JP2002289005A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device which can well light a cup-shape object to be lighted where an aromatic is stored from the lower direction. SOLUTION: A light source 3 housed in a casing B is arranged in the inside of a body A which has an opening formed on the top end where a cup-shape object C to be lighted is inserted. The center of a light controlling member 15A in an upper wall of the casing B is formed so as to project in the upper direction. A concave lens 15B is inserted in the center position. Thus, the lighting device is constituted so that light from the light controlling member 15 A and light from the concave lens 15B are guided into the object C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting apparatus having a light source for transmitting a light beam upward to the inside of a main body, and an opening for supporting an illuminated object mounted on the main body. Related to the device.

[0002]

2. Description of the Related Art There is an illuminating device constructed as described in Japanese Utility Model Application Laid-Open No. 58-174125. In this prior art, a light bulb is arranged inside a side wall (main body). A transparent gas-permeable container (object to be illuminated) is configured to be supported on the upper part of the main body. By illuminating the gas-permeable container from below, the gas-permeable container and the transparent gel body contained in the gas-permeable container are illuminated. Can be appreciated.

[0003]

However, in the case where the illuminated object is simply illuminated by a light beam from a light source disposed below, as in the illumination device described in the prior art, a portion of the illuminated object close to the light source is not provided. Is brighter, and becomes darker as the distance from the light source increases, so that from the viewpoint of appreciating the illuminated object, the difference in brightness becomes too large, and there is room for improvement. Further, while it is preferable to illuminate the illuminated object with uniform brightness, an object that produces a shadow by this illumination is not suitable for appreciation, and soft illumination such as indirect illumination is also required. In particular, when illuminating an object to be illuminated, it is necessary to guide a light beam in a spotlight to a required part, and an illumination device capable of such illumination is desired.

An object of the present invention is to rationally construct an illuminating device capable of illuminating an illuminated object from below.

[0005]

The features, functions and effects of the lighting device according to claim 1 of the present invention are as follows. (Features) In a lighting device provided with a light source for transmitting light rays upward to the inside of the main body, and an opening for supporting the illuminated body in a mounted state is formed on the upper part of the main body, An illuminator is disposed at an intermediate position between the light source and the opening, and the illuminator includes a lens portion and a dimming member having a lower light transmittance than the lens portion.

According to the above-mentioned feature, the light beam transmitted upward from the light source reaches the illuminating body constituted by the lens portion and the light control member, and among the light beams, the light beam that reaches the light control member is Since a part of the light control member is diffused inside when transmitted through the light control member, the light is transmitted from a wide surface of the entire light control member, thereby enabling illumination in which a shadow is hardly formed. In addition, among the light beams, the light beam that reaches the lens portion diverges the light beam when the lens portion is a concave lens, thereby making it possible to send an average amount of light to each portion on the bottom surface of the illuminated body. In the case where the lens portion is a convex lens, the light beam can be converged to locally transmit the light beam. As a result, not only can the illuminated body be illuminated indirectly with light rays from the dimming member, but also the light from the lens unit can be used to provide unbiased and average illumination, and brightly illuminate areas where needed. A simple lighting device was constructed.

[0007] The features of the lighting device according to claim 2 of the present invention,
The operation and effect are as follows. (Features) In the lighting device according to claim 1, the main body is formed in a circular shape in a plan view, a circular opening is formed in an upper end of the main body, and the light source is located at a central position in a plan view inside the main body. A light control member having a circular shape in a plan view and a central portion protruding upward is disposed at a position above the light source, and a convex lens or a concave lens is disposed as the lens unit at the center position of the light control member. There is a point.

According to the above feature, since the circular dimming member is formed so as to protrude upward from the central portion, a portion near the central portion of the dimming member approaches the light source. By avoiding the situation of excessively adjusting the light, the light beam is guided to the entire light control member, and the light from the light control member can be illuminated on the illuminated body. It leads to the object to be illuminated and enables average illumination and local illumination. As a result, it has become possible not only to provide a more average and unbiased illumination, but also to illuminate a required location brighter than other locations.

[0009] The features of the lighting device according to claim 3 of the present invention,
The operation and effect are as follows. (Features) In the lighting device according to claim 2, a casing having a sealed structure is disposed at a lower portion in the main body, and the light source and a battery housing for supplying power to the light source are disposed inside the casing. The point is that the upper wall of the casing is also used as the light control member.

According to the above features, even if dust or water drops enter the inside of the main body, the dust or water drops are prevented from reaching the light source and the battery housing in the casing. The emitted light can be sent to the illuminated object via the upper wall functioning as a light control member. As a result, the cost increase can be suppressed without providing a casing separately from the dimming member, and the light source and the battery housing can be protected.

[0011] The features of the lighting device according to claim 4 of the present invention,
The operation and effect are as follows. [Features] The lighting device according to any one of claims 1 to 3, wherein a reflecting plate that reflects light rays upward is disposed below the light source.

[Operation / Effect] According to the above feature, the light beam sent downward from the light source is reflected by the reflector and guided upward. As a result, the object to be illuminated can be efficiently illuminated by using light rays without waste of light rays.

[0013] The features of the lighting device according to claim 5 of the present invention,
The operation and effect are as follows. [Features] In the lighting device according to any one of claims 1 to 4, the illuminated body is formed of a transparent or translucent cup-shaped member having a projection formed on a lower surface of the illuminated body. It is in the point.

[Operation / Effect] According to the above feature, since the illuminated body is constituted by a cup-shaped member having a protruding portion formed on the lower surface, when the illuminated body is set to the illuminating device, The projection of the object to be illuminated comes close to the illuminator, and it is possible to guide light rays from the projection to the inside of the cup-shaped member. As a result, the illuminated body can be illuminated relatively brightly by effectively using at least the light amount of the light source.

[0015] The features of the lighting device according to claim 6 of the present invention,
The operation and effect are as follows. [Feature] The lighting device according to any one of claims 1 to 4, wherein the light source includes three types of light emitting diodes of red, green, and blue, and the three types of light emitting diodes are independently driven. And a control means for changing the hue of the light source over time.

[Operation / Effect] According to the above feature, since the hue of the light beam illuminating the illuminated object changes with time, it is possible to illuminate the illuminated object with a light beam having a different hue at the viewing timing. . As a result, the object to be illuminated can be appreciated with various colors.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, a casing B having a sealed structure is provided inside a cylindrical main body A having openings 1 and 2 formed at an upper end and a lower end, and a light source 3 is provided inside the casing B. , Control board 4 and battery housing 5
And a switch unit SW in which a power switch 7 and a dimming switch 8 are unitized to constitute a lighting device. The pair of operation knobs 7A and 8A of the switch unit SW are arranged so as to be exposed on the lower outer surface of the main body A. This illumination device is used in a form in which a translucent (may be transparent) cup-shaped illumination target C is fitted into the opening 1 at the upper end of the main body A. By illuminating the illuminating object C with a light beam from the light source 3, not only the illuminated object C but also illumination of a storage object inside the illuminated object C is performed.

The illuminated object C has a ring-shaped contact portion 10 which is in contact with the opening 1 at the upper end of the main body A on the outer peripheral portion of the bottom wall, and has a projecting portion projecting downward at a lower portion thereof. 11 is formed in a cup shape having a substantially constant thickness and opening upward. The figure shows a state in which a transparent gel-like fragrance 12 that allows light rays to pass therethrough is stored as an example of a storage item. In addition, other than a fragrance | flavor, an ornamental plant, ornaments that can be illuminated by lighting, and accessories can be considered as the storage items.

The main body A has a circular shape in a plan view and a trapezoidal shape in a side view by making the upper end side slightly smaller in diameter than the lower end side. ing. The main body A is integrally formed of a transparent resin (a material will be described later) through which light can pass, and the surface of this resin is processed into a polished glass to diffuse the light.

The casing B has a structure in which an upper wall 15 and a side wall 16 as an illuminator are integrally formed so as to be circular in a plan view, and a plate-shaped bottom wall 17 is fixed by a plurality of screws 18. The upper wall 15 and the side wall 16 are made of a translucent (or transparent) resin (a material will be described later) that transmits light. An annular concave fitting groove Ad is formed in the inner surface of the lower portion of the main body, and a fitting portion 16d which can fit into the fitting groove Ad and is separable on the outer surface of the side wall 16 of the casing B. The main body A is formed into an annular shape, and the fitting portion 16d is elastically fitted into the fitting groove Ad.
And the casing B are connected to each other, and the casing B is pulled out from the main body A to be separated from each other. In particular, a white paint film is formed by silk printing on the upper surface of the control board 4 disposed inside the casing B so as not to absorb the light from the light source 3, and the operation knobs 7A and 8A are attached to the main body A. A notch Ae is formed in the lower part of the main body A so as to be exposed from the main body A.

Upper wall 15 of casing B (illuminator)
Is a light control member 15A formed in a circular shape in a plan view and having an upper end projecting upward toward the center, and a light control member 15A
And a concave lens 15B (an example of a lens portion) fitted and fixed at the center position of the lens.

Although the concave lens 15B has a higher light transmittance and a higher refractive index than the light control member 15A, the same material as the body A and the case B can be used. Specifically, resins such as Zeonoa (<cycloolefin polymer> registered trademark of Nippon Zeon Co., Ltd.), polycarbonate, acrylic and the like are suitable in terms of transparency and impact resistance, but glass can also be used. In the case of the concave lens 15B, these resins are used in a transparent state like the optical lens.
In the case of the casing B (upper wall and side wall), the light source 3 can be used in a form capable of diffusing light rays by processing the surface like ground glass as described above, or using a colored resin.
Technology to color light rays from the surface, use in a form to obtain indirect illumination light using a translucent resin, or vacuum evaporation of a thin metal film such as aluminum or gold on the surface It is also possible to use in the form of reflecting a part of the light beam on the surface.

Since the illumination system is configured as described above,
As shown in FIG. 5, the light beam emitted from the light source 3 reaches the concave lens 15B, refracts and diverges, and illuminates the illuminated object C on average without performing biased illumination. The light beam that has reached the dimming member 15A is
Although a part is absorbed when passing through the light control member 5A, the light is scattered inside the light control member 15A, and as if this light control member 1
Since the light is transmitted from a wide surface so that the entire 5A emits light, the same soft light as the indirect illumination is transmitted to perform illumination in which a shadow is hardly formed. The reflected light is reflected inside the casing B and further diffused to average the light amount. In particular,
Since the light control member 15A is formed in a shape in which the center position protrudes upward, the light control member 15A is
To avoid the phenomenon that the center of the
Are transmitted to the dimming member 15A on average, so that illumination without bias can be performed. The direction (direction by refraction) of the light beam when the light beam from the light source 3 passes through the light control member 15A, the concave lens 15B, or the illuminated object C can be described according to Snell's law.

The light source 3 includes three types of high-brightness light emitting diodes LED-R, LED-B, and LED-G of red (R), green (G), and blue (B), which are three primary colors by an additive method. 6) in a single package, and the battery accommodating portion 5 is formed by forming a space for accommodating a plurality of dry batteries by forming a bottom wall 17, and a lid for opening and closing this space. The body 19 is provided so as to be detachable from the bottom wall 17.

As shown in FIG. 6, the control board 4 includes a 4-bit microcomputer 20 as control means. The microcomputer 20 and three kinds of high-intensity light emitting diodes LED-R constituting the light source 3 are provided. , LED-B and LED-G, a power system for supplying power from the dry battery stored in the battery storage unit 5 is formed, and
A power control system for controlling the light source 3 is formed, and a signal system for inputting signals from the power switch 7 and the dimming switch 8 to the microcomputer 20 is formed.

The microcomputer 20 is configured to operate according to a preset program. That is, when the power switch 7 is turned on, a timer composed of software is operated to set three types of light sources 3 at predetermined intervals or at timings set based on internally generated random numbers. An automatic dimming process program for supplying power to one or more of the light emitting diodes to obtain a light beam of a hue based on the color addition method is executed, and a dimming switch is executed when the program is executed. When 8 is turned on, a program for an arbitrary light control process for obtaining an arbitrary hue prior to the automatic light control process is executed. In each of the programs for the automatic light control processing and the arbitrary light control processing, a basic processing mode is set such that the power supply is stopped when a preset time of about two hours has elapsed.

In particular, in this process, when starting driving any one of the three types of light emitting diodes, the power is increased stepwise, and when the driving is stopped, the power is decreased stepwise so that the PWM (Pulse Pulse) is reduced. Width Modulation), and by providing a dedicated power control system, the respective light emitting diodes LED-R, LED-B, LED-G
In addition to adjusting the brightness of the light source, the number of hues of the light source obtained by the additive method may be increased (7 colors or more). If the light control switch 8 is turned ON while the automatic light control processing is being performed,
The process shifts to an arbitrary dimming process by an interrupt process. However, as an operation for obtaining a light beam of an arbitrary hue, it is necessary to sequentially switch light emitting diodes for supplying power each time the dimming switch 8 is turned on. A processing mode for obtaining a light beam having the following hue has been considered.

As described above, according to the present invention, by setting the cup-shaped illuminated object C to be placed on the opening 1 at the upper end of the main body A, the illuminated object C and the illuminated object are set. As shown in FIG.
In addition to being able to illuminate with a light beam diverged by refraction of 5B and illuminating with an average light amount without bias in the light amount,
Since the illuminated object C can be illuminated by the soft light beam diffused in 5A as in the indirect illumination, the illumination can be performed in a state where no shadow is formed. Further, during this illumination, light rays diffusely reflected inside the casing B reach the main body from the dimming member 15A, so that the dimming member 15A and the main body are illuminated, and the entire lighting device is brightened to indicate presence. ing. Further, when the illumination is performed in this manner, the projection 11 on the lower surface of the illuminated object C is close to the concave lens 15B. 12 can be strongly illuminated.

In particular, unlike a light source using a light source having a low color temperature, such as a light bulb, as a light source, three types of light-emitting diodes LED-R, LED-B, and LED-G, which are three primary colors, are used. In addition, it is possible to change the hue of the light beam and to obtain a light beam having a necessary hue, so that the viewer is not bored and enjoys the eyes of the viewer.

Further, a casing B, which is sealed, is fitted into the inside of the main body A, and the light source 3, the control board 4, the battery housing 5, and the switch unit SW are housed in the casing B. Therefore, for example, even if the liquid stored in the illuminated object C flows into the main body A by mistake, the electric system is not damaged. By removing B, dirt can be easily removed.

[Other Embodiments] The present invention can be implemented by, for example, the following configuration in addition to the above embodiment.

(A) As shown in FIG. 7, the control board 4
The reflector 4 </ b> R is superposed and fixed on the upper surface of the light source 3 so as to reflect light rays going downward from the light source 3 upward. In this configuration, it is conceivable to form a metal film such as aluminum on the surface of a resin plate by a vacuum deposition technique, or to finish the surface of the reflection plate 4R to a mirror surface by applying chrome plating or the like to the metal plate. Can be With such a configuration, light rays going downward from the light source 3 inside the casing B are reflected upward by the reflection plate 4R to reduce waste of light rays. As a result, the light amount of the light source 3 is at least reduced. Enables bright lighting.

(B) By providing the lens portion with a convex lens, a light beam is focused at a specific position on the illuminated body to perform spotlight-like illumination. In addition, the embodiment is implemented in such a manner that the thickness of the lens portion is reduced by using a Fresnel lens for the lens portion.

(C) By printing a pattern or picture on the light control member, or by forming a pattern or picture with a thin metal film on the light control member using a vacuum deposition technique, the pattern or picture is applied to the main body A. We carry out so that we can project.

(D) A light bulb or a fluorescent lamp is used as the light source instead of the light emitting diode. That is, the cost of the light source can be reduced by using a light bulb, and a white light beam can be obtained by using a fluorescent lamp.

(E) The driving mode of the three types of light emitting diodes is artificially switched without a control device. Alternatively, only a switch capable of switching between a state in which power is supplied to a light bulb as a light source and a state in which power is cut off is provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lighting device in a state where an object to be illuminated is set.

FIG. 2 is an exploded perspective view of the lighting device.

FIG. 3 is a cross-sectional view of a lighting device in a state where an object to be illuminated is set.

FIG. 4 is a bottom view of the lighting device.

FIG. 5 is a diagram showing a direction in which a light beam is sent in the illumination system.

FIG. 6 is a block circuit diagram of a control system.

FIG. 7 is a sectional view showing a portion of a control board according to another embodiment;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening 3 Light source 4 Control board 15 Top wall 15A Dimming member 15B Lens part 20 Control means A Main body B Casing C Illuminated body

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Claims (6)

[Claims] 1. A lighting device comprising: a light source for transmitting a light beam upward to an inside of a main body; and an opening for supporting an illuminated body in a mounted state formed on an upper portion of the main body, An illuminator is arranged at an intermediate position between the light source and the opening inside the main body, and the illuminator includes a lens unit and a dimming member having a light transmittance lower than that of the lens unit. Lighting equipment. 2. The main body is formed in a circular shape in a plan view, a circular opening is formed at an upper end of the main body, and the light source is disposed at a center position in a plan view inside the main body. 2. A light control member having a circular shape in plan view and a central portion projecting upward at an upper position, and a convex lens or a concave lens is disposed as the lens portion at the center position of the light control member. Lighting equipment. 3. A casing having a sealed structure is arranged at a lower portion in the main body, and the light source and a battery housing for supplying power to the light source are arranged inside the casing. The lighting device according to claim 2, wherein the lighting device is also used as a light control member. 4. The lighting device according to claim 1, further comprising a reflector disposed below the light source to reflect light rays upward. 5. The illuminated body according to claim 1, wherein the illuminated body is formed of a transparent or translucent cup-shaped member having a projection formed on a lower surface of the illuminated body. The lighting device according to the above. 6. A control means for controlling the light source to have three types of light emitting diodes of red, green and blue, and to independently drive the three types of light emitting diodes to change the hue of the light source over time. The lighting device according to any one of claims 1 to 5, further comprising: