JPH1050121A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire which uniformly radiates a surface by suppressing unevenness of luminance on the surface. SOLUTION: An indirect luminaire 1 has a fixture main body 2. A top side part 9 having an radiation opening part 8 in the upper portion of the fixture main body 2 is formed in a state of being inclined forward. A fluorescent lamp 11 is installed inside the radiation opening part 8. Both a reflector 15 containing the fluorescent lamp 11 and a controlled light reflector 16 continuously jointed to the reflector 15 are formed in a nearly paraboloidal shape. When the fluorescent lamp 11 is turned on by a lighting device 18, the controlled light reflector 16 reflects light from the fluorescent lamp 11 before reaching a wall surface 10. The quantity of light radiating a surrounding region of the fixture main body 2 installed in the wall surface 10 can be controlled, so that the entirety of the wall surface 10 can be irradiated to maintain nearly constant quantity of light.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture mounted on a flat surface.

[0002]

2. Description of the Related Art Conventionally, there has been known an indirect lighting device which illuminates a room by illuminating a wall surface, for example.

In this conventional indirect lighting device, an irradiation opening is formed in the upper surface of the device main body, and a straight tube-type fluorescent lamp is included in the irradiation opening and a wall surface is formed from the upper surface direction of the device main body. A substantially parabolic reflector for irradiation is provided.

[0004]

However, in the above-described conventional luminaire, of the illuminated wall surface, a portion having a short distance from the lamp has a very high brightness, and a far portion has a low brightness. Has the problem that the unevenness of luminance becomes large.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lighting apparatus which irradiates light uniformly with little unevenness in luminance on an irradiation surface.

[0006]

According to the first aspect of the present invention, there is provided an illuminating apparatus, comprising: a luminaire main body mounted on a flat portion; a light source including a light source, reflecting light from the light source, and transmitting light to a flat portion located near the main body. And reflection control means for suppressing the amount of light.

In this configuration, the reflection light control means includes:
Reflects the light from the light source, and suppresses the amount of light to the portion located near the appliance body, among the flat portions to which the appliance body is attached, to the same extent as the amount of light on the planar portion away from the appliance body, The entire flat portion is irradiated with a substantially constant amount of light while preventing only a portion close to the light source from becoming bright.

According to a second aspect of the present invention, in the lighting apparatus according to the first aspect, the reflection light control means controls the amount of light to a reflector provided on the apparatus main body and a plane portion located near the apparatus main body. It is a light control body to suppress.

[0009] In this configuration, in addition to the function of the first aspect, the light control member surely suppresses the amount of light to the flat portion located near the apparatus main body, and the reflector reflects light from the light source. And make it about the same as the amount of light in the plane part away from the instrument body,
While preventing only the part close to the light source from becoming bright,
The entire plane is reliably irradiated with a substantially constant amount of light.

According to a third aspect of the present invention, in the lighting apparatus of the first or second aspect, the light control member is formed by a part of the reflector.

[0011] In this configuration, claim 1 or claim 2
In addition to the operation described above, since the light control body is formed by a part of the reflector, the number of parts of the apparatus main body is reduced.

According to a fourth aspect of the present invention, in the lighting apparatus of the first or second aspect, the light control member is a louver attached to the main body of the lighting apparatus.

[0013] In this configuration, claim 1 or claim 2
In addition to the actions described above, the light control body is a louver attached to the instrument body, so that the louver shields light to a flat portion located near the instrument body and reflects light in a predetermined direction, so that efficiency is improved. The entire flat portion is irradiated with a substantially constant amount of light while preventing the lowering.

According to a fifth aspect of the present invention, in the lighting apparatus according to the fourth aspect, the louver has a plurality of louver pieces provided along the plane portion, and the louver pieces are viewed from a direction parallel to the plane portion. There is no space between the louver pieces.

In this configuration, in addition to the function described in claim 4, the louver has a plurality of louver pieces provided along the plane portion, and a gap between the louver pieces when viewed from a direction parallel to the plane portion. Therefore, the light in the vertical direction is blocked by the louver, and it is reliably prevented that only a portion close to the light source becomes bright.

According to a sixth aspect of the present invention, in the lighting apparatus according to the fifth aspect, the louver piece is formed substantially parallel to the direction of the reflection optical axis of the reflector.

In this configuration, in addition to the function of claim 5, since the louver piece is formed substantially parallel to the direction of the reflected light axis of the reflector, the light in the reflected light axis direction is blocked by the louver. It is difficult to reduce the efficiency of light from the light source.

According to a seventh aspect of the present invention, in the lighting apparatus according to any one of the first to sixth aspects, the lighting device has a longitudinal direction in a direction along the flat portion on a plane intersecting the flat portion formed on the lighting device main body. It has a narrow and narrow irradiation opening.

In this configuration, claims 1 to 6
In addition to the operation according to any one of the above, since a narrow and long irradiation opening having a longitudinal direction in a direction along the plane portion is formed in the device body on a plane intersecting with the plane portion, the device body protruding from the plane portion. Irradiating the plane portion over a wide area while suppressing the amount of

According to an eighth aspect of the present invention, there is provided the lighting fixture according to any one of the first to seventh aspects, further comprising a fixture mounting portion formed on the fixture main body.

In this configuration, claims 1 to 7
In addition to the operation described in any one of the above, since the instrument mounting portion is formed on the instrument main body, the instrument main body is directly attached to the flat portion.

According to a ninth aspect of the present invention, there is provided the luminaire according to any one of the first to eighth aspects, further comprising a lighting device provided on the luminaire main body.

In this configuration, the first to eighth aspects are as follows.
In addition to the operation described in any one of the above, since the lighting device is provided in the appliance body, each operation is achieved.

[0024]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a lighting device according to an embodiment of the present invention.

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention, and FIG. 2 is a perspective view.

In FIG. 2, reference numeral 1 denotes an indirect lighting fixture, which has a fixture main body 2;
A bottom surface portion 3 is formed on the rear side of the bottom surface portion 3 shown in FIG.
As shown in the figure, a rear part 4 is erected, and a front part 5 having an area smaller than that of the rear part 4 is erected on the front side. An instrument mounting portion (not shown) such as a screw hole for screw insertion is formed on the back surface portion 4. Further, a pair of trapezoidal side surfaces 7, 7 are erected on the left and right sides, and an upper surface 9 having a rectangular irradiation opening 8 having a longitudinal direction along the longitudinal direction of the instrument body 2 on the upper side. Is formed, and the upper body 9 is inclined from the rear side to the front side, and
Is formed in an elongated box shape as a whole.

Further, as shown in FIG.
Is mounted in such a manner that the entire back surface portion 4 is almost in contact with the wall surface 10 as a flat surface portion by the instrument mounting portion.

A straight tube-type fluorescent lamp 11 as a light source is mounted inside the irradiation opening 8 along the longitudinal direction of the irradiation opening 8.
A reflector 15 that contains 11 and reflects light upward, and this reflector
A reflection light control means 17 comprising a light control reflector 16 as a light control body which is formed so that the fluorescent lamp 11 is not directly visible from the vertical upper side and which continuously reflects light directed toward the wall surface 10 downward. Is provided.

The reflection light control means 17 is connected to the instrument main body 2.
Is formed in a substantially parabolic shape having a reflected optical axis slightly inclined forward from the central axis of the optical disk.

On the other hand, a lighting device 18 is provided inside the appliance body 2.
And a power supply terminal block for connecting a power supply line (not shown).

Next, using the indirect lighting device 1 described above,
An experimental result when 10 is irradiated will be described with reference to a graph shown in FIG.

FIG. 3 is a graph comparing the brightness of the wall surface 10 illuminated by the indirect lighting device 1 with the brightness of the wall surface illuminated by the conventional example, and the solid line A indicates the result of the indirect lighting device 1. The dashed line B shows the result of the conventional example.

As a result, in this indirect lighting device 1, the brightness of the illuminated wall surface 10 near the device body 2 is low,
It can be seen that unevenness in the brightness of the wall surface 10 can be reduced.

The reason is that the direct light from the fluorescent lamp 11 to the wall surface 10 and the light reflected by the reflector 15 are reflected by the light control reflector 16 so that In addition, the amount of light to a portion located near the appliance body 2 is suppressed, and is substantially equal to the amount of light to the wall surface 10 remote from the appliance body 2. Therefore, only the portion near the fluorescent lamp 11 is prevented from becoming bright, and the entire wall surface 10 is irradiated with a substantially constant amount of light.

FIG. 4 is a longitudinal sectional view showing a second embodiment of the present invention.

In FIG. 4, reference numeral 21 denotes an indirect lighting device with a louver. The louver 23 is provided.

On the upper side of the instrument body 2, the instrument body 2
An upper surface portion 26 having a rectangular irradiation opening 25 having a longitudinal direction along the longitudinal direction is formed, and the upper surface portion 26 is formed to be inclined from the rear side to the front side.

The irradiation opening 25 is opened substantially over the entire upper surface 26.

Inside the irradiation opening 25, a straight tube type fluorescent lamp 11 as a light source is mounted along the longitudinal direction of the irradiation opening 25, and the fluorescent lamp 11
Reflector 27 that reflects light from the fluorescent lamp 11
Is provided. And this reflector 27 and louver
23 constitutes the reflection light control means 17.

The reflector 27 is formed in a substantially parabolic shape having a reflection optical axis inclined in the opening direction of the irradiation opening 25. In addition, a louver is
Further, there is one side of 23, and the louver piece 22 prevents a gap from being generated when viewed from a vertically upper direction parallel to the wall surface 10 and is substantially parallel to the reflected optical axis direction of the reflector 27, A louver 23 is mounted on the upper surface 26 so as to cover almost half the rectangular irradiation opening 25 on the upper side of the instrument body 2.

The second embodiment has the same effect as the first embodiment as shown in FIG.

The reason for this is that the light from the fluorescent lamp 11 to the wall 10 is shielded by the louver 23 and reflected in a predetermined direction, so that The amount of light to the portion located in the vicinity of 2 is suppressed, and is substantially the same as the amount of light on the wall surface 10 distant from the instrument body 2. Therefore, only the portion near the fluorescent lamp 11 is prevented from becoming bright, and the entire wall surface 10 is irradiated with a substantially constant amount of light.

At this time, since the light in the direction of the reflected light axis from the fluorescent lamp 11 is almost parallel to the louver 23, the louver 23
, The light from the fluorescent lamp 11 is less likely to be reduced in efficiency.

[0044]

According to the lighting apparatus of the first aspect, the light from the light source is reflected by the reflection light control means, and the light to the portion of the flat portion on which the apparatus main body is mounted, which is located near the apparatus main body. The amount of light is suppressed, and the amount of light is almost the same as the amount of light in the flat part distant from the instrument body, and the entire flat part is irradiated with a substantially constant amount of light while preventing only the part close to the light source from being brightened. Therefore, it is possible to avoid giving the user discomfort.

According to the lighting apparatus of the second aspect, in addition to the effect of the first aspect, the amount of light to the flat portion located near the apparatus main body is reliably suppressed by the light control body, and the light source is controlled by the reflector. The light from the light source is reflected, and it is almost the same as the amount of light in the flat part distant from the instrument body, and while the part close to the light source is not brightened, the amount of light in the entire flat part is almost constant. To avoid giving the user discomfort.

According to the lighting apparatus of the third aspect, in addition to the effects of the first or second aspect, since the light control body is formed by a part of the reflector, the number of parts of the apparatus body is small, and the manufacturing cost is reduced. Can be reduced.

According to the lighting apparatus of the fourth aspect, in addition to the effect of the first or second aspect, since the light control body is a louver attached to the apparatus main body, the louver is moved to a flat portion located near the apparatus main body. Is shielded, and the light is reflected in a predetermined direction, so that a decrease in efficiency can be prevented, and the entire flat portion can be irradiated with a substantially constant amount of light.

According to the luminaire of the fifth aspect, in addition to the effect of the fourth aspect, the louver has a plurality of louver pieces provided along the plane portion, and the louver pieces are provided in a direction parallel to the plane portion. Since there is no gap between the louver pieces when viewed, the louver shields the light in the vertical direction, so that it is possible to reliably prevent only the portion near the light source from becoming bright.

According to the illumination device of the sixth aspect, in addition to the effect of the fifth aspect, since the louver piece is formed substantially parallel to the direction of the reflected light axis of the reflector, the louver allows the reflected light to travel in the reflected light axis direction. Light is less likely to be blocked, and a decrease in the efficiency of light from the light source can be reliably prevented.

According to the illumination device of the seventh aspect, in addition to the effect of any one of the first to sixth aspects, the illumination opening has a longitudinal direction in a direction along the plane portion on a plane intersecting the plane portion. Because of the narrow width, the flat portion is irradiated over a wide range while the amount of the device main body protruding from the flat portion is suppressed, so that it is possible to effectively avoid discomfort to the user.

According to the lighting device of the eighth aspect, in addition to the effects of any one of the first to seventh aspects, the device mounting portion is formed on the device main body, so that the device main body can be directly mounted on the flat portion. Thus, the burden of mounting labor can be reduced.

According to the lighting apparatus of the ninth aspect, in addition to the effects of any one of the first to eighth aspects, since the lighting device is provided in the main body of the apparatus, each effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a lighting fixture showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the lighting apparatus according to the first embodiment.

FIG. 3 is a graph showing the effect of the first embodiment and comparing the wall surface luminance distribution with the conventional example.

FIG. 4 is a longitudinal sectional view of a lighting fixture according to a second embodiment of the present invention.

FIG. 5 is a sectional view showing a part of a louver provided in the second embodiment.

FIG. 6 is a graph showing the effect of the second embodiment and comparing the wall surface luminance distribution with the conventional example.

[Explanation of symbols]

 2 Device main body 8 Irradiation opening 10 Wall surface as flat surface 11 Straight tube type fluorescent lamp as light source 15 Reflector 16 Light control reflector as light control 17 Reflection light control means 18 Lighting device 22 Louver piece 23 Light control Louver as body 27 reflector

Claims (9)

[Claims] 1. An apparatus main body attached to a flat surface portion; and a reflection light control means that includes a light source, reflects light from the light source, and suppresses an amount of light to a flat portion located near the device main body. Lighting equipment characterized by doing. 2. The reflection light control means according to claim 1, wherein the reflection light control means is a light control body provided on the tool body and a light control body for suppressing an amount of light to a flat portion located near the tool body. Lighting equipment. 3. The lighting apparatus according to claim 1, wherein the light control body is formed by a part of the reflector. 4. The lighting fixture according to claim 1, wherein the light control body is a louver attached to the fixture main body. 5. The louver has a plurality of louver pieces provided along a plane portion, and when the louver is viewed from a direction parallel to the plane portion, no gap is formed between the louver pieces. The lighting fixture as described. 6. The lighting apparatus according to claim 5, wherein the louver piece is formed substantially parallel to a direction of a reflection optical axis of the reflector. 7. An irradiation opening having a narrow width having a longitudinal direction in a direction along the plane portion on a surface intersecting with the plane portion formed in the instrument main body. 6. The lighting fixture according to any one of 6. 8. The lighting fixture according to claim 1, further comprising a fixture mounting portion formed on the fixture body. 9. The lighting fixture according to claim 1, further comprising: a lighting device provided on the fixture main body.