JP5200862B2 - Ceiling fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling fan equipped with an illumination means which has a distinct outline of light and the light with uniformity, and is superior in interior appearance characteristics. <P>SOLUTION: This fan is equipped with a coupling part 1 fixed to a ceiling, and the body 2 in the lower part of this coupling part 1, this body 2 is formed of an electric motor 3 installed inside, a plurality of blades 5 fixed in the horizontal direction to a rotor 4 of this electric motor 3, and the body cover 6 installed at the lower part, and equipped with an illumination means 7 at the lower part of this body cover 6. The illumination means 7 is formed of nearly annular light guide body 8 and a light-emitting diode 9 which is a light source, the light guide body 8 is composed of nearly annular shaped ring part 8a, and a plurality of nearly triangular protruding parts 8b at the upper part, this protruding part 8b is equipped with a perpendicular face 8c and an inclined face 8d, and the light-emitting diode 9 which is the light source is installed in the vicinity of the perpendicular face 8c of the protruding part 8b at the upper part of the light guide body 8. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a ceiling fan provided with an illumination unit.

  The configuration of this type of conventional ceiling fan is as follows.

  The ceiling fan will be described below with reference to FIG.

  That is, a connecting portion 101 fixed to the ceiling, and a main body 102 is provided below the connecting portion 101. The main body 102 includes an electric motor 103 provided therein, and a plurality of electric motors 103 fixed in the horizontal direction. It was the structure provided with the blade | wing 104 and the illumination means 105 provided in the lower part.

For example, a similar prior document is described in Patent Document 1 below.
JP 2007-107393 A

  The problem in the above conventional example is that the interior of the illumination means is low.

  That is, in the conventional thing, the illumination means was provided in the lower surface of the ceiling fan, and this illumination served as both daytime and nighttime illumination. Therefore, in the case of a nightlight that lights at night, the illuminance is suppressed so as not to be too bright. For this reason, since the light is dimly shining, the outline of the light is blurred and the light is not uniformly emitted, and the interior property is low.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a ceiling fan provided with illumination means with a high interior property in which the outline of light is clear and the light shines uniformly.

  In order to achieve this object, the present invention includes a connecting portion fixed to the ceiling, and a main body at the lower portion of the connecting portion. The main body includes a motor provided therein, and a rotor of the motor in a horizontal direction. A plurality of blades fixed to the main body cover and a main body cover provided at a lower portion, and provided with an illuminating means at the lower portion of the main body cover, the illuminating means being formed from a substantially annular light guide and a light source. The light guide is composed of an annular part having a substantially annular shape and a plurality of substantially triangular projections on the upper part, the projections having a vertical surface and an inclined surface, and the light emitting diode as the light source is It is provided in the vicinity of the vertical surface of the protrusion at the top of the light guide, thereby achieving the initial purpose.

  As described above, the present invention includes a connecting portion fixed to the ceiling and a main body at a lower portion of the connecting portion, and the main body is fixed in a horizontal direction to an electric motor provided therein and a rotor of the electric motor. A plurality of blades and a main body cover provided at a lower portion are formed, and an illuminating means is provided at a lower portion of the main body cover. The illuminating means is formed by a substantially annular light guide and a light source, and the light guide The body is composed of an annular part having a substantially annular shape and a plurality of substantially triangular projections on the upper part, the projections having a vertical surface and an inclined surface, and the light emitting diode as the light source is the light guide It is possible to provide a ceiling fan that is provided in the vicinity of the vertical surface of the projection and is provided with illumination means with a high interior property in which the outline of light is clear and the light shines uniformly.

  That is, the illuminating means is formed of a substantially annular light guide and a light source, and the light guide is composed of a substantially annular ring part and a plurality of substantially triangular protrusions on the upper part. The light emitting diode is provided near the vertical surface of the protrusion on the upper part of the light guide.

  Thus, the light guide also shines when the light emitting diode shines, but there are mainly two paths in how light is transmitted to the light guide. First, the first path is a path through which the light from the light emitting diode is directly transmitted to the annular portion of the light guide directly under the light emitting diode. Next, the second path is a path through which the light-emitting diode light is transmitted from the vertical surface of the substantially triangular protrusion to the annular portion of the light guide through the approximately triangular protrusion.

  In this way, the light from the light emitting diode is transmitted from the two types of paths to the annular portion of the light guide so that the entire lower surface of the annular portion is illuminated.

  Based on these results, it is possible to provide a ceiling fan provided with illumination means with a high interior property in which the outline of light is clear and the light shines uniformly.

  Hereinafter, the present embodiment will be described with reference to the accompanying drawings.

(Embodiment 1)
As shown in FIGS. 1 to 7, the ceiling fan of the present embodiment includes a connecting portion 1 fixed to the ceiling and a main body 2 at the lower portion of the connecting portion 1. The main body 2 is provided with an electric motor 3 inside, and a plurality of blades 5 are fixed to the rotor 4 of the electric motor 3 in the horizontal direction.

  A main body cover 6 is provided at the lower part of the main body 2, and illumination means 7 is provided below the main body cover 6.

  The feature in this embodiment is the structure of the illumination means 7. That is, the illuminating means 7 includes a substantially annular light guide 8, a light emitting diode 9 as a light source for illuminating the light guide 8, and an illumination cover provided on the inner surface of the substantially annular light guide 8. 10 and an outer cover 11 provided on the outer surface portion. In this illuminating means 7, the light guide 8 is illuminated by the light from the light emitting diode 9 as a light source.

  The light guide 8 is formed of an annular portion 8a having a substantially annular shape, and a plurality of substantially triangular protrusions 8b on the annular portion 8a. Specifically, four protrusions 8b are provided at equal intervals on the upper part of the annular part 8a having a substantially annular shape. The protrusion 8b is substantially triangular and includes a vertical surface 8c and an inclined surface 8d. The vertical surface 8c is a surface orthogonal to the circumferential direction, and the inclined surface 8d is the upper end of the vertical surface 8c and the annular portion 8a. It is the surface which connected the upper part of. That is, the protrusion 8b has the same width as the annular portion 8a, the height is larger than the diameter of the light emitting diode 9, and the cross-sectional shape in the circumferential direction is a substantially right triangle shape. The cross-sectional shape of the annular portion 8a may be circular or rectangular according to the appearance, and the light guide 8 is transparent or translucent, and the material is acrylic resin as an example.

  The body cover 6 to which the light guide 8 is attached is bowl-shaped so as to cover the lower part of the electric motor 3 in which the plurality of blades 5 are fixed to the rotor 4. It is the shape which has the annular | circular shaped hollow part 6a which is a substantially annular shaped hollow so that an outer peripheral surface may be covered.

  The light source is a light emitting diode 9, which is provided on the lower surface of the substrate 12, above the light guide 8 and in the vicinity of the vertical surface 8 c of the protrusion 8 b. That is, the tip 9a of the light emitting diode 9 is provided in a state of facing the vertical surface 8c of the protrusion 8b. The substrate 12 is provided on the main body cover 6 and the light guide 8.

  The illumination cover 10 is provided on the inner surface of the substantially annular light guide 8 at the lower part of the main body cover 6 and has a substantially bowl shape with the upper part opened.

  With such a configuration, the light guide 8 also shines when the light emitting diode 9 shines. However, there are mainly two paths in how light is transmitted to the light guide 8.

  First, the first path is a path through which the light from the light emitting diode 9 is directly transmitted to the annular portion 8a of the light guide 8 located immediately below the light emitting diode 9. Specifically, light emitted mainly from the peripheral surface portion 9 b of the light emitting diode 9 is transmitted while spreading inside the annular portion 8 a from the upper surface of the annular portion 8 a that is the light guide 8, and directly below the light emitting diode 9. The first light emitting surface R1 which is the lower surface of the annular portion 8a is made to shine.

  Next, the second path is a path through which the light from the light emitting diode 9 is transmitted from the vertical surface 8c of the substantially triangular projection 8b to the annular portion 8a of the light guide 8 via the substantially triangular projection 8b. is there. Specifically, the light emitted mainly from the tip end portion 9a of the light emitting diode 9 passes from the vertical surface 8c of the substantially triangular projection portion 8b to the annular portion of the light guide 8 through the substantially triangular projection portion 8b. It spreads over 8a and illuminates the lower surface of the annular portion 8a. When the incident light passes through the inside of the light guide 8, the light going around from the inside of the light guide 8 is reflected around the light guide 8 at a place where the light is totally reflected. If it is not, light will come out and light that part. When both of these phenomena occur inside the light guide 8, the second light emitting surface R2 that is the lower surface of the annular portion 8a can be illuminated.

  The first light emitting surface R1 and the second light emitting surface R2 are partially overlapped to shine as a surface where the first light emitting surface R1 and the second light emitting surface R2 are connected.

  As a result, the light of the light emitting diode 9 is transmitted from the two types of paths to the annular portion 8a of the light guide 8, and the entire lower surface of the annular portion 8a can be illuminated uniformly.

  With these results, it is possible to provide a lighting means with a high interior property in which the outline of light is clear and the light shines uniformly.

  In addition, since the vertical surface 8c of the protrusion 8b of the light guide 8 is provided in the same direction in the circumferential direction, the light of the light emitting diode 9 enters the annular portion 8a of the light guide 8 from the second path. Part of the transmitted light further travels around the annular portion 8a of the light guide 8 in the same direction, and the entire annular portion 8a is illuminated, so that the entire lower surface is illuminated uniformly. I can do it.

  Further, the length of the inclined portion which is the horizontal distance from the vertical surface 8c of the protruding portion 8b of the light guide 8 to the intersecting portion where the inclined surface 8d of the protruding portion 8b and the upper surface of the annular portion 8a of the light guide 8 intersect. L1 extends from the intersection where the inclined surface 8d of the protrusion 8b intersects the upper surface of the annular portion 8a of the light guide 8 to the vertical surface 8c of the adjacent protrusion 8b via the horizontal surface 8e of the upper surface of the annular portion 8a. The horizontal plane length L2, which is the horizontal distance, is substantially the same. That is, since the substantially triangular projections 8b are provided at four positions at equal intervals on the upper surface of the annular portion 8a that is the light guide 8, the annular ring is formed between the adjacent projections 8b. There is a horizontal surface 8e corresponding to the upper surface of the portion 8a. Since the horizontal length of the horizontal plane 8e is substantially the same as the horizontal length of the substantially triangular projection 8b, the light of the light emitting diode 9 is transmitted from the second path to the annular portion 8a of the light guide 8. The second light emitting surface by the light of the light emitting diode 9 of the upstream projecting portion 8b and the downstream projecting portion 8b in which part of the light is further transmitted in the same direction through the annular portion 8a of the light guide 8 A part of the first light emitting surface by the light of the light emitting diode 9 overlaps, and the entire lower surface of the annular portion 8a can be illuminated uniformly. In addition, the color of the light emitting diode 9 that is incident from the vertical surface 8c of the protruding portion 8b provided at four places is the same color on the diagonal, and the two colors are switched, and the lights are simultaneously turned on to mix the light. You can also make a gradation.

  Further, a plurality of plate-like claw portions 8 f extending in the center direction are provided on the inner surface of the annular portion 8 a of the light guide 8. A gate portion 8g necessary for molding the light guide 8 is provided at the tip of the claw portion 8f. The claw portion 8f is a part that emits a part of the light totally reflected inside the light guide 8 to the outside of the light guide 8, and shines brightly. Also, the gate portion 8g is easily whitened and emits light. If the light from the diode 9 is transmitted, it will shine brighter than other non-whitened parts, and the light guide 8 will not emit uniformly, or the light will attenuate and the light guide 8 will not be uniformly spread. . However, the light traveling inside the light guide 8 is mainly reflected along the outer surface of the light guide 8 annular portion 8a, but part of the inner surface of the annular portion 8a is also reflected to light the claw portion 8f. By making the extending claw portion small, the portion to be shined is suppressed and attenuation of light at the claw portion is prevented, and the claw portion 8f enters the mounting hole 6b provided in the main body cover 6 to guide it to the main body cover 6. Since the light body 8 is fixed, the gate portion 8g at the tip of the claw portion 8f at the same time as being fixed is hidden by the main body cover 6 and the illumination cover 10, and the gate portion 8g that shines brighter than the non-whitened portion is whitened. Since the portion is also hidden, the light guide 8 can be illuminated uniformly.

  Further, the inner surface of the annular portion 8a is inclined in the outer peripheral direction so that the width of the lower surface of the annular portion 8a of the light guide 8 is narrowed. In this way, the inner surface of the annular portion 8a is inclined in the outer peripheral direction, and the width of the lower surface of the annular portion 8a is narrowed, so that light from the light emitting diode 9 that is the light source on the upper portion of the light guide 8 is projected. When the light is transmitted to the lower surface of the annular portion 8a via the annular portion 8a, light entering from the vertical surface 8c of the projection portion 8b having a large surface area and the upper surface of the annular portion 8a is transmitted to the annular portion 8a having a small surface area. Since it is transmitted to the lower surface, the lower surface of the light guide 8 can be illuminated uniformly.

  In addition, since the bottom surface of the annular portion 8a of the light guide 8 has been subjected to the graining process, the grained portion of the bottom surface of the annular part 8a is less than the other surface that has not been subjected to the graining process. Since it shines more, the lower surface of the light guide 8 can be made to shine uniformly.

  In addition, the light emitted from the peripheral surface portion 9b of the light emitting diode 9 is directly transmitted from the horizontal surface 8e of the light guide 8 positioned immediately below to the annular portion 8a. In order to blur the tip of the light source strongly shining, By applying a graining process to the horizontal surface 8e of the light guide 8 located immediately below the light emitting diode 9, the light source that shines strongly can be diffused and the lower surface of the light guide 8 can be illuminated uniformly. The same effect can be obtained by inserting a light diffusion sheet between the light emitting diode 9 and the horizontal surface 8e of the light guide 8 instead of the embossing process.

  Moreover, the shape of the lower part of the main body cover 6 has an annular recess 6a that is a substantially annular recess so as to cover the upper surface and the outer peripheral surface of the light guide 8.

  Thus, since the lower part of the main body cover 6 covers the outer peripheral surface of the light guide 8, the light emitted from the outer peripheral surface of the light guide 8 is reflected by the annular recess 6 a at the lower part of the main body cover 6 and again guided. Since the lower surface of the light guide 8 enters the light body 8 and shines, the lower surface of the light guide 8 can be uniformly illuminated as a result.

  Further, the side surface and the lower surface of the annular recess 6a of the main body cover 6 surrounding the light guide 8 are white.

  Thus, since the side surface and the lower surface of the annular recess 6a of the main body cover 6 covering the outer peripheral surface and the inner surface of the light guide 8 are white portions, the light is emitted from the upper surface, the outer peripheral surface, and the inner surface of the light guide 8. The light is reflected by the white part of the main body cover 6 and enters the light guide 8 again to make the lower surface of the light guide 8 shine. As a result, the lower surface of the light guide 8 can be uniformly illuminated.

  In addition, the lower surface 12a of the substrate 12 provided on the upper side of the light emitting diode 9 that is a light source has a white upper portion of the light emitting diode 9, so that the light emitted from the upper portion of the peripheral surface portion of the light emitting diode 9 Since the light is reflected by the white portion and enters the light guide 8 to make the light guide 8 shine, the light guide 8 can be made to shine more uniformly.

  As described above, the present invention includes a connecting portion fixed to the ceiling and a main body at a lower portion of the connecting portion, and the main body is fixed in a horizontal direction to an electric motor provided therein and a rotor of the electric motor. A plurality of blades and a main body cover provided at a lower portion are formed, and an illuminating means is provided at a lower portion of the main body cover. The illuminating means is formed by a substantially annular light guide and a light source, and the light guide The body is composed of an annular part having a substantially annular shape and a plurality of substantially triangular projections on the upper part, the projections having a vertical surface and an inclined surface, and the light emitting diode as the light source is the light guide Is provided in the vicinity of the vertical surface of the protrusion, and can provide a ceiling fan provided with illumination means having a high interior property in which the outline of light is clear and the light shines uniformly. is there.

  That is, the illuminating means is formed of a substantially annular light guide and a light source, and the light guide is composed of a substantially annular ring part and a plurality of substantially triangular protrusions on the upper part. The light emitting diode is provided near the vertical surface of the protrusion on the upper part of the light guide.

  Therefore, the light guide also shines when the light emitting diode shines, but there are mainly two paths in how light is transmitted to the light guide. First, the first path is a path through which the light from the light emitting diode is directly transmitted to the annular portion of the light guide directly under the light emitting diode. Next, the second path is a path through which the light-emitting diode light is transmitted from the vertical surface of the substantially triangular protrusion to the annular portion of the light guide through the approximately triangular protrusion.

  In this way, the light from the light emitting diode is transmitted from the two types of paths to the annular portion of the light guide so that the entire lower surface of the annular portion is illuminated.

  Based on these results, it is possible to provide a ceiling fan provided with illumination means with a high interior property in which the outline of light is clear and the light shines uniformly.

  Therefore, it is expected to be used as a ceiling fan for home use or office use.

Schematic sectional view of the ceiling fan according to the first embodiment of the present invention. The external perspective view of the light guide of the ceiling fan Same as above, development of ceiling fan light guide The exploded perspective view of the lighting means of the ceiling fan External view of lighting means of ceiling fan Same sectional view of the lighting means of the ceiling fan Same external perspective view of the board with ceiling fan light source Cross section of the main part of a conventional ceiling fan

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection part 2 Main body 3 Electric motor 4 Rotor 5 Blade 6 Main body cover 6a Ring-shaped hollow part 6b Mounting hole 7 Illuminating means 8 Light guide 8a Ring part 8b Projection part 8c Vertical surface 8d Inclined surface 8e Horizontal surface 8f Claw part 8g Gate part DESCRIPTION OF SYMBOLS 9 Light emitting diode 9a Front-end | tip part 9b Peripheral surface part 10 Illumination cover 11 Exterior cover 12 Board | substrate 12a Lower surface D Light-circulating direction L1 Length of inclined part L2 Length of horizontal surface R1 1st light emission surface R2 2nd light emission surface S1 Wrinkle processing range of the light guide (immediately below the light source)
S2 Wrinkle treatment range of light guide (lower surface)

Claims (10)

A connecting part fixed to the ceiling, and a main body at the lower part of the connecting part, the main body being provided with an electric motor provided therein, a plurality of blades fixed in a horizontal direction to the rotor of the electric motor, and provided at the lower part A main body cover, and illuminating means is provided at a lower portion of the main body cover, the illuminating means is formed of a substantially annular light guide and a light source, and the light guide is a substantially annular circle. The projection includes a ring portion and a plurality of substantially triangular projections on the top. The projection includes a vertical surface and an inclined surface, and the light-emitting diode serving as the light source is located above the light guide and the vertical of the projection. Ceiling fan installed near the surface. The ceiling fan according to claim 1, wherein the vertical surfaces of the protrusions of the light guide are provided in the same direction in the circumferential direction. The horizontal distance from the vertical surface of the protrusion of the light guide to the intersecting portion where the inclined surface of the protrusion and the upper surface of the annular portion of the light guide intersect is the slope of the protrusion and the inclined surface of the protrusion. The horizontal distance from the intersecting portion where the upper surface of the annular portion of the light guide body intersects to the vertical surface of the protrusion adjacent to each other through the horizontal surface of the upper surface of the annular portion is substantially the same. Crab ceiling fan. The ceiling fan according to any one of claims 1 to 3, wherein a plurality of claw portions extending in a central direction are provided on an inner surface of the annular portion of the light guide. The ceiling fan according to any one of claims 1 to 4, wherein an inner surface of the annular portion is inclined in an outer peripheral direction so that a width of a lower surface of the annular portion of the light guide is narrowed. The ceiling fan according to any one of claims 1 to 5, wherein the lower surface of the annular portion of the light guide is subjected to a texture treatment. The ceiling fan according to any one of claims 1 to 6, wherein the light guide body located immediately below the light emitting diode that is a light source is subjected to a texture treatment. The ceiling fan according to any one of claims 1 to 5, wherein a shape of a lower portion of the main body cover has an annular recess that is a substantially annular recess so as to cover an upper surface and an outer peripheral surface of the light guide. The ceiling fan according to any one of claims 5 to 8, wherein a side surface and a lower surface of the annular recess portion of the main body cover surrounding the light guide body are white. The ceiling fan according to any one of claims 1 to 9, wherein an upper portion of the light emitting diode is white on a lower surface of the substrate provided on the light emitting diode that is a light source.

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