JP6296328B2 - lighting equipment - Google Patents

Description

  The present invention relates to a luminaire that irradiates light from a light source attached to an elevation surface via a light guide member.

2. Description of the Related Art Conventionally, there has been known a lighting fixture that irradiates light from an LED light source attached to an elevation surface such as a wall surface through a light guide member (for example, see Patent Document 1).
As shown in FIG. 11A and FIG. 11B, the lighting fixture (lighting device) 100 described in Patent Document 1 is used by being attached to the ceiling 102 of the bathroom unit 101.
The ceiling 102 is composed of two ceiling members 103, and between the ceiling members 103, two holding pieces 104 that protrude from the ceiling and are exposed in the bathroom are attached. The luminaire 100 is held between two holding pieces 104.

In the lighting device 100, a long rectangular parallelepiped light guide member (light guide material) 105 is held between two holding pieces 104, and the lower end surface of the light guide member 105 extends from the ceiling 102 into the bathroom. Exposed to.
A light source unit 106 having an LED light source 107 facing the upper end surface of the light guide member 105 is attached to the upper portion of the light guide member 105.
Therefore, the light emitted from the LED light source 107 of the light source unit 106 enters the upper end surface of the light guide member 105 and is irradiated into the bathroom from the lower end surface of the light guide member 105. Thereby, the inside of the bathroom is illuminated by the linear lighting fixture 100.

JP 2011-233240 A

In the conventional lighting fixture described in Patent Document 1 described above, light incident from the upper end surface of the light guide member is emitted from the lower end surface to illuminate the interior of the bathroom such as a bathroom unit. At this time, if the light emitted from the lower end face is directly reflected on the mirror provided on the wall surface of the bathroom unit or the like, or the light source itself is reflected in the mirror, the mirror user feels dazzling. Therefore, there is a desire to reduce this glare.
However, on the other hand, there is also a desire to shine light on the user's face to make it easier to see, and lighting that satisfies both of these demands is desired.
As illumination that satisfies such demands, it is possible to reduce glare by dispersing light and brightening the entire room rather than spotting light only on the face of the user standing in front of the mirror. It seems preferable.

  The present invention was made in order to solve the conventional problem, the light emitted from the light source does not hit the mirror, and efficiently shines light on the face of the user standing in front of the mirror from outside the field of view, An object of the present invention is to provide a lighting fixture that can reduce glare by illuminating a ceiling and indirectly illuminating a room with reflected light.

The lighting apparatus of the present invention is arranged in the vicinity of a mirror attached along the elevation surface along the elevation surface, and a linear light source that emits light toward the opposite side of the elevation surface, A strip-shaped light guide member disposed with the incident end face facing the light source, and a first surface intersecting the incident end face of the light guide member and intersecting the thickness direction of the light guide member A flat surface provided, and a plurality of ribs provided on a second surface facing away from the first surface, each rib being parallel to a continuous direction of the light source and the incident An open end surface opposite to the end surface intersects the first surface and the second surface, and a ridge line on the second surface side relative to the ridge line on the first surface side is the light source with respect to the incident end surface. It is the slope which protrudes in the emission direction of the light from .

  In the lighting fixture of the present invention, the light source is disposed horizontally along the surface direction of the elevation surface, and the light guide member is disposed such that the second surface faces away from the mirror. .

  In the present invention, the light emitted from the light source enters the light guide member from the incident end surface, and is guided from the first surface and the second surface that intersect the thickness direction of the light guide member while being guided through the light guide member. Since it is emitted, it is dispersed vertically. For this reason, the light emitted from the light source does not strike the mirror, and it efficiently shines on the face of the user standing in front of the mirror from the outside of the field of view, and the light is also applied to the ceiling, and the reflected light reflects the room indirectly. Thus, it is possible to provide a lighting apparatus having an effect that the glare can be alleviated by illuminating automatically.

The perspective view which shows the use condition of the lighting fixture of 1st Embodiment which concerns on this invention. Sectional drawing of the lighting fixture of 1st Embodiment which concerns on this invention Plan view seen from direction III in FIG. A graph showing the intensity of light emitted from the light guide member Explanatory drawing which shows the path | route of the light radiate | emitted from a light guide member (A) is a side view at the time of facing up the 2nd surface of the light guide member in the lighting fixture of 2nd Embodiment which concerns on this invention, (B) faces the 2nd surface of a light guide member downward. Side view The side view of the light guide member in the lighting fixture of 3rd Embodiment which concerns on this invention. It is sectional drawing of the light guide member which shows the modification of the shape of a rib, (A) is a mountain shape, (B) is a saw blade shape, (C) is a case where a rib space | interval is changed. The perspective view which shows the modification of the lighting fixture of embodiment which concerns on this invention (A) is a side view showing a light path in the light guide member with the second surface facing upward, and (B) is a side view showing a light path in the light guide member with the second surface facing down. (A) is a perspective view which shows the attachment structure of the conventional lighting fixture, (B) is sectional drawing of the BB position in (A).

(First embodiment)
Hereinafter, the lighting fixture of 1st Embodiment which concerns on this invention is demonstrated using drawing.
As shown in FIGS. 1 and 2, the lighting apparatus 10 </ b> A of the first embodiment can be used in a washstand unit 14 used in a washroom, a unit bath, or the like.
The wash basin unit 14 includes a wash basin 15, and a wall surface (elevation surface) 11 behind the wash basin 15. The mirror 12 is attached to the wall surface 11 along the surface direction of the wall surface 11, and the luminaire 10 </ b> A can be attached and used above (in the vicinity of) the mirror 12.
In the following description, with the luminaire 10A attached to the upper side of the mirror 12 attached to the wall surface 11 of the wash basin unit 14, the mirror 12 side is “lower” and the opposite side of the mirror 12 is “upper”. In the following description, the side of the wall 11 is “rear” and the side opposite to the wall 11 is “front”.

The lighting fixture 10 </ b> A includes a substantially rectangular box-shaped fixture body 20 attached to the wall surface 11.
The instrument main body 20 includes a rear plate 21 attached to the wall surface 11 and a front plate 22 facing the front of the rear plate 21. The rear plate 21 and the front plate 22 are connected by an upper plate 23 and a lower plate 24.
A light source 30 is attached to the front surface of the rear plate 21. The light source 30 has a generally rectangular LED substrate 31 provided over substantially the entire length in the longitudinal direction of the rear plate 21, and the LED substrate 31 extends along the longitudinal direction (the direction orthogonal to the paper surface in FIG. 2). A plurality of LEDs 32 are arranged in a straight line and mounted.
Thereby, the light source 30 irradiates light linearly toward the front side opposite to the wall surface 11.
In addition, since the instrument main body 20 is attached to the wall surface 11 horizontally, the light source 30 is arrange | positioned horizontally and emits linear light on a horizontal surface.

A chevron-shaped support member 25 is attached to the inside of the instrument body 20 with upper and lower screws 26.
A light guide member support 251 that supports one end of the strip-shaped light guide member 40 </ b> A is provided at the center in the vertical direction of the support member 25.
Accordingly, the light guide member 40 </ b> A having one end supported by the support member 25 protrudes forward of the instrument body 20 from the opening 221 provided on the front plate 22 of the instrument body 20 over the substantially entire length in the longitudinal direction.

The light guide member 40 </ b> A has a strip shape, and is horizontal with respect to the first surface 41, which is a horizontal plane intersecting the thickness direction (that is, the vertical direction) of the light guide member 40 </ b> A and the first surface 41. A second surface 42 is provided.
The second surface 42 is disposed on the opposite side of the mirror 12, that is, upward, and the first surface 41 is disposed downward.
The first surface 41 is a flat surface, and a plurality of ribs 46 are provided on the surface of the second surface 42.

The rib 46 can be formed by, for example, arranging a part of a column extending in parallel with the LED substrate 31 without gaps in the front-rear direction. The ribs 46 are provided over the entire length of the light guide member 40A in the longitudinal direction (left and right direction in FIG. 3) (see FIG. 3).
In addition, it is not necessary to provide the rib 46 in the edge part (front edge part) inserted in the instrument main body 20 in the 2nd surface 42, and supported by the support member 25. FIG.

Therefore, as shown in FIG. 4, the light emitted downward from the first surface 41 of the light guide member 40 </ b> A is light-distributed and light directed to the mirror 12 is reduced. Further, the light irradiated from the second surface 42 is irradiated to the ceiling surface 13 in the same manner as the light distribution of the first surface 41.
As a result, as shown in FIG. 5, the light emitted downward from the first surface 41 of the light guide member 40 </ b> A is light-distributed and applied to the opposite side of the mirror 12. The glare of the user M due to the reflected light can be reduced.
Further, in the second surface 42 of the light guide member 40A, a part of the light is refracted by the rib 46 and irradiated to the ceiling surface 13, and reflected by the ceiling surface 13 to illuminate the user M from above as indirect illumination. Dazzle can be reduced.

As shown in FIG. 2, one end face (rear end face) of the light guide member 40 </ b> A is an incident end face 43 provided in front of the LED 32 and substantially parallel to the entire length of the LED substrate 31.
An optical film 44 is attached to the incident end face 43, and the light from the LED 32 is diffused and incident on the light guide member 40A to reduce the graininess of the LED 32.
Thereby, even if the light irradiated from the light guide member 40A enters the eyes of the user M, the glare can be reduced (see FIG. 5).

The open end surface 45 that is the other end surface of the light guide member 40 </ b> A is an inclined surface that intersects the first surface 41 and the second surface 42.
The open end surface 45 is inclined so that the ridge line 421 on the second surface 42 side protrudes forward from the ridge line 411 on the first surface 41 side. The inclination angle θ of the open end face 45 can be about 45 °, for example.
Accordingly, the light that has been guided through the inside of the light guide member 40A and reached the tip is reflected by the inclined open end face 45 and irradiated upward, so that the amount of light irradiated upward increases (see FIG. 5). .

Next, the effect of 10 A of lighting fixtures of embodiment is demonstrated.
Near the mirror 12 attached to the wall surface 11 (here, the upper side), a linear light source 30 that emits light toward the front side opposite to the wall surface 11 is attached. In front of the light source 30, a strip-shaped light guide member 40 </ b> A having an incident end face 43 facing the light source 30 is provided. The first surface 41 intersecting the thickness direction of the light guide member 40A is a flat surface, and a plurality of ribs 46 are provided on the second surface 42 facing the opposite side (here, the upper side) with respect to the first surface 41. Is provided. The ribs 46 are continuously provided in a direction in which the light sources 30 are linearly continuous, and are provided in parallel to the front.

For this reason, the light emitted from the light source 30 enters the light guide member 40A from the incident end face 43 and is emitted from the first surface 41 and the second surface 42 while being guided through the light guide member 40A. It is possible to prevent the mirror 12 from being irradiated with strong light from 30 directly.
Moreover, since light is irradiated to the face of the user M standing in front of the mirror 12 from outside the visual field above the mirror 12, the glare can be reduced and the face of the user M can be illuminated efficiently.
Moreover, since the light emitted from the first surface 41 and the second surface 42 is emitted separately in the upper and lower directions, the dazzling can be reduced, and the light irradiated on the ceiling surface 13 is reflected on the ceiling surface 13. Reflection can indirectly illuminate the room.
In addition, since the plurality of ribs 46 are provided on the second surface 42, the light distribution of the light emitted from the second surface 42 can be changed.
Further, since the ribs 46 are provided in parallel to the continuous direction of the light source 30, the light guide member 40A can be extruded in this direction, and the manufacture becomes easy.

Further, in the lighting fixture 10 </ b> A, the light source 30 is disposed horizontally along the surface direction of the wall surface 11, and the light guide member 40 </ b> A is disposed with the second surface 42 facing away from the mirror 12.
For this reason, the light irradiated from the 2nd surface 42 is not irradiated to the mirror 12, but is irradiated toward the ceiling surface 13, can be reflected, and can illuminate the room with indirect light.

Furthermore, in the lighting fixture 10A, the open end surface 45 opposite to the incident end surface 43 intersects the first surface 41 and the second surface 42, and the second surface 42 is more than the ridge line 411 on the first surface 41 side. The side ridge line 421 is inclined so as to protrude with respect to the incident end face 43.
For this reason, the light that has passed through the light guide member 40A is reflected and irradiated to the second surface 42 side at the open end surface 45, so that much light can be irradiated to the second surface 42 side.

(Second Embodiment)
Next, the lighting fixture of 2nd Embodiment is demonstrated using drawing.
In addition, the same code | symbol is attached | subjected to the site | part which is common in 10 A of lighting fixtures of 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.
As shown to FIG. 6 (A) and FIG. 6 (B), in the light guide member 40B used for the lighting fixture 10B of 2nd Embodiment, the 1st surface 41 is rising toward the front-end | tip, The 2nd surface Reference numeral 42 is lowered toward the tip, and has a tapered wedge shape.
6A, the second surface 42 is provided upward, and in FIG. 6B, the second surface 42 is provided downward.

Even in this case, the light emitted from the light source 30 is dispersed vertically as in the lighting fixture 10A of the first embodiment described above.
For this reason, the light emitted from the light source 30 does not hit the mirror 12, and efficiently shines light on the face of the user M standing in front of the mirror 12 from outside the field of view, and also shines light on the ceiling surface 13. The room can be indirectly illuminated by reflected light to reduce glare.
Furthermore, according to the lighting fixture 10B of 2nd Embodiment, light can be irradiated from the whole surface of the 1st surface 41 and the 2nd surface 42 substantially uniformly.

(Third embodiment)
Next, the lighting fixture of 3rd Embodiment is demonstrated using drawing.
In addition, suppose that the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10A of 1st Embodiment mentioned above, and the lighting fixture 10B of 2nd Embodiment, and the overlapping description is abbreviate | omitted.
As shown in FIG. 7, in the light guide member 40 </ b> C used in the lighting fixture 10 </ b> C of the third embodiment, the transmissive portions 471 and the non-transmissive portions 472 are alternately arranged instead of providing the ribs 46 on the second surface 42. A printing unit 47 is provided. The printing unit 47 is dots (dots) or the like, and a transmissive portion and a non-transmissive portion are formed by the dots. In addition to the dots, a line-shaped impermeable portion may be used. The transmittance may be adjusted by appropriately printing a non-transparent portion such as a dot roughly or densely.

  For this reason, among the light guided into the light guide member 40C, the light reaching the transmission part 471 is guided by total reflection, and a part of the light reaching the non-transmission part 472 is diffused and transmitted. The light is emitted in the oblique direction of the light guide, and the other light is diffusely reflected and emitted in the oblique direction of the light guide via refraction at the interface. The light guide diagonal direction means the light distribution shown in FIG. Further, the non-transmissive portion 472 may be slightly non-transmissive, that is, the transmittance should be lower than that of the transmissive portion 471. Therefore, the transmittance of the non-transmissive portion 472 preferably has a transmittance of about 50% or less with respect to the transmissive portion 471.

Even in this case, the light emitted from the light source 30 is dispersed vertically as in the lighting fixture 10A of the first embodiment and the lighting fixture 10B of the second embodiment.
For this reason, the light emitted from the light source 30 does not hit the mirror 12, and efficiently shines light on the face of the user M standing in front of the mirror 12 from outside the field of view, and also shines light on the ceiling surface 13. The room can be indirectly illuminated by reflected light to reduce glare.
Furthermore, since printing has a higher degree of freedom than the formation of the ribs 46, it can be printed in various forms, and the degree of freedom of light distribution is improved.

The lighting fixture of the present invention is not limited to the above-described embodiments, and appropriate modifications and improvements can be made.
In the following description, in the lighting fixtures 10A to 10C of the first embodiment, the lighting fixtures 10A, 10B, and 10C are “lighting fixture 10”, and the light guide members 40A, 40B, and 40C are “lead”. Collectively referred to as “optical member 40”.
In each embodiment mentioned above, although illustrated about the light source 30 which has arrange | positioned granular LED32 in linear form, linear line type LED can also be used for this invention.

  Moreover, in each embodiment mentioned above, although illustrated about the case where the mirror 12 was attached to the wall surface 11 of the washstand unit 14, in addition to this, the wall of a washroom, the inner wall of a unit bath, a dresser, the mirror of a front door, It can also be applied to the door mirror of the entrance shoe box.

Moreover, in each embodiment mentioned above, although illustrated about the case where the cross-sectional shape of the rib 46 provided in the 2nd surface 42 of the light guide member 40 is circular arc shape of the same magnitude | size, not only this but various shapes Can be adopted.
FIG. 8A shows a case where a mountain-shaped rib 461 is used. FIG. 8B shows a case where a saw blade-like rib 462 is used.
Moreover, although the case where the ribs 46, 461, and 462 described above are provided at equal intervals is shown, the rib interval can be made smaller toward the tip (front side).
At this time, as shown in FIG. 8C, the interval can be reduced by reducing the shape of the rib 46 in a similar shape.

Furthermore, the modification of the lighting fixture 10 mentioned above is shown by FIG.
In the lighting fixture 10 shown in FIG. 9, the length of the fixture body 20 </ b> A that supports the light guide member 40 is smaller than the length of the light guide member 40, and supports only the central portion of the light guide member 40. .
Note that a light source 30 </ b> A having the LED substrate 31 and the LED 32 is integrally provided on the incident end face 43 side of the light guide member 40. The length of the light source 30 </ b> A extends over substantially the entire length of the light guide member 40.
Even if it does in this way, the effect | action and effect similar to the lighting fixture 10 mentioned above can be acquired.

Moreover, in each embodiment mentioned above, the case where the light guide member 40 was attached to the wall surface 11 of the wash basin unit 14 facing the 2nd surface 42 in which the rib 46 was provided up was illustrated (FIG. 2 and FIG. 2). 10 (A)). Instead, as shown in FIG. 10B, it is possible to attach the light guide member 40 with the second surface 42 facing downward.
That is, the light distribution control is slightly different between the first surface 41 side and the second surface 42 side, but light can be irradiated in the same manner as a whole.
For this reason, in any case, the illumination of the light to the mirror 12 can be reduced to illuminate the user M, the glare of the user M can be reduced, and glare can be reduced by indirect illumination. Suppressed and soft lighting can be obtained.

10A, 10B, 10C Lighting equipment 11 Wall surface (elevation)
12 mirror 15 wash basin 30 light source 40A, 40B, 40C light guide member 41 first surface 411 ridge line on first surface 42 second surface 421 ridge line on second surface 43 incident end surface 45 open end surface 46 rib

Claims (2)

A linear light source that is disposed in the vicinity of the mirror that is mounted along the vertical surface along the vertical surface, and emits light toward the opposite side of the vertical surface;
A strip-shaped light guide member disposed with the incident end face facing the light source;
A flat surface provided on the first surface that intersects the incident end surface of the light guide member and intersects the thickness direction of the light guide member;
A plurality of ribs provided on the second surface facing away from the first surface;
Each rib is parallel to the continuous direction of the light source,
The open end surface opposite to the incident end surface intersects the first surface and the second surface, and the ridge line on the second surface side with respect to the ridge line on the first surface side is with respect to the incident end surface. A luminaire which is a slope projecting in the direction of light emission from the light source . The lighting fixture according to claim 1,
The light source is disposed horizontally along the surface direction of the elevation surface;
The lighting fixture in which the light guide member is disposed with the second surface facing away from the mirror.

Images