JP2002254982A - Room illumination lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To illuminate a ceiling surface ranging from an opening portion of a decorative member covering a room illumination lamp to a far position. SOLUTION: The room illumination lamp 1 covered with the decorative member and arranged near the opening portion 7 of the decorative member 3 provided at the side of a ceiling comprises a light source 6 and a reflection plane 8 for reflecting a light from the light source. The ceiling surface 4 is illuminated with the light emitted from the reflection plane and then emitted from the opening portion by intersecting the opening portion at its vicinity F in the vertical direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a novel indoor lighting lamp. More specifically, the present invention relates to a technology that enables uniform illumination up to a position far from an opening in an indoor lighting lamp that illuminates a ceiling surface by emitting light from an opening having a narrow vertical width.

[0002]

2. Description of the Related Art Indoor lighting includes not only functional lighting for enhancing the visibility of a room, but also scene lighting for creating a room atmosphere.

For example, in an automobile, a light source is provided inside a pillar garnish, which is a decorative member provided to decorate the inside of a side pillar, and light from the light source is emitted from an opening provided at an upper end of the pillar garnish. For example, it is conceivable to illuminate the ceiling surface to create an atmosphere at sunset, for example.

FIG. 12 shows a configuration that can be considered as such an indoor lighting lamp.

[0005] A body b is fixed inside a pillar garnish a mounted inside the side pillar, and a light source bulb c is mounted on the body b. An opening d having a narrow width T in the vertical direction is formed at the upper end of the pillar garnish a, and a lens e is disposed between the opening d and the light source bulb c, thereby forming an interior lighting lamp f. .

The light g from the light source bulb c is emitted from the opening d via the lens e to illuminate the ceiling surface h.

[0007]

However, in the above-mentioned interior lighting lamp f, the lens e, the light source bulb c and the like pass through the opening d in a normal occupancy state in the interior of a car due to a problem in appearance. It is necessary to prevent it from being seen, and for that purpose, it is necessary to position the lens e and the light source bulb c at the place where they are retracted from the opening d.

As described above, when the light source bulb c is at the position retracted from the opening d, the vertical angle θ1 when the opening d is seen from the light emitting portion c ′ of the light source bulb c is small, Therefore, the opening d in the ceiling surface h
There is a problem that it is possible to illuminate only a portion close to the camera.

Accordingly, the present invention has been made in view of the above-mentioned circumstances,
It is an object to enable illumination to a position far from an opening.

[0010]

According to the present invention, there is provided an indoor lighting lamp including a light source and optical means for reflecting or refracting light from the light source. The light is emitted from the opening and illuminates the ceiling surface when the light intersects vertically in the vicinity of the opening.

Therefore, in the interior lighting lamp according to the present invention, the light from the light source intersects at a position close to the opening, so that the divergence angle of the light beam in the vertical direction can be increased. It becomes possible to illuminate a position far from the opening in the surface. Furthermore, by uniformly distributing the amount of light and illuminating the ceiling surface, uniform illumination of the ceiling surface becomes possible.

[0012]

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

FIGS. 1 to 5 show a first embodiment of an indoor lighting lamp according to the present invention.

As shown in FIG. 2, the interior lighting lamp 1 is arranged inside a pillar garnish 3 as a decorative member attached to the inside of a side pillar 2 in the interior of an automobile, and illuminates a ceiling surface 4. .

The interior lighting lamp 1 has a body 5 fixed to a structural member (not shown) of the automobile, and a light source bulb 6 is detachably supported on the body 5 (see FIG. 1). A main reflection surface 8 is formed at a rear portion of the body 5, that is, at a portion located opposite to the opening 7 of the pillar garnish 3 with the light source bulb 6 interposed therebetween (see FIGS. 1, 3, and 4). The main reflection surface 8 has a concave curved surface formed on the body 5, for example,
It is formed by performing a reflective surface treatment such as aluminum deposition.

A lens 9 is attached to the body 5 so as to be located between the light source bulb 6 and the opening 7. The lens is formed of a transparent material, for example, a transparent synthetic resin, and an auxiliary reflection surface 10 is formed on the inner surface of a portion other than the upper end portion by a reflection surface treatment such as aluminum vapor deposition. The part 11 is a transmission part (see FIGS. 1 and 3).

The light L1 emitted from the light source bulb 6 is directed to the main reflection surface 8, the light L1 directed to the auxiliary reflection surface 10, and the light L2 directed to the transmission portion 11 of the lens 9.
3 respectively illuminate the ceiling surface 4 through the opening 7 of the pillar garnish 3 (see FIG. 1).

Of the light L1 traveling from the light source bulb 6 to the main reflecting surface 8, the light reflected by the lower portion 8b of the main reflecting surface 8 crosses up and down at a point F immediately after passing through the transmitting portion 11 of the lens 9. Thereafter, the light passes through the opening 7 of the pillar garnish 3 while spreading vertically, and illuminates the ceiling surface 4. Also, the upper part 8a of the main reflection surface 8 of the light L1
The light reflected by the light passes through the opening 7 of the pillar garnish 3 as it is, and illuminates the ceiling surface 4.

The light L2 traveling from the light source bulb 6 to the auxiliary reflecting surface 10 is reflected by the auxiliary reflecting surface 10 toward the main reflecting surface 8, and the light reflected by the lower portion 8b of the main reflecting surface 8 is The light reflected at the upper portion 8a of the main reflection surface 8 passes through the opening 7 of the pillar garnish 3 and illuminates the ceiling surface 4 as it spreads in the vertical direction after intersecting vertically at the intersection F. .

The main reflecting surface 8 is located in each region of the ceiling surface 4 (4A, 4B, 4C, 4D, 4E, 4E,
F) is designed so that the amount of light incident thereon is substantially the same, thereby realizing uniform light emission from the ceiling surface 4. The auxiliary reflecting surface 10 is designed to reflect almost all the light L2 from the light source bulb 6 toward the auxiliary reflecting surface 10 toward the main reflecting surface 8.

Finally, the light L3 traveling from the light source bulb 6 to the transmission part 11 of the lens 9 passes through the opening part 7 of the pillar garnish 3 while spreading vertically and illuminates the ceiling surface 4.

The transmission section 11 of the lens 9 is specially designed.

That is, as shown in FIG. 5 (a), when the lens x is formed in a spherical shape centering on the light emitting portion of the light source bulb, the light L1 reflected by the main reflecting surface 8 is incident on the incident points IP and IP. Both are refracted at the exit point OP,
As a result, there is a problem that the irradiation point on the ceiling surface 4 is shifted.

Therefore, as shown in FIG. 5 (b), the light L1 reflected by the main reflection surface 8 on both the inner surface 11i and the outer surface 11o of the transmitting portion 11 of the lens 9 is 0 (both incident angle and outgoing angle). (Zero). Therefore, the light is not refracted at the entrance point IP and the exit point OP, so that the point for illuminating the ceiling surface 4 does not shift, and illumination as designed can be performed.

In the interior lighting lamp 1 described above, the light L1 reflected by the main reflection surface 8 once crosses vertically at an intersection F near the opening 7 of the pillar garnish 3 and then spreads in the vertical direction. The ceiling surface 4 far from the opening 7
Illumination, and the illumination range can be widened. In addition, since the light L1 reflected by the main reflection surface 8 can be emitted from the opening 7, the size of the main reflection surface 8 (the angle θM when the main reflection surface 8 is viewed from the light emitting portion 6a of the light source bulb 6). ) Is increased, so that more light from the light source bulb 6 can be used. Further, since the light L2 directed to the auxiliary reflection surface 10 can be reflected and emitted by the main reflection surface 8, more light from the light source bulb 6 can be used.

In the above description, it is assumed that the light emitted from the opening 7 of the pillar garnish 3 has a larger spread in the up-down direction, and that the ceiling surface 4 farther from the opening 7 is illuminated. As explained for the purpose,
6 and 7 show modified examples of the body provided with a reflecting surface for making the light emitted from the opening 7 have a larger spread in the horizontal direction.

The body 5A has side reflection surfaces 12l and 12r that are plane-symmetric with each other on the left and right sides of the main reflection surface 8 described above. Most of the light L4a from the light-emitting portion 6a of the light source bulb 6 toward the left side reflection surface 12l is reflected by the side reflection surface 12l, and the light condensing point Fl located immediately in front of the side reflection surface 12l. After being condensed, the light L5a is mainly irradiated rightward while spreading right and left, and most of the light L5a directed toward the right side reflection surface 12r is reflected by the side reflection surface 12r and is immediately in front of the side reflection surface 12r. After being converged on the located converging point Fr, the light is irradiated mainly to the left while expanding right and left. In addition, of the light L4 and L5, each side reflection surface 12
Light L4b, L5b reflected near the opening of l, 12r
Is irradiated to the right or left without intersecting at the focal points Fl and Fr. And these lights L4, L
5 and the light reflected by the main reflection surface 8 and the light L3 directly radiated from the light emitting portion 6a illuminate a wide area of the ceiling surface in the left-right direction.

As described above, by using the body 5A, it is possible to obtain illumination light having a large spread in the left-right direction.

The lights L4 and L5 also intersect in the vertical direction near the opening of the pillar garnish 3, and are radiated while spreading in the vertical direction to illuminate far from the opening 7. is there.

FIGS. 8 and 9 show a second embodiment of the indoor lighting lamp of the present invention.

The interior illumination lamp 1B according to the second embodiment does not have a reflection surface, and can control the light of the light source bulb only by the lens to illuminate the ceiling surface far from the opening of the pillar garnish. It was made possible.

The interior lighting lamp 1B includes a body 14 provided inside the pillar garnish 13, a light source bulb 15 detachably attached to the body 14, and an opening 16 formed in the light source bulb 15 and the pillar garnish 13.
And a lens 17 attached to the body 14 so as to be positioned between the lens 17 and the lens 17.

The lens 17 has five parts 1 from bottom to top.
8a, 18b, 18c, 18d, and 18e. In each of the portions 18a to 18e, the light coming from the light source bulb 15 is converted into a parallel light beam on the inner surface 17i, and is controlled to illuminate a predetermined area of the ceiling surface 4 on the outer surface 17o. The light La transmitted through the portion 18a is reflected at the intersection F
After crossing up and down at a, go up and down to make the ceiling 4A
And light Lb to Le transmitted through the portions 18b to 18e
Is crossed up and down at or near the point Fx and then diffused up and down, Lb is the ceiling surface 4B, Lc is the ceiling surface 4C,
Ld illuminates the ceiling surface 4D, and Le illuminates the ceiling surface 4E. At this time, the light amount in La to Le is
7 to uniformly illuminate the ceiling surfaces 4A to 4E.

In the indoor lighting lamp 1B described above,
Since the light emitted from the light source bulb 15 is once crossed vertically by the lens 17 to illuminate the ceiling surface 4, even if the light source bulb 15 is disposed at a position recessed from the opening 16 of the pillar garnish 13. It is possible to irradiate light having a sufficient spread in the vertical direction while passing through the opening 16 having a narrow vertical width, and to illuminate a portion of the ceiling surface 4 far from the opening 16. Further, the ceiling surface can be uniformly illuminated by uniformly distributing the amount of light and irradiating the ceiling.

FIGS. 10 and 11 show a modification 1C in which the light source of the indoor lighting lamp 1B according to the second embodiment is replaced with a light emitting diode (LED) 19, and the other parts are the same as those of the second embodiment. Since it is the same as the interior lighting lamp 1B according to the second embodiment, the same parts are denoted by the same reference numerals as those of the same parts in the interior lighting lamp 1B, and description thereof will be omitted.

In the interior lighting lamp 1C, since the light source is an LED, the power consumption can be reduced, the heat generation is small, and it is not necessary to take a special heat generation measure.

It should be noted that the shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the specific embodiments to be carried out when carrying out the present invention.
These should not be interpreted as limiting the technical scope of the present invention.

[0038]

As is apparent from the above description, the interior lighting lamp of the present invention is an interior lighting which is disposed near the opening of the decorative member provided on the side of the ceiling so as to be covered with the decorative member. A lamp, comprising: a light source; and optical means for reflecting or refracting light from the light source, wherein light emitted from the optical means is emitted from the opening by vertically intersecting near the opening. It is characterized by illuminating the ceiling surface.

Therefore, in the interior lighting lamp of the present invention, the light from the light source intersects at a position close to the opening, so that the spread angle of the luminous flux in the vertical direction can be increased. It becomes possible to illuminate a position far from the opening in the surface.

According to the second aspect of the present invention, a main reflection surface is formed on the side opposite to the opening with the light source interposed therebetween, and the main reflection surface is formed on the side opposite to the main reflection surface with the light source interposed therebetween. An auxiliary reflection surface is provided at a position where the light reflected by the surface is not blocked with respect to the opening, and light directed directly from the light source to the auxiliary reflection surface is reflected by the auxiliary reflection surface toward the main reflection surface. Therefore, much of the light emitted from the light source can be used for illumination of the ceiling surface, and the ceiling surface can be brightly illuminated over a wide range.

According to the third aspect of the present invention, the light emitted from the optical means is crossed even in the horizontal direction and is emitted from the opening, so that the ceiling surface extends over a wider area. Can be illuminated.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of an indoor lighting lamp of the present invention together with FIG. 2 to FIG. 5, and this figure is a longitudinal sectional view.

FIG. 2 is a schematic view showing a state of being installed in a room.

FIG. 3 is an enlarged sectional view of a main part.

FIG. 4 is an enlarged schematic perspective view showing a main part.

FIG. 5 is a longitudinal sectional view showing the shape of a lens and its operation.

FIG. 6 shows a modification of the body together with FIG. 7,
This figure is a horizontal sectional view.

FIG. 7 is an enlarged perspective view.

8 shows a second embodiment of the indoor lighting lamp of the present invention together with FIG. 9, and this figure is a longitudinal sectional view.

FIG. 9 is an enlarged vertical sectional view showing the operation of the lens.

FIG. 10 shows a light emitting diode (L) as a light source together with FIG.
FIG. 14 shows a modification of the second embodiment using ED), and this figure is a longitudinal sectional view.

FIG. 11 is an enlarged sectional view of a main part.

FIG. 12 is a longitudinal sectional view showing an example of a conventional indoor lighting lamp.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Interior lighting lamp, 3 ... Pillar garnish, 4 ... Ceiling surface, 6 ... Light source bulb (light source), 7 ... Opening, 8 ... Main reflection surface (optical means), 10 ... Auxiliary reflection surface, F ... Intersection (Opening) Part), 12l ... side reflection surface (optical means), 12r ...
Side reflection surface (optical means), 1B ... indoor lighting lamp, 13 ...
Pillar garnish (decorative member), 15 light source bulb (light source), 16 opening, 17 lens (optical means),
Fa: intersection (near the opening), Fx: intersection (near the opening), 1C: indoor lighting lamp, 19: light emitting diode (light source)

Claims (4)

[Claims] 1. An indoor lighting lamp which is disposed near an opening of a decorative member provided on a side of a ceiling so as to be covered with the decorative member, and reflects or refracts a light source and light from the light source. An indoor lighting lamp comprising: an optical unit, wherein the light emitted from the optical unit is vertically intersected near the opening to be emitted from the opening and illuminate a ceiling surface. 2. A main reflection surface is formed on a side opposite to the opening with the light source interposed therebetween, and light reflected on the main reflection surface on a side opposite to the main reflection surface with the light source interposed therebetween is reflected by the opening. 2. The interior lighting according to claim 1, wherein an auxiliary reflection surface is provided at a position where light is not shielded from the light source, and light directed from the light source directly to the auxiliary reflection surface is reflected toward the main reflection surface by the auxiliary reflection surface. lamp. 3. The interior illumination lamp according to claim 1, wherein the light emitted from the optical means crosses even in the horizontal direction and is emitted from the opening. 4. The interior lighting lamp according to claim 1, further comprising a plurality of divided lenses, wherein light passing through the divided portions intersects vertically near the opening. .