JP2000106031A - Lighting system for stairs - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system effectively lightening one's foot when a person goes up and down stairs. SOLUTION: A plurality of illumination units 4 for lightening footboards 3 of stairs 2 are arranged every distances of the footboards 3 in a side plate 5 of the stairs 2. A wiring groove for arranging a power supply wire to the illumination units 4 is preferable to be formed in the side plate 5. The light source of the illumination unit 4 is formed with an LED 42, and the LED 42 is preferable to be aslant housed in a housing case 44 so as to turn the optical axis 43 on the surface of the footboards 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device for stairs.

[0002]

2. Description of the Related Art Conventionally, stairs provided in a building such as a house are often provided with a main lighting fixture for indoor use as a lighting device for the stairs on a ceiling near the stairs. However, when the stairs are illuminated from above by the main luminaire when walking on the stairs at midnight or the like, the steps may be difficult to confirm because they are too bright and dazzling, and therefore, the main luminaire is not turned on. There was also.

[0003] However, lighting the main lighting fixture,
In either case, a small lighting fixture S called a step light is buried under the wall W of the staircase 2 as shown in FIG. 6, for example, as shown in FIG. It is proposed and implemented to illuminate the stairs 2 by means of.

[0004]

However, in the lighting by the lighting fixture S from the wall surface W as exemplified in FIG. 6 described above, the lighting is not performed for each tread 3 of the stairs 2. As a result, there is a problem that the surroundings of the lighting fixture S become bright, but there are also the treads 3 to which the illumination does not reach, so that the treads 3 of each step cannot be uniformly and brightly illuminated. Also, the visibility of the front edge portion of the step board 3 of each step is poor, and there is a case where the step board 3 is stepped off. The development of the device has been desired.

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 device for stairs that effectively illuminates a foot when a person goes up and down stairs.

[0006]

In order to achieve the above object, a lighting device for stairs according to a first aspect of the present invention includes a plurality of lighting units for illuminating a tread on a stair at a distance between each tread on a side plate of the stair. Arranged.

Therefore, in this case, each of the treads is illuminated on the side plate of the stairs by a plurality of lighting units arranged at intervals of the treads.

[0008] Further, the staircase lighting device according to the second aspect of the present invention,
The side plate according to claim 1 is provided with a wiring groove for passing a power supply line to the lighting unit.

Therefore, in this case, the power supply line to the lighting unit provided on the side plate is connected to the wiring groove formed on the side plate.

Further, the lighting device for stairs according to claim 3 is
The lighting unit according to claim 1 or 2, wherein the light source is LE.
The LED element is housed in a housing case with the LED element being directed obliquely so as to face the tread surface.

Therefore, in this case, each tread is illuminated by the light source of the LED element which is accommodated obliquely in the accommodation case of the lighting unit so that its optical axis is directed to the tread surface.

Further, the staircase lighting device according to claim 4 is
The storage case for the lighting unit according to claim 3. Its outer shape is substantially cylindrical and has a positioning piece for preventing rotation, and a circular fixing hole having a positioning recess corresponding to the housing case is provided in the wiring groove of the side plate.

Therefore, in this case, the outer case is substantially cylindrical and the positioning case for preventing rotation is provided in the housing case protruding.
The lighting unit formed by housing the ED element is fixed to a circular fixing hole having a positioning recess provided in the wiring groove of the side plate.

[0014]

FIG. 1 to FIG. 5 show an embodiment corresponding to all of claims 1 to 4 of the present invention.
It is a perspective view showing the schematic structure of the lighting device for stairs of one embodiment of the present invention. 2A and 2B show a schematic configuration of a lighting unit of the lighting device for stairs, wherein FIG. 2A is a front view and FIG. 2B is a side sectional view. FIG. 3 is a front view of a front cover of a lighting unit of the lighting device for stairs. FIG. 4 is an explanatory diagram showing a side plate of the lighting device for stairs. FIG. 5 is an explanatory diagram of a wiring groove cover of the lighting device for stairs.

The staircase lighting device 1 of this embodiment includes a plurality of lighting units 4 for lighting the treads 3 of the staircase 2.
On each side plate 5 at intervals of the treads 3.

Further, in the staircase lighting device 1 of this embodiment, a wiring groove 51 for passing the power supply line 54 of the lighting unit 4 is formed in the side plate 5. In the staircase lighting device 1 of the embodiment, the lighting unit 4
Forms the light source with the LED element 42,
The LED element 42 is housed in a housing case 44 with its optical axis 43 obliquely directed toward the surface of the tread plate 3.
In the staircase lighting device 1 of the embodiment, the housing case 44 of the lighting unit 4 is not provided. Its outer shape is substantially cylindrical and has a positioning piece 45 for preventing rotation.
1 also has a circular fixing hole 52 provided with a positioning recess 53 corresponding to the storage case 44.

More specifically, the staircase lighting device 1 is installed on a staircase 2 provided in a building such as a house, and a plurality of lighting units 4 are attached to a side plate 5 on one side of the staircase 2. , And the light source of the illumination unit 4 is formed so that the upper surface of each tread plate 3 is brightly illuminated in the area where the foot is placed.

In this case, as shown in FIG. 2, the illuminating unit 4 is made of synthetic resin such that the LED element 42 of the dome lens type body serving as a light source has its optical axis 43 having a downward angle of about 20 degrees. The LED element 42 is provided with a connector 46 at an end thereof.
1 are connected and formed. In this case, columnar positioning pieces 45, 45 are provided at the edges of the opening of the accommodation case 44.
Is protruding. This lighting unit 4 has a height H of a side plate 5 to be described later from the tread plate 3 of the staircase 2 of approximately 135 mm.
It is mounted in a fixing hole 52 provided at a position where As a result, the LED element 42 can effectively illuminate a range of approximately 300 mm near the center of the upper surface of the tread plate 3 where a person places his / her foot, although the directional angle of the radiated light by the dome lens is approximately 30 degrees. It becomes possible.

According to the report of the physique of a person, it is considered that, in many cases, when a person walks on the stairs, he or she puts his / her foot within a range of 300 mm near the approximate center position on the tread plate 3 (“Japan Industrial Technology Institute”). The average buttock width of an adult in a human physique survey report, 1984, boy 31.8cm girl 3
2.4 cm). In addition, a handrail may be provided on the stairs 2. In this case, although a slight individual difference is assumed, a range of approximately 300 mm at the center of the tread is illuminated. Is considered to be put. Therefore, it is sufficient to secure an irradiation range of at least 300 mm substantially at the center of the tread plate 3.

That is, according to the above configuration, for example, an LED
When 20 mA of the rated current consumption of the element 42 is applied, the average illuminance in the above irradiation range is 1.49 Lx, which is the illuminance according to the JIS standard for the staircase light at midnight.
Ｌ2Lx (quoted from JISZ9110). Therefore, one LED
By using the element 42 per one step of the tread 3, it is possible to form a long-life staircase lighting device with low cost.

In order to supply power to the plurality of LED elements 42 arranged at intervals between the treads 3 of the stairs 2,
A small DC power supply circuit insulated from a commercial AC power supply by a transformer is used. The power supply device (not shown) for supplying the small power is provided, for example, in a space on the back side of the lowermost tread plate 3 so as not to obstruct the up and down movement of the stairs 2 of the person, and is provided in a side plate 5 described later. Power is supplied to the lighting unit 4 via the power supply line 54. The power supply line 54 is provided with branch connectors (not shown) connected to the connector 46 at the end of the external electric wire 41 of the lighting unit 4 at predetermined intervals, and the lighting unit 4 is connected via the branch connector. Power is supplied to the

As shown in FIG. 4, a wiring groove 51 for passing a power supply line 54 is formed in the side plate 5 in an oblique straight line along the tread plate 3, and in this case, A circular fixing hole 52 having an inner diameter substantially the same as the outer shape of the housing case 44 for fixing the lighting unit 4 on the wiring groove 51.
Are formed at substantially the same interval as the interval D between the treads 3 so that the height H from the treads 3 is approximately 135 mm. Further, positioning holes 53, 5, 5
3 is formed so as to be vertically positioned so as to correspond to the positioning pieces 45 provided on the housing case 44 of the lighting unit 4.

The wiring groove 51 is made of, for example, a soft synthetic resin as shown in FIG. 5, and is formed on the back side of a long flat plate 58 along the longitudinal direction. A cover member 57 having locking portions 59, 59 projecting at the same interval is fixed, and the fixing hole 52 is made of synthetic resin to cover the periphery thereof as shown in FIG. A flat decorative cover 47 having an opening 48 for exposing the bottom of the storage case 44 is provided.

In the construction of the staircase lighting device 1 having the above configuration, first, for example, the above-mentioned power supply device for supplying small power is provided in a space on the back side of the lowest stepboard 3 of the staircase 2. The supply line 54 is routed from the power supply device along the wiring groove 51 formed in the side plate 5 and in such a manner that the branch connector substantially coincides with the position of the fixing hole 52. Then, the lighting unit 4 has the housing case 44 fitted in the fixing hole 52 and the LE inside the housing.
Connector 4 at the end of external electric wire 41 connected to D element 42
6 is connected to a branch connector provided on the power supply line 54.

In this case, the gradient of the staircase 2 varies depending on each construction site, but the outer shape is substantially cylindrical, and the LE is installed in the housing case 44 on which the positioning pieces 45 for preventing rotation are protruded.
The lighting unit 4 formed by housing the D element 42 is
Positioning recesses 53, 5 provided in wiring grooves 51 of side plate 5
Each of the plurality of lighting units 4 which are fixed to the circular fixing holes 52 provided with the stairs 2 and which are arranged on the side plate 5 of the stairs 2 at intervals of the treads 3 at predetermined angles from the LED elements 42. 3 is illuminated. That is, when the staircase lighting device 1 is used, the staircase lighting device 1 uses a light source of the LED element 42 which is housed obliquely in the housing case 44 of the lighting unit 4 so that the optical axis 43 faces the surface of the tread plate 3. Each tread 3
Thus, a long-life staircase lighting device can be formed at low cost.

Therefore, according to the lighting device for stairs 1 described above, each tread 3 is illuminated on the side plate 5 of the stair 2 by the plurality of lighting units 4 arranged at intervals of the treads 3. When people go up and down stairs, they can effectively illuminate their feet.

The lighting unit 4 provided on the side plate 5
Since the power supply line 54 is supplied to the wiring groove 51 formed in the side plate 5, the power supply line 54 can supply the power to the lighting unit 4 without being noticeable. Aesthetics can be improved. In addition, since each of the treads 3 is illuminated by the light source of the LED element 42 which is obliquely accommodated in the accommodation case 44 of the lighting unit 4 so that its optical axis 43 faces the surface of the tread 3, the upper surface of the tread 3 is substantially removed. It is possible to effectively illuminate the area where people near the center place their feet. An illumination unit 4 formed by accommodating an LED element 42 is provided in a wiring groove 51 of a side plate 5 in a housing case 44 having a substantially cylindrical outer shape and provided with positioning pieces 45 for rotation prevention. The illumination unit 4 is fixed to the circular fixing hole 52 having the positioning recesses 53, 53 provided.
Can be easily installed so as to illuminate the vicinity of the approximate center of the upper surface of each tread plate 3, thereby improving workability.

[0028]

As described above, in the lighting device for stairs according to the first aspect of the present invention, each of the treads is illuminated by a plurality of lighting units disposed on the side plate of the stairs at intervals of the treads. Therefore, when people go up and down the stairs, they can effectively illuminate their feet.

The lighting device for stairs according to claim 2 is
In addition to the effects of claim 1, the power supply line to the lighting unit provided on the side plate is passed through the wiring groove formed in the side plate, so that the power supply line is not noticeable to the lighting unit. Power can be supplied, thereby improving the aesthetic appearance.

The staircase lighting device according to claim 3 is
In addition to the effects of the first or second aspect, each tread is illuminated by a light source of an LED element that is obliquely accommodated in the accommodation case of the lighting unit so that its optical axis is directed to the tread surface. It is possible to effectively illuminate the area where the person puts his or her feet near the center of the upper surface.

The staircase lighting device according to claim 4 is
In addition to the effects of the third embodiment, the outer case is provided with a substantially cylindrical outer case in which a positioning piece for preventing rotation is projected.
Since the lighting unit formed by housing the D element is fixed to the circular fixing hole having the positioning recess provided in the wiring groove of the side plate, the lighting unit can be easily mounted on the upper surface of each tread plate. It can be installed so as to illuminate the area near the center, thereby improving workability.

[0032]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of a staircase lighting device according to an embodiment of the present invention.

FIG. 2 shows a schematic configuration of a lighting unit of the lighting device for stairs, wherein (a) is a front view and (b) is a side sectional view.

FIG. 3 is a front view of a front cover of a lighting unit of the staircase lighting device.

FIG. 4 is an explanatory view showing a side plate of the lighting device for stairs.

FIG. 5 is an explanatory view of a wiring groove cover of the staircase lighting device.

FIG. 6 is a perspective view showing a staircase lighting device as a conventional example of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 stair lighting device 2 stairs 3 tread plate 4 lighting unit 42 LED element 43 optical axis 44 housing case 45 positioning piece 5 side plate 51 wiring groove 52 fixing hole 53 recess 54 power supply line

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoshiyasu Ito 1048 Kazuma Kadoma, Kadoma-shi, Osaka F-term in Matsushita Electric Works, Ltd. (reference) 2E101 CC01 GG01 HH15 JJ21 3K014 AA01 PB02

Claims (4)

[Claims] 1. A staircase lighting device comprising a plurality of lighting units for stairway stepboard lighting arranged on a side plate of the staircase at intervals of each stepboard. 2. The side plate is provided with a wiring groove for passing a power supply line to the lighting unit.
The lighting device for stairs as described. 3. The lighting unit is characterized in that the light source is formed by an LED element, and the LED element is accommodated in an accommodation case with its optical axis obliquely directed to the surface of the tread plate. The staircase lighting device according to claim 1. 4. A housing for the lighting unit. 4. A circular fixing hole having a substantially cylindrical outer shape and a positioning piece for preventing rotation, and a wiring groove in a side plate provided with a positioning recess corresponding to the housing case. The lighting device for stairs as described.