JP2017098059A - Lighting fixture and washstand including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of radiating light with reduced intensity unevenness in a wide range, while suppressing manufacturing cost, and to provide a washstand including the same.SOLUTION: A lighting fixture 4 includes an LED light source 10 which is installed so that a light emitting surface F faces the horizontal direction or obliquely downward; and a cover 20 which is provided so as to receive emission light from the LED light source on an inner surface, and which is provided in a state of extending toward the horizontal direction of the LED light source from below of the LED light source while being separated from the LED light source. Thereby, the size of the cover is secured, and the emission light of the LED light source can be widely radiated with respect to the inner surface of the cover. Also, as the light emitted from the LED light source enters the cover at a farther position as the intensity becomes larger, intensity unevenness of the emission light from the cover can be reduced. Therefore, without using a member for diffusing light such as a light guide plate and the like, the light with reduced intensity unevenness can be radiated in a wide range, and it is advantageous costwise.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a lighting fixture and a vanity equipped with the same.

  In recent years, lighting fixtures using LEDs (Light Emitting Diodes) as light sources are becoming popular for the purpose of power saving and the like. As such a lighting fixture, for example, a lighting fixture is known in which an LED light source is arranged so as to face directly below, and a cover is provided directly below the LED light source. However, since the light emitted from the LED light source has a strong straightness, such a lighting fixture tends to cause unevenness of the light intensity.

  For this reason, the lighting fixture like patent document 1 is disclosed. The illumination device of Patent Document 1 includes an LED light source (point light source), a light guide plate, and an illumination cover. The light guide plate is disposed in front of the light emitting surface of the LED light source so that light emitted from the LED light source can enter. The illumination cover is disposed so as to cover the light guide plate, and light emitted from the light guide plate is transmitted therethrough. In this case, the light guide plate receives the light from the LED light source from the incident surface, diffuses it inside, and emits the light from an output surface wider than the incident surface. Thereby, the lighting fixture which can irradiate the light with reduced intensity unevenness in a wide range is realized.

JP 2014-175214 A

  However, although the lighting fixture of Patent Document 1 can irradiate light with reduced intensity unevenness over a wide range, the light guide plate is necessary, and thus the cost is high.

  The present invention has been made in view of the above-described conventional circumstances, and provides a lighting fixture capable of irradiating a wide range of light with reduced intensity unevenness while suppressing manufacturing costs, and a vanity equipped with the same. Providing is a problem to be solved.

The lighting apparatus of the present invention is an LED light source installed so that the light emitting surface faces in the horizontal direction or obliquely below,
A cover provided in such a manner that the emitted light from the LED light source can be received by the inner surface, and extending in a horizontal direction of the LED light source from below the LED light source while being spaced apart from the LED light source; ,
It is characterized by providing.

  This lighting fixture can receive light from the LED light source on the inner surface of the cover. The LED light source is installed so as to face in the horizontal direction or obliquely downward, and the cover is provided so as to extend while being separated from the lower side of the LED light source in the horizontal direction. With such a configuration, the LED light source is arranged so as to face directly below, and the following effects can be obtained as compared with a lighting fixture provided with a cover just below the LED light source. That is, in the lighting fixture of the present invention, the emitted light of the LED light source is more widely irradiated on the inner surface of the cover. Further, the light emitted from the LED light source enters the cover at a farther position as the intensity of the light increases. Thereby, intensity unevenness of the light emitted from the cover is reduced. For this reason, light with reduced intensity unevenness can be irradiated over a wide range without using a light diffusing member such as a light guide plate, which is advantageous in terms of cost.

The vanity of the present invention includes a mirror,
The lighting fixture disposed above the mirror;
With
The LED light source is installed such that the light emitting surface faces obliquely downward, which is the front direction of the mirror.

  In this case, the lighting fixture can irradiate a wide range without using a light guide plate. For this reason, it is advantageous in terms of cost. Moreover, the user of the vanity can be suitably illuminated by being installed so that the light emitting surface of the LED light source faces obliquely downward, which is the front direction of the mirror.

It is a front view which shows the lighting fixture of Example 1, and a vanity provided with the same. It is a side view which shows the lighting fixture of Example 1, and a vanity provided with the same. It is a perspective view which shows the state which opened the door of the mirror cabinet of Example 1. FIG. It is a schematic sectional drawing which shows the principal part of the lighting fixture of Example 1, and a mirror cabinet. It is a perspective view which shows the lighting fixture of Example 1. FIG. It is a figure which shows the light distribution curve of the LED light source which concerns on Example 1. FIG. It is the schematic which shows the principal part of the lighting fixture of Example 1. FIG.

  A preferred embodiment of the present invention will be described.

  In the lighting fixture of the present invention, the cover may have an irradiation surface that spreads in a direction intersecting the light emitting surface. In this case, irradiation can be performed not only in a direction parallel to the light emitting surface of the LED light source but also in a direction intersecting with the light emitting surface of the LED light source. Moreover, the freedom degree of the shape of a cover can be improved.

  In the lighting fixture of the present invention, the cover may have an irradiation surface that extends in a horizontal direction of the LED light source. In this case, the horizontal direction of the LED light source can also be irradiated.

The vanity of the present invention further includes a storage portion provided behind the mirror,
The LED light source may be arranged behind the mirror to irradiate the storage unit. In this case, the storage unit is suitably illuminated by the LED light source disposed behind the mirror. For this reason, the visibility at the time of putting in / out the goods to a storage part is good.

  Next, Example 1 which actualized the lighting fixture of this invention and the vanity provided with the same is demonstrated, referring drawings. In Example 1, “front” means the direction of the front side of the vanity (left direction in FIG. 2).

<Example 1>
As shown in FIGS. 1 and 2, the vanity table 1 of the first embodiment includes a base cabinet 2, a mirror cabinet 3, and a lighting fixture 4. The base cabinet 2 is provided with a basin 5 and a water rinsing device 6 on its upper surface. The mirror cabinet 3 is provided in the upper part on the back side of the base cabinet 2. As shown in FIG. 3, the mirror cabinet 3 is accessible by opening the door 7 having a mirror 7 </ b> A attached to the front surface, thereby allowing the storage unit 8 behind the mirror cabinet 3 to be accessed. The lighting fixture 4 is provided at the upper end of the mirror cabinet 3.

  As illustrated in FIGS. 4 and 5, the lighting fixture 4 includes an LED light source 10 and a cover 20. The lighting fixture 4 includes a top plate 30 formed so as to extend in a substantially horizontal direction, a back plate 40 formed so as to extend downward from one end side of the top plate, a lower end portion of the back plate 40 and the top plate 30. And a cover 20 that is attached so as to connect the other end side of each other. The surface on the space R side of the back plate 40 is formed so as to face slightly below the horizontal direction.

  As shown in FIG. 4, the LED light source 10 is attached to the space R side surface of the back plate 40 in the space R. Thereby, the LED light source 10 is configured such that the light emitting surface (irradiation surface) F faces slightly downward from the horizontal direction. The LED light source 10 is arranged behind the mirror 7A. Further, the LED light source 10 is disposed substantially immediately above the front end surface of the storage portion 8. As shown in FIG. 5, a plurality of LED light sources 10 are arranged side by side at substantially equal intervals in the width direction. The LED light source 10 employs a so-called surface mount type element.

The light from the LED light source 10 is emitted radially with an emission angle of 0 ° as a center, and its intensity shows a different distribution depending on the emission angle. FIG. 6 shows a light distribution curve of the LED light source 10 according to the first embodiment. A light distribution curve shows the intensity | strength in each direction of the light radiate | emitted radially. The intensity of light emitted from the LED light source 10 is strongest at an emission angle of 0 °, which is a direction orthogonal to the light emitting surface F, 10 °, 20 °,... (−10 °, −20 °,. ) And become weaker as the angle increases (decreases). That is, the intensity I _{theta °} of the light emitted from the LED light source 10, a maximum _{I 0 °, I 10 °>} I 20 °> I 30 °> ··· (I -10 °> I -20 °> I - _{30 °} > ...). In addition, the said output angle makes the direction orthogonal to the light emission surface F of the LED light source 10 the output angle 0 degree.

  The cover 20 is made of a translucent resin having an irradiation surface with a substantially uniform thickness. The cover 20 is disposed in front of the light emission direction of the LED light source 10 so as to cover the LED light source 10. Moreover, the cover 20 is provided in the form extended in the direction (width direction) where the LED light source 10 is arranged in parallel.

  The cover 20 includes a lower irradiation surface portion 21 and a front irradiation surface portion 22. The lower irradiation surface portion 21 is formed so as to spread in a direction intersecting with the light emitting surface F of the LED light source 10. The lower irradiation surface portion 21 has a form extending obliquely upward from the substantially vertical lower position of the LED light source 10 in front of the LED light source 10, that is, in the horizontal direction of the LED light source 10. The lower irradiation surface portion 21 is provided such that the inner surface of the upper portion 21B is farther from the LED light source 10 than the inner surface of the lower portion 21A. The front irradiation surface portion 22 is provided so as to spread in the horizontal direction of the LED light source 10. The front irradiation surface portion 22 is formed continuously from the lower irradiation surface portion 21 so as to bend upward from the upper end portion of the lower irradiation surface portion 21. Further, the cover 20 is configured so that the distance between the upper inner surface and the LED light source 10 is longer than the lower inner surface over substantially the entire cover 20.

  The lighting fixture 4 which has such a structure, and the vanity 1 provided with the same irradiate the light from the LED light source 10 as shown below.

  The LED light source 10 is installed such that its light emitting surface F faces obliquely downward. Thereby, strong light in front of the light emitting surface F of the LED light source 10 is irradiated toward the front of the mirror 7A. For this reason, stronger light is irradiated toward the face and hand of the user of the vanity 1 and the washbasin 5. Further, the LED light source 10 is arranged behind the mirror 7A. Thereby, the accommodating part 8 is illuminated suitably. Moreover, in the lighting fixture 4, since the emitted light from LED light source 10 is made to irradiate directly to the inner surface of the cover 20, members, such as a light-guide plate, are not required.

  The cover 20 is provided below the LED light source 10 and is provided in a form extending toward the front (horizontal direction) of the LED light source 10 while being separated from the LED light source 10. Thereby, the size of the cover 20 is ensured, and the emitted light of the LED light source is widely irradiated to the inner surface of the cover. For this reason, the lighting fixture 4 can irradiate light in a wide range. Moreover, since the front irradiation surface part 22 which spreads in the horizontal direction of the LED light source 10 is provided, light can be irradiated to the front. For this reason, the lighting fixture 4 can irradiate light in a wider range.

  When light from the LED light source 10 is emitted toward the inner surface of the cover 20, light having an emission angle of about 0 ° is emitted to the upper portion 21B of the lower irradiation surface portion 21 of the cover 20, as shown in FIG. Is done. Since the upper part 21B of the lower irradiation surface part 21 is located farther from the LED light source 10 than the lower part 21A of the lower irradiation surface part 21, the light from the LED light source 10 enters more widely. That is, light with an emission angle near 0 ° is diffused and irradiated on the inner surface of the upper portion 21B of the lower irradiation surface portion 21 in a wide range.

  On the other hand, light having an emission angle of about 40 ° is emitted to the lower portion 21A of the lower irradiation surface portion 21 of the cover 20 as shown in FIG. Since the lower portion 21A of the lower irradiation surface portion 21 is located closer to the LED light source 10 than the upper portion 21B of the lower irradiation surface portion 21, the light from the LED light source 10 does not spread like the light irradiated to the upper portion 21B. Incident. That is, the inner surface of the lower portion 21A of the lower irradiation surface portion 21 is irradiated with light having an emission angle of about 40 ° in a narrower range than the upper portion 21B.

  Specifically, for example, as shown in FIG. 7, the light spreading range A1 of the emission angle −10 ° to 10 ° centered on the emission angle 0 ° from the LED light source 10 is centered on the emission angle 40 °. It becomes larger than the light spread range A2 of the emission angle 30 ° to 50 °.

  By the way, as described above, the light emitted from the LED light source 10 is stronger in the vicinity of the emission angle of 0 °, which is the front surface of the light emitting surface F, than in the vicinity of the emission angle of 40 °. Therefore, in Example 1, strong light is diffused and irradiated on the inner surface of the lower irradiation surface portion 21 at a position far from the LED light source 10, and at a position closer to the LED light source 10 than at a far position. Even weak light is irradiated at high density. For this reason, when the light from the LED light source 10 passes through the cover 20, an intensity difference is suppressed. Thereby, the intensity unevenness of the light passing through the cover 4 is reduced, and the user located in the front direction of the light emitting surface F of the LED light source 10 is illuminated in a state where the cover 4 is illuminated substantially uniformly.

Furthermore, as shown in FIG. 7, the optical path length D _{θ °} in the cover 20 at each angle of the light emitted from the LED light source 10 is D _{0 °} > D _{10 °} > D _{20 °} > D _{30 °} >. It is getting smaller. That is, the emitted light from the LED light source 10 passes through the cover 20 with a shorter optical path length as its intensity becomes weaker. As a result, the cover 20 can irradiate light with suppressed intensity difference and reduced unevenness.

  Therefore, the lighting fixture 4 of Example 1 can irradiate a wide range of light with reduced intensity unevenness while suppressing the manufacturing cost. Moreover, the vanity table 1 of Example 1 is advantageous in terms of cost because the lighting fixture 4 is provided.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Example 1, the LED light source is installed such that the light emitting surface faces obliquely downward, but may be installed so that the light emitting surface faces the horizontal direction.

DESCRIPTION OF SYMBOLS 1 ... Vanity table 2 ... Base cabinet 3 ... Mirror cabinet 4 ... Lighting fixture 5 ... Wash basin 6 ... Washing basin 7 ... Door 7A ... Mirror 10 ... Light source 20 ... Cover 21 ... Lower irradiation surface part 21A ... (of lower irradiation surface part) Lower part 21B ... Upper part (lower irradiation surface part) 22 ... Front irradiation surface part 30 ... Top plate 40 ... Back plate D _{θ °} ... Optical path length (within cover) F ... Light emitting surface (of LED light source) I _{θ °} ... (LED light source) Intensity of light from ... R ... (spaced by top plate, back plate and cover)

Claims (5)

An LED light source installed such that the light-emitting surface faces horizontally or obliquely below;
A cover provided in such a manner that the emitted light from the LED light source can be received by the inner surface, and extending in a horizontal direction of the LED light source from below the LED light source while being spaced apart from the LED light source; ,
A lighting apparatus comprising:   The lighting apparatus according to claim 1, wherein the cover has an irradiation surface that spreads in a direction intersecting the light emitting surface.   The lighting device according to claim 1, wherein the cover has an irradiation surface that extends in a horizontal direction of the LED light source. Mirror,
The lighting fixture according to any one of claims 1 to 3, disposed above the mirror,
With
The said LED light source is installed so that the said light emission surface may face diagonally downward which is the front direction of the said mirror, The wash-stand vanity characterized by the above-mentioned. Furthermore, a storage part provided behind the mirror is provided,
The said LED light source is distribute | arranged back rather than the said mirror, and can irradiate the said accommodating part, The vanity stand of Claim 4 characterized by the above-mentioned.

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