JPH09213275A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enlarge a stressing effect of after glow to a great extent by a comparatively simple constitution, and thereby enhance effectiveness as an index at the time of emergency evapuation. SOLUTION: The luminaire is equipped with an equipment main body 1, a reflecting plate 3A provided with a reflecting mirror disposed in the inside of the equipment main body, and with straight pipe type fluorescent lamps 4 which are so disposed as to be faced to the reflecting surface of the reflecting plate while being interspaced at a specified interval. In this case, continuous after glow properies are provided for the light emission layer of the fluorescent lamp 4, and concurrently after glow can thereby be emphasized by forming a plurality of reflecting surfaces different in a reflecting angle each in a place close to the fluorescent lamp, so that a range of an area showing after glow can thereby be widened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture,
In particular, the present invention relates to an improvement of an underside open type lighting fixture that exhibits afterglow that allows objects to be identified even after 10 minutes or more have passed since the fluorescent lamp was turned off.

[0002]

2. Description of the Related Art Generally, a fluorescent lamp for illumination is constructed by forming a light emitting layer made of a halophosphate phosphor, a rare earth phosphor or the like on the inner surface of a glass bulb.

For example, in a straight tube 40 watt type fluorescent lamp using a halophosphate phosphor, 2700 to 310 are used.
The brightness of 0 (lm) is obtained, and it is used not only in offices but also in large fields such as large stores, theaters, bathhouses, and underground malls.

In particular, in a large store, a theater, an underground mall, etc. where many people gather, it is necessary to evacuate safely and quickly even if a power failure occurs due to a disaster such as a fire or an earthquake.

Therefore, according to the Fire Defense Law and the Building Standards Law, in addition to general lighting fixtures, large-scale stores, theaters, underground malls, etc. that have a certain space or more and meet a large number of people It is obligatory to install lights and emergency lights.

In these guide lights and emergency lights, for example, a fluorescent lamp is turned on by a commercial power source in a normal state, and in an emergency (during a power failure), a built-in battery is used as a power source and the illuminance of the fluorescent lamp or a light bulb is 1 (Lx). Above and 20 to 3
It is configured to light for 0 minutes or more.

Therefore, in the event of a disaster such as an earthquake or fire, even if the commercial power supply is cut off and general lighting equipment is turned off, the illuminance on the floor is at least 1 (Lx) or more. Therefore, safe and quick evacuation is possible.

However, since these guide lights and emergency lights are expensive, the number of installations thereof is smaller than that of general lighting equipment. For example, in the case of being placed below a wall, such as a guideway light, if it is congested, there is a significant difference in visibility of the guideway light between people close to the wall and people far away. The effect will appear.

On the other hand, in a general home where there is no duty to install a guide light or an emergency light, when a power failure occurs due to a disaster, it is not easy to evacuate smoothly and quickly in the dark, and evacuation of children and the elderly is difficult. May be delayed.

[0010]

Therefore, the applicant of the present invention is
First, a fluorescent lamp having a light emitting layer made of one or more kinds of phosphors on the inner surface of a glass bulb, and a phosphor having long afterglow mixed into the light emitting layer at least 0.2 mg / cm ^2. Suggested.

According to this proposal, by using this fluorescent lamp in a lighting fixture as shown in FIG. 6 like a general fluorescent lamp for illumination, the fluorescent lamp is turned off 10
Even after a lapse of minutes, illuminance that can be identified for the time being is obtained,
It functions as a guide light or a night light when a power failure occurs. Therefore, even if the fluorescent lamp is turned off due to a power failure due to a disaster, it is possible to evacuate using the afterglow of the fluorescent lamp as an index.

By the way, the bottom open type luminaire shown in FIG. 6 is constructed as follows, for example. In the figure, reference numeral 1 denotes, for example, a gutter-shaped instrument body, which is supported by a supporting means such as an insert bolt extending from the ceiling surface so that the flange portion 1a at the lower end is brought into contact with the decorative ceiling Aa. . A lighting device (such as a ballast or an inverter lighting device) is provided inside or outside the upper surface of the fixture body 1.
2 are arranged. A reflector plate 3 having a white reflecting surface made of, for example, melamine-based paint is disposed below the inside of the instrument body 1. The reflection plate 3 is configured so that a desired light distribution can be obtained on the light irradiation surface (floor surface). Second reflecting surfaces 3b and 3b extending horizontally in a continuous manner from the reflecting surfaces 1a and 1a, and the reflecting surface 3
The third reflecting surfaces 1c, 1 which are V-shaped continuously with b, 3b
c. Further, straight tube fluorescent lamps 4 and 4 are arranged on the lower portion of the reflecting plate 3 facing the second reflecting surfaces 3b and 3b.

In particular, the above-mentioned fluorescent lamp 4 has, for example, a pair of electrodes on both ends of a glass bulb formed with a light emitting layer made of one or more kinds of phosphors containing a phosphor having a long afterglow on the inner surface. And a predetermined amount of argon and mercury are sealed in the space inside the bulb. The phosphor having a long afterglow property is, for example, a compound represented by the general formula MAl ₂ O ₄ , where M is a compound containing one or more metal elements selected from the group consisting of calcium, strontium and barium. It is a phosphorescent phosphor made into a mother crystal, and europium (Eu) is used as an activator, and dysprosium (Dy) and neodymium (Nd) are used as coactivators.
Are used.

Therefore, in a lighting fixture to which such a fluorescent lamp 4 is applied, a predetermined light distribution characteristic can be obtained under normal conditions.
Like a lighting device to which a general fluorescent lamp is applied, it is possible to perform normal environmental lighting, and it is possible to evacuate using the afterglow of the fluorescent lamp 4 as an index in the event of a power failure due to a disaster.

However, in this luminaire, since the reflecting plate 3 is designed so that the light irradiation surface has a desired light distribution characteristic, not only the effect of enhancing the afterglow by the reflecting plate 3 is poor at the time of power failure. However, since it is visually visible that only the fluorescent lamp itself is emitting light, it is desired to expand the index during an emergency evacuation.

Therefore, an object of the present invention is to provide a luminaire which can remarkably enhance the afterglow enhancement effect with a relatively simple structure and can enhance the effectiveness as an index in an emergency evacuation.

[0017]

SUMMARY OF THE INVENTION Therefore, in order to achieve the above-mentioned object, the present invention provides an instrument main body, a reflector having a mirror-like reflective surface arranged in the instrument main body, and a reflective surface of the reflector. And a straight tube type fluorescent lamp arranged facing each other with a predetermined distance provided, and a long afterglow property is given to a light emitting layer of the fluorescent lamp.

The second invention of the present invention is to provide an instrument main body,
A reflector having a mirror-like reflecting surface arranged in the instrument body;
A straight tube type fluorescent lamp arranged facing the reflecting surface of the reflecting plate and spaced apart by a predetermined distance, and imparting a long afterglow property to the light emitting layer of the fluorescent lamp, and at least the reflecting plate. Characterized by discontinuously or continuously forming a plurality of reflective surfaces having different reflection angles in a portion close to the fluorescent lamp.
A third invention is characterized in that a reflecting surface of at least a portion near the fluorescent lamp of the reflecting plate is formed so that a shape of a portion extending from the center of the fluorescent lamp to both sides is substantially symmetrical. According to the invention, a plurality of fluorescent lamps are arranged so as to face the reflecting surface of the reflecting plate, and the reflecting surface of the reflecting plate portion close to each fluorescent lamp has a shape of a portion extending from the center of each fluorescent lamp to both sides. It is characterized by being formed symmetrically.

Further, in a fifth invention of the present invention, the fluorescent lamp has a light emitting layer made of one or more kinds of phosphors on an inner surface of a glass bulb, and a phosphor constituting the light emitting layer is provided. At least part of the fluorescent lamp is configured as a phosphor having a long afterglow property, and the sixth invention is the fluorescent lamp, wherein the inner surface of the glass bulb is made of one kind or two or more kinds of phosphors. The second light emitting layer is provided, and the first light emitting layer on the glass bulb side is formed by a phosphor containing a phosphor having a long afterglow property.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. The same parts as those of the conventional example shown in FIG. 6 are designated by the same reference numerals, and detailed description thereof will be omitted. In the figure, the characteristic part of the present invention is that the reflecting surface of the reflecting plate 3A arranged inside the instrument body 1 is made a mirror surface, and at least a portion of the reflecting plate 3A close to the fluorescent lamp 4 has a plurality of different reflection angles. That is, the reflecting surface is formed discontinuously. In addition, as the reflective surface material of this mirror surface,
Aluminum, silver, etc. are preferred.

Specifically, the reflector 3A is, for example, an inclined first reflecting surface 3Aa, a second reflecting surface 3Ab having an angle θ ₁ with respect to the _first reflecting surface 3Aa, and a second reflecting surface 3Ab. Third reflecting surface 3A having an angle θ ₂ with respect to the reflecting surface 3Ab of
c, a fourth reflecting surface 3Ad having an angle θ ₃ with respect to the third reflecting surface 3Ac, a fifth reflecting surface 3Ae having an angle θ ₄ with respect to the fourth reflecting surface 3Ad, and a fifth Reflective surface 3A
A sixth reflecting surface 3Af having an angle θ ₅ with respect to e and a seventh reflecting surface 3Ag having an angle θ ₆ with respect to the sixth reflecting surface 3Af are provided for each fluorescent lamp 4, 4. It is configured to have.

In particular, the angle θ ₂ is set to be equal to the angle θ ₆ , and the angle θ ₃ is set to be equal to the angle θ ₅ , respectively.
A fourth reflecting surface 3Ad, a third reflecting surface 3Ac, and a second reflecting surface 3Ab extending to both sides from the center of the fluorescent lamps 4, 4 (the connecting portion of the fourth reflecting surface 3Ad and the fifth reflecting surface 3Ae).
The fifth reflection surface 3Ae, the sixth reflection surface 3Af, and the seventh reflection surface 3Ag are substantially symmetrical to each other. The above-mentioned angles may be set differently.

Further, the fluorescent lamps 4 and 4 are arranged under the reflector 3A with an interval of 3 to 50 mm, but it is desirable to be 7 to 30 mm for practical use. If the distance is less than 3 mm, the visual expansion of afterglow is hindered, and conversely, it is 5
If it exceeds 0 mm, not only the size of the device becomes large, but also the socket is exposed and the appearance is significantly impaired.

According to this embodiment, a long afterglow property is imparted to the light emitting layer of the fluorescent lamp 4, and a plurality of reflecting surfaces having different reflection angles are provided at least in a portion near the fluorescent lamp 4 of the reflecting plate. Since it is formed discontinuously, the light of the fluorescent lamp 4 is reflected so as to be reflected on the respective reflection surfaces. Therefore, when the light fixture is turned off, the afterglow of the fluorescent lamp can be widely viewed regardless of the position of the lower side of the light fixture, and the index can be expanded.

Further, since the reflecting surface of the reflecting plate 3A is a mirror surface, the illuminance directly below can be improved to about 1.5 times that of the luminaire shown in FIG. 6 regardless of the light distribution characteristics.

FIG. 3 shows an example of application of the present invention to a ceiling-mounted lighting fixture. The fixture body 1A having a substantially U-shaped cross section is fixed to the ceiling surface Ab by fixing means such as screws. Has been done. And, in the inside of the instrument body 1A, FIG.
A reflector 3A, which is substantially the same as the reflector shown in FIG. 2, is arranged so as to be placed on the flange portions 1a, 1a of the instrument body 1A. Two fluorescent lamps 4 and 4 are arranged at a predetermined portion of the reflection plate 3A.

In this fluorescent lamp 4, its light emitting layer is composed of first and second light emitting layers, and the first light emitting layer located on the glass bulb side is a phosphor having a long afterglow property or a long afterglow property. The second light-emitting layer is formed of a plurality of phosphors including a phosphor having a light-emitting property, and the second light-emitting layer is, for example, a halophosphate phosphor ((Ca
₁₀ (PO ₄ ) ₆ FCl: Sb / Mn, etc. and rare earth phosphors (Y ₂ O ₃ : Eu, LaPO ₄ : Ce / Tb, (Sr
CaBaMg) ₅ (PO ₄ ) ₃ Cl: Eu, etc.) or a mixture of two or more thereof. Incidentally, the deposition weight of the phosphors having long afterglow is, 1 cm ² per 0.
2 mg or more is desirable.

According to this embodiment, the same effect as that of the above-described embodiment can be obtained, and since the light emitting layer of the fluorescent lamp has a two-layer structure, the illuminance directly below can be further increased.

FIG. 4 shows another embodiment of the reflector according to the present invention. A plurality of reflectors of this reflector 3B having different reflection angles are provided in the reflector portion near the straight tube fluorescent lamp 4. Is continuously formed. This reflector 3
B is the first reflection surface 3Ba for one fluorescent lamp,
The second reflecting surface 3Bb, the third reflecting surface 3Bc, the fourth reflecting surface 3Bd, the fifth reflecting surface 3Be, the sixth reflecting surface 3Bf,
The third reflecting surface 3B has a seventh reflecting surface 3Bg.
c, the fourth reflecting surface 3Bd, the fifth reflecting surface 3Be, and the sixth reflecting surface 3Bf are formed as curved continuous surfaces. still,
The first reflecting surface 3Ba, the second reflecting surface 3Bb, and the seventh reflecting surface 3Bg are the first reflecting surface 3A of the reflecting plate 3A shown in FIG.
a, the second reflecting surface 3Ab, and the seventh reflecting surface 3Ag.

The present invention is not limited to the above-mentioned embodiment at all, and for example, two fluorescent lamps, one fluorescent lamp,
It is also possible to use three or more, and the phosphor having a long afterglow applied to the light emitting layer thereof is not limited to the phosphors described in the above-mentioned examples, and europium and dysprosium activated strontium aluminate phosphors ( Sr ₄ Al ₁₄ O ₂₅ : Eu /
Any material having a long afterglow characteristic such as Dy) can be used. Further, in the three-wavelength fluorescent lamp, one or more of three or more kinds of phosphors may be replaced with or added to a phosphor having a long afterglow property. Furthermore, the reflection plate is configured by adding a plurality of reflection surfaces with different reflection angles to the reflection plate portion located near the fluorescent lamp, but what is the reflection angle if the afterglow range is expanded? It can be set to any angle.

[0031]

Next, an experimental example will be described. The first reflecting surface 3Aa, the second reflecting surface 3Ab having an angle θ ₁ with respect to the _first reflecting surface 3Aa, and the third reflecting surface 3Ac having an angle θ ₂ with respect to the _second reflecting surface 3Ab. And a fourth reflecting surface 3Ad having an angle θ ₃ with respect to the third reflecting surface 3Ac.
And a fifth angle θ ₄ with respect to the fourth reflecting surface 3Ad.
With respect to the third reflecting surface 3Ae and the fifth reflecting surface 3Ae.
A sixth reflecting surface 3Af having ₅ and a sixth reflecting surface 3Af
And a seventh reflecting surface 3Ag having an angle θ ₆ with respect to the angle θ ₁ , the angle θ ₁ is 174 °, and the angle θ ₂ = the angle θ ₆ is 150.
°, angle θ ₃ = angle θ ₅ is 157 °, angle θ ₄ is 210
The reflector plate 3A having the structure shown in FIG. 2 set to 0 ° is placed in the embedded instrument body shown in FIG. 1, and 8 m below the reflector plate.
Two 40 W fluorescent lamps were arranged at a distance of m.

This fluorescent lamp is a europium-, dysprosium-activated strontium aluminate phosphor (Sr ₄ ) having a long afterglow on the inner surface of a glass bulb for FL40 and having an emission peak at 510 nm. Al ₁₄ O ₂₅ : Eu / D
y) is applied to form a first light-emitting layer, and a europium-activated strontium-phosphate-calcium-barium phosphor ((SrCaBaM) having an emission peak at 453 nm is formed.
g) ₅ (PO ₄ ) ₃ Cl: Eu), a cerium / terbium-activated lanthanum phosphate phosphor having an emission peak at 544 nm, and a europium-activated yttrium oxide phosphor (Y ₂ O ₃ : Eu) having an emission peak at 611 nm. And 3) in a proportion of 43.9, 23.9, and 32.2% by weight, respectively, and applied on the first light-emitting layer to manufacture.

The illuminance directly under the normal operation of this luminaire is
It was 1.5 times that of the lighting fixture shown in FIG. Further, the state of reflection of the light emitted from the fluorescent lamp on the reflecting surface is as shown in FIG. 5, whereby the afterglow seems to be shining not only on the fluorescent lamp but also on the reflecting surface. More than doubled. For this reason, the indicators for emergency evacuation will be expanded and smooth evacuation will be possible. Even when the fluorescent lamp has one light emitting layer, substantially the same effect was obtained.

[0034]

As described above, according to the present invention, the luminous layer of the fluorescent lamp is provided with long afterglow property and the reflecting surface of the reflecting plate is a mirror surface. When the light is off, the afterglow can be visually magnified not only by the fluorescent lamp but also by being reflected on the reflecting surface.

In particular, if a plurality of reflecting surfaces having different reflection angles are formed continuously or discontinuously on at least a portion of the reflecting plate close to the fluorescent lamp, when the light is turned off, the position of the lower side of the lighting fixture from which the lighting fixture is adjusted. Even after seeing, the afterglow of the fluorescent lamp can be widely viewed, and the index can be further expanded.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a front sectional view showing a second embodiment of the present invention.

FIG. 4 is a front sectional view of another embodiment of the reflector according to the present invention.

FIG. 5 is a front sectional view showing a state of reflection of afterglow.

FIG. 6 is a front sectional view of a conventional example.

[Explanation of symbols]

 1 Instrument Main Body 2 Ballast 3A, 3B Reflector Fluorescent Lamp 3Aa-3Ag, 3Ba-3Bg Reflective Surface 4 Fluorescent Lamp

Claims (6)

[Claims] 1. An instrument main body, a reflector having a mirror-like reflective surface disposed in the instrument main body, and facing the reflective surface of the reflector,
And a straight tube fluorescent lamp arranged at a predetermined interval, wherein a long afterglow property is imparted to a light emitting layer of the fluorescent lamp. 2. A device main body, a reflector having a mirror-like reflective surface arranged in the device main body, and facing the reflective surface of the reflector,
And a straight tube type fluorescent lamp arranged at a predetermined interval and provided with a long afterglow property to the light emitting layer of the fluorescent lamp, the reflection plate, at least a portion of the reflection angle near the fluorescent lamp A lighting fixture having a plurality of different reflecting surfaces formed discontinuously or continuously. 3. The reflecting surface of at least a portion of the reflector near the fluorescent lamp is formed so that the shape of the portion extending from the center of the fluorescent lamp to both sides is substantially symmetrical. Lighting equipment. 4. A form of a portion in which a plurality of fluorescent lamps are arranged so as to face the reflecting surface of the reflecting plate, and the reflecting surface of the reflecting plate portion close to each fluorescent lamp extends from the center of each fluorescent lamp to both sides. The lighting fixture according to claim 2, wherein the lighting fixture is formed so as to be substantially symmetrical. 5. The fluorescent lamp has a light emitting layer made of one or more kinds of phosphors on an inner surface of a glass bulb, and at least a part of the phosphors constituting the light emitting layer has a long afterglow property. The luminaire according to any one of claims 1 to 4, wherein the luminaire is configured as a phosphor having the same. 6. The fluorescent lamp has first and second light emitting layers made of one or more phosphors on the inner surface of the glass bulb, and the first light emitting layer on the glass bulb side is left long. The luminaire according to any one of claims 1 to 4, wherein the luminaire is formed of a fluorescent material including a fluorescent material having a light property.