JP6770725B2 - Bathroom lighting device - Google Patents

Description

The present invention relates to a bathroom lighting device.

Patent Document 1 describes a bathroom lighting device having a double cover structure with an inner cover and an outer cover on the outside of a rod-shaped light source device. The double cover structure can improve the waterproof performance. As the light source device, an LED, a cold cathode tube, an organic EL, a fluorescent lamp, or the like is used.

Further, in the bathroom lighting device, the inner cover is formed flat at a position facing the bathroom mounting surface (wall surface or ceiling surface), and the outer cover is also formed flat at a position facing the inner cover. There is. That is, the structure is such that light is transmitted only from the surface facing the bathroom mounting surface.

JP-A-2006-048990

In recent years, many lighting devices using LED packages as a light source have come to the market for the purpose of reducing power consumption. The LED package is composed of an LED element, a package substrate that supports a lead frame connected to the LED element, a resin material that encloses and seals the LED element, and the like.

By the way, the LED package has a higher directivity of light than a fluorescent lamp or an incandescent lamp. Therefore, in an indoor lighting device, in order to diffuse the light of the LED package indoors, it is necessary to secure a sufficiently long distance from the LED package to the cover having the light diffusion function. Therefore, the thickness of the lighting device becomes large.

And the bathroom is a particularly small space among the rooms in the building. In order to widen such a narrow space, the bathroom lighting device is required to reduce the amount of protrusion from the bathroom mounting surface (wall surface or ceiling surface). However, in the bathroom lighting device, if the protrusion amount is reduced, the distance from the LED package to the cover becomes shorter. Then, the light of the LED package is not sufficiently diffused, and the light becomes dazzling for the bathroom user, and there is a possibility that the space is not calm.

It is also described that the LED lighting device is used as a light source in the bathroom lighting device described in Patent Document 1. Since the LED lighting device here is described in the same row as the fluorescent lamp and the like, it is considered to be an LED light source unit provided with an LED package and a light diffusion cover. That is, the bathroom lighting device includes an LED package, an LED package cover, an inner cover, and an outer cover. In the bathroom lighting device having such a configuration, the amount of protrusion from the bathroom mounting surface becomes very large, and it is not possible to secure a sufficiently wide space in the bathroom.

Further, in the bathroom lighting device described in Patent Document 1, the inner cover and the outer cover are provided only on the surface facing the bathroom mounting surface. Therefore, the light is transmitted only from the surface located at a position greatly separated from the bathroom mounting surface. With this, there is a possibility that the inside of the bathroom cannot be evenly brightened.

Further, in order to confirm the light emission of the LED package during manufacturing or maintenance, when a double cover structure with an inner cover and an outer cover is adopted, both covers are removed to expose the LED package. However, since it takes man-hours to remove the inner cover and the outer cover, it is required to be able to easily check the light emission.

An object of the present invention is to provide a bathroom lighting device capable of ensuring waterproof performance, reducing the amount of protrusion from a bathroom mounting surface, and evenly brightening the inside of a bathroom when an LED package is used as a light source. It is one of. Another object of the present invention is to provide a bathroom lighting device capable of easily confirming the light emission of the LED package in the double cover structure.

Engaging Ru bathroom lighting device in the present invention, a base member fixed to the bathroom mounting surface, fixed to said base member, a substrate formed in a plate shape, a plurality of LED packages fixed to the substrate, the light is formed by diffusion material, is fixed to the front SL base member or the substrate, an inner cover covering the plurality of LED packages, formed by the light diffusing material, is fixed to the front SL base member, said inner cover disposed outside, and an outer cover covering said inner cover, said inner cover, than the outer cover, the light diffusivity is low and the light transmittance that is formed by a high material.

In engaging Ru bathroom lighting apparatus according to the present invention, the plurality of LED packages, are covered by a double cover structure of the inner cover and the outer cover. Therefore, the bathroom lighting device exhibits high waterproof performance.

Further, both the inner cover and the outer cover are formed of a light diffusing material. Therefore, the point light source of the LED package is diffused by the outer cover after being diffused by the inner cover. In this way, the double cover having a waterproof function also serves as a light diffusion function. From this, even if the amount of protrusion from the bathroom mounting surface is reduced, the point light source of the LED package can be sufficiently diffused. Therefore, the bathroom space can be widened, and the bathroom user can be prevented from feeling the glare of the point light source of the LED package.

Both the inner cover and the outer cover may be formed in a bowl shape . In this case , the light of the plurality of LED packages is transmitted not only from the bottom portion of the bowl shape but also from the peripheral portion of the bowl shape. Therefore, the spread angle of the light of the LED package becomes large. As a result, the bathroom becomes evenly bright. From the above, it becomes a comfortable bathroom space for bathroom users.

Further, according to the bathroom lighting device, the inner cover is made of a material having a lower light diffusing rate and a higher light transmittance than the outer cover. Therefore, the light emission confirmation of the LED package at the time of manufacturing or maintenance can be performed with the inner cover attached to the base member. That is, the operator can confirm the light emission of the LED package by removing only the outer cover. Therefore, workability is improved.

It is a front view of the appearance of a bathroom lighting device. It is a right side view of the appearance of the bathroom lighting device. It is a rear view of the appearance of a bathroom lighting device. It is a vertical sectional view of IV-IV of FIG. It is a front view of a base member. It is a right side view of a base member. It is a front view of the state which the LED package, the IC package and the like are fixed to the base member, and the seal member is attached. It is a right side view of the substrate to which the LED package, the IC package and the like are fixed. It is a front view of the state where the substrate and the inner cover are attached to the base member. It is a right side view of the inner cover. It is a right side view of the outer cover.

(1. Appearance of bathroom lighting device)
The appearance of the bathroom lighting device 1 will be described with reference to FIGS. 1 to 3. The bathroom lighting device 1 is attached to a bathroom mounting surface (not shown), which is a wall surface or ceiling surface of the bathroom. In this example, the bathroom lighting device 1 functions as a lighting device having a circular light transmitting shape. That is, the bathroom lighting device 1 is a thin circular lighting device. However, the bathroom lighting device 1 is not limited to a circle, but may be a polygon such as an ellipse, a square, an elongated shape, or an octagon.

The bathroom lighting device 1 includes a base member 10 and an outer cover 20. The base member 10 is a member fixed to the bathroom mounting surface. The base member 10 is made of a hard resin, and includes a disk-shaped base main body portion 11 and an outer shell 12. The outer shape of the base main body 11 corresponds to the outer shape when viewed from the front of the bathroom lighting device 1. The base main body 11 is provided so that the center protrudes toward the bathroom mounting surface. The central protruding portion of the base main body 11 is formed in a circular shape. The outer shell 12 is provided so as to stand on the side opposite to the bathroom mounting surface from the entire circumference of the outer peripheral edge of the base main body portion 11.

The outer cover 20 is formed in a bowl shape. The outer cover 20 covers the side of the base member 10 opposite to the bathroom mounting surface. Therefore, the outer cover 20 is formed in a shape corresponding to the outer shell 12 of the base member 10. In this example, the outer cover 20 is formed in a circular bowl shape. If the outer shell 12 is in the positive direction, the outer cover 20 will be formed in a square bowl shape.

The outer cover 20 includes a flat plate-shaped outer bowl bottom portion 21 and an outer peripheral portion 22 formed so as to extend from the outer peripheral edge of the outer bowl bottom portion 21 toward the base member 10. In particular, the outer peripheral portion 22 is formed in a shape curved from the outer peripheral edge of the flat plate-shaped outer bowl bottom portion 21 toward the base member 10. The height of the outer cover 20 is formed to be very low. Therefore, the bathroom space can be widened.

Further, the outer cover 20 is made of a hard resin material capable of diffusing light and transmitting light. That is, the outer cover 20 functions as a light transmitting member. The outer cover 20 is, for example, white. Therefore, the light in the shape of the outer cover 20, that is, the circular light is emitted into the bathroom. That is, the bathroom user is suppressed from feeling the glare caused by the point light source of the LED package 32.

(2. Internal structure of bathroom lighting device)
The internal structure of the bathroom lighting device 1 will be described with reference to FIGS. 4 to 11. In the following, the front surface means a surface opposite to the bathroom mounting surface, and the back surface means a surface facing the bathroom mounting surface. The bathroom lighting device 1 includes a base member 10, a substrate unit 30, an inner cover 40, a seal member 50, and an outer cover 20.

As described above, the base member 10 is a member fixed to the bathroom mounting surface. As shown in FIGS. 5 and 6, the base member 10 is made of a hard resin and includes a base main body portion 11 and an outer shell 12. The base main body 11 includes a mounting seat 11a, an outer peripheral flange 11b, a positioning protrusion 11c, a seal groove 11d, and an inner cover positioning opening 11e.

The mounting seat 11a projects to the back side of the center of the base member 10 and is formed in a circular shape in this example. However, the mounting seat 11a is not limited to a circular shape, and may be a polygon, an ellipse, or the like. The mounting seat 11a is a portion fixed to the bathroom mounting surface. The front side of the mounting seat 11a is formed in a circular concave shape. A hole through which an electric cable can be inserted is formed in the center of the mounting seat 11a.

The outer peripheral flange 11b is formed so as to extend radially outward from the front edge of the mounting seat 11a over the entire circumference. The outer shape of the outer peripheral flange 11b is also formed in a circular shape. The positioning projection 11c projects from the surface of the mounting seat 11a. In this example, the positioning protrusions 11c are provided at two locations. The positioning protrusion 11c is formed in an oval shape, and the long axes of the two positioning protrusions 11c are oriented in different directions. Further, the positioning protrusion 11c is formed with a through hole for inserting a fastening screw (not shown) for fixing to the bathroom mounting surface.

The seal groove 11d is formed in an annular shape on the outer peripheral edge of the mounting seat 11a. The inner cover positioning opening 11e is a notch formed in the radial inner wall for forming the seal groove 11d. The inner cover positioning openings 11e are provided at four locations at equal intervals in the circumferential direction. The number of inner cover positioning openings 11e may be two or more.

The outer shell 12 is erected from the outer peripheral edge of the outer peripheral flange 11b toward the front side. The outer shell 12 is formed at the same height over the entire circumference. Further, a locking groove 12a for locking to the outer cover 20 is formed on the inner peripheral surface of the outer shell 12. The locking groove 12a is locked to the locking projection 24 of the outer cover 20 by sliding the outer cover 20 in the rotational direction.

As shown in FIGS. 7 and 8, the substrate unit 30 mainly includes a substrate 31, a plurality of LED packages 32, and an IC package 33. The substrate 31 has a flat plate shape and is formed in a circular shape. The outer shape of the substrate 31 is formed in a shape corresponding to the mounting seat 11a of the base main body 11. Further, the substrate 31 is formed with through holes 31a at positions corresponding to the central holes of the mounting seat 11a and the two positioning protrusions 11c. As shown in FIGS. 4 and 7, the substrate 31 is fixed to the mounting seat 11a of the base main body 11. At this time, the substrate 31 is fixed to the base main body 11 by the through holes 31a of the substrate 31 being penetrated through the two positioning projections 11c. Further, the substrate 31 is connected to a power source (not shown) by a cable.

The plurality of LED packages 32 are fixed to the surface of the substrate 31. The plurality of LED packages 32 are evenly arranged in a range extending from the center of the substrate 31 to the outside in the radial direction and over the entire circumference in the circumferential direction. Each of the plurality of LED packages 32 emits light when electric power is supplied from the power source. The LED package 32 includes, for example, a package substrate, a plurality of LED elements, and a package electrode.

The IC package 33 is fixed to the surface of the substrate 31. The IC package 33 controls the light emission of the plurality of LED packages 32. In addition to the LED package 32 and the IC package 33, various electronic components are mounted on the substrate 31.

The inner cover 40 is formed in a bowl shape as shown in FIGS. 4, 9 and 10. The bowl-shaped opening side of the inner cover 40 is fixed to the base main body 11 or the substrate 31. In this example, the opening side of the inner cover 40 is fixed to the surface of the outer peripheral flange 11b of the base main body 11. Then, the inner cover 40 covers the LED package 32 and the IC package on the surface of the substrate 31. That is, the inner cover 40 exhibits a waterproof function.

The inner cover 40 is made of a hard resin material that can diffuse and transmit light. That is, the inner cover 40 functions as a light transmitting member. In the inner cover 40, the inner cover is, for example, translucent and pale milky white. The inner cover 40 diffuses light, but has a light diffusing rate and a light transmittance such that the back side can be visually recognized by a human. Therefore, even when the inner cover 40 is attached to the base member 10, a human can visually check the LED package 32 or the like fixed to the substrate 31 to confirm the presence or absence of an abnormality.

Further, the inner cover 40 includes a flat plate-shaped inner bowl bottom portion 41, an inner peripheral portion 42, an outer peripheral flange 43, a plurality of locking claws 44, and a fastening screw cylinder portion 45 as constituent parts of the shape. The inner bowl bottom portion 41 is located so as to face the substrate 31 in parallel. In this example, the inner bowl bottom 41 is formed in a circular shape. However, the inner bowl bottom portion 41 is not limited to a circular shape, and may have an arbitrary shape, for example, a polygonal shape or an elliptical shape.

The inner peripheral portion 42 is erected from the entire circumference of the outer peripheral edge of the inner bowl bottom portion 41 toward the substrate 31 side. Therefore, the inner peripheral portion 42 surrounds the facing space between the substrate 31 and the inner bowl bottom portion 41. The inner cover 40 is formed in a flat disk shape. Further, the inner peripheral portion 42 is formed in a vertically cross-sectional shape (cross section along the axial direction) in a shape slightly curved from the outer peripheral edge of the flat plate-shaped inner bowl bottom portion 41 toward the base member 10. However, the inner peripheral portion 42 may be formed in a shape orthogonal to the outer peripheral edge of the inner bowl bottom portion 41.

The outer peripheral flange 43 is formed so as to extend radially outward from the tip of the inner peripheral portion 42 over the entire circumference. The outer shape of the outer peripheral flange 11b is also formed in a circular shape. The outer peripheral flange 43 is fixed to the base main body 11 with screws. The outer peripheral flange 43 is in contact with the surface of the outer peripheral flange 11b of the base main body 11 over the entire circumference. As a result, the inner cover 40 exhibits a waterproof function for the substrate unit 30.

Each of the plurality of locking claws 44 is formed so as to extend radially outward from the outer peripheral edge of the outer peripheral flange 43. The plurality of locking claws 44 are provided at equal intervals in the circumferential direction. The plurality of locking claws 44 are located in the inner cover positioning opening 11e of the base main body 11. In this way, the inner cover 40 functions so as not to be displaced in the circumferential direction with respect to the base member 10.

The fastening screw cylinder portion 45 is formed so as to project from the inner bowl bottom portion 41 toward the back surface side at positions corresponding to the two positioning protrusions 11c. The fastening screw cylinder portion 45 exhibits a positioning function and a waterproof function by being fitted into the positioning protrusion 11c. Further, since the fastening screw cylinder portion 45 has a through hole, a fastening screw (not shown) can be inserted.

As shown in FIGS. 7 and 9, the seal member 50 includes an elastic member and is formed in an annular shape. An O-ring is applied to the seal member 50, for example. The seal member 50 is fitted in the seal groove 11d. As shown in FIG. 4, the sealing member 50 seals between the base member 10 and the outer cover 20. Therefore, the seal member 50 exhibits a high waterproof function.

As described above, the outer cover 20 is made of a light-diffusing and light-transmitting hard resin material. The outer cover 20 is, for example, white. The outer cover 20 has a higher light diffusivity and a lower light transmittance than the inner cover 40. The outer cover 20 is arranged outside the inner cover 40 and covers the inner cover 40.

As shown in FIGS. 1, 4 and 11, the outer cover 20 has a flat plate-shaped outer bowl bottom portion 21, an outer peripheral portion 22, an annular fitting portion 23, and a locking projection 24 as constituent parts of the shape. Be prepared. Here, the outer bowl bottom portion 21 and the outer peripheral portion 22 are design portions that can be seen from the outside, and the annular fitting portion 23 and the locking projection 24 are non-design portions that cannot be seen from the outside.

The outer bowl bottom portion 21 is located parallel to the substrate 31 and the inner bowl bottom portion 41 and facing the inner bowl bottom portion 41. That is, the outer bowl bottom portion 21 is arranged at a distance from the surface of the inner bowl bottom portion 41 in the normal direction of the substrate 31. In this example, the outer bowl bottom portion 21 is formed in a circular shape. However, the outer bowl bottom portion 21 is not limited to a circular shape, and may have an arbitrary shape, for example, a polygonal shape or an elliptical shape.

The outer peripheral portion 22 is erected from the entire circumference of the outer peripheral edge of the outer bowl bottom portion 21 toward the base member 10 side. The outer cover 20 is formed in a flat disk shape. Further, the outer peripheral portion 22 is formed in a vertical cross section (cross section along the axial direction) in a shape curved from the outer peripheral edge of the flat plate-shaped outer bowl bottom portion 21 toward the base member 10. Further, the outer peripheral portion 22 is arranged so as to surround the outer side of the inner peripheral portion 42. That is, the outer peripheral portion 22 is arranged at a distance from the inner peripheral portion 42 in the surface direction of the substrate 31.

The annular fitting portion 23 is formed so as to extend further in the axial direction from the tip of the outer peripheral portion 22 over the entire circumference. The radial outer surface of the annular fitting portion 23 is formed with a step in the radial direction from the outer peripheral portion 22. Then, the annular fitting portion 23 is fitted to the inner peripheral side of the outer shell 12 of the base member 10. Further, the tip of the annular fitting portion 23 comes into contact with the seal member 50. That is, the seal member 50 exhibits a seal function (waterproof function) by being sandwiched between the seal groove 11d of the base main body portion 11 of the base member 10 and the annular fitting portion 23 of the outer cover 20.

A plurality of locking projections 24 are formed on the outer peripheral surface of the annular fitting portion 23 in the circumferential direction. The locking protrusion 24 is, for example, an L-shaped protrusion. The locking projection 24 is locked in the locking groove 12a of the outer shell 12. In this way, the outer cover 20 can be fixed to the base member 10.

(3. Functional description of the outer cover 20 and the inner cover 40)
The functions of the outer cover 20 and the inner cover 40 will be described in detail. The inner cover 40 is made of a material having a lower light diffusivity and a higher light transmittance than the outer cover 20. Therefore, in a state where the outer cover 20 is attached to the base member 10, a human cannot visually recognize the inside of the outer cover 20, that is, the substrate unit 30 and the inner cover 40.

In the state where the LED package 32 is emitting light, the point light source of the LED package 32 is first diffused by the inner cover 40. The light transmitted through the inner cover 40 is further diffused by the outer cover 20. Here, the inner cover 40 has a lower light diffusivity than the outer cover 20. Therefore, the point light source of the LED package 32 is diffused in the state where only the inner cover 40 is transmitted, but the state where it can be recognized as a point light source by humans is maintained. However, when the light transmitted through the inner cover 40 is transmitted through the outer cover 20, it is sufficiently diffused so that it cannot be recognized as a point light source by humans.

In this way, the point light source of the LED package 32 is diffused by the inner cover 40 and then further diffused by the outer cover 20. Therefore, even if the entire bathroom lighting device 1 has a thin shape, the point light source of the LED package 32 is sufficiently diffused.

In particular, the outer bowl bottom portion 21 of the outer cover 20 is separated from the inner bowl bottom portion 41 of the inner cover 40, and the outer peripheral portion 22 of the outer cover 20 is separated from the inner peripheral portion 42 of the inner cover 40. Therefore, the point light source of the LED package 32 is surely diffused by each space between the inner cover 40 and the outer cover 20.

Further, electronic components such as the LED package 32 and the IC package 33 mounted on the substrate 31 are covered with a double cover structure of the inner cover 40 and the outer cover 20. Therefore, the bathroom lighting device 1 exhibits a high waterproof function. In particular, the outer cover 20 exhibits a higher waterproof function due to the sealing member 50.

As described above, the inner cover 40 and the outer cover 20 have both a function as a double cover structure as a waterproof function and a light diffusion function. From this, even if the amount of protrusion from the bathroom mounting surface is reduced by making the bathroom lighting device 1 thin, the point light source of the LED package 32 can be sufficiently diffused while exhibiting a high waterproof function. Therefore, the bathroom space can be widened, and the bathroom user can be prevented from feeling the glare of the point light source of the LED package.

Further, both the inner cover 40 and the outer cover 20 are formed in a bowl shape. That is, the light of the plurality of LED packages 32 is transmitted not only from the bottom portion of the bowl shape but also from the peripheral portion of the bowl shape. Therefore, the light spread angle of the LED package 32 becomes large. As a result, the bathroom becomes evenly bright. From the above, it becomes a comfortable bathroom space for bathroom users.

Further, the inner cover 40 is made of a material having a lower light diffusivity and a higher light transmittance than the outer cover 20. Therefore, the light emission confirmation of the LED package 32 at the time of manufacturing or maintenance can be performed with the inner cover 40 attached to the base member 10. That is, the operator can confirm the light emission of the LED package 32 by removing only the outer cover 20. Therefore, workability is improved.

Further, the radius of curvature of the connection portion of the inner peripheral portion 42 of the inner cover 40 with the inner bowl bottom portion 41 is formed to be smaller than the radius of curvature of the connection portion of the outer peripheral portion 22 of the outer cover 20 with the outer bowl bottom portion 21. ..

1: Bathroom lighting device, 10: Base member, 11: Base body, 11a: Mounting seat, 11b: Outer flange, 11c: Positioning protrusion, 11d: Seal groove, 11e: Inner cover positioning opening, 12: Outer shell, 12a: Locking groove, 20: outer cover, 21: outer bowl bottom, 22: outer peripheral part, 23: annular fitting part, 24: locking protrusion, 30: substrate unit, 31: substrate, 31a: through hole, 32: LED package, 33: IC package, 40: Inner cover, 41: Inner bowl bottom, 42: Inner peripheral part, 43: Outer flange, 44: Locking claw, 45: Fastening screw cylinder, 50: Seal member

Claims (5)

The base member fixed to the bathroom mounting surface and
A substrate fixed to the base member and formed in a flat plate shape,
A plurality of LED packages fixed to the substrate and
An inner cover formed of a light diffusing material, fixed to the base member or substrate, and covering the plurality of LED packages.
An outer cover formed of a light diffusing material, fixed to the base member, disposed outside the inner cover, and covering the inner cover.
With
A bathroom lighting device in which the inner cover is made of a material having a lower light diffusing rate and a higher light transmittance than the outer cover. The inner cover is formed of a light diffusing material and is formed in a bowl shape, and the opening side of the bowl shape is fixed to the base member or the substrate to cover the plurality of LED packages.
The outer cover is formed of a light diffusing material and is formed in a bowl shape, the opening side of the bowl shape is fixed to the base member, and the outer cover is arranged outside the inner cover to cover the inner cover. The bathroom lighting device described. The inner cover includes a flat plate-shaped inner bowl bottom portion facing the substrate, and an inner peripheral portion surrounding the space facing the inner bowl bottom portion and the substrate.
The bathroom lighting device according to claim 1 or 2, wherein the outer cover includes a flat plate-shaped outer bowl bottom portion facing the inner bowl bottom portion and an outer peripheral portion surrounding the outer side of the inner peripheral portion. The inner bowl bottom portion and the outer bowl bottom portion are arranged at a distance in the normal direction of the substrate.
The bathroom lighting device according to claim 3 , wherein the inner peripheral portion and the outer peripheral portion are arranged at a distance in the surface direction of the substrate. The bathroom lighting device according to claim 3 or 4 , wherein the inner bowl bottom portion and the outer bowl bottom portion are formed in a circular shape.

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