TW202001146A - Lighting device - Google Patents

Abstract

A lighting device (1) comprises: a point light source (52) that emits light; a patterned cover (40) that is positioned to the rear of the point light source (52) and has a translucent section transmitting the light emitted from the point light source (52) and a light blocking section (43) blocking the light emitted from the point light source (52); and a diffusing cover (70) that is translucent, is positioned to the front of the patterned cover (40) and the point light source (52), and diffuses the light coming from the rear and emits the result to the front.

Description

Lighting device

The invention relates to a lighting device.

In the past, among the lighting devices, I have known that there is a lighting device that is not only equipped with a function of simply lighting the surroundings, but also a function of indirect lighting that lights a ceiling or the like. For example, the lighting device of Patent Document 1 includes: a first light source substrate including a plurality of LED elements as a main light source and irradiating light; and a second light source substrate including a plurality of LED elements as a secondary light source and applying light Irradiation. The first light source substrate is configured to emit light downward, and the second light source substrate is configured to emit light upward. [Conventional technical literature] [Patent Literature]

Patent Literature 1: Japanese Patent Laid-Open No. 2017-208160

[Problems to be solved by the invention]

The present invention provides a lighting device that can project patterns onto walls, ceilings, and other building materials. [Technical means to solve problems]

In order to achieve the above object, a lighting device according to one aspect of the present invention includes: a point light source for emitting light; a light-transmitting portion for transmitting light emitted by the point light source; and a pattern cover having a position for blocking the point light source The light-shielding portion of the emitted light is arranged behind the point light source; and the diffusion cover is light-transmissive and is arranged in front of the pattern cover and the point light source to diffuse the light from the rear to the front Fang shot. [Comparing the efficacy of the previous technology]

The lighting device of the present invention can project patterns onto walls, ceilings, and other building materials.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, constituent elements, arrangement positions of the constituent elements, connection patterns, steps, and order of steps and the like shown in the following embodiments are only examples, and do not limit the gist of the present invention. In addition, among the constituent elements in the following embodiments, constituent elements not described in the independent claim are described as arbitrary constituent elements.

In addition, each figure is a schematic diagram, not a rigorous map description. In addition, in each drawing, substantially the same configuration is given the same symbol to omit or simplify the repeated description.

In addition, in the following description of the implementation form and the scope of patent application, there may be expressions such as parallel or central to express the posture or position of more than one object. These expressions also include strictly speaking not for this purpose. Posture or position. For example, the term parallel means not only completely parallel but also substantially parallel, that is, it also includes, for example, a difference of about several percent. The same, vertical, or uniform expressions that express the relationship between more than two pieces of information or objects are also true.

In the following embodiments, for the sake of explanation, the direction in which the diffusion cover is arranged with respect to the light-transmitting support cover is aligned with the Z-axis direction, and the width direction of the lighting device is aligned with the X-axis direction, so that The direction in the X-Z axis direction is consistent with the Y-axis direction, but the corresponding relationship is not limited to the posture of the lighting device according to the present invention during manufacture or use. In the following description, for example, the positive X-axis side means the arrow direction side of the X-axis, and the negative X-axis side means the side opposite to the positive X-axis side. The same is true in the Y-axis direction and the Z-axis direction.

Hereinafter, a lighting device according to an embodiment of the present invention will be described.

(Embodiment 1) FIG. 1 is a perspective view showing a lighting device 1 according to Embodiment 1 of the present invention.

As shown in FIG. 1, the lighting device 1 can perform main lighting and indirect lighting of construction materials such as walls and ceilings, such as ceiling lamps. The lighting device 1 is used by being connected to an external power source by being attached to an installation adapter of an indoor wiring appliance such as a ceiling junction box provided in a building material, for example, and fixed at a predetermined position of the building material. In addition, in the embodiment of the present invention, an example of the lighting device 1 will be described by taking an example of a circle viewed from above as an example, but the shape is not limited thereto, and may be applied to a polygonal shape, for example. , Semicircular, etc.

FIG. 2 is an exploded perspective view of the lighting device 1 according to Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view of the lighting device 1 according to Embodiment 1 of the present invention taken along the line III-III of FIG. 1.

As shown in FIGS. 2 and 3, the lighting device 1 includes an appliance body 3, a light-transmitting support cover 30, a pattern cover 40, a mounting table 50, a point light source 52, a diffusion cover 70, a control circuit not shown and Power supply unit not shown.

The appliance body 3 includes an exterior cover 101, a first base member 110, a second base member 120, a light emitting module 130, and a light source cover 140.

The exterior cover 101 constitutes a part of the housing of the appliance body 3. The exterior cover 101 is a ring-shaped member, which has a circular container shape in a plan view, and an opening is formed in the central portion. The exterior cover 101 fixes the diffusion cover 70 by the outer peripheral portion, and is engaged with the first base member 110 by the inner peripheral portion. In addition, the material of the exterior cover 101 is a material that makes light impermeable (opaque), such as resins such as ABS resin and polycarbonate.

The first base member 110 is disposed on the inner peripheral portion of the exterior cover 101. The first base member 110 is a ring-shaped member having an opening formed in the central portion. The first base member 110 has a flange portion 111 formed at the outer peripheral portion. The first base member 110 is fixed to the exterior cover 101 by a fixing member such as a screw, for example. Specifically, the flange portion 111 protrudes inward from the opening of the first base member 110 and partially overlaps the inner periphery of the exterior cover 101. The fixing member penetrates the flange portion 111 and the inner peripheral portion of the exterior cover 101 to be screwed and fixed, thereby fixing the first base member 110 to the exterior cover 101.

The second base member 120 is disposed on the inner peripheral portion of the first base member 110 and is fixed to the first base member 110. The second base member 120 is a container-like member that is circular in plan view. The second base member 120 has a flange portion 111 that is engaged with the inner peripheral side of the first base member 110. The second base member 120 is made of metal such as aluminum, iron, and galvanized steel plate, and has a light-shielding function to block light. The second base member 120 supports the light emitting module 130. The light emitting module 130 is placed on the surface of the second base member 120 opposite to the Z axis.

The second base member 120 has heat dissipation and is thermally connected to the light emitting module 130 to dissipate the heat emitted by the light emitting module 130.

The first base member 110 and the second base member 120 are made of a light-shielding material that does not transmit light. The first base member 110 and the second base member 120 constitute a shield. The shielding body has light-shielding properties. The shielding system is arranged in a posture in which the "light-transmitting support cover 30, the pattern cover 40 and the point light source 52" and the "light emitting module 130 and the diffusion cover 70" are separated. In this lighting device 1, the shield body is formed with: a first space K1 composed of the shield body and the light-transmitting support cover 30; and a second space K2 composed of the shield body, the exterior cover 101 and the diffusion The cover 70 is composed. Therefore, the light emitted by the point light source 52 existing in the first space K1 will not propagate to the second space K2 through the shield, and the light emitted by the light emitting module 130 present in the second space K2 will not pass through the shield. Spread to the first space K1. That is, the shielding system blocks light passing between the first space K1 and the second space K2.

The light emitting module 130 has a ring shape. The light-emitting module 130 includes a plurality of LED (Light Emitting Diode) light sources 131 and a substrate 132.

The LED light source 131 emits light as light emitted from the lighting device 1, and causes the light to enter the diffusion cover 70 through the light source cover 140. The LED light source 131 is a so-called SMD (Surface Mount Device) type LED element. The so-called surface-mounted LED element is specifically a packaged LED element in which an LED chip (light-emitting element) is embedded in a resin-molded cavity and a phosphor-containing resin is enclosed in the cavity. The LED light source 131 is controlled by a control unit (not shown) provided in the power supply unit to perform lighting and extinction. In addition, the LED light source 131 is controlled by a control unit provided in the power supply unit to perform dimming and toning. For example, "a surface-mounted LED element that emits white light by a combination of a blue LED chip and a yellow phosphor-containing resin" is used as the LED light source 131. In addition, the LED light source 131 can also replace the LED element with a straight tube fluorescent lamp, a laser diode, or the like.

The substrate 132 is a mounting substrate for mounting a plurality of LED light sources 131, such as a ceramic substrate, a resin substrate, or a metal base substrate coated with insulation. A pair of electrode terminals (positive electrode terminals and negative electrode terminals) are formed on the substrate 132 for receiving DC power for causing the LED light source 131 to emit light from the outside. In the embodiment of the present invention, the shape of the light emitting module 130, that is, the ring shape, is formed by the two substrates 132.

The light source cover 140 covers the entire light emitting surface of the light emitting module 130. The light source cover 140 is ring-shaped and corresponds to the shape and size of the light emitting module 130. The light source cover 140 penetrates the light emitted by the plural LED light sources 131 of the light emitting module 130. In the embodiment of the present invention, the light source cover 140 diffuses (disperses) the light emitted from the plural LED light sources 131. The light source cover 140 covers the inner peripheral portion and the outer peripheral portion of each light emitting module 130 and is fixed to the surface of the second base member 120 on the opposite side of the Z axis by the fixing member. The material of the light source cover 140 is, for example, a light-transmitting resin such as polystyrene, polycarbonate, and acrylic.

The light-transmitting support cover 30 has a truncated cone shape, and an opening is formed on the opposite side of the Z axis. In addition, the light-transmitting support cover 30 is not limited to a truncated cone shape, and may be a polygonal truncated cone shape. The light-transmitting support cover 30 is an example of the light-transmitting cover.

The light-transmitting support cover 30 is arranged so as to cover the opening of the exterior cover 101 from the Z-axis positive direction side, that is, it is arranged behind the pattern cover 40. The outer peripheral portion of the light-transmitting support cover 30 is engaged with the flange portion 111 of the first base member 110 and fixed to the first base member 110. The light-transmitting support cover 30 substantially supports the appliance body 3 when the lighting device 1 is installed in a building material.

The light-transmitting support cover 30 includes a flat plate portion 31 and a first light-transmitting portion 32. The material of the light-transmitting support cover 30 is, for example, polystyrene, polycarbonate, acrylic, or other light-transmitting resin. In addition, the so-called rear system corresponds to the side opposite to the Z axis.

The flat plate portion 31 is a portion electrically connected to the mounting adapter, and has a disc shape. The flat plate portion 31 can also be formed of a resin having flame retardancy and electrical insulation. A mounting table 50 on which the point light source 52 is mounted is provided on the flat plate portion 31.

The first light-transmitting portion 32 has light-transmitting properties and is used to transmit "light penetrating the pattern cover 40", that is, "light emitted by the light-emitting module 130 through the pattern cover 40". In the case of cross-sectional observation on the XX plane, the first light-transmitting portion 32 has a truncated cone shape that expands from the outer peripheral portion of the flat plate portion 31 toward the outside. The outer peripheral portion of the first light transmitting portion 32 is engaged with the flange portion 111 of the first base member 110. The material of the first light-transmitting portion 32 is, for example, a light-transmitting resin such as polystyrene, polycarbonate, acrylic, or the like. In addition, the X-Z plane here means a plane formed in the X-axis direction and the Z-axis direction, and it is the same in other cases where the ○-○ plane is described.

The pattern cover 40 is used to penetrate the light emitted by the light emitting module 130 and make the transmitted light enter the first light-transmitting portion 32. When viewed in cross section from the XX plane, the pattern cover 40 is formed in a truncated cone shape inclined from the outer peripheral portion of the flat plate portion 31 toward the outside. The pattern cover 40 may also be a film printed with a pattern. In the embodiment of the present invention, the pattern cover 40 has a truncated cone shape, but it is not limited thereto, and may be a polygonal truncated cone shape.

The pattern cover 40 is configured to surround the point light source 52, and the diameter of the truncated cone will decrease as it moves away from the light source. The pattern cover 40 is disposed between the device body 3 and the light-transmitting support cover 30 and faces the first light-transmitting portion 32 of the light-transmitting support cover 30 with a gap. The end of the pattern cover 40 on the positive side of the Z axis is supported on the outer peripheral portion of the flat plate portion 31, and the end of the side on the opposite side of the Z axis is supported on the second base member 120. The pattern cover 40 is covered by the light-transmitting support cover 30 when the illumination device 1 is viewed from the positive direction of the Z axis, and is diffused by the diffusion cover 70 when the illumination device 1 is viewed from the opposite direction of the Z axis. Covered by. The pattern cover 40 is arranged behind the point light source 52.

The pattern cover 40 includes a second light-transmitting portion 42 and a light-shielding portion 43.

The second light transmitting portion 42 is used to transmit the light emitted by the point light source 52. The material of the second light-transmitting portion 42 is, for example, a resin having translucency such as polystyrene, polycarbonate, acrylic, or the like.

The light-shielding portion 43 has light-shielding properties for blocking light emitted by the point light source 52. The light-shielding portion 43 may be formed by printing a light-shielding material on the second light-transmitting portion 42, or may be formed integrally by extruding the light-shielding portion 43 and the second light-transmitting portion 42. The light blocking portion 43 may be formed on any surface of the second light transmitting portion 42.

The material of the light shielding portion 43 may be a highly reflective material resin that can reflect the light emitted by the point light source 52, or a light absorbing material that can absorb the light emitted by the point light source 52. For example, as a highly reflective material, a hard white resin material such as polybutylene terephthalate-based resin may be used, or a material formed with a metal reflective film such as silver or aluminum may be used.

The second light transmitting portion 42 or the light shielding portion 43 is formed with a predetermined pattern. The pattern can also be any shape, and there is no particular limitation. The pattern may also be a geometric pattern, for example. In the pattern cover 40, for example, a predetermined pattern shown in FIGS. 4 to 6 is formed.

4 is a plan view illustrating the pattern cover 40a of the lighting device 1 according to Embodiment 1 of the present invention. The pattern cover 40a includes a second light transmitting portion 42a and a light shielding portion 43a. FIG. 5 is a plan view illustrating the pattern cover 40b of the lighting device 1 according to Embodiment 1 of the present invention. The pattern cover 40b includes a second light transmitting portion 42b and a light shielding portion 43b. 6 is a plan view illustrating the pattern cover 40c of the lighting device 1 according to Embodiment 1 of the present invention. The pattern cover 40c includes a second light transmitting portion 42c and a light shielding portion 43c. In addition, the pattern of the pattern cover 40 according to the embodiment of the present invention is different from the patterns of FIGS. 4 to 6.

The predetermined pattern may be a geometric pattern in which more than one shape is arranged in a fixed rule, or a pattern in which irregular shapes are combined. In addition, the predetermined pattern shown in FIGS. 4-6 is an example after all, and a predetermined pattern is not limited to FIGS. 4-6, and other patterns are also possible.

As shown in FIGS. 2 and 3, the mounting table 50 is a columnar member extending from the surface of the flat plate portion 31 of the light-transmitting support cover 30 on the side of the pattern cover 40 in the direction opposite to the Z axis. The mounting table 50 is at the lower end on the opposite side of the Z-axis, and has a mounting surface 50a for mounting the substrate 51 on which the point light source 52 is mounted. Although not shown in the drawings, a lead wire for supplying power to the point light source 52 is provided inside the mounting table 50.

The mounting table 50 has heat dissipation and is thermally connected to the point light source 52 to dissipate the heat emitted by the point light source 52. The mounting table 50 is made of metal such as aluminum, iron, and galvanized steel plate. In order to avoid the shadow of the mounting table 50, the diameter of the mounting table 50 is preferably smaller than the diameter of the point light source 52.

The point light source 52 is disposed on the mounting surface 50 a of the mounting table 50 through the substrate 51, and is disposed between the pattern cover 40 and the diffusion cover 70. The point light source 52 is a module with light emitting diodes. The point light source 52 may have the same structure as the LED light source 131 and the substrate 132 described above. The point light source 52 is mounted on the substrate 51 in a direction irradiating light toward the side opposite to the Z axis. The point light source 52 is opposed to the second base member 120 and is arranged to emit light to the pattern cover 40.

The point light source 52 must be regarded as a point relative to the pattern cover 40, but as long as the light penetrating the pattern cover 40 is irradiated to the building material, the pattern generated by the light and shadow can be clearly projected on the building material. In order to be regarded as a point light source 52 relative to the pattern cover 40, for example, with respect to the length of the pattern cover 40 in the width direction (the direction oblique to the Z-axis direction), the light emitting surface of the point light source 52 is at the length Below one-fifth, it is better to be below one-tenth of the length. In addition, the reason for using the point light source 52 in the embodiment of the present invention will be described later.

The diffusion cover 70 is a cover that has translucency and diffuses light. The diffusion cover 70 constitutes a part of the periphery of the lighting device 1. The diffusion cover 70 covers the appliance body 3 and the light emitting module 130. The diffusion cover 70 is fixed to the outer peripheral portion of the exterior cover 101. That is, the diffusion cover 70 is arranged in front of the pattern cover 40 and the point light source 52. The diffusion cover 70 has a flat curved surface protruding in the reverse direction of the Z axis near the center of the light emitting side of the light emitting module 130 and is formed into a flat dome shape. In addition, the front system corresponds to the positive side of the Z axis.

As shown in FIG. 2, the cover 30, the pattern cover 40, the mounting table 50, the point light source 52, the diffusion cover 70, the exterior cover 101, the first base member 110, and the second base member are supported by light transmission 120. The central axis of the light emitting module 130 and the light source cover 140 coincides with the central axis O.

The control circuit includes an electronic circuit for adjusting the DC power output from the power supply unit to the light emitting module 130 and the point light source 52. The control circuit controls the lighting, light-off, dimming, color adjustment and other operations of the light emitting module 130 and the point light source 52 according to control signals such as a remote control. The control circuit realizes these operations by "controlling the microcomputer, processor, etc. of the current value supplied to the light emitting module 130 and the point light source 52 according to the input control signal", or "dedicated circuit".

The power supply unit is housed in a metal box, and a board on which circuit components such as a lighting circuit are mounted is housed inside. In the power supply section, a cable from a commercial AC power supply is connected to supply the commercial AC power supply to the lighting circuit. The power supply unit is electrically connected to the control circuit.

Here, the reason why the point light source 52 is used as indirect illumination will be described using FIG. 7.

7 is an explanatory diagram illustrating an example of a state in which a light shielded by a light shielding portion when a pattern cover is arranged parallel to a ceiling surface is received in a lighting device using LED bulbs.

First, as shown in FIG. 7, in the case of using an LED bulb instead of a point light source as a comparative example, for example, a portion of the light emitted from the position H1 on the upper side of the LED bulb will be blocked by the shading part, and the remaining part will pass through the pattern cover Cover and project onto the ceiling surface. In addition, part of the light emitted from the position H2 on the lower side of the LED bulb is blocked by the shading part, and the remaining part is projected onto the ceiling surface through the pattern cover.

In the comparative example, since the area of the light emitted from the LED bulb is large, even if the pattern is projected onto the ceiling surface by the light emitted from the position H1, the light emitted from the position H2 is also irradiated by the position H1 The shaded part of the pattern formed by the emitted light. And the reverse is also true. Therefore, the pattern projected on the ceiling surface becomes blurred, and the user cannot clearly see the pattern.

Next, the relationship between the pattern cover and the construction material projected by the pattern when the lighting device is installed on the ceiling will be described. The case where the pattern cover is parallel to the ceiling surface will be described.

8 is an explanatory diagram illustrating an example of the state of light blocked by a light shielding portion when a pattern cover and a ceiling surface are arranged in parallel in a lighting device using a point light source. In FIG. 8, the height of the pattern cover with respect to the ceiling surface is A, the height of the point light source with respect to the mounting table is B, and the radius of the pattern cover is C.

In this case, in order to enlarge the pattern of the light and shadow projected on the ceiling surface, it is generally considered to increase the height A or increase the pattern cover (increasing the radius C). Here, when the height A is increased, it is generally considered that the thickness of the lighting device is increased. In the case of increasing the radius C, it is generally considered that the illumination device is made larger in diameter (larger in area).

In addition, it is generally believed that if the height B is too small, the light emitted by the point light source will be blocked by the end of the mounting table, resulting in shadows. Therefore, it is generally considered that the point light source must be at a predetermined height from the mounting table, in other words, the height B must be set above the predetermined value.

It can be seen that the desired size of the pattern of light and shadow projected onto the ceiling surface can be adjusted by adjusting the heights A, B and radius C. When viewing the lighting device from above, the pattern projected to the building material may be larger than the lighting device. For example, the width of the pattern projected to the light and shadow of the building material may be more than 1.5 times the width of the lighting device.

Next, the relationship between the pattern cover and the construction material projected by the pattern when the pattern cover is inclined with respect to the ceiling surface according to the embodiment of the present invention will be described.

FIG. 9 is an explanatory diagram exemplifying the state of the shadow of the light-shielding portion formed by light in the case where the pattern cover is arranged in an inclined attitude with respect to the ceiling surface in the device according to the embodiment of the present invention .

As shown in FIG. 9, the angle between the “virtual straight line V parallel to the ceiling surface” and the “direction of light incident on the light-shielding portion closest to the point light source” is θ. In addition, FIG. 8 also sets the angle θ under the same conditions as in FIG. 9. In this case, the size of the pattern of light and shadow projected onto the ceiling surface by the light emitted by the lighting device 1 of FIG. 8 will be the same as the size of the pattern projected onto the ceiling surface by the light emitted by the lighting device of FIG. 9 the same.

Comparing FIGS. 8 and 9, in FIG. 8, since the pattern cover and the ceiling surface are arranged horizontally, the diameter of the lighting device is increased. However, in FIG. 9, since the pattern cover is positioned relative to the ceiling They are arranged in an inclined state, so that the diameter of the lighting device can be suppressed.

As can be seen from the above description, when such a lighting device 1 is operated as indirect lighting, if only the point light source 52 is turned on, the light emitted by the point light source 52 is incident on the pattern cover 40, part of which The light will be blocked by the light blocking portion 43, and the remaining light will penetrate the second light transmitting portion 42. The light passing through the pattern cover 40 further penetrates the light-transmitting support cover 30 to illuminate the building materials. As a result, as shown in FIG. 10, the pattern corresponding to the pattern cover 40 is projected onto the building material. FIG. 10 is a perspective view showing only the point light source 52 of the lighting device 1 according to Embodiment 1 of the present invention.

Moreover, this lighting device 1 can also be used as normal lighting. In this case, the light emitted by the light emitting module 130 penetrates the light source cover 140 to enter the diffusion cover 70 and penetrates the diffusion cover 70. As a result, the diffused light is emitted from the diffusion cover 70. In addition, in the lighting device 1, the light emitting module 130 and the point light source 52 can be simultaneously turned on.

Furthermore, since the first base member 110 and the second base member 120 of the appliance body 3 block light between the point light source 52 and the light emitting module 130, when only the point light source 52 is lit, The light emitted by the point light source 52 will not be emitted from the diffusion cover 70, and when only the light emitting module 130 is lit, the light emitted by the light emitting module 130 will not be emitted from the transparent support cover 30.

[Effect] Next, the operation and effect of the lighting device 1 in the embodiment of the present invention will be described.

As described above, the lighting device 1 according to the embodiment of the present invention includes: a point light source 52 for emitting light; a light-transmitting portion for transmitting light emitted by the point light source 52; a light-shielding portion 43 for blocking the point light source 52 The emitted light; the pattern cover 40, which is arranged behind the point light source 52; and the diffusion cover 70, which is translucent and arranged in front of the pattern cover 40 and the point light source 52, and adds the light from the rear Spread out and shoot forward.

When the lighting device 1 is installed in a building material, if the point light source 52 is turned on, the light emitted by the point light source 52 will enter the pattern cover 40, and a part of the light will be blocked by the light shield 43, and The remaining light will penetrate the light transmitting portion. Of the light emitted by the point light source 52, the portion blocked by the light blocking portion 43 is shaded. In this way, the light penetrating the pattern cover 40 can project the pattern onto the building material.

Therefore, the lighting device 1 can project the pattern onto a wall, ceiling, or other building materials. In particular, since the diffusion cover 70 is disposed in front of the pattern cover 40 and the point light source 52, the pattern cover 40 is hidden by the diffusion cover 70. Thus, since it is difficult to see the pattern of the pattern cover 40 when the lighting device 1 is turned off, the user is less likely to feel a sense of incongruity.

Furthermore, in the lighting device 1 according to the embodiment of the present invention, the pattern cover 40 has a truncated cone shape. Moreover, the pattern cover 40 is configured to surround the point light source 52, and the diameter of the truncated cone becomes smaller as it moves away from the point light source 52.

In this way, since the pattern cover 40 has a truncated cone shape, the pattern cover 40 is inclined with respect to the Z-axis direction when the cross section of the cross section when the lighting device 1 is cut along the XX plane is observed. Therefore, compared to the case where the pattern cover 40 is disposed parallel to the XY plane, the pattern corresponding to the pattern cover 40 can be projected to a building material in a wider range.

In addition, the lighting device 1 according to the embodiment of the present invention further includes: a light-transmitting support cover 30, which is disposed behind the pattern cover 40, and emits light passing through the pattern cover 40; the light emitting module 130, Emit light toward the diffuser cover 70; and the shielding body is arranged to separate the "light-transmitting support cover 30, the pattern cover 40 and the point light source 52" and the "light emitting module 130 and the diffuser cover 70", The light emitting module 130 is held on the surface of the diffusion cover 70 side. In addition, the diffusion cover 70 covers the light emitting module 130, and diffuses and emits the light emitted by the light emitting module 130 located at the rear. In addition, the shielding body has light-shielding properties.

In this way, when only the point light source 52 is lit in the lighting device 1, the shielding body does not emit the light emitted by the point light source 52 from the diffusion cover 70, and when only the light emitting module 130 is lit, The light emitted by the light emitting module 130 penetrates the pattern cover 40 and the light-transmitting support cover 30 to project the pattern onto the building material. As a result, in this lighting device 1, normal lighting and indirect lighting can be performed individually or simultaneously.

Furthermore, according to the lighting device 1 according to the embodiment of the present invention, the pattern cover 40 is configured such that when the lighting device 1 is observed when the light is turned off, the pattern of the pattern cover 40 cannot be seen through the diffusion cover 70 .

In this way, since the pattern cannot be seen in the lighting device 1 when the light is turned off, the user does not feel a sense of incongruity.

(Modification of Embodiment 1) 11 is a cross-sectional view of a lighting device 11 according to a modification of Embodiment 1. In this modification, the point light source 352 is arranged on the second base member 120. In addition, unlike Embodiment 1, in this modification, it is not provided on the mounting table 50. In addition, other configurations in the lighting device 11 of the embodiment of the present invention are the same as those of Embodiment 1 unless otherwise specified, and the same symbols are assigned to the same configurations, and detailed descriptions of the configurations are omitted.

The point light source 352 is arranged at the central portion of the surface of the second base member 120 of the shielding body on the positive Z-axis side. In this modification, it is arranged on the center line of the lighting device 11, and the center line coincides with the optical axis emitted by the point light source 352. The optical axis system is parallel to the Z axis direction. The point light source 352 is arranged to emit light toward the positive direction of the Z axis. The substrate 351 of the point light source 352 is thermally connected to the second base member 120.

In such a lighting device 11 according to a modification of the present invention, the point light source 352 is disposed on the shielding body in a posture that emits light toward the pattern cover 40.

According to the above, the point light source 352 can be arranged on the second base member 120 (part of the shield). Accordingly, since the point light source 352 can be directed toward the pattern cover 40, the light emitted by the point light source 352 can be easily emitted toward the pattern cover 40. Therefore, it becomes easy to ensure the amount of light emitted through the pattern cover 40 and the light-transmitting support cover 30. As a result, the pattern corresponding to the pattern cover 40 can be projected more vividly to the building material.

(Example 2) The configuration of the illuminating device 201 of the embodiment of the present invention is different from the embodiment 1 in that it does not have the light emitting module 130 of the embodiment 1. In addition, other configurations in the lighting device 201 according to the embodiment of the present invention are the same as those in Embodiment 1 unless otherwise noted, and the same symbols are assigned to the same configurations, and the details of the configurations are omitted. Instructions.

FIG. 12 is a perspective view of a lighting device 201 according to Embodiment 2 of the present invention. FIG. 13 is an exploded perspective view showing a lighting device 201 according to Embodiment 2 of the present invention. 14 is a cross-sectional view of the illumination device 201 according to Embodiment 2 of the present invention taken along the line XIV-XIV of FIG. 12.

As shown in FIGS. 12 to 14, the lighting device 201 includes an exterior cover 210, a pattern cover 220, a frame 230, a mounting table 50, a point light source 252, a diffusion cover 260, a control circuit (not shown) and The illustrated power supply unit.

The exterior cover 210 constitutes a part of the housing of the lighting device 201. The exterior cover 210 has a circular container shape in a plan view, and an annular member having an opening formed in the central portion.

The exterior cover 210 is disposed between the diffusion cover 260 and the pattern cover 220, and supports the diffusion cover 260 so as to cover the pattern cover 220. The exterior cover 210 supports the pattern cover 220 covering its opening. The exterior cover 210 fixes the diffusion cover 260 with the outer peripheral portion, and engages with the pattern cover 220 with the inner peripheral portion. In addition, the material of the exterior cover 210 is a material that does not transmit light (opaque light), such as ABS resin, polycarbonate, and other resins. The exterior cover 210 is an example of a support body.

The pattern cover 220 is configured to cover the opening of the exterior cover 210. The outer periphery of the pattern cover 220 is fixed to the inner periphery of the exterior cover 210. The pattern cover 220 has a shape corresponding to the opening shape of the exterior cover 210. In the embodiment of the present invention, the pattern cover 220 is disk-shaped, but its shape is not limited to a circle, and may be polygonal. The pattern cover 220 is formed with an opening 220a in the central portion. The inner peripheral portion of the pattern cover 220 is engaged with the frame 230 to fix the pattern cover 220 to the frame 230.

The pattern cover 220 includes a light-shielding portion 221 and a second light-transmitting portion 222. The light shield 221 is printed on the surface of the pattern cover 220 on the positive Z-axis side or the surface on the opposite Z-axis side. The light blocking portion 221 constitutes a pattern for blocking the light emitted by the point light source 252.

In addition, a transparent cover of another member may be superimposed on the pattern cover 220. The pattern cover 220 may be disposed on the surface of the transparent cover on the positive side of the Z axis or on the surface of the negative side of the Z axis. The pattern cover 220 may also have a shape corresponding to the transparent cover.

The housing 230 houses a control circuit and a power supply unit. The frame 230 is a bottomed cylindrical body having openings formed at both ends. The frame body 230 is elongated in the Z-axis direction, and the end portion on the opposite side of the Z-axis is engaged with the pattern cover 220. A mounting table 50 protruding from the bottom toward the Z-axis in the opposite direction is arranged inside the housing 230. The mounting table 50 penetrates the opening 220 a of the pattern cover 220.

The point light source 252 is placed on the placement surface 50a at the lower end on the opposite side of the Z-axis of the placement table 50 via the substrate 251. The point light source 252 is disposed between the diffusion cover 260 and the pattern cover 220. When the point light source 252 is placed on the placement surface 50a, it protrudes in the opposite direction of the Z axis than the pattern cover 220. In the embodiment of the present invention, when the illumination device 201 is viewed from the side, the point light source 252 exists at a position overlapping the diffusion cover 260 in the Z-axis direction. In addition, when the illumination device 201 is viewed from the side, the point light source 252 may exist at a position overlapping the exterior cover 210 or a position overlapping the diffusion cover 260 and the exterior cover 210.

The diffusion cover 260 covers the point light source 252 and the pattern cover 220. The diffusion cover 260 is fixed to the outer peripheral portion of the exterior cover 210. When the illumination device 201 is viewed from the opposite direction of the Z axis, the diffusion cover 260 has a predetermined haze that does not allow the pattern drawn on the pattern cover 220 to be seen. Depending on the distance between the diffusion cover 260 and the pattern cover 220, the pattern of the pattern cover 220 may be seen in the diffusion cover 260, so there is haze to the extent that the pattern cannot be seen. Moreover, even if the haze is low, as long as the pattern cover 220 is away from the diffusion cover 260 by a predetermined distance, the pattern of the pattern cover 220 cannot be seen. Therefore, in this lighting device 201, the pattern of the pattern cover 220 can be prevented by the relationship between the "haze of the diffusion cover 260" and the "distance between the pattern cover 220 and the diffusion cover 260" Be seen.

The diffusion cover 260 can be, for example, sandblasted on the surface of the base material; it can also be attached to the surface of the base material with a thin structure of irregularities formed on the surface of the base material; A light-transmitting member; a light-transmitting member in which numerous bubbles are formed on the substrate.

In this lighting device 201, the light emitted by the point light source 252 is incident on the pattern cover 220, a part of the light is blocked by the light blocking portion 221, and the remaining light passes through the second light transmitting portion 42 of the pattern cover 220 And project to build building materials. The light passing through the pattern cover 220 is irradiated to the building materials. Therefore, as shown in FIG. 15, the pattern corresponding to the pattern cover 220 is projected onto the building material. In addition, the light emitted by the point light source 252 also enters the diffusion cover 260 and penetrates the diffusion cover 260. As a result, the diffused light is emitted from the diffusion cover 260. The lighting device 201 projects the pattern corresponding to the pattern cover 220 onto the building material while illuminating the surroundings. 15 is a perspective view showing the lighting device 201 according to Embodiment 2 of the present invention when it is lit.

[Effect] Next, the operation and effect of the lighting device 201 in the embodiment of the present invention will be described.

As described above, the lighting device 201 according to the embodiment of the present invention further includes: a support body disposed between the diffusion cover 260 and the pattern cover 220 and supporting the diffusion cover 260 covering the pattern cover 220. In addition, the point light source 252 is disposed between the diffusion cover 260 and the pattern cover 220. Next, the support system blocks the light emitted by the point light source 252.

In the case where the lighting device 201 is installed in a building material, if the point light source 252 is lit, part of the light emitted by the point light source 252 is incident on the diffusion cover 260 and penetrates the diffusion cover 260 . As a result, the diffused light is emitted from the diffuser cover 260 to illuminate the surroundings. In addition, another part of the light system is blocked by the light shielding portion 221 of the pattern cover 220, and the remaining light system penetrates the light transmission portion of the pattern cover 220. Since the light emitted by the point light source 252 is shaded by the portion blocked by the shading portion 221, the pattern can be projected onto the building material by the light passing through the pattern cover 220.

Therefore, the lighting device 201 can project the pattern onto the wall, ceiling, or other building materials.

(Other modifications) In the above, the lighting device according to the present invention has been described based on the modification examples of Embodiments 1, 2 and Embodiment 1, but the present invention is not limited to the modification examples of Embodiments 1, 2 and Embodiment 1 described above.

For example, in the above-described lighting device 1 according to Embodiment 1 of the present invention, the pattern cover 40 may be parallel to the XY plane. In this case, in order to enlarge the pattern projected to the building material, it is preferable to reduce the height of the point light source 52 relative to the pattern cover 40. In addition, in the relationship between the pattern cover 40 and the point light source 52, the closer the point light source 52 is to the pattern cover 40, the larger the pattern projected on the ceiling surface will be, but the pattern will change due to being too close It is impossible to project onto the ceiling surface, so the height of the point light source 52 relative to the pattern cover 40 is within a predetermined range.

In addition, FIG. 16 shows a system when the lighting device according to each of Embodiments 1, 2 and Modifications of Embodiment 1 described above is installed indoors and lit. By providing these lighting devices 1, 201, various lighting environments can be exhibited. 16 is a perspective view of a system provided with a plurality of lighting devices 1, 201 according to a modification of the present invention.

In addition, in the above-described lighting devices according to each of Embodiments 1, 2 and Modifications of Embodiment 1, the pattern cover may be formed by the light-shielding portion. In this case, the second light transmitting portion is hollow. Therefore, the second light-transmitting portion is not limited to a transparent material, and may mean an opening formed in the pattern cover.

In addition, in the above-described lighting devices according to Embodiments 1, 2 and Modifications of Embodiment 1, the pattern cover can be freely attached and detached, and the pattern cover can be exchanged as appropriate.

In addition, those with ordinary knowledge in the technical field may implement the various modifications that have been considered in accordance with the above-described embodiments 1 and 2 of the present invention and the modifications of the embodiment 1, or without departing from the present invention. Within the scope of the gist, the forms realized by arbitrarily combining the constituent elements and functions in each of Embodiments 1, 2 and Modifications of Embodiment 1 are also included in the present invention.

1, 11, 201‧‧‧ Lighting 3‧‧‧Body 30‧‧‧Transparent support cover (transparent cover) 31‧‧‧ Tablet Department 32‧‧‧The first transparent part 40, 40a, 40b, 40c, 220 ‧‧‧ pattern cover 42, 42a, 42b, 42c, 222‧‧‧Second light transmission part (light transmission part) 43, 43a, 43b, 43c, 221 50‧‧‧Stage 50a‧‧‧Mounting surface 51, 132, 251, 351‧‧‧ substrate 52, 252, 352‧‧‧ point light source 70, 260‧‧‧Diffusion cover 101、210‧‧‧External cover (support body) 110‧‧‧First base member (shielding body) 111‧‧‧Flange 120‧‧‧Second base member (shielding body) 130‧‧‧Light Module 131‧‧‧LED light source 140‧‧‧Light source cover 220a‧‧‧ opening 230‧‧‧frame A, B‧‧‧ height C‧‧‧radius H1, H2‧‧‧ position K1‧‧‧First Space K2‧‧‧Second Space V‧‧‧straight line O‧‧‧Central axis θ‧‧‧angle

FIG. 1 is a perspective view showing a lighting device according to Embodiment 1 of the present invention. 2 is an exploded perspective view showing the lighting device according to Embodiment 1 of the present invention. 3 is a cross-sectional view of the lighting device according to Embodiment 1 of the present invention taken along the line III-III of FIG. 1. 4 is a plan view illustrating the pattern cover of the lighting device according to Embodiment 1 of the present invention. 5 is a plan view illustrating the pattern cover of the lighting device according to Embodiment 1 of the present invention. 6 is a plan view illustrating the pattern cover of the lighting device according to Embodiment 1 of the present invention. 7 is an explanatory diagram illustrating a comparative example, that is, a lighting device using an LED bulb, receiving light blocked by a light shielding portion when a pattern cover is arranged parallel to a ceiling surface. 8 is an explanatory diagram illustrating an example of a state in which a light source blocked by a light shielding portion when a pattern cover and a ceiling surface are arranged in parallel in a lighting device using a point light source. FIG. 9 is an explanatory diagram illustrating an example of the state of light blocked by the shading portion when the pattern cover is arranged in an inclined posture with respect to the ceiling surface in the device according to the embodiment of the present invention. FIG. 10 is a perspective view showing only the point light source of the lighting device according to Embodiment 1 of the present invention. 11 is a cross-sectional view of a lighting device according to a modification of Embodiment 1 of the present invention. 12 is a perspective view showing a lighting device according to Embodiment 2 of the present invention. FIG. 13 is an exploded perspective view showing a lighting device according to Embodiment 2 of the present invention. 14 is a cross-sectional view of the lighting device according to Embodiment 2 of the present invention taken along the line XIV-XIV of FIG. 12. 15 is a perspective view showing the lighting device according to Embodiment 2 of the present invention when it is lit. 16 is a perspective view of a system provided with a plurality of lighting devices according to a modification of the present invention.

1‧‧‧Lighting

30‧‧‧Transparent support cover (transparent cover)

31‧‧‧ Tablet Department

32‧‧‧The first transparent part

40‧‧‧pattern cover

42‧‧‧Second light transmission part (light transmission part)

43‧‧‧Shade

50‧‧‧Stage

50a‧‧‧Mounting surface

51, 132‧‧‧ substrate

52‧‧‧point light source

70‧‧‧Diffusion cover

101‧‧‧External cover (support body)

110‧‧‧First base member (shielding body)

111‧‧‧Flange

120‧‧‧Second base member (shielding body)

130‧‧‧Light Module

131‧‧‧LED light source

140‧‧‧Light source cover

K1‧‧‧First Space

K2‧‧‧Second Space

Claims (6)

A lighting device, including: Point light source to emit light; A pattern cover, arranged behind the point light source, and having: a light-transmitting part for penetrating the light emitted by the point light source; and a light-shielding part for blocking the light emitted by the point light source; and The diffusion cover is light transmissive, and is arranged in front of the pattern cover and the point light source, diffuses light from the rear and emits it toward the front. The lighting device according to claim 1, wherein, The pattern cover is in the shape of a truncated cone and is configured to surround the point light source, and the diameter of the truncated cone decreases as the distance from the point light source increases. The lighting device as described in item 1 or 2 of the request further includes: The light-transmitting cover is arranged behind the pattern cover and allows the light passing through the pattern cover to be emitted; A light emitting module for emitting light to the diffusion cover; and The shielding body is arranged with the light-transmitting cover, the pattern cover and the point light source separated from the light-emitting module and the diffusion cover, and the light-emitting module is held on the side of the diffusion cover Face of The diffusion cover covers the light-emitting module and diffuses the light emitted by the light-emitting module at the rear to emit it; The shielding body has light-shielding properties. The lighting device according to claim 3, wherein, The point light source is disposed on the shielding body in a posture that emits light to the pattern cover. The lighting device as described in claim 1, further includes: The supporting body is arranged between the diffusion cover and the pattern cover, and supports the diffusion cover covering the pattern cover; The point light source is arranged between the diffusion cover and the pattern cover; The support system blocks the light emitted by the point light source. The lighting device according to claim 1 or 2, wherein, When the lighting device is observed when the light is turned off, the pattern cover is configured such that the pattern of the pattern cover cannot be seen through the diffusion cover.

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