Door frame with indirect lighting

Abstract

To irradiate a door surface with indirect light to clearly show a gateway door in, for example, a corridor in which a plurality of gateways is arranged.SOLUTION: The present invention provides a door frame in which a tape-shaped illumination 20 is housed, where a plurality of LED light source chips are arranged in a row in an illumination housing space 15 of a frame body frame 11 of an upper frame 10A formed with the illumination housing space 15 whose inner surfaces serve as reflection surfaces 15a to 15c and lower surface has an irradiation opening 17. A right beam R emitted from the illumination 20 can be reflected on the reflection surfaces 15a to 15c and can be softly illuminated as indirect light from the irradiation opening 17 on an upper half part of a door surface 1a.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an indirectly lit door frame, and more particularly to an indirectly lit door frame that illuminates the door surface with indirect light from LED lighting housed within the door frame. [Background technology]

[0002] Conventionally, lighting designs for corridors and the like in offices, hotels, and apartment buildings have been such that ceiling lights are arranged along the corridor. However, from the viewpoints of energy conservation, consideration for the surrounding environment, and design, there are also design examples in which downlights and the like are arranged at predetermined intervals to provide appropriate shadows rather than uniform lighting from the ceiling. In line with this, door frames have also been proposed that house lighting that illuminates each entrance door and the vicinity of the door in order to clearly indicate the entrance doors of each room (Patent Documents 1 and 2).

[0003] The frame-integrated illuminated door disclosed in Patent Document 1 has a ceiling reflector attached to the top of the lighting fixture housed in the upper door frame, at an angle that reflects the light emitted from the lighting fixture and illuminates the ceiling surface appropriately. Furthermore, a signboard that is visible by transmitting direct light from the lighting fixture is placed in front of the entrance, and louvers are provided on the underside of the upper frame to directly illuminate the door surface from above (see Figure 3). In addition, a ballast, a dimmer, etc. for turning on the lighting fixture are also housed in the upper door frame.

[0004] The door frame with an illumination device disclosed in Patent Document 2 consists of a box containing a light source attached to a part of the side of the door frame member (upper frame), and a louver is provided on the underside of the box to direct light from the light source toward the door. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 63-161287 [Patent Document 2] Japanese Utility Model Application Publication No. 6-16678 Summary of the Invention [Problem to be solved by the invention]

[0006] The frame-integrated illuminated door disclosed in Patent Document 1 is designed to accommodate all lighting fixtures, including the illuminating lamp, ceiling reflector, signboard, etc., within the upper door frame, which requires the upper door frame to be designed to be large, resulting in larger frame components and a larger door opening for attaching the frame.In addition, the signboard is displayed on part of the upper frame and the ceiling reflector that illuminates the ceiling is exposed above it, which results in a lack of unity in the door design.

[0007] The door frame with a protruding illuminator disclosed in Patent Document 2 also requires the work of attaching a box containing the illuminating lamp to a part of the side of the door frame member. Also, since part of the door frame is protruding, it lacks aesthetic appeal as a door design.

[0008] Therefore, the object of the present invention is to provide a door frame with indirect lighting that solves the problems of the conventional technology described above, and that consists of a compact, sturdy frame-shaped door frame body that is easy to manufacture, and that can illuminate the door surface with soft indirect light from LED lighting housed within the door frame body, making it possible to clearly indicate the entrance / exit door. [Means for solving the problem]

[0009] The present invention provides an indirectly lit door frame provided on the upper edge of a door that separates a room from a corridor, the door frame having a light source for indirect lighting that illuminates the door surface of the door facing the corridor, the door frame comprising: an upper door frame portion that is held within a wall above the door and covers the upper surface of the door when the door is closed; an illumination accommodating space portion that is located a predetermined distance forward from the door surface and has a roughly U-shape in side view facing the door surface, the illumination accommodating space portion being surrounded by a bottom plate on which the light source is placed, a front reflector and a top reflector that surround the light source, and a rear reflector that continues from the top reflector downward at an angle of approximately 45° toward the door surface; boardThe lighting accommodating space has an irradiation opening below the rear reflector, and light emitted from the light source is incident on the lighting accommodating space. Form a part The light is reflected successively by the front reflector, the top reflector, and the rear reflector, and is irradiated onto the upper half of the door surface as indirect light from the irradiation opening.

[0012] The light source includes a plurality of LED light source chips. space It is preferable that the light sources are strip-shaped light sources attached in a row along the width direction of the door on the underside of the door.

[0015] It is preferable that a light diffusing means is attached to the illumination opening. [Effects of the Invention]

[0016] According to the present invention, the door surface can be illuminated with soft indirect light from LED lighting housed within a door frame that is easy to manufacture, compact, and durable, making it possible to clearly indicate the entrance door, thereby contributing to improving the spatial design of a hallway or other space with multiple entrances. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1A is a front view showing an example of the fitting of an office door in a door frame of one embodiment of the indirectly illuminated door frame of the present invention; FIG. 1B is a side view showing the vertical frame of the door frame from the left side; FIG. 1C is a plan view showing the upper frame of the door frame from above; and FIG. 1D is a cross-sectional view showing the approximate cross-sectional shapes of the upper frame and vertical frame. [Figure 2] 2 is an enlarged partial cross-sectional view showing the upper frame of the door frame and the peripheral portion of the upper end of the door shown in FIG. 1; [Figure 3] FIG. 2 is a front view showing the office door shown in FIG. 1 with indirect light irradiated onto the door surface. [Figure 4] 10A to 10D are partial cross-sectional views schematically showing how indirect light is irradiated onto a door according to various modified shapes of the door frame of the present invention. [Figure 5]FIG. 10 is a partial cross-sectional view showing an enlarged cross section of a vertical frame and its surrounding area in an embodiment in which indirect lighting is accommodated within the vertical frame of a door frame. [Figure 6] FIG. 6 is a front view showing the state in which indirect light is irradiated onto the door surface of the office door shown in FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the indirectly illuminated door frame of the present invention will be described with reference to the accompanying drawings.

[0019] FIG. 1(a) shows an example of an entrance door for an office work room and conference room, and shows the fit of door 1 into door frame 10 from the hallway side. As shown in FIGS. 1(b) and 1(c), the upper frame 10A and vertical frame 10B of the door frame 10 in this embodiment are made of a compact steel frame 11 bent into a flat cross-sectional shape, which surrounds the door 1 on three sides and supports it via hinges (not shown) so that it can be opened and closed. Door 1 is a well-known steel double door with slit glass 2 fitted into the main door 1A side.

[0020] An LED light 20 serving as a strip-shaped light source is housed within the frame 11 of the upper frame 10A of the door frame 10, spanning almost the entire length of the frame 11 (FIGS. 1(c) and 2). This LED light 20 is a known strip-shaped LED light 20 (hereinafter referred to as the tape light 20) in which multiple LED chips 21 are arranged in a continuous line at predetermined intervals on a narrow, tape-shaped flexible substrate 22, and the entire substrate 22 emits light in a strip-like manner. The LED light 20 can be attached to an object with adhesive tape, or the flexible substrate 22 can be laminated with magnetic tape and magnetically attached to a metal (magnetic) surface of the object. The tape light 20 of this embodiment is fixed and held by magnetic attraction on the bottom plate 13a of the front panel 13 (described below) across almost the entire width of the door (FIGS. 1(a) and 2).

[0021] 2 is a partial cross-sectional view showing the periphery of the joint between upper frame 10A and the upper end of vertical frame 10B. Upper frame 10A is composed of upper frame plate 12 joined to the upper end of vertical frame 10B, which has a predetermined projected width; front panel 13, which is erected on upper frame plate 12 to ensure the predetermined height of upper frame 10A and has a generally U-shaped cross section capable of holding tape lighting 20 on bottom panel 13a; and frame frame 11, which is fabricated by bending steel plate so that lighting accommodation space 15 formed behind front panel 13 (as viewed from the hallway) and door upper frame 16 continuing from the lower end of lighting accommodation space 15 are integrated into the wall. Upper frame 10A is supported within the wall by support structural member 25 (shown in phantom lines) located within the wall above upper frame 10A, with the upper end of door upper frame 16 and the upper end of front panel 13 attached to support structural member 25 via mounting hardware (not shown). 2, the door upper frame portion 16 covers the upper surface of the door 1 (shown in phantom lines in the figure) and holds the lower end of the interior wall decorative panel 26. Note that the front panel 13 may be omitted, and the framework frame 11 may be bent to form a portion corresponding to the front panel 13 (a portion corresponding to the front reflector described below).

[0022] As shown in FIG. 2, the lighting accommodation space 15 comprises a front reflector 15a supported by the front panel 13, a top reflector 15b connected to the upper end of the front reflector 15a, and a rear reflector 15c bent downward from the top reflector 15b at a predetermined angle (e.g., approximately 45° relative to the top reflector) toward the rear. A lower opening 17 is formed on the underside of the lighting accommodation space 15 as an illumination opening for irradiating indirect light toward the door. The rear end of the rear reflector 15c is connected to the door upper frame 16. The surfaces of the reflectors 15a-15c may be polished or roughened, or may be painted in various bright colors. The specifications of the reflective surfaces are preferably determined depending on the type of indirect light desired to illuminate the door surface 1a.

[0023] A circular hole 14 is formed at the upper end of the vertical frame 10B of the lighting accommodation space 15 (FIG. 2). A power cable 23 connected to the end of the strip lighting 20 is led through this circular hole 14 to a power supply (not shown) outside the door frame 10. LED chips 21 emitting various colors can be used as the light source for the strip lighting 20, and the color and brightness of the LED chips 21 can be controlled in various ways using an attached control circuit. For example, the color of the reflector and the emitted color of the LED chips 21 can be appropriately set to effectively illuminate a door surface 1a colored in a predetermined color.

[0024] FIG. 2 shows a schematic diagram of the path of light ray R when the strip lighting 20 is turned on and illuminates the door surface 1a located below the lighting accommodation space 15. FIG. 3 shows the state in which the upper half of the door surface 1a of the office door 1 shown in FIG. 1(a) is illuminated as indirect lighting. The LED chips 21 mounted on the strip lighting 20 emit light with directionality, and as shown in FIG. 2, the light ray R is randomly reflected by the reflectors 15a-15c within the lighting accommodation space 15, passes through the rear reflector 15c, and is irradiated as soft indirect light from the lower opening 17 toward the door surface 1a below. As a result, as shown in FIG. 3, the upper half of the door surface 1a of the office door 1 can be softly illuminated as indirect lighting.

[0025] Each figure in Figure 4 shows various shapes of the frame 11 that forms the lighting accommodation space 15. Figure 4(a) shows an example in which a frame 11 with the same shape as the frame 11 shown in Figure 2 is used, but a strip light 20 is attached to the surface of the front reflector 15a within the lighting accommodation space 15. When the strip light 20 is attached in this position, light rays R from the LED chip 21 are directly directed onto the opposing rear reflector 15c. Because the rear reflector 15c is tilted at approximately 45° from the horizontal, the light rays R reflected by the rear reflector 15c can irradiate a wide area of ​​the door surface 1a with relatively strong indirect light. Figure 4(b) shows an example in which a light diffuser 30 is installed in the lower opening 17 of the lighting accommodation space 15, which has the same shape as Figure 4(a), allowing soft indirect light to illuminate a wider area of ​​the door surface 1a. The light diffuser 25 can be a frosted plate, a simple Fresnel lens, a milky white plate, or any other known translucent plate with light diffusing properties. FIG. 4(c) shows an example in which two reflectors 15c and 15d are positioned at 45° to form a nearly right angle with respect to the tape lighting 20 installed on the bottom plate 13a of the front panel 13, thereby ensuring that indirect light is irradiated downward from the lower opening 17 of the lighting accommodation space 15. In this example, one end of the reflector 15d is free, so that after use, the direction of the reflectors 15c and 15d can be adjusted from the lower opening 17 of the lighting accommodation space 15 to change the irradiation direction of the indirect light (the irradiation range of the door surface 1a). FIG. 4(d) shows that the effect of indirect lighting can be further enhanced by appropriately setting the position of the indirect light source using a reflective curved surface 15e composed of various curved shapes such as a two-dimensional curve (parabola, parabola), thereby controlling the irradiation direction of the reflected light, etc.

[0026] Figures 5 and 6 show another embodiment in which a frame 11 having the same shape as the upper frame 10A shown in Figure 2 is applied to the vertical frame 10B of the door 1. The configuration of each part of the frame 11 is exactly the same as the configuration of the frame 11 of the upper frame 10A in Figure 2, and the door 1 can be opened and closed freely via hinges 3 provided on part of the vertical frame 10B, as shown by the imaginary lines. Figure 6 shows an office door 1 equivalent to Figure 1(a) in which tape lighting 20 housed in the lighting housing space 15 of the frame 11 of the vertical frame 10B illuminates the entire vertical direction of the sides of the main door 1A and sub-door 1B of the office door 1 as indirect lighting.

[0027] In the above explanation, we have described an application example in which indirect lighting is used to softly illuminate a wide area such as the upper half or entire side of the door surface, but if a nameplate plate bearing the room number, office name, etc. is attached to the door surface, it is also possible to illuminate the plate as a spotlight by adjusting the light intensity, direction of the light beam, light emission range, etc. Also, while we have used a strip-shaped LED light as an example of a strip-shaped light source, it goes without saying that various types of lighting in which multiple LED chips are unitized and manufactured into a strip-shaped light source can also be used as appropriate, such as so-called tube lights, in which multiple LED chips are installed in a row inside a transparent tube.

[0028] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. In other words, embodiments obtained by combining technical means modified appropriately within the scope of the claims are also included in the technical scope of the present invention. [Explanation of symbols]

[0029] 1 door 1a Door surface 10 Door Frame 10A upper frame 10B vertical frame 11 Frame 15 Lighting storage space 16 Door upper frame 17 Lower opening (irradiation opening) 20 LED lighting (tape lighting) 21 LED light source chips

Claims

1. The door frame with indirect lighting is provided on the upper side of the door that separates the room from the corridor and is equipped with a light source of indirect lighting that illuminates the door surface of the door facing the corridor, The door frame is held within the wall above the door; a door upper frame portion that covers the upper surface of the door when the door is closed; an illumination accommodating space portion located a predetermined distance forward from the door surface and having a generally U-shape in a side view facing the door surface, the illumination accommodating space portion being surrounded by a bottom plate on which the light source is placed, a front reflector and a top reflector surrounding the light source, and a rear reflector extending downward from the top reflector toward the door surface at an angle of approximately 45°; The upper frame is made of a frame body frame integrally formed by bending a plate material, The illumination receiving space has an illumination opening below the rear reflector, The door frame with indirect lighting is characterized in that the light emitted from the light source is reflected sequentially by the front reflector, top reflector, and rear reflector that form the lighting storage space, and irradiates the upper half of the door surface as indirect light from the irradiation opening.

2. 2. The door frame with indirect lighting according to claim 1, wherein the light source is a strip-shaped light source in which a plurality of LED light source chips are attached in a row along the width direction of the door on the underside of the lighting accommodation space portion.

3. 2. The indirectly illuminated door frame according to claim 1, wherein a light diffusing means is attached to the illumination opening.

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