Lighting device

Abstract

To provide a lighting device that has a simple structure despite including a movable light source part, provides lightweight and compactification, and is excellent in design property.SOLUTION: A lighting device includes a body part, and a movable light source part capable of changing the position relative to the body part. The movable light source part includes a first light source part and a second light source part arranged so that light irradiation directions intersect each other.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The following disclosure relates to lighting devices. [Background technology]

[0002] Various lighting devices have been proposed in which some components are movable to improve design and operability. For example, Patent Document 1 proposes a lighting fixture in which two LED units are each rotatably attached to the fixture body, and Patent Document 2 proposes a multipurpose lighting fixture in which the direction of illumination can be changed by rotating movable reflecting mirrors arranged on either side of the lamp. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-59471 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-111249 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional lighting devices have problems such as being prone to malfunction due to their complex structure, and difficulty in reducing their weight due to the space required to accommodate moving parts.

[0005] An object of the present disclosure is to provide an illumination device that has a movable light source unit, yet has a simple structure, is lightweight and compact, and has excellent design. [Means for solving the problem]

[0006] The lighting device of the present disclosure comprises a main body and a movable light source unit whose position can be changed relative to the main body, and the movable light source unit has a first light source unit and a second light source unit arranged so that their light irradiation directions intersect each other. [Effects of the Invention]

[0007] The present disclosure makes it possible to provide an illumination device that has a movable light source unit, yet has a simple structure, is lightweight and compact, and has excellent design. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing a simplified external view of a lighting device 1. FIG. [Figure 2] 1 is a diagram showing a simplified external view of a lighting device 1. FIG. [Figure 3] 1 is a diagram showing a simplified external view of a lighting device 1. FIG. [Figure 4] 1 is a diagram showing a simplified external view of a lighting device 1. FIG. [Figure 5] 1 is a cross-sectional view showing a simplified internal structure of the lighting device 1. FIG. [Figure 6] 1 is a diagram illustrating the lighting device 1 in a state where the movable diffusing unit 50 is in a position where it has moved closer to the movable light source unit 10. FIG. [Figure 7] 1 is an example of a block diagram of a lighting device 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of a lighting device according to the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the contents described in the following embodiments, and appropriate design changes can be made within the scope of the configuration of the present disclosure. In the drawings, identical or equivalent elements are given the same reference numerals, and redundant explanations will be omitted. Only the main parts are shown in the drawings. The following description will focus on the main parts and parts related to the present disclosure.

[0010] In this specification, when two lines or planes are "parallel," it means that the angle (absolute value) they form is within the range of 0°±3°. When two lines or planes are "orthogonal" (and "perpendicular"), it means that the angle (absolute value) they form is within the range of 90°±3°.

[0011] (Embodiment 1) 1 to 4 are schematic diagrams illustrating the appearance of the lighting device 1 of this embodiment, with FIGS. 1 and 3 being perspective views and FIGS. 2 and 4 being front views. FIGS. 1 and 2 are diagrams illustrating a state in which the movable light source unit 10 is located at a position that exceeds a predetermined distance D1 from the main body unit 20, and FIGS. 3 and 4 are diagrams illustrating a state in which the movable light source unit 10 is located within the predetermined distance D1 from the main body unit 20. FIG. 5 is a schematic diagram (front view) illustrating the internal structure of the lighting device 1 of this embodiment. The lower part of the main body unit 20 is omitted in FIG. 5. The left-right direction in these diagrams is the X direction (X2-X1), the front-rear direction is the Y direction (Y1-Y2), and the up-down direction is the Z direction (Z1-Z2). The up-down direction Z is preferably a vertical direction.

[0012] (Movable light source section 10) The lighting device 1 comprises a movable light source unit 10 and a main body unit 20. The position of the movable light source unit 10 can be changed relative to the main body unit 20. For example, the position of the movable light source unit 10 can be changed so that it moves closer to or further away from the main body unit 20. Such a lighting device 1 has a simple structure, and therefore not only is it highly structurally reliable and expected to reduce breakdowns, but it also allows for a lightweight and compact design, allowing for a high degree of freedom in structural design.

[0013] In order to more effectively achieve the above-mentioned effects, it is preferable that the movable light source unit 10 is disposed above the main body unit 20 (in the Z1 direction) and be movable in the vertical direction Z relative to the main body unit 20 (see FIGS. 1 to 4). Because such an illumination device 1 has height, the light irradiation area is widened, enabling light to be delivered farther, and it also has excellent design and weight balance. Furthermore, in the case where the illumination device 1 includes an ion generating unit as described below (see Modification 2 below), the height of the illumination device 1 makes it easier for the generated ions to flow into the air.

[0014] The position of the movable light source unit 10 may be manually changeable by a user or automatically changeable electrically. In the latter case, it is preferable that the lighting device 1 includes a first control unit (not shown) that controls the operation of the movable light source unit 10, and that the first control unit controls the change in position (i.e., movement) of the movable light source unit 10 relative to the main body unit 20.

[0015] The movable light source unit 10 is configured from a housing made of, for example, a metal material or a resin material. In Fig. 1 etc., the movable light source unit 10 is configured from a housing having a triangular prism shape, but the shape of the housing is not limited to this shape and may be, for example, cylindrical.

[0016] The movable light source unit 10 includes a plurality of light source units. Each light source unit has a structure in which one or more light sources are arranged on a substrate, and the light sources are light-emitting elements such as light-emitting diodes (LEDs). Each light source is arranged on the substrate so that the direction of the main axis of the light emitted from the light source is perpendicular to the surface of the substrate (i.e., the normal direction). The direction of the main axis of the light emitted from the light source included in the light source unit is referred to as the light irradiation direction of the light source unit. The light irradiation direction corresponds to the direction in which the light travels (traveling direction) within the optical axis direction.

[0017] Of the multiple light source units included in the movable light source unit 10, any two light source units will be referred to as a first light source unit 11 and a second light source unit 12. The first light source unit 11 is configured by arranging one or more light sources 11a on a first substrate 110, and the second light source unit 12 is configured by arranging one or more light sources 12a on a second substrate 120. Each of the light sources 11a, 12a is preferably an LED. That is, the lighting device 1 is preferably an LED lighting device.

[0018] The first light source unit 11 and the second light source unit 12 are arranged so that their light emission directions intersect with each other. For example, if the first substrate 110 and the second substrate 120 are arranged so that they are inclined toward each other, the light emission direction of the first light source unit 11 and the light emission direction of the second light source unit 12 will intersect with each other (see FIG. 5). The acute angle formed by the light emission direction of the first light source unit 11 and the light emission direction of the second light source unit 12 is greater than 3° and equal to or less than 90°.

[0019] When the movable light source unit 10 is located at a position that exceeds a predetermined distance D1 from the main body unit 20 (see FIGS. 1 and 2), it is preferable that at least the first light source unit 11 irradiates light, and when the movable light source unit 10 is within the predetermined distance D1 from the main body unit 20 (see FIGS. 3 and 4), it is preferable that at least the second light source unit 12 irradiates light, and it is also preferable that the first light source unit 11 irradiates an area that is closer to the main body unit 20 than the second light source unit 12. It is preferable that the first light source unit 11 and the second light source unit 12 are arranged so that they can irradiate light in this manner. When the movable light source unit 10 is located at a position more than a predetermined distance D1 from the main body unit 20, light is emitted only from the first light source unit 11, and when the movable light source unit 10 is located within the predetermined distance D1 from the main body unit 20, light is emitted only from the second light source unit 12, so that substantially the same area can be illuminated whether the movable light source unit 10 is located at a position more than the predetermined distance D1 from the main body unit 20 or when the movable light source unit 10 is located within the predetermined distance D1 from the main body unit 20. Furthermore, when light is emitted from both the first light source unit 11 and the second light source unit 12 and the movable light source unit 10 is moved, the area that is difficult to reach with light emitted from the lighting device 1 is reduced, and the illuminated area can be changed whether the movable light source unit 10 is located at a position more than the predetermined distance D1 from the main body unit 20 or when the movable light source unit 10 is located within the predetermined distance D1 from the main body unit 20.

[0020] 1 and the like, in the movable light source unit 10 disposed above the main body unit 20 (in the Z1 direction), the first light source unit 11 is disposed above (in the Z1 direction) the second light source unit 12, and the first light source unit 11 and the second light source unit 12 are disposed so that their light emission directions intersect with each other (see FIG. 5). The light emission direction from the first light source unit 11 has a smaller angle with respect to the downward direction (in the Z2 direction) than the light emission direction from the second light source unit 12, so the first light source unit 11 can emit light to an area closer to the main body unit 20 than the second light source unit 12.

[0021] The distance D between the main body 20 and the movable light source 10 means the minimum value of the distance between the surface of the main body 20 facing the movable light source 10 and the surface of the movable light source 10 facing the main body 20 in the moving direction of the movable light source 10 (the vertical direction Z in FIGS. 1 to 5). Among these, the distance D when the movable light source 10 is at the farthest position from the main body 20 is referred to as the distance D. max The distance D when the movable light source unit 10 moves to the closest position to the main body unit 20 is also referred to as the distance D. min Also called distance D max and distance D min is set appropriately depending on the weight, size, etc. of the main body 20 and the movable light source unit 10.

[0022] The lighting device 1 preferably includes a first control unit that controls the operation of the movable light source unit 10. When the first light source unit 11 is disposed so as to irradiate an area closer to the main body unit 20 than the second light source unit 12, the first control unit preferably controls the turning on and off of each light source of the movable light source unit 10 so that at least the first light source unit 11 irradiates light when the distance D exceeds a predetermined distance D1 (D>D1), and at least the second light source unit 12 irradiates light when the distance D is within the predetermined distance D1 (D≦D1). The predetermined distance D1 is set appropriately depending on the weight, size, etc. of the main body unit 20 and the movable light source unit 10, and may be set, for example, to the distance D max When the length is 100%, it is 50% or more.

[0023] (Main body 20) The main body 20 typically includes a power supply unit 70 such as a battery or a power cord, an electric circuit electrically connected to the movable light source unit 10, and a control unit 60 (e.g., a first control unit) that controls the operation of each unit included in the lighting device 1, but one or more of these units may be provided in the movable light source unit 10. Each control unit is configured, for example, with a CPU or MPU, and executes programs recorded in various storage units or external storage devices. Each control unit may be a microcomputer equipped with a CPU and storage device. In addition, the main body 20, the movable light source unit 10, etc. may be provided with an operation unit (operation buttons, etc.) through which a user inputs instructions.

[0024] The main body 20 is configured with a housing made of, for example, a metal material or a resin material. The shape of the housing is not limited to the shape shown in Fig. 1 etc., and may be, for example, cylindrical. The main body 20 preferably has a weight and size sufficient to support the movable light source unit 10.

[0025] The main body 20 preferably has a light-transmitting portion 21 that transmits light emitted from the movable light source 10. The light-transmitting portion 21 is preferably a transparent portion with excellent light transmittance, and examples of the light-transmitting material that constitutes the light-transmitting portion 21 include glass and transparent resin materials. For example, as shown in FIG. 1, when the movable light source 10 is disposed above the main body 20 (in the Z1 direction) and is movable in the vertical direction Z relative to the main body 20, depending on the position of the movable light source 10, a portion of the upper part of the main body 20 (e.g., portion 21) may overlap the light irradiation area of ​​the movable light source 10, resulting in a shadow cast by the main body 20. This may reduce the irradiation efficiency. However, if the portion 21 is a light-transmitting portion, even when the portion 21 is located within the light irradiation area of ​​the movable light source 10, light can pass through the portion 21, preventing a shadow cast by the main body 20. This effectively prevents a decrease in irradiation efficiency.

[0026] (Holding part 30) The lighting device 1 may further include a holder 30 that holds the movable light source unit 10. Preferably, at least a portion of the holder 30 is receivable in the main body 20, and the movable light source unit 10 moves in conjunction with the holder 30 extending from or being receivable in the main body 20. For example, the holder 30 has a rod-like shape, and an upper portion of the holder 30 holds the movable light source unit 10, and a lower portion of the holder 30 is receivable in the main body 20 (see FIGS. 1 to 6). The holder 30 can extend (extend) in the upward direction Z1 from a state in which the lower portion is receivable in the main body 20 (see FIGS. 2 and 4), and the movable light source unit 10 moves in the upward direction Z1 in conjunction with the movement of the holder 30 (see FIGS. 1 and 3). When the holder 30 extending in the upward direction Z1 is receivable in the main body 20, the movable light source unit 10 moves in the downward direction Z2 in conjunction with the movement of the holder 30 in the downward direction Z2.

[0027] Preferably, a first housing portion 31 for housing the holding portion 30, a first movable portion (for example, a slide rail or the like) for moving the holding portion 30, and the like are provided on the inside or outside of the main body portion 20.

[0028] (Third light source section 40) Preferably, the lighting device 1 further includes a third light source unit 40. The third light source unit 40 is disposed at the bottom of the main body unit 20, and illuminates an area different from the illumination areas of the first light source unit 11 and the second light source unit 12. The third light source unit 40 is configured by disposing one or more light sources 40a on a third substrate 400. The light source 40a is preferably an LED. A plurality of third light source units 40 may be provided in one lighting device. The lighting device 1 shown in FIG. 1 etc. includes two third light source units 40, one of which is designated by the symbol 40A and the other by the symbol 40B.

[0029] The lower part of the main body 20 is a part of the housing constituting the main body 20 whose length from the surface P1 is within 50% (preferably within 30%) of the surface P1 when the length from the surface P1 that is in contact with the installation surface P0 on which the main body 20 is installed to the part that is furthest from the surface P1 in the direction perpendicular to the surface P1 is taken as 100%. The installation surface P0 on which the main body 20 is installed is, for example, the top surface or floor surface of furniture such as a table or shelf.

[0030] 1 and the like, the main body 20 has surfaces P1, P2, and P3 that face an installation surface P0 (not shown), and a third light source unit 40 is provided on each of these surfaces P2 and P3. Surface P1 is in contact with the installation surface P0. The third light source units 40 provided on surfaces P2 and P3 are arranged so that their light irradiation direction faces the installation surface P0. As described above, the main body 20 has surfaces (surfaces P2 and P3) that face the installation surface P0 on which the main body 20 is installed, and the third light source units 40 are preferably arranged so that they irradiate light from the surfaces (surfaces P2 and P3) that face the installation surface P0 toward the installation surface P0. For example, when the movable light source unit 10 is located at the farthest position from the main body 20 in the upward direction Z1, depending on the distance D between the movable light source unit 10 and the main body 20, it may be difficult for light from the movable light source unit 10 to reach the vicinity of the lower part of the main body 20. However, if the lighting device 1 includes the third light source unit 40 as described above, the third light source unit 40 can indirectly illuminate the vicinity of the lower part of the main body unit 20. More specifically, light from the third light source unit 40 is mainly irradiated onto the installation surface P0, and the lighting device 1 can utilize the light reflected by this installation surface P0 as light. In this way, the third light source unit 40 and the movable light source unit 10 can complement each other in terms of light distribution characteristics. Furthermore, the lighting device 1 including the third light source unit 40 has even better design. Note that the surface facing the installation surface P0 is not limited to a surface parallel to the installation surface P0.

[0031] (movable diffusion unit 50) Preferably, the lighting device 1 further includes a movable diffusion unit 50 whose position is changeable relative to the main body 20. The movable diffusion unit 50 is capable of transmitting and diffusing light from the movable light source unit 10. The light from the movable light source unit 10 refers to light emitted from at least one of the first light source unit 11 and the second light source unit 12. By including the movable diffusion unit 50 in the lighting device 1, the illumination area onto which the lighting device 1 emits optimal light is further expanded. Furthermore, when the lighting device 1 includes the third light source unit 40 described above in addition to the movable diffusion unit 50, further optimization of light distribution is possible, further improving operability (also referred to as usability) and further diversifying the applications of the lighting device 1. To more effectively achieve the above-mentioned effects, it is preferable that the movable diffusion unit 50 transmits and diffuses light from the movable light source unit 10 when moved closer to the movable light source unit 10.

[0032] The movable diffusing unit 50 has a light incident surface through which light from the movable light source unit 10 is incident, and a light exit surface through which the light incident on the light incident surface exits. The shape of the movable diffusing unit 50 is not particularly limited, but considering the ease of movement of the movable diffusing unit 50 and the light diffusion efficiency, a flat plate shape is preferable. In the flat plate-shaped movable diffusing unit 50, the main surface on the side closer to the movable light source unit 10 serves as the light incident surface, and the surface on the opposite side serves as the light exit surface. The light exit surface may have a plurality of irregularities arranged randomly or regularly.

[0033] It is preferable that the movable diffusion unit 50 be movable in a direction parallel to the movable direction of the movable light source unit 10. This allows the movable diffusion unit 50 to be easily positioned within the light irradiation area of ​​the movable light source unit 10. For example, when the movable light source unit 10 is movable in the vertical direction Z, it is preferable that the movable diffusion unit 50 also be movable in the vertical direction Z (see FIG. 6). FIG. 6 is a schematic diagram (perspective view) showing the lighting device 1 in a state where the movable diffusion unit 50 is in a position where it has moved closer to the movable light source unit 10.

[0034] It is preferable that the movable diffusion member 50 is provided so that at least a portion thereof can be accommodated in the main body member 20, and that its position can be changed relative to the main body member 20 so that the movable diffusion member 50 extends from or is accommodated in the main body member 20. In this case, it is preferable that a second accommodation member 51 that accommodates the movable diffusion member 50 and a second movable member 52 (e.g., a slide rail or the like) for moving the movable diffusion member 50 are provided, for example, on the inside or outside of the main body member 20. Figures 1 to 5 show a state in which the movable diffusion member 50 is accommodated in the second accommodation member 51, and Figure 6 shows a state in which the movable diffusion member 50 extends from the second accommodation member 51.

[0035] The position of the movable diffusion unit 50 may be manually changeable by a user or automatically changeable electrically. In the latter case, it is preferable that the lighting device 1 includes a second control unit (not shown) that controls the operation of the movable diffusion unit 50, and the second control unit controls the change in position (movement) of the movable diffusion unit 50 relative to the main body unit 20.

[0036] (Variation 1) As described above, it is particularly preferable that the lighting device 1 of embodiment 1 is equipped with the third light source unit 40 and the movable diffusion unit 50, but the lighting device 1 of embodiment 1 may not be equipped with one or both of the third light source unit 40 and the movable diffusion unit 50.

[0037] (Variation 2) The lighting device 1 of embodiment 1 may further include an ion generation unit (not shown). The ion generation unit is installed, for example, inside or outside the main body unit 20. The ion generation unit generates ions by generating a discharge in the air, and then circulates the generated ions in the air. The ion generation unit includes an ion generation unit that generates ions, a holder that holds the ion generation unit, and the like. The lighting device 1 of embodiment 1 may also include a fan. By including the ion generation unit and the fan, air drawn in by the fan passes through the ion generation unit and becomes air containing ions, which can then be more easily released to the outside.

[0038] (Embodiment 2) As described above, it is preferable that the lighting device 1 includes the third light source unit 40, and it is preferable that the lighting device 1 including the third light source unit 40 includes a control unit 63 (also referred to as a third control unit) that controls the irradiation intensity of the third light source unit 40. Fig. 7 is an example of a block diagram of the lighting device 1 of this embodiment.

[0039] It is preferable that the third control unit 63 sets the irradiation intensity S of the third light source unit 40 to a predetermined value S1 or less when the movable light source unit 10 is located at a position exceeding a predetermined distance D2 from the main body unit 20, and sets the irradiation intensity S of the third light source unit 40 to exceed the predetermined value S1 when the movable light source unit 10 is within the predetermined distance D2 from the main body unit 20. That is, it is preferable that the third control unit 63 controls the irradiation intensity S of the third light source unit 40 so that the irradiation intensity S of the third light source unit 40 is set to a predetermined value S1 or less when the distance D between the main body unit 20 and the movable light source unit 10 exceeds the predetermined distance D2 (i.e., when D > D2, S ≦ S1), and sets the irradiation intensity S of the third light source unit 40 to exceed the predetermined value S1 when the distance D is within the predetermined distance D2 (i.e., when D ≦ D2, S > S1). This automatically adjusts the irradiation intensity of the entire lighting device 1 even when the movable light source unit 10 moves, so that the overall irradiation intensity of the lighting device 1 can be maintained approximately constant.

[0040] The predetermined distance D2 is, for example, the distance D max The predetermined distance D2 may be the same as or different from the predetermined distance D1 described above. Furthermore, the predetermined value S1 of the irradiation intensity of the third light source unit 40 is, for example, an intensity that is 50% or less when the maximum value of the irradiation intensity S of the third light source unit 40 is 100%.

[0041] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments and can be implemented in various forms without departing from the spirit of the present disclosure. Furthermore, the components disclosed in the above embodiments can be modified as appropriate. For example, some of the components shown in one embodiment may be added to the components of another embodiment, or some of the components shown in one embodiment may be deleted from the embodiment.

[0042] Furthermore, the drawings mainly show each component in a schematic manner to facilitate understanding of the invention, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the configurations of each component shown in the above embodiment are merely examples and are not particularly limited, and it goes without saying that various modifications are possible within a scope that does not substantially deviate from the effects of the present disclosure. [Explanation of symbols]

[0043] 1: Lighting equipment 10: Movable light source section 11:First light source section 12:Second light source section 11a, 12a, 40a: Light source (e.g. LED) 20: Main body 21:Transparent part 30: Holding part 31: First storage area 40A, 40B: Third light source section 50: Movable diffusion unit 51: Second storage section 52:Second movable part 60: Control section 63: Third control section 70: Power supply unit 110: First board 120:Second board 400: Third board P1: Surface P2: Surface P3: Surface

Claims

1. a main body; a movable light source unit whose position can be changed relative to the main body unit, The movable light source unit has a first light source unit and a second light source unit that are arranged so that their light emission directions intersect with each other.

2. The lighting device according to claim 1 , wherein the movable light source unit is disposed above the main body unit and is movable in the up-down direction relative to the main body unit.

3. When the movable light source unit is at a position that is more than a predetermined distance from the main body unit, at least the first light source unit irradiates light, When the movable light source unit is within the predetermined distance from the main body unit, at least the second light source unit irradiates light, The lighting device according to claim 2 , wherein the first light source unit illuminates an area closer to the main body unit than the second light source unit.

4. The lighting device according to claim 1 , wherein the main body portion has a light-transmitting portion that transmits light emitted from the movable light source portion.

5. Further provided is a movable diffusion part whose position can be changed relative to the main body part, The lighting device according to claim 1 , wherein the movable diffusing unit is capable of transmitting and diffusing light from the movable light source unit.

6. The lighting device according to claim 5 , wherein the movable diffusion section transmits and diffuses light from the movable light source section at a position where the movable diffusion section has moved closer to the movable light source section.

7. Further provided with a third light source unit, 7. The lighting device according to claim 1, wherein the third light source unit is disposed below the main body unit and illuminates an area different from the illumination areas of the first light source unit and the second light source unit.

8. the main body has a surface facing an installation surface on which the main body is installed, The lighting device according to claim 7 , wherein the third light source unit is disposed so as to irradiate light from a surface facing the installation surface toward the installation surface.

9. a control unit for controlling the irradiation intensity of the third light source unit; 8. The lighting device according to claim 7, wherein the control unit sets the illumination intensity of the third light source unit to a predetermined value or less when the movable light source unit is located at a position more than a predetermined distance from the main body unit, and sets the illumination intensity of the third light source unit to exceed the predetermined value when the movable light source unit is located within the predetermined distance from the main body unit.

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