Lighting device and mobile body

Abstract

To provide a lighting device that can readily fitted to an installation object even when an installation surface of the installation object is not a flat surface.SOLUTION: A lighting device 1 installed to an installation surface of an installation object includes: a light source 20; a light guide bar 10 for guiding light that is emitted from the light source 20; and a holding member 30 for holding the light guide bar 10. The holding member 30 includes: a storage body 31 extending along the light guide bar 10 and covering and storing the light guide bar 10; and a fixing body 32 for fixing the storage body 31 to an installation surface. The light guide bar 10 and the storage body 31 have light transmissivity and flexibility.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a lighting device and a moving object. [Background technology]

[0002] Conventionally, lighting devices using light guides have been known. For example, Patent Document 1 discloses a lighting device using a long light guide rod. In the lighting device disclosed in Patent Document 1, light emitted from a light source is incident on an end face of the light guide rod and the light is emitted from a side peripheral surface of the light guide rod, thereby emitting a linear illumination light. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-13707 Summary of the Invention [Problem to be solved by the invention]

[0004] A lighting device having a light guide rod is installed by attaching the light guide rod to an object to be installed. In this case, if the installation surface of the object is not flat, it is difficult to attach the light guide rod to the object. For example, if the installation surface of the object is curved, the light guide rod must be bent before being attached to the object, but it is difficult to attach the bent light guide rod to the object. Furthermore, when using a lighting device having a light guide rod for indirect lighting, it is necessary to remove the front panel of the object on which the lighting device is installed, which is time-consuming. Specifically, the front panel must be removed when replacing the light guide rod.

[0005] The present invention has been made to solve such problems, and aims to provide a lighting device that can be easily attached to an object to be installed, even if the installation surface of the object to be installed is not flat. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, one aspect of the lighting device according to the present invention is a lighting device that is installed on an installation surface of an object to be installed, and includes a light source, a light guide rod that guides light emitted from the light source, and a holding member that holds the light guide rod, wherein the holding member has a storage body that extends along the light guide rod and covers and stores the light guide rod, and a fixing body that fixes the storage body to the installation surface, and both the light guide rod and the storage body are translucent and flexible.

[0007] Furthermore, one aspect of the moving body according to the present invention comprises the above-mentioned lighting device and an installation object on which the lighting device is installed, and the light guide rod and the storage body are bent to follow the shape of the installation surface of the installation object. [Effects of the Invention]

[0008] According to the present invention, even if the installation surface of the installation object is not flat, the light guide rod can be easily attached to the installation object, and the light guide rod can be easily replaced by simply sliding it. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is an external view of the lighting device according to the first embodiment. [Figure 2] FIG. 2 is a diagram showing a state in which the light guiding rod and the holding member of the lighting device according to the first embodiment are bent. [Figure 3] FIG. 3 is a cross-sectional view of the lighting device according to the first embodiment. [Figure 4] 4 is a cross-sectional view of the lighting device according to the first embodiment taken along line IV-IV in FIG. [Figure 5] FIG. 5 is a diagram illustrating an example of a method for producing a holding member in the lighting device according to the first embodiment. [Figure 6] FIG. 6 is a diagram for explaining an example of use of the lighting device according to the first embodiment. [Figure 7]FIG. 7 is a diagram showing a light guiding rod and a holding member in an illumination device according to a first modification of the first embodiment. [Figure 8] FIG. 8 is a perspective view of a light guiding rod and a holding member in an illumination device according to Modification 2 of Embodiment 1. FIG. [Figure 9] FIG. 9 is a diagram illustrating a configuration of a light guiding rod and a holding member in an illumination device according to Modification 2 of Embodiment 1. In FIG. [Figure 10] FIG. 10 is a diagram illustrating a configuration of a light guiding rod and a holding member in an illumination device according to a third modification of the first embodiment. [Figure 11] FIG. 11 is a diagram showing a state in which the light guiding rod and the holding member in the lighting device according to the second embodiment are bent. [Figure 12] FIG. 12 is a cross-sectional view of the lighting device according to the second embodiment. [Figure 13] FIG. 13 is a diagram illustrating a configuration of a fixing body of a holding member in an illumination device according to the second embodiment. [Figure 14] FIG. 14 is a diagram showing the configuration of a lighting device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below represents a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions and connection forms of the components, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, components that are not described in the independent claims that represent the highest concept of the present invention will be described as optional components.

[0011] The drawings are schematic diagrams and are not necessarily drawn to scale. Therefore, the scales of the drawings are not necessarily the same. In the drawings, the same reference numerals are used to denote substantially the same components, and redundant explanations will be omitted or simplified.

[0012] Furthermore, in this specification, the terms "above," "upper," "below," and "lower" do not refer to the upward direction (vertically upward) and downward direction (vertically downward) in absolute spatial recognition, but are used as terms defined by relative positional relationships.

[0013] (Embodiment 1) The configuration of the lighting device 1 according to the first embodiment will be described with reference to Figs. 1 to 4. Fig. 1 is an external view of the lighting device 1 according to the first embodiment. Fig. 2 is a view showing a state in which the light guiding rod 10 and the holding member 30 are bent in the lighting device 1 according to the first embodiment. Figs. 3 and 4 are cross-sectional views of the lighting device 1 according to the first embodiment. Fig. 3 shows a cross section in the longitudinal direction of the light guiding rod 10, and Fig. 4 shows a cross section along the line IV-IV in Fig. 3.

[0014] As shown in FIGS. 1 to 3, the lighting device 1 includes a light guiding rod 10, a light source 20, a holding member 30, and a reflecting member 40.

[0015] The light guide rod 10 is a long light guide. The length of the light guide rod 10 is, for example, 200 mm or more. In this embodiment, the length of the light guide rod 10 is 1000 mm. The length of the light guide rod 10 may be less than 200 mm. There is no particular upper limit to the length of the light guide rod 10, but, for example, the length of the light guide rod 10 is 3000 mm or less.

[0016] The cross-sectional shape of the light guiding rod 10 is an extruded shape. In other words, any cross-sectional shape of the light guiding rod 10 is approximately the same along the longitudinal direction. In this embodiment, the cross-sectional shape of the light guiding rod 10 is circular. Specifically, the light guiding rod 10 is a thin, cylindrical light guide body with a constant diameter. The diameter of the light guiding rod 10 with a circular cross section is, for example, 1 mm to 20 mm. In this embodiment, the diameter of the light guiding rod 10 is 6 mm. Note that the cross-sectional shape of the light guiding rod 10 is not limited to a circle, and may be an ellipse or a polygon such as a rectangle.

[0017] The light guide rod 10 is translucent. Therefore, the light guide rod 10 is made of a translucent material. In this embodiment, the light guide rod 10 is made of a translucent resin material. Specifically, the light guide rod 10 is made of a transparent resin material. Furthermore, the light guide rod 10 is flexible. Therefore, the light guide rod 10 is made of a translucent resin material that provides flexibility. The light guide rod 10, which is translucent and flexible, can be made of, for example, an acrylic resin (e.g., a soft acrylic resin) or a silicone resin. Furthermore, when the lighting device 1 is used in a moving object such as an aircraft, the light guide rod 10 should preferably be flame-retardant. In this case, silicone resin is preferably used as the flame-retardant resin material that constitutes the light guide rod 10. This allows for a light guide rod 10 that is translucent, flexible, and flame-retardant. In this way, the flexible light guide rod 10 can be bent as shown in FIG. 2. For example, the light guide rod 10 can be bent to curve.

[0018] The flexible and transparent light guide rod 10 may be made of multiple resin materials instead of one resin material. For example, the light guide rod 10 may be made of a core (core material) and a clad covering the core. In this case, the clad is made of a resin material with a lower refractive index than the core. As an example, the core may be made of acrylic resin or silicone resin, and the clad may be made of fluororesin.

[0019] The light guiding rod 10 has a first end 11 which is one end in the longitudinal direction of the light guiding rod 10, and a second end 12 which is the other end in the longitudinal direction of the light guiding rod 10. The first end 11 is a light entrance portion where light enters. An end face 11a (first end face) of the first end 11 is an entrance surface where light enters. The second end 12 is the end opposite to the first end 11. The second end 12 has an end face 12a (second end face).

[0020] Light that enters the light guiding rod 10 is extracted from the side surface (circumferential side surface) of the light guiding rod 10. The side surface of the light guiding rod 10 is the outer surface of the light guiding rod 10 and is the exposed surface that is exposed to the outside. Light from the light source 20 enters the light guiding rod 10, is guided through the light guiding rod 10, and is emitted to the outside from the side surface of the light guiding rod 10. As a result, linear light is emitted from the light guiding rod 10.

[0021] In this way, the side surface of the light guiding rod 10 is a light exit surface through which light guided within the light guiding rod 10 is exited to the outside of the light guiding rod 10. In this case, the entire circumferential surface of the side surface of the light guiding rod 10 may be a light exit surface, or only a portion of the circumferential surface of the side surface of the light guiding rod 10 may be a light exit surface.

[0022] A light extraction structure may be provided on the side surface of the light guiding rod 10. By providing the light extraction structure on the light guiding rod 10, the light guided within the light guiding rod 10 can be efficiently extracted from the light guiding rod 10. The light extraction structure is, for example, a prism group made up of multiple dot-shaped prisms. The shape of each prism is, for example, a cone, pyramid, or a concave shape such as a V-groove.

[0023] Light emitted by the light source 20 is incident on the light guiding bar 10. In other words, the light source 20 is a light-emitting unit that emits light to be incident on the light guiding bar 10. As shown in FIG. 3, the light source 20 emits light to be incident on the end surface 11a of the first end 11 of the light guiding bar 10. In this embodiment, the light source 20 is an LED light source configured by an LED (Light Emitting Diode), and emits, for example, white light.

[0024] As shown in FIG. 3, the light source 20 includes a substrate 21 and an LED element 22 disposed on the substrate 21.

[0025] The substrate 21 is a mounting substrate for mounting the LED elements 22. The substrate 21 is, for example, a wiring board (PCB board) on which metal wiring is formed in a predetermined pattern. The base substrate of the substrate 21 can be, for example, a resin substrate, a ceramic substrate, or an insulating coated metal substrate.

[0026] The LED element 22 is an example of a light-emitting element. The LED element 22 is a white LED light source that emits white light. The white light emitted by the LED element 22 contains blue light (a blue component). The LED element 22 is, for example, an individually packaged surface-mounted (SMD: Surface Mount Device) type LED light source. Therefore, the light source 20 is an SMD type LED module. In this case, the LED element 22 includes a white resin or ceramic container (package) with a recess, one or more LED chips primarily mounted on the bottom of the recess, and a sealing member filled in the recess of the container and sealing the LED chips. The sealing member is made of a translucent resin material such as silicone resin. A phosphor-containing resin containing a wavelength conversion material such as a phosphor can be used as the sealing member.

[0027] An LED chip is an example of a semiconductor light-emitting device that emits light using a specified DC power, and is a bare chip that emits monochromatic visible light. The LED chip is, for example, a blue LED chip that emits blue light when powered. In this case, to obtain white light, the sealing material contains a yellow phosphor such as YAG (yttrium aluminum garnet), which fluoresces using the blue light from the blue LED chip as excitation light.

[0028] The LED element 22 configured in this manner is a white LED element composed of a blue LED chip and a yellow phosphor. In this case, the yellow phosphor absorbs part of the blue light emitted by the blue LED chip, becomes excited, and emits yellow light. This yellow light mixes with the blue light not absorbed by the yellow phosphor to produce white light. Note that the sealing member is not limited to the yellow phosphor, and may also contain red and green phosphors.

[0029] The light source 20 is disposed opposite the end face 11a of the first end 11 of the light guiding rod 10. The light emitting surface of the light source 20 faces the end face 11a of the first end 11 of the light guiding rod 10. Specifically, the light source 20 is disposed so that the light emitting surface of the LED element 22 faces the end face 11a of the first end 11. Light emitted from the light source 20 enters the light guiding rod 10 from the end face 11a of the first end 11 of the light guiding rod 10.

[0030] The light source 20 emits light using power supplied from a power supply circuit. Specifically, DC power is supplied from the power supply circuit to the LED element 22 of the light source 20, causing the LED element 22 to emit light. Light emitted from the LED element 22 becomes the emitted light of the light source 20. The light emitted from the light source 20 enters the light guiding rod 10 from the end face (light incident surface) of the first end 11 of the light guiding rod 10. The power supply circuit converts AC power from an external power source such as a commercial power source into DC power of a predetermined level by rectifying, smoothing, stepping down, etc., and supplies the DC power to the light source 20. The power supply circuit may be built into the lighting device 1 or may be provided separately from the lighting device 1.

[0031] In addition, separate from the light source 20 or as part of the light source 20, if necessary, an optical component such as a variable light distribution component such as a lens that changes the distribution of light emitted from the LED element 22, a filter that controls the wavelength of light emitted from the LED element 22, or a diffusion plate that scatters and transmits the light emitted from the LED element 22 may be provided.

[0032] The light source 20 is held at the first end 11 of the light guiding rod 10 by a first holder 51. The first holder 51 is a cylindrical cap member with a bottom, and the light source 20 is housed in the first holder 51. Specifically, the light source 20 is disposed on the bottom surface of the first holder 51. The first holder 51 is fitted into the first end 11 of the light guiding rod 10. The first holder 51 may be made of resin or metal.

[0033] Although not shown, the first holder 51 that houses the light source 20 may be disposed on a base. The base is preferably a heat sink that dissipates heat generated by the light source 20. Therefore, the base is preferably made of a metal material such as aluminum or a material with high thermal conductivity such as a highly thermally conductive resin.

[0034] The holding member 30 is a member that holds the light guiding rod 10. The holding member 30 also serves as a member that fixes the held light guiding rod 10 to an installation object on which the lighting device 1 is to be installed.

[0035] As shown in Figures 3 and 4, the holding member 30 has a storage body 31 that extends along the light guide rod 10 and covers and stores the light guide rod 10, and a fixing body 32 for fixing the storage body 31 to the installation surface of the installation object on which the lighting device 1 is installed.

[0036] As shown in FIGS. 2 to 4, the housing 31 is a cylindrical body. The cross-sectional shape of the housing 31 is the same as that of the light guiding rod 10. In this embodiment, the light guiding rod 10 is an elongated cylindrical body with a circular cross-sectional shape, so the housing 31 is an elongated cylindrical tube with a circular cross-sectional shape. The housing 31 entirely covers the light guiding rod 10. As shown in FIGS. 2 and 3, in this embodiment, both ends of the light guiding rod 10 housed in the housing 31 are exposed from the housing 31. As shown in FIG. 4, it is preferable that there be a small gap between the outer surface of the light guiding rod 10 housed in the housing 31 and the inner surface of the housing 31. This allows the light guiding rod 10 to be easily inserted into the housing 31. As an example, if the diameter of the light guiding rod 10 is 6 mm, the inner diameter of the housing 31 is 7 mm.

[0037] As shown in FIGS. 2 to 4, the fixing body 32 is a flat, planar plate. The fixing body 32 is a thin, sheet-like member. The fixing body 32 extends along the longitudinal direction of the housing body 31. In this embodiment, the fixing body 32 is an elongated, rectangular plate. As an example, the longitudinal length of the fixing body 32 is approximately the same as the length of the housing body 31, but is not limited to this. The fixing body 32 is in surface contact with the installation surface of the installation object on which the lighting device 1 is to be installed. The fixing body 32 is fixed to the installation surface of the installation object by, for example, fastening members such as screws or a bonding agent such as an adhesive.

[0038] As shown in Fig. 4, the housing body 31 is connected to the fixed body 32. In this embodiment, the outer surface of the cylindrical housing body 31 is joined to the main surface of the flat plate-like fixed body 32. Specifically, the housing body 31 and the fixed body 32 are joined so that their longitudinal directions coincide. Therefore, the connection portion between the housing body 31 and the fixed body 32 is linear.

[0039] The housing 31 is translucent. Therefore, the housing 31 is made of a translucent material. In this embodiment, the housing 31 is made of a translucent resin material. Specifically, the housing 31 is made of a transparent resin material. Furthermore, the housing 31 is flexible. Therefore, the housing 31 is made of a translucent resin material that provides flexibility. The housing 31 that is translucent and flexible can be made of a soft resin such as soft acrylic resin, soft vinyl chloride, fluororesin, polycarbonate resin, or silicone resin. Furthermore, when the lighting device 1 is used in a moving object such as an aircraft, the housing 31 should preferably be flame-retardant. In this case, the flame-retardant resin material that constitutes the housing 31 should preferably be fluororesin, polycarbonate resin, or silicone resin. This makes it possible to obtain a housing 31 that is translucent, flexible, and flame-retardant.

[0040] The fixed body 32 also has translucency and flexibility. Therefore, like the housing body 31, the fixed body 32 can be made of acrylic resin, fluororesin, polycarbonate resin, silicone resin, or the like. In this embodiment, the housing body 31 and the fixed body 32 are made of the same resin material. Specifically, like the housing body 31, the fixed body 32 is made of fluororesin. This allows the fixed body 32 to have translucency, as well as excellent flexibility and flame retardancy, like the housing body 31. Examples of fluororesins having excellent flexibility and flame retardancy include, but are not limited to, PTFE, PFA, FEP, ETFE, and PVF. Note that resin materials that can provide the housing body 31 and the fixed body 32 with translucency, flexibility, and flame retardancy are not limited to fluororesins.

[0041] The holding member 30, which is configured with the housing body 31 and the fixing body 32, is flexible, flame-retardant, and translucent as a whole. As shown in FIG. 2, the holding member 30, which is flexible as a whole, can be bent together with the light guide rod 10 held by the holding member 30. For example, the holding member 30 can be bent so as to curve together with the light guide rod 10. In this case, the number of times the holding member 30 is bent is not limited to one, but may be multiple times. The holding member 30 can also be twisted and bent together with the light guide rod 10.

[0042] The thickness of the housing body 31 and the fixed body 32 is preferably 1 mm or less. This allows for a flexible holding member 30 with a high degree of bending freedom. In this embodiment, the thickness of the housing body 31 and the fixed body 32 is 0.5 mm.

[0043] The housing 31 and the fixed body 32, both made of a resin material, can be connected by fusion. For example, the holding member 30 can be produced as shown in FIG. 5. Specifically, as shown in FIG. 5(a), two identical cylindrical resin tubes 100 are joined by heat fusion. As shown in FIG. 5(b), one of the two resin tubes 100 is cut along the longitudinal direction. As shown in FIG. 5(c), the cut resin tube 100 is opened into a flat plate shape. This produces the holding member 30. That is, the uncut resin tube 100 becomes the housing 31, and the cut resin tube 100 becomes the fixed body 32. If the cut resin tube 100 has a rolled shape, it may be heat-processed to make the cut resin tube 100 into a flat plate shape. However, the method for producing the holding member 30 is not limited to this. For example, the holding member 30 may be produced by thermally fusing a cylindrical resin tube that will become the housing 31 and a flat resin sheet that will become the fixed body 32 to connect them. The method of connecting the housing 31 and the fixed body 32 is not limited to fusing, and the housing 31 and the fixed body 32 may be connected by a method other than fusing. Instead of connecting the housing 31 and the fixed body 32, a resin molded product in which the housing 31 and the fixed body 32 are integrated may be produced by extrusion molding.

[0044] The reflecting member 40 is disposed opposite the end face 12a of the second end 12, which is the other longitudinal end of the light guiding rod 10. Specifically, the reflecting member 40 faces the end face 12a of the second end 12 of the light guiding rod 10. In this embodiment, the reflecting member 40 is in contact with the end face 12a of the second end 12 of the light guiding rod 10, but this is not limiting.

[0045] The reflecting member 40 reflects the light guided through the light guiding bar 10. Specifically, the reflecting member 40 reflects the light from the light source 20 that guides the light through the light guiding bar 10. The reflecting member 40 may specularly reflect (mirror-reflect) or diffusely reflect the incident light. The reflecting member 40 may be a resin sheet made of resin, or a metal sheet or film made of metal.

[0046] In this way, by providing a reflecting member 40 at the second end 12 of the light guiding rod 10, the light guided to the second end 12 of the light guiding rod 10 can be reflected by the reflecting member 40. This makes it possible to prevent a decrease in the amount of illumination light at the second end 12 of the light guiding rod 10. In other words, it is possible to improve the uniformity of the amount of illumination light at the second end 12 of the light guiding rod 10.

[0047] The reflecting member 40 is held at the second end 12 of the light guiding rod 10 by a second holder 52. The second holder 52 is a cylindrical cap member with a bottom, and the reflecting member 40 is housed in the second holder 52. Specifically, the reflecting member 40 is disposed on the bottom surface of the second holder 52. The second holder 52 is an end cap fitted into the second end 12 of the light guiding rod 10. The second holder 52 may be made of resin or metal.

[0048] As an example, the lighting device 1 configured as above is mounted on a partition 2 used as part of a seat unit of an aircraft, as shown in FIG. 6. In this case, the object on which the lighting device 1 is installed is the partition 2. The partition 2 is used, for example, in a seat unit provided in a premium class (e.g., business class or first class) cabin of an aircraft. The partition 2 is configured to surround the sides and rear of a seat (not shown) in which a user boarding the aircraft sits. The partition 2 is a partition panel that separates adjacent users.

[0049] As shown in FIG. 6 , the lighting device 1 is provided, for example, along the upper edge of a partition 2. Specifically, the light guide rod 10 and the holding member 30 of the lighting device 1 are arranged along the upper edge of the partition 2. The lighting device is installed on the partition 2 so that a portion of the holding member 30 housing the light guide rod 10 is exposed. In this case, the holding member 30 of the lighting device 1 is fixed to a predetermined installation surface of an internal member provided inside the front panel of the partition 2. In other words, the lighting device 1 is installed after removing the front panel of the partition 2. In this case, since the upper edge of the partition 2 is curved, the predetermined installation surface of the internal member provided inside the front panel is also curved. Therefore, the housing 31 of the light guide rod 10 and the holding member 30 in the lighting device 1 is bent to follow the shape of the installation surface. In addition, the fixing member 32 of the holding member 30 is fixed to the installation surface in surface contact with the installation surface. The first holder 51 housing the light source 20 and the second holder 52 housing the reflective member 40 are housed in the lower panel.

[0050] As described above, the lighting device 1 according to this embodiment includes a light source 20, a light guiding rod 10 that guides light emitted from the light source 20, and a holding member 30 that holds the light guiding rod 10. The holding member 30 includes a housing 31 that extends along the light guiding rod 10 and covers and houses the light guiding rod 10, and a fixing member 32 that fixes the housing 31 to the installation surface of the installation object on which the lighting device 1 is installed. Both the light guiding rod 10 and the housing 31 are translucent and flexible.

[0051] With this configuration, the light guide rod 10 can be attached to the installation surface by fixing the holding member 30 holding the light guide rod 10 to the installation surface of the installation object. Specifically, the light guide rod 10 can be attached to the installation surface by fixing the fixing member 32 of the holding member 30 to the installation surface of the installation object while the light guide rod 10 is stored in the storage body 31. In this case, if the installation surface of the installation object is not flat, the flexible light guide rod 10 will be bent to conform to the shape of the installation surface. However, since the storage body 31 storing the light guide rod 10 is also flexible, the storage body 31 can be bent to conform to the shape of the installation surface along with the light guide rod 10. For example, if the installation surface of the installation object is curved, the light guide rod 10 and the storage body 31 can be bent and curved along the curved surface. As such, the lighting device 1 according to this embodiment can be easily attached to the installation object even if the installation surface of the installation object on which the lighting device 1 is installed is not flat.

[0052] Moreover, with the lighting device 1 according to this embodiment, after the holding member 30 that holds the light guiding rod 10 is fixed to the installation object, the light guiding rod 10 can be removed by holding the end of the light guiding rod 10 and sliding it out of the housing body 31. Thereafter, the light guiding rod 10 can be stored in the housing body 31 by sliding it back into the housing body 31. In other words, the light guiding rod 10 can be easily inserted and removed from the housing body 31. This allows the light guiding rod 10 to be easily replaced when performing maintenance, etc. For example, if the lighting device 1 is installed in the partition 2 shown in FIG. 6 , the light guiding rod 10 can be easily replaced by simply sliding the light guiding rod 10 without removing the front panel.

[0053] In the lighting device 1 according to the present embodiment, the housing body 31 and the fixing body 32 of the holding member 30 are made of a resin material.

[0054] This allows the housing body 31 and the fixed body 32 to be easily connected by fusing them together.

[0055] Furthermore, in the lighting device 1 according to the present embodiment, the fixing body 32 of the holding member 30 is flexible. That is, not only is the housing body 31 flexible, but the fixing body 32 connected to the housing body 31 is also flexible.

[0056] With this configuration, when the installation surface of the installation object is not flat, not only can the light guide rod 10 and the housing 31 be bent to conform to the shape of the installation surface, but the fixed body 32 fixed to the installation surface can also be bent to conform to the shape of the installation surface. For example, when the installation surface of the installation object is curved, the fixed body 32, along with the light guide rod 10 and housing 31, can be curved and bent along the curved surface. This makes it easy to fix the fixed body 32 to the installation surface, and makes it easier to ensure a contact area between the fixed body 32 and the installation surface, so the fixed body 32 can be stably fixed to the installation surface. As a result, the holding member 30 that holds the light guide rod 10 can be stably fixed to the installation surface.

[0057] In particular, in the lighting device 1 according to this embodiment, the fixed body 32 is planar, and when the fixed body 32 is fixed to the installation surface of the installation object, the fixed body 32 comes into surface contact with the installation surface.

[0058] This configuration ensures a large contact area between the fixed body 32 and the installation surface, allowing the fixed body 32 to be stably fixed to the installation surface, thereby enabling the holding member 30 that holds the light guiding rod 10 to be fixed to the installation surface in an even more stable state.

[0059] In the lighting device 1 according to the present embodiment, the housing body 31 and the fixing body 32 are made of fluororesin.

[0060] This configuration makes it possible to easily obtain the housing body 31 and the fixed body 32 that have excellent flexibility, flame retardancy, and translucency. As a result, the housing body 31 and the fixed body 32 can be easily bent, and therefore the housing body 31 and the fixed body 32 can easily conform to the shape of the installation surface. Furthermore, since the housing body 31 and the fixed body 32 have flame retardancy, it is possible to realize a holding member 30 that is suitable for mobile bodies such as aircraft.

[0061] In addition, when the light guide rod 10 is composed of a core and a cladding covering the core, the housing 31 that houses the light guide rod 10 should be made of the same resin material as the cladding of the light guide rod 10. This allows the cladding of the light guide rod 10 and the housing 31 to have the same refractive index, so even if the light guide rod 10 is covered with the housing 31, light emitted from the side surface of the light guide rod 10 is more likely to enter the housing 31 without being reflected by the inner surface of the housing 31. Therefore, light emitted from the side surface of the light guide rod 10 can pass through the housing 31 and be efficiently extracted from the outside of the housing 31. For example, the core of the light guide rod 10 and the housing 31 should be made of a fluororesin.

[0062] Furthermore, in the lighting device 1 according to this embodiment, the storage body 31 of the holding member 30 is cylindrical, the fixing body 32 of the holding member 30 extends along the longitudinal direction of the storage body 31, and the connecting portion between the storage body 31 and the fixing body 32 is linear.

[0063] With this configuration, the light guide rod 10 is stored in the cylindrical storage body 31, so that the light guide rod 10 can be securely held by the holding member 30, and since the fixing body 32 extends along the longitudinal direction of the storage body 31, the holding member 30 can be fixed to the installation surface in a stable state.

[0064] In the lighting device 1 according to the present embodiment, the fixed body 32 is an elongated member extending along the longitudinal direction of the housing body 31, but the present invention is not limited to this.

[0065] Specifically, as in the lighting device 1A shown in FIG. 7, a plurality of fixing bodies 32A of a holding member 30A may be arranged spaced apart from one another along the longitudinal direction of a cylindrical housing 31. In FIG. 7, (a) is a top view of the lighting device 1A, and (b) is a cross-sectional view of the lighting device 1A taken along line bb in (a). Each of the fixing bodies 32A is flat. The fixing bodies 32A are connected to the housing 31 at equal intervals. The fixing bodies 32A of the holding member 30A in this modification have a shape obtained by intermittently cutting the fixing bodies 32 of the holding member 30 in the above embodiment along the longitudinal direction of the housing 31. As an example, in this modification, each of the fixing bodies 32A has a rectangular shape in a plan view, and each fixing body 32A is connected to the housing 31 so that its longitudinal direction is perpendicular to the longitudinal direction of the housing 31. 7, only the light guiding bar 10 and the holding member 30A of the lighting device 1A are shown, and the light source 20 and the like are omitted.

[0066] 7, by arranging a plurality of retainers 32A spaced apart from one another along the longitudinal direction of housing 31, holding member 30A can be easily bent in a direction parallel to the main surface of planar retainer 32A. That is, with respect to holding member 30 shown in FIGS. 2 to 4, holding member 30 is easy to bend in a direction not parallel to the main surface of planar retainer 32 (e.g., a direction perpendicular to the main surface), but because planar retainer 32 extends along the longitudinal direction of housing 31, holding member 30 is difficult to bend in a direction parallel to the main surface of retainer 32. In contrast, with holding member 30A shaped as shown in FIG. 7, retainer 32A is separated into a plurality of pieces along the longitudinal direction of housing 31, so holding member 30A is easy to bend not only in a direction not parallel to the main surface of planar retainer 32A but also in a direction parallel to the main surface of retainer 32A. 7 has a structure that allows the holding member 30A to be easily bent in all directions (all directions), including up, down, left, and right. As a result, even if the installation surface of the installation object is a complex surface with three-dimensional undulations, the holding member 30A together with the light guiding rod 10 can be easily bent to follow the shape of the installation surface.

[0067] In the above embodiment, the housing 31 of the holding member 30 is cylindrical, but the present invention is not limited to this.

[0068] Specifically, as in the lighting device 1B shown in FIGS. 8 and 9, the housing 31B of the holding member 30B may be semi-cylindrical. FIG. 8 is a perspective view of the lighting device 1B. In FIG. 9, (a) is a top view of the lighting device 1B, and (b) is a cross-sectional view of the lighting device 1B taken along line bb in (a). The semi-cylindrical housing 31B has an opening. In this case, the housing 31B may be open on the side facing the installation object. As an example, the housing 31B is semi-cylindrical. In this modification, the fixing bodies 32B of the holding member 30B are provided in a flange-like shape on both ends of the opening of the housing 31B. In other words, the fixing bodies 32B are connected to the housing 31B so as to protrude from both ends of the opening of the housing 31B. Each of the pair of fixing bodies 32B has a rectangular shape in a plan view and extends over the entire longitudinal direction of the housing 31B. 8 and 9, only the light guiding bar 10 and the holding member 30B of the lighting device 1B are shown, and the light source 20 and the like are omitted.

[0069] 8 and 9, the housing body 31B and the fixing body 32B are flexible, so that even if the installation surface of the object on which the lighting device 1B is to be installed is not flat, the housing body 31B and the fixing body 32B can be bent to follow the shape of the installation surface together with the light guiding rod 10. This allows the lighting device 1B to be easily attached to the installation surface.

[0070] Furthermore, when a semi-cylindrical housing 31B is used, multiple fixing bodies 32C of the holding member 30C may be arranged at a distance from each other along the longitudinal direction of the housing 31B, as in the lighting device 1C shown in FIG. 10. In FIG. 10, (a) is a top view of the lighting device 1C, and (b) is a cross-sectional view of the lighting device 1C taken along line bb in (a). By separating the fixing bodies 32C into multiple parts, the holding member 30C can be easily bent in all directions (up, down, left, right, and all directions). This allows the holding member 30C, together with the light guiding rod 10, to be easily bent to conform to the shape of the installation surface, even if the installation surface of the object has a complex surface. Note that FIG. 10 illustrates only the light guiding rod 10 and the holding member 30C of the lighting device 1C, and the light source 20 and other components are omitted.

[0071] (Embodiment 2) Next, an illumination device 1D according to embodiment 2 will be described with reference to Figs. 11 to 13. Fig. 11 is a diagram showing a state in which the light guiding bar 10 and the holding member 30D in the illumination device 1D according to embodiment 2 are bent. Fig. 12 is a cross-sectional view of the illumination device 1D according to embodiment 2. Fig. 13 is a diagram showing the configuration of a fixing body 32D of the holding member 30D in the illumination device 1D according to embodiment 2. Note that Fig. 11 shows only the light guiding bar 10 and the holding member 30D in the illumination device 1D, and omits the light source 20 and the like.

[0072] The lighting device 1D according to this embodiment includes a light guiding bar 10, a light source 20, a holding member 30D, and a reflecting member 40, similar to the lighting device 1 according to the first embodiment.

[0073] 11 to 13, an illumination device 1D according to the present embodiment differs from the illumination device 1 according to the above-described embodiment 1 in the configuration of a holding member 30D. Specifically, the holding member 30D according to the present embodiment includes a connecting body 33 in addition to a housing body 31 and a fixing body 32D.

[0074] As shown in FIGS. 11 and 12 , the connector 33 is fixed to the housing 31. In this embodiment, the connector 33 is a cylinder extending along the housing 31. Specifically, the connector 33 is a cylindrical resin tube, similar to the housing 31. The housing 31 and the connector 33 may be made of the same resin material. For example, the housing 31 and the connector 33 may both be made of a fluororesin. This allows the housing 31 and the connector 33 to have excellent flexibility, flame retardancy, and translucency. The diameter of the connector 33 is smaller than the diameter of the housing 31, but this is not limited to this. The length of the connector 33 is the same as the length of the housing 31, but this is not limited to this.

[0075] The fixed body 32D is connected to the housing body 31 by clamping the connecting body 33 fixed to the housing body 31. In other words, the fixed body 32D is indirectly connected to the housing body 31 via the connecting body 33. Specifically, the connecting body 33 is fitted into the fixed body 32D and thereby held by the fixed body 32D. The fixed body 32D is a fixing bracket for fixing the housing body 31 to an installation object. In this embodiment, the connecting body 33 is held by multiple fixed bodies 32D. For example, the connecting body 33 is held by two fixed bodies 32D. In this case, the fixed body 32D holds one end and the other end of the connecting body 33 in the longitudinal direction. The fixed body 32D is a rigid body that does not have flexibility. The fixed body 32D may be made of resin or metal.

[0076] When attaching the holding member 30D configured in this manner to the installation surface of the installation target, first, the multiple fixed bodies 32D are fixed to the installation surface of the installation target. The multiple fixed bodies 32D are fixed to the installation surface of the installation target with screws 34, for example, as shown in FIGS. 12 and 13 . Specifically, the screws 34 are inserted into the insertion holes 32Da of the fixed bodies 32D and screwed into the screw holes in the installation surface of the installation target, thereby fixing each of the multiple fixed bodies 32D to the installation surface. Next, the connectors 33 of the holding member 30D that hold the light guiding rod 10 are fitted into the multiple fixed bodies 32D. This allows the holding member 30D holding the light guiding rod 10 to be attached to the installation target.

[0077] Like the lighting device 1 according to Embodiment 1, the lighting device 1D according to the present embodiment configured as described above includes a light source 20, a light guiding rod 10 that guides light emitted from the light source 20, and a holding member 30D that holds the light guiding rod 10. The holding member 30D includes a housing 31 that extends along the light guiding rod 10 and covers and houses the light guiding rod 10, and a fixing member 32D that fixes the housing 31 to the installation surface of the installation object on which the lighting device 1D is to be installed. Both the light guiding rod 10 and the housing 31 are translucent and flexible.

[0078] With this configuration, similar to the first embodiment, the light guiding rod 10 can be attached to the installation surface by fixing the holding member 30D holding the light guiding rod 10 to the installation surface of the installation object. Specifically, the light guiding rod 10 can be attached to the installation surface by fixing the fixing member 32D of the holding member 30D to the installation surface of the installation object while the light guiding rod 10 is housed in the housing 31. In this case, even in this embodiment, the light guiding rod 10 and the housing 31 are flexible, so the housing 31 can be bent together with the light guiding rod 10 to conform to the shape of the installation surface. This allows the lighting device 1D to be easily attached to the installation object even if the installation surface of the installation object is not flat. Furthermore, even in this embodiment, the light guiding rod 10 can be easily inserted into and removed from the housing 31 after the holding member 30D is fixed to the installation object.

[0079] In addition, in the lighting device 1D according to the present embodiment, the connector 33 is fixed to the housing body 31, and the fixed body 32D is connected to the housing body 31 by clamping the connector 33 therebetween.

[0080] With this configuration, by clamping the connector 33 between the fixed body 32D after fixing the fixed body 32D to the installation surface of the installation object, the housing body 31 can be connected to the fixed body 32D via the connector 33. This allows the light guiding rod 10 to be easily attached to the installation surface.

[0081] (Variation) Although the lighting device according to the present invention has been described above based on the first and second embodiments, the present invention is not limited to the first and second embodiments.

[0082] For example, in the lighting devices 1 and 1D in the first and second embodiments, the light source 20 is disposed at the first end 11 of the light guiding bar 10 and the reflecting member 40 is disposed at the second end 12 of the light guiding bar 10, but this is not limiting. Specifically, as in the lighting device 1E shown in Fig. 14, the light source 20 may be disposed at both the first end 11 and the second end 12 of the light guiding bar 10. This allows the illumination light emitted from the light guiding bar 10 to be uniform throughout the light guiding bar 10.

[0083] In the above embodiment, the installation object on which the lighting devices 1 and 2 are installed is an aircraft seat unit, but this is not limiting. Also, in the above embodiment, the lighting devices 1 and 2 are installed on an installation object in a moving object, but this is not limiting. For example, the lighting devices 1 and 2 may be installed on an installation object in a building such as a house or a facility.

[0084] In addition, in the above-described first and second embodiments, the lighting devices 1 and 2 are attached to the installation object with the light guiding rod 10 and the housing 31 in a bent state, but this is not limited to this. For example, the lighting devices 1 and 2 may be attached to the installation object with the light guiding rod 10 and the housing 31 in a straight state without being bent.

[0085] Furthermore, in the above embodiment, light source 20 is an SMD-type LED module, but this is not limiting. For example, light source 20 may be a COB (Chip On Board)-type LED module. When light source 20 is a COB-type LED module, LED elements 22, which are LED chips, are directly mounted on substrate 21. In this case, for example, a blue LED chip is used as LED element 22, and one or more of these blue LED chips are mounted on substrate 21, and the one or more blue LED chips are sealed with a sealing member made of silicone resin containing a yellow phosphor.

[0086] In the above embodiment, the light source 20 is configured to emit white light using a blue LED chip and a yellow phosphor, but this is not limiting. For example, the light source 20 may be configured to emit white light by using a phosphor-containing resin containing red and green phosphors in combination with a blue LED chip, without using a yellow phosphor.

[0087] Furthermore, in the above embodiment, the LED element 22 of the light source 20 uses a blue LED chip that emits blue light. However, this is not limited as long as the light emitted by the light source 20 contains a blue component (blue light). For example, the LED element 22 may use an LED chip that emits a color other than blue. Specifically, the LED element 22 may use an LED chip that emits ultraviolet light. In this case, the phosphor particles may be a combination of phosphors that emit the three primary colors (red, green, and blue). Furthermore, although a phosphor is used as the wavelength conversion material, a wavelength conversion material other than a phosphor may also be used. For example, the wavelength conversion material may be a material that contains a substance that absorbs light of a certain wavelength and emits light of a different wavelength from the absorbed light, such as a semiconductor, a metal complex, an organic dye, or a pigment.

[0088] In the above embodiment, the light source 20 is an LED module using an LED, but the present invention is not limited to this. For example, the light source 20 may be a solid-state light-emitting element other than an LED, such as a semiconductor laser or an organic EL (Electro Luminescence), or may be a fluorescent lamp, a halogen lamp, a xenon lamp, or the like.

[0089] In addition, the present invention also includes forms obtained by applying various modifications to the above-described embodiments that would occur to those skilled in the art, and forms realized by arbitrarily combining the components and functions of the above-described embodiments within the scope of the present invention. Furthermore, the present invention also includes any combination of one or more components in each of the multiple claims described in the claims at the time of filing. Furthermore, when the dependent claims described in the claims at the time of filing are made into a multiple claim or multiple multiple claims that cite any multiple claims (for example, when a multiple claim or multiple multiple claims that cite all of the parent claims of each claim), all forms obtained by combining all of the claims included in the multiple claim or multiple multiple claims are also included in the present invention. [Explanation of symbols]

[0090] 1, 1A, 1B, 1C, 1D, 1E lighting equipment 10 Light guide rod 20 light source 30, 30A, 30B, 30C, 30D Retaining member 31, 31B storage body 32, 32A, 32B, 32C, 32D fixed body 33 Connector

Claims

1. A lighting device to be installed on an installation surface of an installation object, A light source and A light guiding rod that guides light emitted from the light source; a holding member for holding the light guide rod, the holding member includes a housing body extending along the light guide rod and covering and housing the light guide rod, and a fixing body for fixing the housing body to the installation surface, The light guide rod and the housing are both translucent and flexible. Lighting equipment.

2. The housing is connected to the fixed body. The lighting device according to claim 1 .

3. The housing body and the fixing body are connected by fusion.

3. The lighting device according to claim 2

4. The housing body and the fixed body are made of a resin material. The lighting device according to claim 1 .

5. The fixed body has flexibility.

5. The lighting device according to claim 4.

6. The housing body and the fixed body are made of fluororesin.

6. The lighting device according to claim 5.

7. The fixed body is planar and comes into surface contact with the installation surface. The lighting device according to any one of claims 1 to 6.

8. The container is cylindrical, The fixed body extends along the longitudinal direction of the housing body, The connection portion between the housing body and the fixed body is linear, 8. The lighting device according to claim 7.

9. The container is cylindrical, A plurality of the fixing bodies are arranged spaced apart from each other along the longitudinal direction of the housing body.

8. The lighting device according to claim 7.

10. The housing has a semi-cylindrical shape and is open on the side of the installation object, The fixing body is provided in a flange shape on each end of the opening of the housing body.

8. The lighting device according to claim 7.

11. A connector is fixed to the housing, The fixed body is connected to the housing body by clamping the connecting body. The lighting device according to any one of claims 1 to 6.

12. The connecting body is a cylindrical body extending along the housing body.

12. The lighting device according to claim 11.

13. The housing body and the connecting body are made of a resin material.

13. The lighting device according to claim 12.

14. The lighting device according to any one of claims 1 to 6, an installation object on which the lighting device is to be installed, The light guide rod and the housing are curved to follow the shape of the installation surface of the installation object. Mobile object.

Images