JP2007250231A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture of low cost and excellent fixture efficiency having a design property as before in a state of being hung from a ceiling. <P>SOLUTION: The lighting fixture 100 is provided with a bowl-shaped polyhedral reflective shade 110 with a plurality of polyhedral reflective plates of cross-section bow shapes formed by folding a high-reflectivity flat plate in multiple stages and molding it, and a cylindrical deep-drawn reflective shade 120 having a curved surface by a polyhedron deep drawing process. The deep-drawn reflective shade 120 is arranged in a skirt shape from a lamp-light emission port of the polyhedral reflective shade 110. Further, the deep-drawn reflective shade 120 has a height B enough to shield the inner face of the polyhedral reflective shade 110 at a lamp shielding angle θ. The provision of the polyhedral reflective shade 110 enhances fixture efficiency, and the provision of the deep-drawn reflective shade 120 shields the direct light of the lamp and glare generated on the inner face of the polyhedral reflective shade 110, while the design property as before is secured. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to, for example, a lighting fixture excellent in fixture efficiency and design properties.

Conventionally, as a reflective shade used for a downlight or the like, a hemispherical shade is generally used.
In general, the surface of the reflective shade is generally anodized after chemical polishing, electrolytic polishing, buffing, or the like, and the reflectance thereof is generally less than 90%.
And in order to improve the efficiency of a lighting fixture, the method of improving reflection efficiency by vapor-depositing aluminum or silver on the surface of a reflective shade is taken.
In addition, there is an example in which a reflective shade composed of a polyhedron is used in a lighting fixture for the purpose of controlling the directionality of reflected light and using a highly reflective material.
Utility Model Registration No. 3106768 Utility Model Registration No. 3093912

However, when aluminum or silver is vapor-deposited on the surface of the reflective shade in order to improve the reflection efficiency, the production of a large reflective shade is particularly expensive due to restrictions on processing equipment.
In addition, conventional reflective shades composed of polyhedrons for the purpose of controlling the direction of reflected light and using high-reflectance materials have a unique design and impair the design of the space installed as a lighting fixture. Not popular.

  An object of the present invention is, for example, to maintain a design that is the same as that in the past when installed on a ceiling, and to provide a lighting apparatus that is low in cost and good in apparatus efficiency.

  The luminaire of the present invention includes a bowl-shaped main shade having a discharge port that is disposed inside and having a discharge port for emitting lamp light, and an attached shade that forms a skirt-shaped tube portion from the discharge port of the main shade, The main shade is formed of a plurality of component plates.

  According to the present invention, by providing the main shade having high reflectivity and the attached shade having the same design as the conventional one, for example, in the state where it is installed on the ceiling, the design is not different from the conventional one and the device efficiency is good. It becomes possible to provide a lighting fixture at low cost.

Embodiment 1 FIG.
A lighting fixture (particularly, a lighting shade) including a high reflectance main shade and an attached shade having a height that shields the inner surface of the main shade at the lamp shading angle will be described below.
In particular, a lighting fixture having a high-efficiency reflective shade (main shade) constructed by combining a plurality of reflectors bent so as to have reflective surfaces in various directions using a material having a reflectance of 90% or more is described below. Explained.
Further, a lighting fixture having a structure having a deep-drawn reflecting shade (attached shade) obtained by deep-drawing an opening portion having a lamp shading angle or less and the high-efficiency reflective shade (main shade) will be described.

FIG. 1 is a perspective view from below showing a luminaire 100 according to Embodiment 1. FIG.
FIG. 2 is a perspective view from above showing the luminaire 100 according to the first embodiment.
As shown in FIGS. 1 and 2, the luminaire 100 includes a main shade polyhedral reflector shade 110 constituted by a highly efficient reflective member and an attached shade deep shade shade 120, and the lamp 130 is disposed inside. It is attached.

The polyhedral reflecting shade 110 is an illumination shade configured by combining a plurality of reflecting plates using a material (for example, a Milo material) having a high light reflectance (for example, 90% or more) in order to increase the instrument efficiency.
The polyhedral reflecting shade 110 has a bowl shape with an opening at the bottom, the lamp 130 is disposed inside the top, reflects the lamp light on the inner surface (surface) having a high reflectivity, and receives the lamp light from the emission port (opening). discharge.
The polyhedral reflecting shade 110 forms a bowl shape in a polygonal shape.

In order to make the design of the lighting fixture 100 in the first embodiment equal to that of the conventional lighting fixture, that is, in order not to impair the designability of the lighting fixture, the deep-drawn reflector shade 120 It is an illumination shade molded by processing, and is disposed in the vicinity of the opening (discharge port) of the polyhedral reflective shade 110.
The deep aperture reflection shade 120 has a cylindrical portion formed in a skirt shape from the emission port of the polyhedral reflection shade 110, and the cylindrical portion of the deep aperture reflection shade 120 receives the lamp light emitted from the emission port of the polyhedral reflection shade 110. The light enters from the exit and exits from the exit opening that opens at the bottom.
The deep-drawn reflection shade 120 as a whole forms, for example, a cylindrical shape, a saddle shape, and a bell shape.
The deep-drawn reflecting shade 120 that forms a tubular shape as a whole is disposed inside or outside the polyhedral reflecting shade 110, and the deep-drawn reflecting shade 120 that forms a bowl-like or bell-like shape as a whole is the top of the polyhedral reflective shade 110. Is placed in the direction from the bottom to the bottom (attached shade placement step).
The deep-drawn reflecting shade 120 is made of a material having a low light reflectance (for example, less than 90%) as compared with a general light reflectance or the reflectance of the polyhedral reflective shade 110 (for example, a surface whose surface is chemically polished anodized). Is an illumination shade formed into a curved surface by drawing such as deep drawing or spatula drawing.

  FIG. 1 and FIG. 2 show an example of a lighting fixture 100 assembled by arranging a cylindrical deep-drawing reflecting shade 120 formed by deep drawing processing inside a polyhedral reflecting shade 110.

  Here, the fixture efficiency is the efficiency at which the light emitted from the lamp is reflected by the inner surface of the lighting fixture and emitted to the outside. When the lamp is attached to the lighting fixture with respect to the amount of light flux observed in the case of the lamp alone, the lighting efficiency is obtained. This is the percentage of the luminous flux observed outside the instrument.

Next, the relationship among the polyhedral reflecting shade 110, the deep drawing reflecting shade 120, and the lamp 130 will be described.
FIG. 3 is a front sectional view of lighting apparatus 100 in the first embodiment.
As shown in FIG. 3, the luminaire 100 according to Embodiment 1 has a lamp shading angle θ in a deep-drawn reflecting shade 120.

  Here, the lamp light shielding angle θ is an angle with respect to a horizontal direction in which the luminaire shields the lamp from the outside. The greater the lamp shading angle θ, the more the direct light shielding area can be directed closer to the lamp (that is, the light is emitted in the gorge area [directly below), and the lamp is more easily hidden from human eyes). . In addition, the smaller the lamp blocking angle θ, the wider the range of direct light emission from the lamp can be in the direction away from the lamp (that is, the light is emitted in a wide range, and the lamp is easily viewed directly by human eyes). Therefore, an angle of about 10 ° or more, particularly 10 ° to 30 °, and particularly about 15 ° to 25 ° is desired as the lamp light shielding angle θ.

  Moreover, the lighting fixture 100 in Embodiment 1 has the height B which shields the inner surface of the polyhedral reflecting shade 110 at the lamp shading angle θ in the deep aperture reflecting shade 120 as shown in FIG.

A conventional illumination shade that does not have a high reflectivity has a low lamp reflectivity even if it can shield the direct light of the lamp by having an appropriate lamp shielding angle θ, and therefore the efficiency of the fixture is low.
In addition, since the conventional lighting shade using only a high reflectance material has a high light reflectance, it has an appropriate lamp shading angle θ to block the direct light of the lamp and to suppress the reduction of the fixture efficiency. Even if it can be done, the light reflectivity is high, so that the glare generated on the inner surface of the illumination shade cannot be blocked, and the design is poor.

  However, the luminaire 100 according to the first embodiment includes the polyhedral reflecting shade 110 having high reflectivity, and the appropriate lamp shading angle θ and the height B that shields the inner surface of the polyhedral reflecting shade 110 at the lamp shading angle θ. It is possible to increase the efficiency of the fixture, to shield the direct light of the lamp, and to prevent glare generated on the inner surface of the polyhedral reflecting shade 110. It can be shielded, and design properties can be secured.

For example, as shown in FIG. 3, in the lighting fixture 100 according to the first embodiment, a lamp 130 higher than the height of the polyhedral reflecting shade 110 is attached to increase the efficiency of the fixture, and a part of the lamp 130 is exposed from the polyhedral reflecting shade 110. The ratio “A: C” between the height “A” of the polyhedral reflecting shade 110 and the height “C” of the lamp 130 is approximately “4: 5”.
In addition, the lighting fixture 100 according to the first embodiment has a lamp shading angle θ () on the deep-drawn reflecting shade 120 in order to maintain the conventional design and shield glare generated on the inner surface of the polyhedral reflecting shade 110 from the outside. The ratio “A: B” between the height “A” of the polyhedral reflecting shade 110 and the height “B” of the deep-drawing reflecting shade 120 is approximately “2: 1”. "

The height “A” of the polyhedral reflecting shade 110 is the height inside the polyhedral reflecting shade 110, which is the height from the top to the opening (radiation port), and from the top to the deep aperture reflecting shade 120. It is the height to the cylinder part, and is the height from the top part to the entrance of the deep aperture reflecting shade 120.
Further, the height “B” of the deep aperture reflecting shade 120 is the height of the cylindrical portion, and is the height from the entrance to the exit.
Further, the height “C” of the lamp 130 is the height from the top of the polyhedral reflecting shade 110 when attached to the lighting fixture 100.

Next, a method for forming the polyhedral reflecting shade 110 will be described.
FIG. 4 is an exploded perspective view of the polyhedral reflecting shade 110 according to Embodiment 1 from above.
As shown in FIG. 4, the polyhedral reflecting shade 110 includes a polyhedral reflecting plate 111 (reflecting plate A 111 a and reflecting plate B 111 b) that is bent in multiple stages so that the lamp light is efficiently reflected outside the lighting fixture. In the center, a plurality of circumferences are arranged.

A member having a high reflectance represented by a miro material is difficult to process, and there is a problem that the coating is broken when a curved surface is formed by drawing. Therefore, conventionally, in order to obtain a high reflectance, a method of increasing the reflectance by vapor-depositing aluminum or silver on the inner surface of the illumination shade having a curved surface formed by drawing is employed.
However, it is difficult to uniformly deposit aluminum or silver on the illumination shade that forms the curved surface, and there is a problem in that the light reflectance is different in each portion of the illumination shade.

Therefore, in the polyhedral reflecting shade 110 according to the first embodiment, a plurality of flat plates (a component plate that is a light reflecting material, for example, a miro material) having at least one surface having a high reflectivity are arranged on the inside with a surface having a high reflectivity. Then, the cross section is bent from the outside in the lateral direction, and the cross section is formed into a bow shape (part plate forming step).
The flat plate to be molded has a triangular shape, trapezoidal shape, home base shape, catcher protector shape, etc., with a narrow upper end and a wide lower end. It is the polyhedral reflector 111 which formed.
Thereby, the polyhedral reflective shade 110 in Embodiment 1 can solve the above-described problem.

The polyhedral reflecting shade 110 is formed by arranging a plurality of polyhedral reflecting plates 111 in a circumferential shape. In particular, a pseudo hemisphere (a bowl shape) is formed by using three or more polyhedral reflectors 111. In particular, a saddle shape is formed by setting an integral multiple of the number of lamps 130 to be arranged as the number of polyhedral reflectors 111.
For example, when four lamps 130 are attached to the luminaire 100, as shown in FIG. 4, the reflecting plate A 111a and the reflecting plate B 111b are alternately arranged to form the polyhedral reflecting shade 110 with the eight polyhedral reflecting plates 111. . As shown in FIG. 4, a lamp mounting opening for attaching one lamp 130 is formed by one reflector B 111b and two reflectors A 111a arranged on both sides of the reflector B 111b.
The reflector A 111a has a hook-shaped or diamond-shaped tip at the upper end, and the tip is positioned between the lamps. The reflector B 111b has an upper end portion that is an arc-shaped tip portion such as a round neck shape or an apron shape, and the tip portion is positioned in front of the lamp.

FIG. 5 is a front view of reflector A 111a after bending in the first embodiment.
FIG. 6 is a left side view of reflector A 111a after bending in the first embodiment.
Figure 7 is a plan view from F _a direction of the reflection plate A 111a after folding in the first embodiment.
FIG. 8 is a perspective view from above of the reflector A 111a after bending in the first embodiment.
Figure 9 is a left side view of an enlarged A ₁ part of the reflector A 111a in the first embodiment.
Figure 10 is an enlarged plan view of _{A 1} part of the reflector A 111a in the first embodiment.
Figure 11 is a front view enlarging a ₆ parts _A reflector A 111a in the first embodiment.
A reflector A 111a having seven surfaces (A ₀ , A ₁ , A ₂ , A ₃ , A ₄ , A ₅ , A ₆ ) bent at six locations will be described below with reference to FIGS.

As shown in FIGS. 7 and 8, the surface _A0 has a lamp mounting opening portion. The remaining surfaces A ₁ to A ₆ are surfaces in contact with the reflector B 111b.
As shown in FIGS. 5, 6, and 8, the surface A ₁ has a claw 113 and the surface A ₆ has a notch A 114 a as parts for fitting and joining with the reflector B 111 b.
As shown in FIGS. 9 and 10, the claw 113 is a plate-like component that extends approximately at right angles to the plane A ₁ .
The notch A 114a has an upward cut as shown in FIG.
As shown in FIG. 5, the respective widths (W _a1 , W _a2 , W _a3 , W ₆ ) of the _six surfaces (A ₁ , A ₂ , A ₃ , A ₄ , A ₅ , A ₆ ) in contact with the reflector B 111b. _a4 , W _a5 , W _a6 ) is “W _a1 <W _a2 <W _a3 <W _a4 <W _a5 <W _a6 (or W _a1 ≦ W _a2 ≦ W _a3 ≦ W _a4 ≦ W _a5 ≦ W _a6 )” There is a relationship. The ratio of the width of each adjacent surface is such that the width of the lower surface is approximately “1.0 to 1.3 times” with respect to the width of the upper surface. The width ratio is large.
As shown in FIG. 6, the reflecting plate A 111a has a cross section formed in a bow shape. The lengths (L _a1 , L _a2 , L _a3 , L _a4 , L _a5 ) of the _six surfaces (A ₁ , A ₂ , A ₃ , A ₄ , A ₅ , A ₆ ) in contact with the reflector B 111b are also described. , L _a6 ) is in the relationship of “L _a1 ≈L _a2 ≈L _a3 ≈L _a4 ≈L _{a5 ≈L a6} ”, and the ratio “H _a : L _ax [x: 1] with the height Ha of the reflector A 111a ˜6] ”is approximately in a relationship of“ 4: 1 ”. The surface _{A 1} and the surface _{A 2,} the surface _{A 2} and the surface _{A 3,} surfaces _{A 3} and the surface _{A 4} and the surface _{A 4} and each corner of the plane _{A 5} forms _{(α 1, α 2, α} 3, α 4 ) Has a relationship of “α ₁ <α ₂ <α ₃ <α ₄ (or α ₁ ≦ α ₂ ≦ α ₃ ≦ α ₄ )”. Each angle α _x of α ₁ , α ₂ , α _3, and α ₄ is approximately “160 ° ≦ α _x ≦ 180 °”, and the angles (α ₁ [upper] and α ₂ [lower], α ₂ [upper] and α ₃ [lower] or α ₃ [upper] and α ₄ [lower]), the upper angle is approximately “1.00 times to 1.05 times” with respect to the lower angle. In particular, the ratio of the upper angle to the lower angle is larger as it is higher. Further, the angle α ₀ formed by the surface A ₀ and the surface A ₁ and the angle α ₅ formed by the surface A ₅ and the surface A ₆ are in a relationship of “α ₀ ≈α ₅ ”, which is approximately “installation tool 150 ° ≦ α ₀ (or α ₅ ) ≦ 160 ° ”. Further, in the cross-sectional width (depth) _{W a} reflector A 111a and the height _{H a} of the reflector A 111a, the approximate _"L a0 _{-L a6"} content, towards the _{W a} is long.

FIG. 12 is a front view of reflector B 111b after being bent in the first embodiment.
FIG. 13 is a left side view of reflector B 111b after being bent in the first embodiment.
Figure 14 is a plan view from _{F b} direction of the reflection plate B 111b after folding in the first embodiment.
FIG. 15 is a perspective view from above of the reflecting plate B 111b after being bent in the first embodiment.
Figure 16 is a front view enlarging a B ₁ part reflector B 111b after folding in the first embodiment.
A reflector B 111b having _six surfaces (B ₁ , B ₂ , B ₃ , B ₄ , B ₅ , B ₆ ) bent at five locations will be described below with reference to FIGS.

As shown in FIGS. 12 and 14 to 16, the surface B ₁ has a lamp mounting opening portion and is in contact with the reflector A 111 a at the surfaces B ₁ to B ₆ .
As shown in FIGS. 12 and 14 to 16, the surface B ₁ has a slit 112 and the surface B ₆ has a notch B 114 b as components for fitting and joining with the reflector A 111 a.
The notch B 114b has a downward cut as shown in FIG.
As shown in FIG. 12, the respective widths (W _b1 , W _b2 , W _b3 , W ₆ ) of the _six surfaces (B ₁ , B ₂ , B ₃ , B ₄ , B ₅ , B ₆ ) in contact with the reflector A 111a. _b4 , W _b5 , W _b6 ) is “W _b1 <W _b2 <W _b3 <W _b4 <W _b5 <W _b6 (or W _b1 ≦ W _b2 ≦ W _b3 ≦ W _b4 ≦ W _b5 ≦ W _b6 )” There is a relationship. The ratio of the width of each adjacent surface is such that the width of the lower surface is approximately “1.0 to 1.3 times” with respect to the width of the upper surface. The width ratio is large.
As shown in FIG. 13, the reflecting plate B 111b has a cross section formed in a bow shape. Further, the lengths (L _b1 , L _b2 , L _b3 , L _b4 , L _b5 ) of the _six surfaces (B ₁ , B ₂ , B ₃ , B ₄ , B ₅ , B ₆ ) that are in contact with the reflector A 111a. , _{L b6)} is _{"L b1 ≒ L b2 ≒ L b3} ≒ L b4 ≒ L b5 ≒ L b6 " There the relationship, reflector B 111b height _{H b} ratio of _{"H b: L} bx _[x: 1-6] "is approximately in a relationship of" 4: 1 ". Further, the angles (β ₁ , β ₂ , β ₃ , β ₄₎ formed by the surface B ₁ and the surface B ₂ , the surface B ₂ and the surface B ₃ , the surface B ₃ and the surface B _4, and the surface B ₄ and the surface B ₅ are formed. ) Has a relationship of “β ₁ <β ₂ <β ₃ <β ₄ (or β ₁ ≦ β ₂ ≦ β ₃ ≦ β ₄ )”. beta _1, beta _2, each angle beta _x of beta ₃ and beta ₄ are approximate "160 ° ≦ β _x ≦ 180 °", the angle is located in the vertical (beta ₁ [upper] and beta ₂ [lower], beta ₂ [upper] and β ₃ [lower] or β ₃ [upper] and β ₄ [lower]), the upper angle is approximately “1.00 times to 1.05 times” with respect to the lower angle. In particular, the ratio of the upper angle to the lower angle is larger as it is higher. Further, the width (depth) _{W b} of the cross section of the reflector B 111b as the height _{H a} of the reflector B 111b, the approximate length of the surface _{A 6 L a6} minutes, who _{H a} is long.

Surface _{A 1} and the surface _{B 1,} the surface _{A 2} and the surface _{B 2,} surfaces _{A 3} and the surface _{B 3,} the surface _{A 4} and the surface _{B 4,} the surface _{A 5} and the surface _{B 5} and the surface _{A 6} and the surface _{B 6} is in contact with the respective Thus, the reflector A 111a and the reflector B 111b are joined.

FIG. 17 is a front view in which reflector A 111a and reflector B 111b in Embodiment 1 are joined.
FIG. 18 is an enlarged front view of the joint portion β before joining the reflector A 111a and the reflector B 111b in the first embodiment.
FIG. 19 is an enlarged front view of the joint β when the reflector A 111a and the reflector B 111b are joined in the first embodiment.
FIG. 20 is an enlarged front view of the joining portion α before joining the reflector A 111a and the reflector B 111b in the first embodiment.
FIG. 21 is an enlarged front view of the joint α when the reflector A 111a and the reflector B 111b are joined in the first embodiment.
As shown in FIGS. 18 and 19, the notch A 114a of the reflector A 111a and the notch B 114b of the reflector B 111b are in a relationship of fitting with each other.
Further, the claw 113 of the reflector A 111a and the slit 112 of the reflector B 111b have a relationship of fitting each other as shown in FIGS.
Then, the reflecting plate A 111a and the reflecting plate B 111b are arranged in the lateral direction (circumferential direction), the claw 113 is inserted into the slit 112, and the notch A 114a and the notch B 114b are fitted to each other. As shown in FIG. 17, the reflector A 111a and the reflector B 111b are joined and the polyhedral reflector is assembled by sliding the reflector and the reflector B 111b to combine both reflectors and bending the tab 113. (Main cap assembly process). By overlapping the both ends of the reflector A 111a slightly with the both ends of the reflector B 111b (for example, 1 to 2 millimeters), it is possible to prevent a gap from being formed when joined. For example, the reflector A 111a is placed on the outer side, and is slightly overlapped and joined to the reflector B 111b.
Each polyhedral reflecting plate 111 constituting the polyhedral reflecting shade 110 has a joining structure such as a slit 112, a claw 113, and a notch 114. By joining as described above, polyhedral reflection without using parts such as rivets and screws. The shade 110 can be assembled.

FIG. 22 is a front sectional view of embedded lighting apparatus 100 in the first embodiment.
As an example of the form of the lighting fixture 100, a downlight embedded in the ceiling 900 is shown below based on FIG.
The lighting fixture 100 that is an embedded downlight includes a polyhedral reflecting shade 110, a deep aperture reflecting shade 120, a lamp 130, a power supply device 140, and an installation fixture 150.
The polyhedral reflecting shade 110, the deep drawing reflecting shade 120, and the lamp 130 are as described above.
The power supply device 140 is a device that supplies power to the lamp 130.
The installation instrument 150 is an instrument for installing the lighting apparatus 100 on the ceiling 900, and includes a deep-drawn shade mounting tool 151, a fixing tool 152, a fixing tool slide groove 153, and a flange 154.
The deep drawing shade fitting 151 is a device for easily attaching the deep drawing reflection shade 120 to the installation tool 150, and is, for example, a spring-like metal fitting that is attached with the deep drawing reflection shade 120 sandwiched at a plurality of locations.
The fixture slide groove 153 is a slide groove in which the fixture 152 slides up and down.
The flange 154 is located below the ceiling 900 and has a size (diameter) larger than that of the lighting fixture mounting opening opened in the ceiling 900.
The fixture 152 is a fixture that slides the fixture slide groove 153 up and down above the ceiling 900 and fixes the luminaire 100 with the brim 154 positioned below the ceiling 900 with the ceiling 900 interposed therebetween.

  The lighting fixture 100 is installed on the ceiling 900 by attaching the polyhedral reflective shade 110 to the installation fixture 150 connected to the power supply device 140 with a screw or the like, and inserting the installation fixture 150 into the ceiling 900 from the lighting fixture attachment port of the ceiling 900. The installation tool 150 is fixed to the ceiling 900 with the fixture 152, the lamp 130 is inserted into the socket 141 from the lamp attachment port of the polyhedral reflection shade 110 and attached, and the deep drawing reflection shade 120 is installed with the deep drawing shade attachment 151. This is done by attaching to 150.

FIG. 23 is a front cross-sectional view of pendant lighting apparatus 100 in the first embodiment.
FIG. 24 is a front cross-sectional view of the hanging type lighting apparatus 100 according to the first embodiment.
The deep-drawn reflecting shade 120 described above may have a shape that covers the polyhedral reflecting shade 110 as shown in FIGS.
The lamp 130 may be of any type such as an HID (high intensity discharge lamp) or a halogen lamp.
Further, as shown in FIG. 23, the deep-drawn reflector shade 120 may have a shape in which the vicinity of the opening (emission port) extends in a substantially vertical direction and has a semicircular cross section, and the vicinity of the opening as shown in FIG. A shape that extends in a direction perpendicular to the outside and has a triangular cross section may be used.
Further, depending on the type of the lamp 130, the lamp light is blocked depending on the illuminance, brightness, brightness, the efficiency of the fixture that varies depending on the height ratio of the polyhedral reflecting shade 110 and the lamp 130, the irradiation range that varies depending on the shape of the deep aperture reflecting shade 120, etc. The angle θ should be changed.
For example, the lamp shading angle θ is increased as the illuminance, luminance, and brightness of the lamp 130 are higher, and the lamp shading angle θ is increased as the lamp 130 is higher than the polyhedral reflecting shade 110. The larger the aperture diameter, the larger the lamp shading angle θ.
The lamp light blocking angle θ in FIGS. 23 and 24 indicates the relationship “θ1 <θ2”.

FIG. 25 is a table showing a comparison result between the light reflectance and the efficiency of the lighting fixture 100 according to Embodiment 1 and the conventional lighting fixture.
FIG. 26 is a front sectional view and a bottom half view showing the shape and dimensions of a conventional lighting fixture.
FIG. 27 is a front sectional view and a bottom half view showing the shape and dimensions of lighting apparatus 100 in the first embodiment.

In FIG. 25, item No. 1 is a result of a conventional reflecting shade formed by spatula drawing, and item No. 2 is a result of a conventional reflecting shade obtained by subjecting a spatula drawn to aluminum vapor deposition, 3 shows the result of the reflective shade composed of the polyhedral reflective shade 110 and the deep-drawn reflective shade 120 in the first embodiment.
The shape and size of the reflective shade of No. 1 and No. 2 are shown in FIG. 26, and the shape and size of the reflective shade of No. 3 are shown in FIG. The results shown in FIG. 25 are the results of comparing reflective shades having similar shapes and dimensions as shown in FIGS.
In FIG. 25, “upper part” and “lower part” for item number 3 indicate the polyhedral reflecting shade 110 and the deep drawing reflecting shade 120 in the first embodiment, respectively.
The ratio of the amount of light that is specularly reflected (incidence angle ≈ reflection angle) to the amount of light that is incident on the reflective shade (polyhedral reflective shade 110 in the case of item No. 3) is the “specular reflectivity” and diffuses without specular reflection. The ratio of the amount of light reflected is “diffuse reflectance”. The higher the “specular reflectance + diffuse reflectance”, the higher the light reflectance, so the “equipment efficiency” increases. The lower the “specular reflectance” and the lower “diffuse reflectance”, the more the light reflection direction can be controlled. "Equipment efficiency" increases.
As shown in FIG. 25, in the order of item number 1, item number 2, and item number 3, “specular reflectance” is high, “diffuse reflectance” is low, and “equipment efficiency” is high.

The lighting fixture 100 in the first embodiment has the following advantages over the conventional lighting fixture in which the reflective shade formed by the drawing process is vapor-deposited with silver or aluminum in the subsequent process.
Since a reflective shade (polyhedral reflective shade 110) obtained by molding a material deposited in a flat state (for example, a miro material) in a subsequent process is used, a stable and uniform reflectivity can be obtained with respect to performing deposition after molding. can get.
In addition, since the conventional lighting fixtures to be vapor-deposited in the subsequent process are limited in the vapor deposition facilities as the size increases, the lighting fixture 100 in Embodiment 1 can be manufactured at a lower cost than the conventional lighting fixtures. This is possible, and the larger the opening diameter of the reflective shade, the higher the effect.
In the conventional lighting fixture configured with a polyhedral reflector having a high reflectivity up to the vicinity of the opening, the glare is noticeable when the lighting fixture is viewed from the front direction with respect to the reflecting surface of the polyhedron. Since the instrument 100 is a normal deep-drawn reflective shade (the deep-drawn reflective shade 120) up to an angle equal to or less than the lamp shading angle, no glare is generated.

In the first embodiment, the polyhedral reflecting shade 110 may form a curved body by drawing or the like instead of a polyhedron as long as it has a high reflectance.
Further, the deep-drawn reflecting shade 120 is a reflectance that does not generate glare, and may be a polyhedron instead of a curved surface as long as the lamp 130 and the inner surface of the polyhedral reflecting shade 110 can be shielded at the lamp shading angle.

The perspective view from the lower part which shows the lighting fixture 100 in Embodiment 1. FIG. FIG. 3 is a perspective view from above showing the lighting apparatus 100 according to the first embodiment. FIG. 3 is a front cross-sectional view of lighting apparatus 100 in the first embodiment. The perspective view from the upper side which decomposed | disassembled the polyhedral reflective shade 110 in Embodiment 1. FIG. FIG. 3 is a front view of reflector A 111a after bending in the first embodiment. The left view of reflecting plate A 111a after the bending in Embodiment 1. FIG. Plan view from _{F a} direction of the reflection plate A 111a after folding in the first embodiment. The perspective view from the upper direction of reflecting plate A 111a after the bending in Embodiment 1. FIG. The left view which expanded the A1 part of reflecting plate A 111a in Embodiment 1. FIG. The top view which expanded A1 part of reflecting plate A 111a in Embodiment 1. FIG. The front view which expanded A6 part of reflecting plate A111a in Embodiment 1. FIG. The front view of reflecting plate B111b after the bending in Embodiment 1. FIG. The left view of reflecting plate B111b after bending in Embodiment 1. FIG. Plan view from _{F b} direction of the reflection plate B 111b after folding in the first embodiment. The perspective view from the upper direction of reflecting plate B111b after the bending in Embodiment 1. FIG. The front view which expanded B1 part of reflecting plate B111b in Embodiment 1. FIG. The front view which joined reflector A111a and reflector B111b in Embodiment 1. FIG. The front view which expanded the junction part (beta) before joining reflector A111a and reflector B111b in Embodiment 1. FIG. The front view which expanded the junction part (beta) at the time of joining reflector A111a and reflector B111b in Embodiment 1. FIG. The front view which expanded the junction part (alpha) before joining reflector A111a and reflector B111b in Embodiment 1. FIG. The front view which expanded the junction part (alpha) at the time of joining the reflecting plate A 111a and the reflecting plate B 111b in Embodiment 1. FIG. FIG. 3 is a front cross-sectional view of the embedded lighting fixture 100 in the first embodiment. FIG. 3 is a front cross-sectional view of the hanging type lighting apparatus 100 according to the first embodiment. FIG. 3 is a front cross-sectional view of the hanging type lighting apparatus 100 according to the first embodiment. The table | surface which shows the comparison result of the light reflectance of the lighting fixture 100 in Embodiment 1, and the conventional lighting fixture, and fixture efficiency. The front sectional view and bottom half figure which show the shape and size of the conventional lighting fixture. The front sectional view and bottom half figure showing the shape and size of lighting fixture 100 in Embodiment 1.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 Lighting fixture, 110 Polyhedral reflector, 111 Polyhedral reflector, 111a Reflector A, 111b Reflector B, 112 Slit, 113 Claw, 114 Notch, 114a Notch A, 114b Notch B, 120 Deep drawing reflector 130 lamps, 140 power supply units, 141 sockets, 150 installation tools, 151 deep drawing shade fittings, 152 fixtures, 153 fixture slide grooves, 154 collars, 900 ceilings.

Claims (8)

A bowl-shaped main shade formed with a plurality of component plates, and having a discharge port in which a lamp is arranged inside and emits lamp light;
An illuminating device comprising an attached shade that forms a skirt-shaped cylindrical portion from the discharge port of the main shade. A bowl-shaped main shade having an inner surface on which the lamp is disposed and reflecting the lamp light and an outlet for emitting the lamp light;
While forming a skirt-like tube portion from the outlet of the main shade,
An illuminating device comprising an attached shade having a height for shielding an inner surface of the main shade at a lamp shade angle. The main shade is
The lighting apparatus according to claim 1, wherein three or more component plates are arranged in a circumferential shape. The main shade is
The lighting apparatus according to any one of claims 1 to 3, wherein the component plates are formed by arranging a number of component plates that are an integral multiple of the number of lamps arranged in a circumferential shape. The component plate is
The lighting apparatus according to claim 3, comprising at least one of a claw and a slit into which the adjacent component plates are fitted. The component plate is
The lighting fixture according to any one of claims 3 to 5, further comprising at least one of an upper notch and a lower notch into which the adjacent component plates are fitted. The component plate is
The lighting fixture according to any one of claims 3 to 6, wherein the lighting fixture is a polyhedral plate having a cross-section formed into a bow shape by bending a triangular, trapezoidal, or protector-shaped flat plate. The main shade is
The lighting fixture according to any one of claims 1 to 7, wherein the lighting fixture has a surface having a higher reflectance than that of the surface of the attached shade.

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