, and the sealing portion 66 are sequentially formed as the bulb shape.
- the force described in the case of using a continuously formed structure is not limited to this, and the chip-off part (may be absent in some cases), the light-emitting part having a substantially spheroid shape, the reduced diameter part, and the sealing part Bulbs that are formed in series, tip-off parts (may not be present in some cases), valves that are formed of light-emitting parts and sealing parts that are substantially spheroidal, and chip-off parts ( In some cases, it may not be present).
- valves of various known shapes such as a valve formed by sequentially connecting stop portions are used.
- a substantially spheroidal shape described above as the shape of the light emitting portion
- a substantially spherical shape or a substantially complex ellipsoidal shape can be used.
- the outer shape of the cross section cut perpendicularly to the central axes a3, b3, c3, d3 in the longitudinal direction so that the tungsten wire has a cylindrical shape is formed.
- filament elements 70, 71, 72, and 73 that have a single-winding coil force wound in a circle are explained.
- the present invention is not particularly limited to its outer shape.
- the outer shape of the cross section cut perpendicular to the central axes a3, b3, c3, d3 in the longitudinal direction is long.
- each filament element 74, 75, 76, 77 has a diameter of a circle that is centered on a point on the longitudinal central axis X of the valve 56 and circumscribes each filament element 75, 76, 77.
- the maximum outer diameter r of the filament body 78 composed of the filament elements 74, 75, 76, and 77 can be determined in this way.
- the halogen lamp 79 with a reflecting mirror having a rated power of 65 [W] (rated voltage 110 [V]) according to the tenth embodiment of the present invention has a mirror diameter ⁇ force. 35 [mm] ⁇ 100 [
- mm for example, a concave reflector 80 of 50 [mm], and a rated power of 65 [W] (rated voltage 110 [V] according to the fifth embodiment of the present invention disposed inside the reflector 80 ])
- Halogen bulb 31 excluding the base 34
- E-shaped base 81 attached to the end of the reflector 80.
- the longitudinal axis X of the bulb 32 of the halogen bulb 31 is substantially the same as the optical axis Y of the reflector 49.
- the reflecting mirror 80 is made of hard glass or quartz glass, and has an opening 82 for irradiating light at one end and a cylindrical neck 83 at the other end, and a spheroidal surface or rotating release on the inner surface.
- a reflecting surface 84 of a rotating body made of an object surface or the like is formed. Reflective surface 84 as required You can also form facets.
- a front glass 85 is provided in the opening 82, and is fixed by a known fastener 86.
- a known adhesive (not shown) may be used instead of the stopper 86, or the stopper 86 and the adhesive may be used in combination.
- the front glass 85 is not necessarily provided.
- a base 81 is provided outside the neck portion 83 so as to cover almost the entire neck portion 83, and is fixed to the neck portion 83 with an adhesive 87.
- the sealing portion 40 of the halogen light bulb 31 is inserted into the neck portion 83 and fixed thereto via the adhesive 87.
- Multilayer interference consisting of titanium dioxide (TiO 2), magnesium fluoride (MgF), zinc sulfate (ZnS), etc.
- a film is formed.
- the noble 32 and the filament body Since the convection layer generated between the coil body 42 and the coil body 42 can be made extremely thin, the amount of evaporation of tungsten, which is a constituent material of the filament body 42, can be significantly reduced. It is possible to prevent the tungsten wire from being thinned and disconnected, and to extend the service life. In addition, since the gap between the bulb 32 and the filament body 42 is kept moderate, it is possible to prevent the bulb 32 and the filament body 42 from becoming abnormally hot during lighting. It is possible to prevent the 32 from being damaged or the inner surface of the valve 32 from becoming dark due to excessive evaporation of the filament body 42.
- the force described in the case where the three filament elements 46, 47, 48 are arranged so as to form a substantially equilateral triangle is used.
- four filament elements are used.
- When arranged so as to form a substantially square when arranged so that five filament elements form a substantially regular pentagon, when arranged so as to form a substantially regular hexagon, or more Even in this case, the same effects as described above can be obtained.
- another filament element may be placed in the space surrounded by each filament element, for example, having the same shape and size as the filament element, or different Shape with different dimensions so that they are positioned approximately on the central axis X in the longitudinal direction of valve 2.
- the shape of the bulb 32 includes a tip-off portion 36, a light emitting portion 37 having a substantially spheroidal shape, a reduced diameter portion 38, a cylindrical portion 39, and a sealing portion 40, respectively.
- the force described in the case of using the successively formed ones is not limited to this, and the chip-off part (there may be no case in some cases), the light-emitting part having a substantially spheroid shape, the reduced diameter part and the sealing part Sequentially formed bulbs, tip-off parts (may not be present in some cases), bulbs with a substantially spheroidal light-emitting part and sealing part, or tip-off parts (in some cases)
- the same effect as described above can be obtained even when a well-known various shaped valve such as a bulb in which a substantially cylindrical light emitting portion and a sealing portion are successively formed is used. it can.
- the light emitting portion may be of a substantially spherical shape or a substantially composite ellipsoidal shape.
- the outer shape of the cross section cut perpendicular to the central axes b3, c3, d3 in the longitudinal direction is a circle so that the tungsten wire has a cylindrical shape.
- the case of using filament elements 46, 47, and 48 that also have a single-winding coil force wound as described is described.
- the present invention is not particularly limited to the outer shape.
- the outer shape of the cross section cut perpendicularly to the central axes b3, c3, d3 in the longitudinal direction is an ellipse. Even when the filament elements 49, 50, 51 having coil force wound so as to draw are used, the same effect as described above can be obtained.
- a halogen lamp 88 with a reflector having a rated power of 65 [W] (rated voltage of 110 [V]) according to the eleventh embodiment of the present invention has a mirror diameter ⁇ force. 35 [mm] ⁇ 100 [
- mm 50 [mm]
- a concave reflector 89 50 [mm]
- a Rogen bulb 90 disposed inside the reflector 89
- an E-shaped base 91 attached to the end of the reflector 89, for example. It is equipped with.
- the longitudinal axis X of the bulb 101 described later of the halogen bulb 90 represents the light from the reflector 89. It almost coincides with the axis Y.
- the reflecting mirror 89 is made of hard glass or quartz glass, and has an opening 93 for irradiating light at one end and a cylindrical neck 94 at the other end, and a spheroidal surface or rotating release on the inner surface.
- a reflecting surface 95 of the rotating body made of an object surface or the like is formed.
- the reflective surface 95 may be faceted as necessary.
- a front glass 96 is provided in the opening 93, and is fixed by a known fastener (not shown), a known adhesive (not shown), or a combination thereof.
- the front glass 96 is not necessarily provided.
- a base 91 is provided on the outer side of the neck portion 94 so as to cover almost half of the neck portion 94, and is fixed with an adhesive 97.
- a sealing portion 100 (to be described later) of the halogen bulb 90 is inserted into the neck portion 94 and is also fixed to the neck portion 94 with an adhesive 97.
- Multilayer interference consisting of titanium dioxide (TiO 2), magnesium fluoride (MgF), zinc sulfate (ZnS), etc.
- a film is formed.
- the halogen light bulb 90 is a quartz glass in which a chip-off portion 98, which is a residue of sealing cut, a light emitting portion 99 having a substantially cylindrical shape, and a sealing portion 100 formed by a known pinch seal method are successively connected. It has a valve 101 that can be used as a hard glass. A visible light transmitting infrared reflecting film may be formed on the outer surface of the valve 101 as required! / ⁇ .
- substantially cylindrical shape as used herein means not only the complete cylindrical shape but also the case where the complete cylindrical shape force is shifted due to variations in glass processing. is doing.
- a filament body 102 is provided in the light emitting unit 99, and a predetermined amount of a halogen substance and a rare gas, or a halogen substance, a rare gas, and a nitrogen gas are sealed therein.
- the other end portion of the internal lead wire 103 is connected to one end portion of the external lead wire 105 through a molybdenum metal foil 104 sealed in the sealing portion 100.
- the other end of the external lead wire 105 is led out of the valve 101 and is electrically connected to the terminal portions 92a and 92b of the base 91, respectively.
- the constructive force of filament body 102 is the same as that of filament body 68 in the sixth embodiment, and therefore filament body 102 will be described with reference to FIG. 26 and FIG.
- the filament body 102 includes one central filament element 106 and three peripheral filament elements 107, 108, 109.
- the central filament element 106 and the peripheral filament elements 107, 108, 109 are all made of tungsten, and are a single-strand coil force extending in a straight line, and each is electrically connected in series. Being sung.
- the wire diameter of the tungsten wire that constitutes this single winding coil is 0.015 [mm to 0.100 [mm], for example, 0.050 [mm].
- the central filament element 106 has a longitudinal central axis a5 on the optical axis Y of the reflector 89.
- substantially positioned here means that the center axis a5 is ideally perfectly located on the optical axis Y of the reflecting mirror 89, but the alignment accuracy in the manufacturing process is
- the central axis a5 may deviate from the optical axis Y of the reflector 89 in practice.
- Peripheral filament elements 107, 108, 109 are centered around central filament element 106 and their longitudinal central axes b5, c5, d5 are substantially parallel to the longitudinal central axis a5 of central filament element 106 are arranged as follows. In addition, these three peripheral filament elements 107, 108, 109 are arranged with respect to the longitudinal central axes b5, c5, d5 and the longitudinal central axis a5 of the central filament element 106 as shown in FIG. Intersection where any perpendicular plane P intersects
- substantially parallel and substantially equilateral triangle form completely equilateral triangles due to variations in assembly accuracy in the assembly process of the filament body 102.
- the center filament element 106 includes a position of the focal point F of the rotating body forming the reflecting surface 95 as shown in Fig. 26, and is located on the center axis a5 of the center filament element 106.
- peripheral filament elements 107, 108, and 109 are based on this, and the respective peripheral filament elements 107, 108, and 109 are points F, F, and F described later in the reflector 89 (in FIG. 26 b5 c5 d5, Each peripheral filament element 107, 1 b5 c5
- the points F 1, F 2, F are the rotating bodies b5 c5 d5 forming the reflecting surface 95
- Plane Q that includes the position of the focal point F of the mirror and intersects perpendicularly to the optical axis Y of the reflector 89
- the distance of 5 5 5 5 5 is 2. 35 [mm], and the distance between the points F 1, F 2, F and the center points B 1, C 3, D is b5 c5 d5 5 5 5
- each is 1 ⁇ 20 [mm].
- the central filament element 106 and the peripheral filament elements 107, 108, 108 are connected to the center point A and the peripheral filament element 106 of the central filament element 106.
- the central points B, C, D of the current elements 107, 108, 109 are at the focal point F of the reflecting surface 95 of the reflecting mirror 89.
- the density of the filament body 102 can be increased, and the central illuminance can be increased.
- Such a filament body 102 can be accommodated in a single cylindrical body in which the central filament element 106 and the peripheral filament elements 107, 108, 109 have an outer diameter (maximum outer diameter) r [mm].
- the maximum inner diameter of the portion of the valve 101 where the filament body 102 is located is R [mm]
- the maximum outer diameter r is determined by the central filament element 106 and the peripheral filament element 107,
- the distance D) can be adjusted by changing as appropriate.
- Maximum outer diameter r of central filament element 106 and peripheral filament elements 107, 108, 109 is the central filament
- C3 S3 can be adjusted by appropriately changing the coil pitch.
- the coil lengths L of 8, 109 may be the same length. At that time, for example, rated power
- coil length L and coil length L are 3 ⁇ 0 [mm]
- each peripheral filament element 107, 108, 109 is the same, the coil length L and the coil
- S5 C5 Length L may be different. At that time, for example, for halogen bulbs with a rated power of 65 [W]
- the coil length L is within the range of 3 ⁇ 5 [mm] to 15.0 [mm], the coil length L is 1 ⁇ 5 [
- the coil length L of each peripheral filament element is also different.
- the coil length L is set within the range of 3.5 [mm] to 15.0 [mm], and the coil length L is 1
- the pitch of the single winding coil is set in the range of 0.05 [mm] to 0.07 [mm] in both the central filament element 106 and the peripheral filament elements 107, 108, and 109.
- the length L is the illuminance irradiated from each peripheral filament element 107, 108, 109 to the irradiated surface.
- the maximum outer diameter r and coil length L depend on the peripheral filament element 10 Due to processing variations in the manufacturing process of 7, 108, 109, there may be variations between individual peripheral filament elements 107, 108, 109.
- the ends of the filament elements 106, 107, 108, 109 on the side of the opening 93 are preferably located in substantially the same plane. Thereby, the illuminance on the irradiation surface irradiated by each filament element 106, 107, 108, 109 is made uniform, and a uniform light distribution curve can be obtained.
- the coil length L [mm] of 108 and 109 is 0.2 ⁇ L / L ⁇ 0.9 for the reasons described later.
- the coil lengths L of the peripheral filament elements 107, 108, 109 are substantially equal.
- substantially equal means that the coil is manufactured as described above.
- each coil length L varies due to variations in the manufacturing process.
- the distance D between the central filament element 106 and each peripheral filament element 107, 1 08, 109 is set in the range of 0.1 l [mm] to 2.2 [mm] respectively. It is preferable that As a result, the density of the filament body 102 in the central illuminance contribution region contributing to the central illuminance in the reflecting mirror 89 can be further increased, and the central illuminance can be further increased. It is possible to prevent the central filament element 106 and the peripheral filament elements 107, 108, 109 from being disconnected by the arc discharge occurring between the peripheral filament elements 107, 108, 109 and the peripheral filament elements 107, 108, 109.
- a double-winding coil and a triple-winding coil can be used in addition to the single-winding coil, but the central illuminance is further increased.
- the pitch can be made smaller than that of the double-winding coil or the triple-winding coil, and the filament body 102 located in the central illuminance contribution region contributing to the central illuminance in the reflector 89 can be reduced. It is preferable to use a single-winding coil that can increase the density.
- the maximum outer diameter of the filament body 102 is r [mm], 0.25 ⁇ r /R ⁇ 0.75
- the maximum inner diameter R of the portion where the filament body 102 is located in the bulb 101 is constant at 9 [mm].
- the maximum outer diameter r [mm] of the filament body 102 is the distance between two neighboring filament elements.
- the denominator indicates the total number of samples, and the numerator indicates the number of the filaments 102 that are disconnected from the total number of samples. Also, in the “Black / Black” column, the denominator indicates the number of broken samples out of the total number of samples, and the number of samples in which the denominator is not broken is blackened on the inner surface of the valve 101. The number of items is shown. However, the judgment of blackening is made by judging that “blackening is present” when it can be confirmed that black or colored matter adheres to the inner surface of the valve 101 by visual inspection.
- the lighting method was repeated for 5.5 hours of lighting and 0.5 hours of light off as one cycle.
- the “lighting elapsed time” is an accumulated time of the lighting time.
- the pitch deviation is also 0.05 mm to 0.07 mm, and the maximum outer diameter r. Consists of a single-turn coil of 0.65 [mm]. However, the coil length L of the central filament element is 5.7 [mm], and the coil length L of the peripheral filament element is 3.4 [mm].
- the filament body 102 was broken until the lighting for 000 hours passed.
- the coil length of the central filament element 106 is L [mm]
- the peripheral filament element 107 is L [mm]
- the coil length L of the central filament element 106 and the coil of the peripheral filament elements 107, 108, 109 are used.
- the maximum inner diameter R of the portion of the bulb 101 where the filament body 102 is located is 9.0 [mm].
- Each of the central filament element 106 and the peripheral filament elements 107, 108, 109 is composed of a single coil, and the pitch is 0.05 [mm] to 0.07 [mm], and the maximum outer diameter r is 0.65 [mm]. ]. Also filament body 1
- the maximum outer diameter r of 02 is 4.50 [mm].
- the distance D is 1.275 [mm].
- beam angle represents an average value of five samples.
- the beam angle of 10 degrees (allowable range: 7.5 degrees to 12.5 degrees), which is the mainstream of what is currently marketed as a narrow angle type, was used as the evaluation standard.
- the center illuminance exceeds the center illuminance (6500 [lx]) of the conventional product and satisfies the above-mentioned evaluation criteria, but the beam angle is 13.0 degrees and does not satisfy the above-mentioned evaluation criteria. all right.
- L / L (
- the beam angle is 7.5 degrees, which satisfies the above evaluation criteria, but the central illuminance does not satisfy the above evaluation criteria.
- the coil L of the contributing peripheral filament elements 107, 108, 109 can be shortened appropriately.
- the coil length L of the central filament element 106 that greatly contributes to the increase or decrease of the illuminance (center illuminance) of the central portion on the irradiation surface can be made as much as possible. That
- the peripheral filament elements 107, 108, 109 should contribute as much as possible to the increase in illuminance to the central part of the irradiated surface, while reducing the illuminance in the peripheral area of the central part on the irradiated surface as much as possible. Can do.
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05806860A EP1722400A1 (en) | 2004-11-16 | 2005-11-15 | Lamp bulb, lamp bulb with reflecting mirror, and lighting system |
JP2006545076A JP4197035B2 (ja) | 2004-11-16 | 2005-11-15 | 管球、反射鏡付き管球および照明装置 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-331537 | 2004-11-16 | ||
JP2004331537 | 2004-11-16 | ||
JP2004-361188 | 2004-12-14 | ||
JP2004361188 | 2004-12-14 | ||
JP2005-193386 | 2005-07-01 | ||
JP2005193386 | 2005-07-01 |
Publications (1)
Publication Number | Publication Date |
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WO2006054563A1 true WO2006054563A1 (ja) | 2006-05-26 |
Family
ID=36407106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/020976 WO2006054563A1 (ja) | 2004-11-16 | 2005-11-15 | 管球、反射鏡付き管球および照明装置 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1722400A1 (ja) |
JP (2) | JP4197035B2 (ja) |
WO (1) | WO2006054563A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008059893A (ja) * | 2006-08-31 | 2008-03-13 | Matsushita Electric Ind Co Ltd | 管球、反射鏡付き管球、および照明装置 |
JP2008198560A (ja) * | 2007-02-15 | 2008-08-28 | Ushio Inc | 白熱電球 |
WO2009001515A1 (ja) * | 2007-06-27 | 2008-12-31 | Panasonic Corporation | 管球および反射鏡付き管球 |
WO2009001507A1 (ja) * | 2007-06-25 | 2008-12-31 | Panasonic Corporation | 管球および反射鏡付き管球 |
WO2010137510A1 (ja) * | 2009-05-29 | 2010-12-02 | ウシオ電機株式会社 | 白熱電球および光源装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102157337B (zh) * | 2011-02-11 | 2014-11-12 | 陶国胜 | 一种双灯丝吸顶灯 |
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JPH06510881A (ja) * | 1991-07-02 | 1994-12-01 | カニングハム,デビッド ダブリュ. | 白熱照明装置 |
JP2000082444A (ja) * | 1998-09-02 | 2000-03-21 | Mineta Seisakusho:Kk | 電球用コイルフィラメント |
JP2002063869A (ja) * | 2000-05-12 | 2002-02-28 | General Electric Co <Ge> | 高効率照明システムで使用するための白熱電球 |
WO2003075317A1 (fr) * | 2002-03-05 | 2003-09-12 | Mineta Company Ltd. | Filament |
-
2005
- 2005-11-15 WO PCT/JP2005/020976 patent/WO2006054563A1/ja active Application Filing
- 2005-11-15 EP EP05806860A patent/EP1722400A1/en not_active Withdrawn
- 2005-11-15 JP JP2006545076A patent/JP4197035B2/ja not_active Expired - Fee Related
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2008
- 2008-07-24 JP JP2008190913A patent/JP2008288218A/ja not_active Withdrawn
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JPH06510881A (ja) * | 1991-07-02 | 1994-12-01 | カニングハム,デビッド ダブリュ. | 白熱照明装置 |
JP2000082444A (ja) * | 1998-09-02 | 2000-03-21 | Mineta Seisakusho:Kk | 電球用コイルフィラメント |
JP2002063869A (ja) * | 2000-05-12 | 2002-02-28 | General Electric Co <Ge> | 高効率照明システムで使用するための白熱電球 |
WO2003075317A1 (fr) * | 2002-03-05 | 2003-09-12 | Mineta Company Ltd. | Filament |
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JP2008059893A (ja) * | 2006-08-31 | 2008-03-13 | Matsushita Electric Ind Co Ltd | 管球、反射鏡付き管球、および照明装置 |
JP2008198560A (ja) * | 2007-02-15 | 2008-08-28 | Ushio Inc | 白熱電球 |
WO2009001507A1 (ja) * | 2007-06-25 | 2008-12-31 | Panasonic Corporation | 管球および反射鏡付き管球 |
JP2009004333A (ja) * | 2007-06-25 | 2009-01-08 | Panasonic Corp | 管球および反射鏡付き管球 |
WO2009001515A1 (ja) * | 2007-06-27 | 2008-12-31 | Panasonic Corporation | 管球および反射鏡付き管球 |
JP2009009775A (ja) * | 2007-06-27 | 2009-01-15 | Panasonic Corp | 管球および反射鏡付き管球 |
WO2010137510A1 (ja) * | 2009-05-29 | 2010-12-02 | ウシオ電機株式会社 | 白熱電球および光源装置 |
JP2010277883A (ja) * | 2009-05-29 | 2010-12-09 | Ushio Inc | 白熱電球および光源装置 |
Also Published As
Publication number | Publication date |
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JPWO2006054563A1 (ja) | 2008-05-29 |
JP2008288218A (ja) | 2008-11-27 |
EP1722400A1 (en) | 2006-11-15 |
JP4197035B2 (ja) | 2008-12-17 |
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