JP2014110208A - Light-emitting device for decoration - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an LED from being lightened at transportation and at storage with certainty to prevent wasted consumption of a built-in battery while detecting an ambient darkness and a shake of a container to make an LED emit light.SOLUTION: A light-emitting device for decoration comprises: a hollow container 1 having a translucent part; an LED 2 incorporated in the container 1 and irradiating the exterior of the container 1 with light; and an LED drive circuit 3 making the LED 2 emit light. The LED drive circuit 3 comprises: a battery 4 supplying a power to the LED 2; an optical sensor 5 detecting ambient brightness; a shake sensor 6 detecting a shake of the container 1; and an attitude detection circuit 8 detecting a non-lighting attitude of the container 1. In a state that the attitude detection circuit 8 detects the non-lighting attitude of the container 1, the LED drive circuit 3 turns off the LED 2. In a state that the attitude detection circuit 8 does not detect the non-lighting attitude of the container 1, and the ambient brightness detected by the optical sensor 5 is lower than a setting value, and the shake sensor 6 detects a shake of the container 1, a power is supplied to the LED 2 from the battery 4.

Description

  The present invention relates to a decorative light-emitting device that is used as an illumination at night or in a dark place, and more particularly, to a decorative light-emitting device that emits light from a built-in LED when it is floated on the water surface or installed on a tree branch or the like. .

  In recent years, lighting devices using a large number of LEDs have become widespread as illuminations for lighting up night towns, buildings, parks, and the like. In these lighting devices, a large number of LEDs are connected in a straight line with a cable, and the cable is wired on a tree branch or the like to emit light at night to achieve a beautiful appearance. Since these lighting devices are used by supplying power from a commercial power source, for example, the lights can be lit stably over a long period of time. In addition, by controlling the lighting states of a large number of LEDs with a power supply circuit, it is possible to change the lighting pattern in various ways and enjoy the lighting states. However, since this lighting device requires electrical wiring, there is a problem that it cannot be installed in a place where a power source cannot be secured. In addition, since many LEDs are connected by a cable, there is a problem that this cable deteriorates the appearance. Furthermore, since many LEDs are lit by the same power supply circuit, these LEDs can be lit with a specific lighting pattern, but individual LEDs cannot be lit with different lighting patterns.

  On the other hand, a light emitting device in which an LED is incorporated in a light-transmitting container has been developed as a light emitting device used by floating on the water surface. As shown in FIG. 1, a light emitting device described in Patent Documents 1 and 2 includes an LED 102 and an electric circuit unit 103 that emits light emitted from the LED 102 in a hollow container 101 having translucency. The LED 102 emits light in a state of floating on the water surface WL to illuminate the water surface WL. Further, the light emitting device includes a pair of terminals 105 exposed on the lower surface of the container 101, and these terminals 105 serve as lighting switches 106 for the LEDs 102. This light-emitting device includes a battery 104 as a power source, and has a structure in which a pair of terminals 105 are energized while being floated on a water surface WL, a lighting switch 106 is turned on, and an LED 102 is lit. Since this light-emitting device has a built-in battery 104, no electric wiring is required, and a large number of the light-emitting devices can be used in a state of floating on the water surface WL, so that each light-emitting device can be turned on individually.

  In this light emitting device, the pair of terminals exposed to the outside are LED lighting switches, so the switch is turned on when the pair of terminals are in contact with water, but the switch is turned on when the container is removed from the water surface. Cannot be turned on. For this reason, the switch cannot be turned on in a place where there is no water, such as a tree branch. Furthermore, in this light-emitting device, when the switch floats on the water surface and is turned on, the LEDs are kept on while the pair of terminals are in contact with water. For this reason, even when the surroundings become bright, the LED is kept lit and the built-in battery is wasted. Therefore, this light-emitting device needs to be recovered from the water surface every time it is used, and there is a problem that the work takes time and effort. In particular, when a large number of light-emitting devices are used floating in a wide area such as a pond or a river, it is extremely difficult to collect many light-emitting devices.

  As a means for solving such problems, a structure using an optical sensor as a lighting switch can be considered. For example, in the publication of the aforementioned Patent Document 1, as a modification of the light emitting device, a sensor (CdS cell) for detecting ambient brightness is incorporated, and the switch unit is energized when the sensor detects ambient darkness. And turning on the LED. According to this structure, when the surroundings become dark, this can be detected and the LEDs can be turned on. Therefore, in the state where the surroundings are bright, the built-in battery can be prevented from being wasted without being turned on. For this reason, this light-emitting device does not need to be recovered from the water surface every time it is used, and when the surroundings become dark while being left floating on the water surface for a long period of time, this is detected and the LED of the light-emitting device is turned on. be able to.

  However, when the light sensor is used as a lighting switch in this way, the LED is turned on by detecting this when the surroundings become dark even when the light emitting device is not used, for example, before or after use. There is. For this reason, in the state of collecting and storing after use, it is necessary to take out the built-in battery in order to avoid unnecessary lighting of the LED, and there is a problem that it takes time and labor for the work. In particular, many light-emitting devices of this type have a waterproof structure in order to prevent water from entering from the outside, and it takes a lot of work to open the container and take out the built-in battery. Therefore, it is extremely difficult to take out the battery from all of the many light emitting devices.

  As a means for solving the above-described problems, a structure in which a vibration sensor is used in combination with the light sensor as a light lighting switch is conceivable. A battery-operated light having such a structure is described in Patent Document 3. The battery-powered light described in the gazette of Patent Document 3 is a battery-powered light mounted on a bicycle, and is used as a headlamp for lighting a light bulb with a built-in battery during traveling at night. This battery-powered light is provided with a light sensor and a vibration sensor. When the light sensor detects that the ambient brightness is below a certain level, and the vibration sensor detects vibration during driving, It is structured to light up. For this reason, even during traveling, the light is not turned on when the surroundings are bright, and even if the surroundings are dark, the lights are not turned on when vibration is not detected, so that useless battery consumption can be prevented. Further, the battery-powered light is provided with a timer circuit that measures a certain time after the traveling is stopped, and the light is turned off after the certain time is measured by the timer circuit.

Japanese Patent No. 4669579 Utility Model Registration No. 3101365 JP-A-7-164959

  By adopting the above battery-powered light structure in a light-emitting device, only when it is detected that the ambient brightness is below a certain level by the light sensor and the vibration of the container is detected by the vibration sensor A light emitting device that emits light from an LED can be realized. In the state where the light emitting device is used while floating on the water surface, the LED is not turned on when the surrounding is bright, and when the surrounding becomes dark, the LED can be turned on by detecting vibration due to shaking of the water surface. Further, even before and after use of the light emitting device, the light emitting device can be stored without preventing the detection by the vibration sensor and lighting the LED. For this reason, it is not necessary to remove the built-in battery without using the light-emitting device, and it is possible to prevent the LED from being turned on by being placed in the state as it is, thereby preventing wasteful consumption of the battery.

  However, when this light emitting device is not in use, it is necessary to keep the vibration sensor safe so as not to detect vibration. Therefore, when transporting in a box, the vibration sensor detects vibration and lights up. There is. In particular, at the time of transportation, since it is carried in a state of being packed and enclosed in a dark place without exception, the LED is lit for a long time due to vibration during transportation, and the battery is wasted.

  The present invention has been developed to eliminate the above-described drawbacks. The main object of the present invention is to detect that the ambient brightness is below a certain level and to make the LED emit light only in a state where the shaking of the container is detected. An object of the present invention is to provide a decorative light emitting device that can reliably prevent an LED from being lit and prevent wasteful consumption of a built-in battery.

Means for Solving the Problems and Effects of the Invention

  The decorative light-emitting device of the present invention includes a hollow container 1 having a translucent part, an LED 2 that is built in the container 1 and transmits light to the outside through the translucent part of the container 1, And an LED driving circuit 3 for causing the LED 2 to emit light. The LED drive circuit 3 includes a battery 4 that supplies power to the LED 2, a light sensor 5 that detects ambient brightness, a shake sensor 6 that detects the shake of the container 1, and the container that does not light the LED 2. 1 in a state in which the non-lighting posture of the container 1 is detected by the posture detection circuit 8, the LED driving circuit 3 turns off the LED 2, and The posture detection circuit 8 does not detect the non-lighting posture of the container 1, the ambient brightness detected by the optical sensor 5 is lower than a set value, and the shake sensor 6 detects the shake of the container 1. In the state of detection, the LED drive circuit 3 supplies power from the battery 4 to the LED 2 and lights up.

  With the above configuration, the decorative light-emitting device of the present invention has a structure in which the ambient light is equal to or lower than the predetermined brightness and the LED is allowed to emit light only in a state in which the shaking of the container is detected. Is characterized in that it is possible to reliably prevent the LED from being turned on and to prevent wasteful consumption of the built-in battery. The above light emitting device includes a posture detection circuit that detects a non-lighting posture of a container that does not light the LED. When the posture detection circuit detects a non-lighting posture of the container, the LED drive circuit turns off the LED. LED drive only when the posture detection circuit does not detect the non-lighting posture of the container, the ambient brightness detected by the optical sensor is lower than the set value, and the shake sensor detects the shake of the container This is because the circuit supplies power from the battery to the LED to light it. In this light emitting device, the LED drive circuit turns off the LED when the posture detection circuit detects the non-lighting posture of the container. However, the LED is not lit. For this reason, it is possible to prevent the LED from being turned on even when the container is vibrated while being packed and transported, thereby preventing wasteful consumption of the battery.

In the decorative light emitting device of the present invention, the non-lighting posture of the container 1 detected by the posture detection circuit 8 can be set to an inclined posture in which the container 1 is inclined by 45 degrees to 135 degrees from the standing posture.
In the above light emitting device, since the posture in which the container is largely tilted, that is, the posture close to the sideways is set as the non-lighting posture, the container can be transported while effectively preventing the container from being naturally tilted into the non-lighting posture. During storage and storage, the container can be reliably held in a non-lighting position by tilting the container greatly.

In the decorative light-emitting device of the present invention, the shake sensor 6 detects a change in the posture and position of the container 1 and determines the shake of the container 1 from a signal and an energized state of the detector 31. The determination part 32 to perform can be provided. The detection unit 31 includes a moving body 35 that moves in response to shaking of the container 1, and a pair of electrodes 34 that are switched between a connected state and a non-connected state via the moving body 35. The determination unit 32 detects that the pair of electrodes 34 is switched from the connected state to the non-connected state or the pair of electrodes 34 is switched from the non-connected state to the connected state. Can determine shaking.
The above light emitting device has a feature that the structure of the shake sensor can be simplified. This is because the shake sensor includes a detection unit having a pair of electrodes and a moving body, and detects the shake from the connection state between the moving body that moves in response to the shake of the container and the pair of electrodes.

In the decorative light emitting device of the present invention, the LED driving circuit 3 can blink the LED 2 in synchronization with the contact state and non-contact state of the shake sensor 6.
The light emitting device described above has a feature that the LEDs can be blinked irregularly while simplifying the circuit configuration without providing a dedicated blinking circuit.

In the decorative light emitting device of the present invention, the shake sensor 6 is also used as the posture detection circuit 8, and the pair of electrodes 34 of the detection unit 31 are interposed via the movable body 35 in the non-lighting posture of the container 1. Can be held in a connected state or in a disconnected state.
In the above light emitting device, the shake sensor is also used as the posture detection circuit, so that the number of parts can be reduced and the manufacturing cost can be reduced while simplifying the circuit configuration.

The decorative light-emitting device of the present invention starts counting when the LED drive circuit 3 starts supplying power from the battery 4 to the LED 2, and continues to supply power to the LED 2 during counting, thereby increasing time. The first timer 63 for stopping the power supply to the LED 2 can be provided.
Since the light emitting device described above continues to supply power from the battery to the LED regardless of the detection state of the shaking sensor or the optical sensor during the counting of the first timer, the LED can be lit stably.

In the decorative light emitting device of the present invention, the LED driving circuit 3 includes a second timer 65 that starts counting when the first timer expires and holds the LED 2 in an extinguished state until the time expires. be able to.
The above light-emitting device can effectively prevent the LED drive circuit from continuously lighting the LEDs and effectively prevent the LEDs from being lit for a long time. Moreover, the lifetime of a battery can be lengthened by stopping light emission of LED for a predetermined time.

In the decorative light-emitting device of the present invention, the LED drive circuit 3 can include a lighting circuit 64 that causes the LED 2 to blink in a predetermined lighting pattern.
In the above light-emitting device, the lighting circuit blinks the LED in a predetermined lighting pattern, so that the user can enjoy the lighting pattern of the LED, and by blinking the LED, the power consumption is reduced and the battery life is extended. it can.

The decorative light-emitting device of the present invention includes the LED 2 as a multi-color LED 2A having a plurality of different emission colors, and a plurality of light-emitting elements 20 and their lighting circuits 23 incorporated in a package 21. The plurality of light emitting elements 20 can be turned on with a predetermined lighting pattern.
The above light-emitting device can illuminate various light-emitting elements having a plurality of different emission colors by the lighting circuit built in the multi-color LED in a state where the LED driving circuit supplies power from the battery to the LED. In particular, this light-emitting device can illuminate a plurality of built-in light-emitting elements in various ways by mounting one packaged LED.

In the decorative light emitting device of the present invention, the container 1 can have a watertight structure.
In the above light emitting device, since the container has a waterproof structure, even when used outdoors, it is possible to effectively prevent rainwater from entering and protect the electronic components housed in the container. In particular, this light-emitting device can prevent water from entering when it is used floating on the surface of the water. In addition, when it is installed outdoors on tree branches, eaves, etc., it can effectively penetrate water even when exposed to wind and rain. Can be prevented.

In the decorative light-emitting device of the present invention, the light-transmitting portion may include the diffusing portion 11 in which the container 1 diffuses the light emitted from the LED 2.
The above light emitting device can irradiate the light emitted from the LED to the outside while diffusing. The light-emitting device can diffuse light transmitted through the light-transmitting portion by irregularly reflecting or irregularly refracting the light emission of the LED by the diffusion portion provided in the light-transmitting portion of the container.

The decorative light-emitting device of the present invention can be a light-emitting device that is used floating on the water surface WL.
The above light-emitting device is an environment where the surroundings are dark at night or in a dark place in a state where it floats on the water surface, and supplies power from the battery to the LED only in a state where shaking of the container is detected, The LED can be ideally lit.

It is sectional drawing which shows the conventional light-emitting device. 1 is a perspective view of a decorative light emitting device according to an embodiment of the present invention; FIG. 3 is an exploded perspective view of the decorative light emitting device shown in FIG. 2. It is the disassembled perspective view which looked at the light-emitting device for decoration shown in FIG. 3 from the lower side. It is sectional drawing which shows the state which floated the light-emitting device for decoration shown in FIG. 2 on the water surface. It is a schematic block diagram which shows an example of LED. It is a block diagram which shows an example of an LED drive circuit. It is a schematic block diagram which shows an example of LED which has several different luminescent color. It is a perspective view which shows another example of a shake sensor. It is a block diagram which shows another example of an LED drive circuit. FIG. 8 is a timing chart showing a state in which the LED drive circuit shown in FIG. 7 controls a drive switch. It is a timing chart figure which shows the state which the LED drive circuit shown in FIG. 10 controls a drive switch. It is a block diagram which shows another example of an LED drive circuit. It is a timing chart figure which shows the state which the LED drive circuit shown in FIG. 13 controls a drive switch. It is a block diagram which shows another example of an LED drive circuit. It is a block diagram which shows another example of an LED drive circuit. FIG. 17 is a timing chart showing a state in which the LED drive circuit shown in FIG. 16 controls a drive switch.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment described below exemplifies a decorative light emitting device for embodying the technical idea of the present invention, and the present invention does not specify the decorative light emitting device as follows. . Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the embodiments are indicated in “Claims” and “Means for Solving the Problems”. It is appended to the members shown. However, the members shown in the claims are not limited to the members in the embodiments. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the constituent members described in the embodiments are not intended to limit the scope of the present invention only to the description unless otherwise specified. It is just an example. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation. Furthermore, in the following description, the same name and symbol indicate the same or the same members, and detailed description thereof will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing. In addition, the contents described in some examples and embodiments may be used in other examples and embodiments.

A decorative light emitting device according to an embodiment of the present invention will be described with reference to FIGS. In these drawings, FIG. 2 is a perspective view of a decorative light emitting device according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of the decorative light emitting device shown in FIG. 2, and FIG. 4 is shown in FIG. 5 is an exploded perspective view of the decorative light emitting device as seen from below, FIG. 5 is a partially enlarged sectional view showing the decorative light emitting device floating on the water surface, and FIG. 6 is a decorative light emitting device shown in FIG. FIG. 7 is a block diagram of a decorative light-emitting device according to an embodiment of the present invention.
As shown in FIG. 5, the decorative light emitting device described above is used floating on the water surface WL of a pond, river, lake, aquarium or the like, or as shown in FIG. Installed and used.

  The decorative light emitting device 100 shown in FIG. 2 to FIG. 7 includes a hollow container 1 having a translucent portion, an LED 2 that is built in the container 1, and transmits light to the outside through the container 1. An LED drive circuit 3 for emitting the LED 2 is provided.

  The container 1 is formed in a hollow shape with a resin such as plastic. The container 1 forms therein a storage space 10 for storing the LED 2 and components for realizing the LED drive circuit 3 that emits the LED 2. The container 1 shown in the figure is divided into a first case 1A and a second case 1B at the center, and the first case 1A and the second case 1B are connected in a watertight manner at the opening edge. ing. The container 1 shown in the figure is spherical, and the first case 1A and the second case 1B are hemispherical. As shown in FIG. 5, the spherical container 1 can be floated stably on the water surface WL. Further, by using a general-purpose container as the spherical container 1, it can be mass-produced at low cost. Furthermore, by making the container 1 into a spherical shape, the strength against external impacts and the like can be increased. However, the present invention does not limit the outer shape of the container to a spherical shape. The container may have various three-dimensional shapes having a storage space inside, for example, an egg shape, a star shape, a heart shape, an animal shape, an insect shape, a vehicle shape, and the like. In particular, in a decorative light-emitting device that floats on the surface of the water, the appearance of the container floating on the surface of the water can be enjoyed by making the outer shape of the container into the shape of a water bird or a ship.

  The container 1 is designed to float on the water surface. That is, the container 1 is formed in a hollow shape having a predetermined buoyancy. The buoyancy of an object floating on the water surface is equal to the weight of the volume of water immersed in the water. Therefore, the container 1 specifies the entire volume and shape in consideration of the entire weight including the components housed therein and the volume submerged in water. As shown in the figure, in the container 1 having a spherical outer shape, the shape and volume thereof are adjusted so that, for example, 20% to 50% of the whole is buoyant and floats on the water surface. The hollow container 1 having a spherical outer shape increases in volume and buoyancy by increasing its radius. Therefore, the radius of the spherical container 1 is determined in consideration of the weight of the components to be stored and the volume submerged in water. The spherical container 1 can have a radius of 1 cm to 15 cm, preferably 1.5 cm to 8 cm, and more preferably 2 cm to 5 cm. For a container having a large outer shape and increased buoyancy, a weight can be stored at the bottom of the container to balance the buoyancy.

  The container 1 has a translucent part so that the light emission of the LED 2 incorporated therein can be irradiated to the outside. The plastic container 1 is preferably transparent as a whole so as to be a translucent part. This is because the transparent container 1 can vividly emit light emitted from the built-in LED 2 to the outside. In particular, the colorless and transparent container 1 has a feature that the light emission color of the LED 2 itself can be irradiated to the outside as it is. However, the transparent container does not necessarily need to be colorless and can be colored. The container to be colored can irradiate the light emitted from the LED to the outside as transmitted light that passes through the colored portion. The container can also display various designs on the outer peripheral surface. As described above, the container formed by coloring the outer peripheral surface or displaying various designs can hide the LED and various electronic components housed in the container so that it is difficult to see from the outside. In a bright daytime environment, the design and color drawn on the surface of the container can be enjoyed as an appearance.

  The container 1 shown in FIG. 2 to FIG. 5 is divided into a hemispherical first case 1A and a second case 1B in the middle part in the vertical direction. The container 1 shown in FIGS. 2 to 5 has an upper side as a first case 1A, a lower side as a second case 1B, an upper first case 1A as transparent, and a lower second case 1B. Is translucent. As shown in FIG. 5, the light emitting device 100 causes the upper first case 1 </ b> A to be exposed from the water surface WL while being floated on the water surface WL, and emits light to the outside from here. Therefore, by making the first case 1A disposed on the upper side transparent, the light emitted from the LED can be more effectively irradiated to the outside.

  Furthermore, as shown in FIG. 6, the light emitting device 100 can be installed on a tree branch BR or under an eaves. Thus, the container 1 of the light-emitting device installed at a position higher than the line of sight can be used, for example, in an upside down state from the posture shown in FIG. The container 1 has a lower case as a first case 1A and an upper side as a second case 1B. The light emitting device 100 shown in the figure is installed in a state in which the connector 16 is fixed to the second case 1B arranged on the upper side and is suspended from a tree branch BR via a wire 17 connected to the connector 16. doing. As shown in FIG. 6, the light emitting device 100 irradiates light to the outside from the lower first case 1 </ b> A in a state where it is installed and used on a tree branch BR or the like. Therefore, by making the first case 1 </ b> A disposed on the lower side transparent, the light emitted from the LED 2 can be more effectively irradiated to the outside. However, even when installed on a tree branch or the like, the container can be used in an upright position without being turned upside down.

  As described above, the container 1 divided into the first case 1A and the second case 1B has at least the side that irradiates the light emitted from the LED 2 to the outside, in other words, the case on the side where the LED 2 is built in. It is set as the structure which has. Since the container 1 shown in FIGS. 2 to 6 houses the LED 2 on the first case 1A side, the first case 1A has a translucent portion. In the illustrated container 1, the first case 1 </ b> A is transparent, but the first case may be translucent. Furthermore, the container can also make the 2nd case which is a side in which LED is not incorporated into a case without a translucent part. A container having the second case as a case without a translucent portion can prevent the components housed in the second case from being visible from the outside. On the other hand, the second case may be a case having a translucent portion. A container having the second case as a case with a translucent part can irradiate the light emitted from the LED also to the second case side. In this light emitting device, LEDs are arranged on the first case side and the second case side, or an intermediate plate described later can be realized as a plate having a translucent portion. Therefore, the container can be transparent in both the first case and the second case, or can be translucent. The light-emitting device that irradiates the light emitted from the LED also on the second case side can irradiate light into the water, for example, in a state where it is floated on the water surface. Can be irradiated with light. Furthermore, the container does not necessarily require the entire first case or second case to be a light-transmitting part, and the case may be partially provided with a light-transmitting part.

  Furthermore, the container 1 shown in the drawing is provided with a diffusion portion 11 that diffuses the light emitted from the LED 2 on the inner peripheral surface of the first case 1A. The container 1 shown in the figure is provided with a large number of light-transmitting convex portions 11a and ridges 11b on the inner surface of the first case 1A, and the LED 2 irradiates these convex portions 11a and ridges 11b. As a structure in which the emitted light is irregularly reflected or refracted, the diffusing unit 11 that diffuses the light emitted from the LED 2 and irradiates the light to the outside is realized. The diffusion unit 11 has a structure in which reflected light and transmitted light are diffused by irregularly reflecting the light emitted from the LED 2 or transmitting it while being refracted in a complicated manner. Such protrusions 11a and protrusions 11b can be easily provided by, for example, randomly dropping or spraying a liquid or gel-like transparent resin on the inner surface of the first case 1A and then curing it. Can do. However, the diffusing portion can be configured by regularly or randomly providing a large number of recesses and grooves on the inner surface of the first case. Furthermore, the diffusing portion can be an uneven surface or a cut surface that is crystal-cut. As described above, the structure in which the diffusing portion 11 is provided on the inner surface of the first case 1A can make the outer peripheral surface of the first case 1A smooth. However, the diffusing portion can be provided on the outer peripheral surface of the first case. As described above, the container 1 including the diffusing unit 11 further makes the irradiation state of the LEDs 2 irregular so that the user can enjoy the effect of light.

  In the container 1 shown in the figure, the first case 1A and the second case 1B are connected to each other at the opening edge with a watertight structure. The container 1 shown in FIGS. 3 to 6 is connected in a watertight manner by a fitting structure in which one outer peripheral edge is fitted to the other outer peripheral edge with a circular opening edge as a connecting portion 12. The connecting portion 12 shown in the figure is provided with a ring-shaped locking projection 12a on the outer peripheral surface of the inner wall 12A inserted inside, and a ring-shaped locking on the inner peripheral surface of the outer wall 12B disposed on the outer side. Protrusions 12b are provided. The container 1 shown in the figure is provided with a stepped portion 12C at the opening edge of the first case 1A, and protrudes inside the stepped portion 12C to form an inner wall 12A along the inner peripheral surface of the first case 1A. The inner wall 12A is inserted inside the outer wall 12B, which is the opening edge of the second case 1B. As shown in the partially enlarged cross-sectional view of FIG. 5, the connecting portion 12 is in a state where the end surface of the outer wall 12B of the second case 1B is in contact with the facing surface of the step portion 12C of the first case 1A. Are connected to each other. The connecting portion 12 in the figure forms a step portion 12C and an outer wall 12B so that the boundary portion on the outer peripheral surface of the first case 1A and the second case 1B is a surface having no step. However, the connecting portion is provided with a stepped portion at the opening edge portion of the second case, protrudes to the inside of the stepped portion to form an inner wall, and the opening edge portion of the first case serves as the outer wall, and the inner wall. And the outer wall can be connected to each other. The first case 1A and the second case 1B are connected at the connecting portion 12 by fitting the locking ridges 12a of the inner wall 12A and the locking ridges 12b of the outer wall 12B to each other. Is done. This structure can be connected in a watertight manner while being connected so as not to come off with the simplest structure. However, the first case and the second case can be screwed together without being connected by a fitting structure. In this structure, a male screw is provided on the outer peripheral surface of the outer peripheral wall inserted on the inner side, and a female screw is provided on the inner peripheral surface of the outer peripheral wall disposed on the outer side, and the two are screwed together. Furthermore, a watertight structure can be obtained more reliably by sandwiching a ring-shaped packing at the connecting portion between the first case and the second case.

  As described above, the container 1 that connects the first case 1A and the second case 1B to each other by fitting or screwing in the connecting portion 12 is divided into two parts, the first case 1A and the second case 1B. Can be detachably connected at the opening edge of each other. As described above, the structure in which the first case 1A and the second case 1B are detachably connected can be replaced with the battery 4 housed in the structure by disassembling the connection part 12. However, the light-emitting device can be prevented from being detached by bonding the connecting portion in a type in which a built-in battery is not replaced, that is, a single-use type light-emitting device.

  Further, the light emitting device 100 shown in FIGS. 2 to 5 has an intermediate plate 9 built in the container 1. The intermediate plate 9 is a circular plastic plate and is disposed in a horizontal posture at the center of the container 1. In the container 1 shown in the figure, a circular intermediate plate 9 is disposed in a horizontal posture in the vicinity of the opening of the second case 1B. In FIG. 5, the circular intermediate plate 9 has the outer peripheral edge on the lower surface side in contact with the inner surface of the second case 1B, and is inserted into the opening edge of the second case 1B at the outer peripheral edge portion on the upper surface side. The end surface of the inner peripheral wall 12A of the first case 1A is in contact with the first case 1A. That is, the intermediate plate 9 is fixed to the central portion of the container 1 in a horizontal posture while being sandwiched between the end surface of the inner peripheral wall 12A of the first case 1A and the inner surface of the second case 1B. In this structure, the intermediate plate 9 can be fixed at a fixed position in the container 1 using the connecting portion 12 of the container 1 without providing a dedicated member for arranging the intermediate plate 9 at a fixed position. However, the intermediate plate can be disposed at a fixed position by providing a member such as a positioning rib or a locking hook on the inner surface of the second case.

  The intermediate plate 9 shown in FIGS. 3 and 5 has a substrate 7 disposed at the center. The intermediate plate 9 shown in the figure has a circular through hole 9a at the center, and the circular substrate 7 is disposed in the through hole 9a. This substrate 7 has electronic components mounted thereon. A substrate 7 shown in the figure is mounted with an LED 2 and an electronic component that realizes the LED drive circuit 3 that causes the LED 2 to emit light. The intermediate plate 9 shown in FIGS. 3 and 5 exposes the substrate 7 on the upper surface side, and can emit light emitted from the LEDs 2 arranged on the substrate 7 upward. The intermediate plate 9, which is a plastic plate, has a light reflecting surface 13 as a surface so that the light emitted from the LED 2 can be efficiently emitted to the outside. As such a light reflecting surface 13, the surface of the plastic plate is mirror-finished or glossy. The intermediate plate 9 can color the surface white or glossy color and reflect the light emission of the LED 2 more effectively.

  Further, the intermediate plate 9 shown in FIGS. 3 and 5 has a battery case 14 fixed to the lower surface side. The battery case 14 houses a battery 4 serving as a power source for supplying power to the LED 2. As described above, the structure in which the battery case 14 is provided on the lower surface of the intermediate plate 9 and the battery 4 is arranged allows the center of gravity of the light-emitting device to be arranged in the lower portion. Therefore, as shown in FIG. And can be suspended. However, the light emitting device does not necessarily have to fix the battery case to the lower surface of the intermediate plate, and can be fixed to the inner surface of the second case. A predetermined type of battery 4 is accommodated in the battery case 14. The battery case 14 connects the output of the stored battery 4 to the substrate 7 via the lead wire 15.

  LED2 is being fixed to the upper surface side of the board | substrate 7, and is arrange | positioned so that light may be irradiated toward the upper direction of the container 1. FIG. The LED 2 shown in FIGS. 2 to 5 uses a bullet-type LED in which a light emitting element is enclosed in a transparent resin package 21. The bullet-type LED is arranged at a predetermined position by connecting a plurality of terminals 22 protruding from the package 21 to the substrate 7. However, a chip-type surface-mounted LED can also be used as the LED. The surface mount type LED is directly fixed to the substrate and arranged at a predetermined position. The LED 2 is driven by the LED driving circuit 3 mounted on the substrate 7 to emit light, and irradiates light to the outside. The LED 2 can be of a single emission color type, or can be a type having a plurality of different emission colors, for example, a multi-color (full color) type.

  The LED 2 having a single emission color can be a single emission color or a plurality of LEDs can be arranged. For the LED 2 having a plurality of different emission colors, for example, as shown in FIG. 8, a multi-color LED 2A in which a plurality of light emitting elements 20 and their lighting circuits 23 are built in a package 21 can be conveniently used. The multi-color LED 2A includes three light emitting elements 20 of red, green, and blue, and a driving IC 23A that is a lighting circuit 23 that lights these light emitting elements 20 in a predetermined lighting pattern. The LED 2 has two terminals 22 protruding from the package 21, and in a state where power is supplied to the terminals 22, the lighting circuit 23 lights a plurality of light emitting elements 20 with a predetermined lighting pattern. Therefore, a plurality of light emitting elements can be lit in various ways by mounting a single packaged LED without mounting a plurality of LEDs and their lighting circuits on the substrate. In particular, the lighting circuit 23 can reduce power consumption by causing the plurality of light emitting elements 20 to emit light in a blinking state without being continuously lit.

  However, in the light emitting device, as shown in FIG. 15, one or a plurality of LEDs 2 can be mounted and a lighting circuit 64 for controlling the light emission of these LEDs 2 can be provided in the LED driving circuit 3. The lighting circuit 64 can produce various types of light emission by lighting one or more LEDs 2 in various lighting patterns. The lighting circuit 64 can also reduce power consumption by emitting light in a state where one or a plurality of LEDs 2 are blinked without being continuously lit. Further, even in a light emitting device including a full color type LED, a lighting circuit for controlling the light emission color and lighting pattern of the LED can be provided in the LED driving circuit.

  As shown in FIG. 7, the LED drive circuit 3 turns on the battery 4 that supplies power to the LED 2, the optical sensor 5 that detects ambient brightness, the shake sensor 6 that detects the shake of the container 1, and the LED 2. And a posture detection circuit 8 that detects a non-lighting posture of the container 1 that is not allowed to be moved. The LED drive circuit 3 turns off the LED 2 in a state where the posture detection circuit 8 detects the non-lighting posture of the container 1, the posture detection circuit 8 does not detect the non-lighting posture of the container 1, and the optical sensor 5 When the ambient brightness to be detected is lower than the set value and the shake sensor 6 detects the shake of the container 1, power is supplied from the battery 4 to the LED 2 to light the LED 2. As shown in FIG. 5, the battery 4 is housed in a battery case 14 disposed on the lower surface side of the intermediate plate 9. Electronic components that realize the optical sensor 5, the shake sensor 6, and the attitude detection circuit 8 are mounted on the upper surface side of the substrate 7.

  The battery 4 supplies power to the LED 2 when the LED drive circuit 3 is in an on state. The battery 4 shown in FIG. 4 is an AAA type battery, and two batteries 4 are connected in series. However, batteries other than the AAA type can also be used. As the battery, for example, an AA type to AA type battery, a square battery, a button type battery, or the like can be used. However, since the size and weight of the battery vary depending on the type, the battery to be used is changed depending on the size of the container for storing the battery and the buoyancy of the container. For example, a battery built in a container capable of increasing buoyancy can be large and heavy, while a battery housed in a container having small buoyancy is small and light. The container 1 shown in FIG. 4 and FIG. 5 accommodates two AA type or AA type batteries 4 so that 20% to 50% of the whole container is submerged in water and floats on the water surface. . The battery 4 can be a secondary battery that can be used repeatedly or a primary battery that cannot be used repeatedly. The secondary battery can be conveniently reused by taking it out of the container 1 and charging it when the battery 4 runs out.

  The optical sensor 5 is an element that senses external brightness. As shown in FIG. 5, the optical sensor 5 is fixed to the upper surface side of the substrate 7 and disposed inside the first case 1A so that the external brightness can be sensed. As shown in the drawing, the optical sensor 5 is arranged so that the light-sensitive surface 5a faces outward. The optical sensor 5 disposed here detects the brightness of the surroundings by external light that passes through the first case 1A and enters the container. Although not shown, the optical sensor 5 includes a light detection resistor whose resistance value changes depending on brightness. When the amount of light hitting the light sensing surface 5a decreases, the resistance value of the light detection resistor changes and the surroundings become dark. It detects that it became. For example, the optical sensor 5 can detect that the surrounding has become dark by dividing and detecting the voltage applied to the light detection resistor and determining whether the divided voltage is larger or smaller than the set voltage. For example, when the ambient brightness to be detected becomes lower than a set value, the optical sensor 5 outputs an ON signal as a “darkness detection signal”.

  The shaking sensor 6 is a sensor that senses shaking of the light emitting device, and determines that the container 1 is shaking by detecting a change in the posture or position of the container 1. The shake sensor 6 shown in FIG. 7 includes a detection unit 31 that detects a change in the posture and position of the container 1 and a determination unit 32 that determines the shake of the container 1 based on a signal and an energized state of the detection unit 31. . The detection unit 31 can use a sensor that senses this when the container 1 is tilted at a predetermined angle, moved up and down, or moved back and forth and left and right. As such a sensor, various sensors such as an inclination sensor, a vibration sensor, and an acceleration sensor can be used. In the state in which the detection unit 31 detects a change in the posture or position of the container 1, the shake sensor 6 determines whether the container 1 has shaken from the signal of the detection unit 31 or the energized state. ”To output an ON signal. The determination part 32 can also be set to output an ON signal according to the degree of shaking of the container 1, for example, by giving clearance to the shaking determination of the container 1.

  The detection unit 31 of the shake sensor 6 shown in FIGS. 2 to 6 houses a pair of electrodes 34 and a movable body 35 having conductivity in a non-conductive cylindrical body 33 that is sealed in a hollow shape. The detection unit 31 is energized when the cylindrical body 33 is tilted, the internal moving body 35 is moved by gravity, and the pair of electrodes 34 and the moving body 35 are in contact with each other. Therefore, it is possible to detect the shaking of the container 1 by arranging the cylindrical body 33 in a horizontal posture and detecting the energized state of the detection unit 31 using the movement of the moving body 35 that moves in the cylindrical body 33. it can. As such a moving body 35, a conductive fluid, for example, mercury can be used. However, a low-resistance fluid other than mercury can be used as the conductive fluid. Furthermore, a metal sphere can also be used for the conductive moving body.

  The determination unit 32 of the shake sensor 6 determines, for example, that a swing has occurred when the moving body 35 comes into contact with the pair of non-energized electrodes 34 and enters the energized state, and the pair of electrodes in the energized state. When the moving body 35 moves away from 34 and enters a non-energized state, it is determined that shaking has occurred. That is, in the pair of electrodes 34, the determination unit 32 determines that no shaking has occurred in a state where the energized state or the non-energized state continues, and determines that shaking has occurred in a state where the energized state changes. Can do. However, the determination unit can also determine that shaking has occurred in a state where the pair of electrodes repeats the energized state and the non-energized state within a predetermined time.

  The detection unit 31 can maximize the sensitivity of shake detection by setting the cylindrical body 33 in a horizontal posture with respect to the installation state of the container 1. This is because the movable body 35 moves in a state where the horizontal cylindrical body 33 is slightly inclined. In addition, the detection unit 31 can reduce the sensitivity of shake detection by arranging the cylindrical body 33 so as to be slightly inclined from the horizontal posture with respect to the installation state of the container 1, and the clearance can be used for the shake detection. Can be given.

  Furthermore, this detection part 31 can make the sensitivity of a shake detection high by connecting the cylinder 33 to the board | substrate 7 via an elastic body. As such an elastic body, a coil spring, an elastic metal wire, an elastic metal plate, rubber or the like can be used. The detection unit 31 shown in FIGS. 2 to 6 includes a metal wire 36 that connects the pair of electrodes 34 disposed in the cylindrical body 33 to the substrate 7. In the detection unit 31, the metal wire 36 that connects the cylindrical body 33 and the substrate 7 can be an elastic metal wire that is elastically deformed with respect to the shaking of the container 1. Further, although not shown, the detection unit can connect the cylindrical body to a substrate, an intermediate plate, or a fixed portion fixed to these via an elastic body such as a coil spring or rubber. For example, the detection unit connects the cylindrical electrode and the substrate with a flexible lead wire or the like.

  Furthermore, the detection unit 31 may have a structure shown in FIG. The detection unit 31 illustrated in FIG. 9 includes a contact ring 43 having electrical conductivity, a swinging body 44 disposed inside the contact ring 43, and a support body 45 that supports the swinging body 44. The contact ring 43 in the figure is a metal ring formed by forming a metal wire into a circle, and one end is fixed to the substrate 7. The oscillating body 44 is a metal rod arranged in a vertical posture so as to be able to oscillate inside the circular contact ring 43, and the upper end is connected to the distal end of the support body 45 and the lower end is a free end. The support body 45 has a rear end fixed to the substrate 7, and an upper end of a metal rod that is a swing body 44 is swingably connected to the front end. The support body 45 shown in the figure is connected to the swinging body 44 via an elastic body 46 so that the swinging body 44 can swing with high sensitivity to the swinging of the container 1 swinging back and forth, right and left, and up and down. The support body 45 shown in the figure is composed of a fixed arm 47 fixed to the substrate 7 and an elastic body 46 fixed to the upper end portion of the fixed arm 47, and a metal rod as a rocking body 44 at the tip of the elastic body 46. The top ends of the are connected. The illustrated elastic body 46 is a coil spring.

  The detection unit 31 having this structure also connects the contact ring 43 and the support body 45 to the substrate 7 as a pair of electrodes 34 and 34, and uses the rocking body 44 as a moving body 35, and the pair of electrodes 34 and 34 and the moving body 35. The shaking state of the container 1 is determined by changing the energization state between the pair of electrodes 34 depending on the contact state between the container 1 and the electrode 34. The determination unit 32 of the vibration sensor 6 also determines that the vibration has occurred when the contact ring 43 in the non-energized state and the rocking body 44 come into contact with each other and enters the energized state. It can be determined that shaking has occurred when 44 is separated and becomes non-energized. That is, the determination unit 32 determines that the contact ring 43 and the swinging body 44 are not shaken in a state where the contact state and the non-contact state are continued, and the shake occurs when the energization state is changed. Can be determined.

  The detection unit 31 shown in FIG. 9 has the contact ring 43 in a horizontal posture with respect to the installation state of the container 1, and the swinging body 44 is arranged in a vertical posture at the center of the contact ring 43 to shake the container 1. Is detected. The detection unit 31 can adjust the sensitivity of shake detection by variously changing the inner shape of the contact ring 43, the weight and shape (for example, length and thickness) of the swing body 44, the elastic coefficient of the elastic body 46, and the like. Furthermore, as shown by a chain line in FIG. 9, the detection unit can be easily rocked by providing a weight 48 at the lower end of the metal rod that is the rocking body 44.

  However, the present invention does not specify the detection unit of the shake sensor as the above structure. Although the shake sensor is not shown, any other structure capable of detecting the shake of the container can be used.

  The posture detection circuit 8 is a circuit that detects whether or not the posture of the container 1 is in a non-lighting posture that does not light the LED 2 set in advance, and detects whether the container 1 is in a non-lighting posture by detecting the inclination of the container 1. Is detected. The posture detection circuit 8 includes a detection unit 51 that detects the inclination of the container 1 and a determination unit 52 that determines whether or not the container 1 is in a non-lighting posture based on a signal from the detection unit 51 or an energized state. .

  The detection unit 51 is an inclination sensor, and a sensor capable of detecting this in a state where the container 1 is inclined at a predetermined angle or more from the standard posture can be used. Here, the standard posture of the container 1 is a posture in which the container 1 is installed in the usage state of the light emitting device. As shown in FIG. 5, in the light emitting device used floating on the water surface WL, the LED 2 is As shown in FIG. 6, in the light emitting device that is suspended from the tree branch BR or the like and used in an upside down orientation as shown in FIG. 6, the LED 2 is in the inverted orientation in which the LED 2 faces downward. When the container 1 is in a state where the container 1 is inclined at a predetermined angle or more from the standard posture, the detection unit 51 that is an inclination sensor outputs a signal indicating this, or changes its energization state so that the container 1 is at a predetermined angle. The fact that it has been tilted is output to the determination unit 52.

  The posture detection circuit 8 can detect, for example, a state where the container 1 is tilted 45 degrees or more, preferably 60 degrees or more from the standard posture as a non-lighting posture. As described above, the light emitting device may be used in a posture in which the container 1 is turned upside down. Therefore, the non-lighting posture of the container 1 can be a posture inclined from 45 degrees to 135 degrees, preferably 60 degrees to 120 degrees from the standard posture. The posture detection circuit 8 that makes the inclination angle determined as the non-lighting posture in the above range is the posture in which the container 1 is largely tilted, that is, the posture close to lying down is the non-lighting posture. In the transportation and storage, the container can be securely held in the non-lighting posture by tilting the container greatly during transportation and storage. However, the posture detection circuit does not specify the non-lighting posture of the container 1 in the above tilt range.

  When the detection unit 51 detects that the container 1 is inclined by a predetermined angle or more, the determination unit 52 determines that the container 1 is in the non-lighting posture. However, the determination unit can also determine that the container is in a non-lighting posture in a state where the state where the container is tilted by a predetermined angle or more continues for a set time or longer. For example, the light emitting device is not held in an inclined posture from a standing posture in a state where it is used floating on the water surface WL as shown in FIG. In the case where the container 1 is tilted due to shaking of the water surface WL, wind, or the like, the original posture is quickly restored without exception. Therefore, the determination unit 52 determines that the container 1 is in the non-lighting posture by detecting that the container 1 is held in a tilted state for a set time or more and determines that the container 1 is in the non-lighting posture. it can. In the determination unit, the set time for determining the non-lighting posture of the container 1 can be, for example, 0.5 seconds or more, preferably 1 second or more. This determination method can effectively prevent erroneous determination due to noise, impact, etc., and reliably detect the non-lighting posture of the container. When the determination unit 52 determines that the container 1 is in the non-lighting posture, the determination unit 52 outputs an off signal as a “non-lighting signal” and turns off the LED 2.

  The above-described shake sensor 6 can also be used for such a posture detection circuit 8. For example, in the detection unit 31 of the shake sensor 6 shown in FIGS. 2 to 5, when the container 1 is tilted so that the pair of electrodes 34 in the cylindrical body 33 are positioned below or above, the movable body 35 is tilted. Is held in contact with the pair of electrodes 34 or in a non-contact state. Therefore, the posture detection circuit 8 including the shake sensor 6 including the detection unit 31 detects that the pair of electrodes 34 is held in the energized state or held in the non-energized state, thereby A non-lighting posture can be detected. In the light emitting device including the detection unit 31 (51) having this structure, the movable body 35 is held in contact with the pair of electrodes 34, or the posture in which the movable body 35 is held in the non-contact state is a non-lighting posture.

  Further, in the detection unit 31 of the shake sensor 6 shown in FIG. 9, when the container 1 is tilted so that the swing body 44 is in contact with the contact ring 43, the movable body 35 that is the swing body 44 is in contact with the contact ring 43. The electrode 34 is held in contact. Therefore, the posture detection circuit 8 including the shake sensor 6 including the detection unit 31 detects that the moving body 35 that is the swing body 44 and the electrode 34 that is the contact ring 43 are held in the energized state. The non-lighting posture of the container 1 can be detected. In the light emitting device including the detection unit 31 (51) having this structure, the posture in which the rocking body 44 is held in contact with the contact ring 43 is the non-lighting posture.

  The shake sensor 6 and the posture detection circuit 8 provided with the above-described detection unit 31 (51) have the non-lighting posture of the container 1 in a state where the pair of electrodes 34 is held by the energized body or kept in a non-energized state. In the state where the energization state of the pair of electrodes 34 is detected, the shaking of the container 1 is detected. As described above, the structure in which the shake sensor 6 is also used as the posture detection circuit 8 can reduce the number of components and the manufacturing cost while simplifying the circuit configuration of the entire LED drive circuit 3. However, as shown in FIG. 10, the LED drive circuit may include an attitude detection circuit 8 as a separate circuit from the shake sensor 6.

  The above LED drive circuit 3 turns off the LED 2 in a state where the posture detection circuit 8 detects the non-lighting posture of the container 1, the posture detection circuit 8 does not detect the non-lighting posture of the container 1, and the optical sensor 5. In a state where the ambient brightness detected by is lower than the set value and the shake sensor 6 detects the shake of the container 1, power is supplied from the battery 4 to the LED 2 to light the LED 2. In the LED drive circuit 3, when the attitude detection circuit 8 does not detect the non-lighting attitude of the container 1, the ambient brightness detected by the optical sensor 5 is lower than the set value, and the shake sensor 6 is Only in the state of detecting the shaking of the battery, power is supplied from the battery 4 to the LED 2. For this reason, in a state where any one of the ambient brightness and the shaking of the container 1 is not satisfied, power is not supplied from the battery 4 to the LED 2, and the LE 2D can be ideally lit. In the state where the container 1 is in the non-lighting posture, even if the ambient brightness detected by the light sensor 5 is lower than the set value and the shake sensor 6 detects the shake of the container 1, Is not powered. For this reason, this light-emitting device can prevent wasteful consumption of the battery 4 by blocking the light emission of the LED 2 during transportation and storage by packing the container 1 in a non-lighting posture.

  The LED drive circuit 3 shown in FIG. 7 includes a drive switch 61 that controls power supply from the battery 4 to the LED 2. In the illustrated light emitting device, the battery 4 and the LED 2 are connected in series, and a drive switch 61 is connected in series between the battery 4 and the LED 2. As the drive switch 61, for example, a semiconductor switching element can be used. The drive switch 61 is switched to the off state when the posture detection circuit 8 detects the non-lighting posture of the container 1, stops the supply of power from the battery 4 to the LED 2, and turns off the LED 2. Further, the drive switch 61 does not detect the non-lighting posture of the container 1 by the posture detection circuit 8, the ambient brightness detected by the optical sensor 5 is lower than the set value, and the shake sensor 6 is not in the container 1. The switch is turned on only in the state of detecting the shaking of the battery, power is supplied from the battery 4 to the LED 2, and the LED 2 is turned on.

  The LED drive circuit 3 shown in FIGS. 7 and 10 includes an input circuit 62 that controls on / off of the drive switch 61 on the input side of the drive switch 61. The input circuit 62 receives signals from the optical sensor 5, the vibration sensor 6, and the attitude detection circuit 8 on the input side, and controls on / off of the drive switch 61 based on these input signals. The state in which the input circuit 62 controls the drive switch 61 based on the signals from the optical sensor 5, the vibration sensor 6, and the attitude detection circuit 8 is shown in the timing charts of FIGS. Here, FIG. 11 shows the control state of the input circuit 62 in the LED drive circuit 3 shown in FIG. 7, which uses the shake sensor 6 also as the posture detection circuit 8, and FIG. 2 shows the control state of the input circuit 62 in the LED drive circuit 3 having the posture detection circuit 8 which is a separate circuit from the shake sensor 6.

  As shown in FIGS. 11 and 12, the input circuit 62 assumes that the container 1 is in the non-lighting posture in the state where the off signal is input as the “non-lighting signal” from the posture detection circuit 8, and the optical sensor 5 and the shaking are detected. Regardless of the input signal of the sensor 6, the drive switch 61 is switched off. The input circuit 62 receives an ON signal as a “darkness detection signal” from the optical sensor 5 and is turned ON as a “swing detection signal” from the shake sensor 6 in a state where no OFF signal is input from the posture detection circuit 8. Only when the signal is input, the drive switch 61 is turned on.

  Here, in the LED drive circuit 3 including the shake sensor 6 having the detection unit 31 shown in FIGS. 2 to 6 and FIG. 9, as shown in FIGS. 11 and 12, the contact state and the non-contact state of the detection unit 31. The LED drive circuit 3 can blink the LED 2 by controlling the drive switch 61 to be turned on and off in synchronization with the above. This LED drive circuit 3 is not provided with a dedicated flashing circuit, and while the circuit configuration is simplified, the drive switch 61 is turned on and off in real time in a state of reacting to the shaking of the container 1 caused by a natural phenomenon, and the LED 2 is turned off. The rule has a feature that can flash.

  Further, as described above, in the configuration in which the determination unit of the posture detection circuit determines that the container is in the non-lighting posture in a state where the state where the container is tilted by a predetermined angle or more continues for a set time or longer, As indicated by the chain line 11, the off signal is not output in a state where the container is not tilted for longer than the set time, and the off signal is output only in a state where the tilted state is continued for the set time or longer. be able to.

  Furthermore, the LED drive circuit 3 shown in FIG. 13 starts counting when power supply from the battery 4 to the LED 2 is started. During the counting, the power supply to the LED 2 is continued and the time is up to supply power to the LED 2. A first timer 63 that stops is provided. The LED drive circuit 3 shown in the figure includes a first timer 63 in an input circuit 62 that controls the drive switch 61 to be turned on and off. As shown in FIG. 14, the input circuit 62 receives an ON signal from the optical sensor 5 and an ON signal from the shake sensor 6 in a state where no OFF signal is input from the posture detection circuit 8. Then, the drive switch 61 is switched on to start supplying power from the battery 4 to the LED 2, and at the same time, the first timer 63 starts counting. During the count of the first timer 63, the input circuit 62 holds the drive switch 61 in the on state regardless of the input signals from the optical sensor 5, the shake sensor 6, and the attitude detection circuit 8, and supplies the LED 2 to the LED 2. Continue power supply. Further, when the first timer 63 expires, the drive switch 61 is turned off to stop the power supply to the LED 2. Since this light-emitting device continues to supply power from the battery 4 to the LED 2 regardless of the detection state of the shake sensor 6 or the optical sensor 5 during the counting of the first timer 63, the LED 2 can be lit stably. There is.

  As described above, the LED driving circuit 3 including the first timer 63 continues to supply power from the battery 4 to the LED 2 during the counting of the first timer 63, and therefore causes the LED 2 to emit light continuously. You can also. Furthermore, the LED drive circuit 3 including the first timer 63 may include a lighting circuit 64 that controls the lighting state of the LED 2 as shown in FIG. In the illustrated light emitting device, a lighting circuit 64 is connected in series between the battery 4 and the drive switch 61 connected in series. The LED drive circuit 3 can supply power from the battery 4 to the lighting circuit 64 in the ON state of the drive switch 61, and can control the LED 2 by the lighting circuit 64 to cause the LED 2 to blink in a predetermined lighting pattern. In this light emitting device, the user can enjoy the lighting pattern of the LED 2, and blinking the LED 2 can reduce power consumption and extend the life of the battery 4.

  Furthermore, in the light emitting device provided with the first timer 63 in the LED driving circuit 3, the multi-color LED 2A having a plurality of different emission colors shown in FIG. 8 can be conveniently used. In the multi-color LED 2 </ b> A, the lighting circuit 23 lights a plurality of light emitting elements 20 with a predetermined lighting pattern in a state where power is supplied to the terminal 22. Therefore, the LED 2 can be lit in a variety of different emission colors while the LED drive circuit 3 is not provided with a lighting circuit and the power is continuously supplied from the battery 4 to the LED 2. In particular, by making the plurality of light emitting elements 20 blink, the power consumption can be reduced and the life of the battery 4 can be extended.

  Further, in addition to the first timer 63 described above, the LED drive circuit 3 shown in FIG. 16 starts counting when the first timer 63 times out, and holds the LED 2 in the off state until the time is up. Timer 65 is provided. The LED drive circuit 3 shown in the figure includes a first timer 63 and a second timer 65 in an input circuit 62 that controls the drive switch 61 to be turned on and off. As shown in FIG. 17, the input circuit 62 receives an ON signal from the optical sensor 5 and an ON signal from the shake sensor 6 in a state where no OFF signal is input from the posture detection circuit 8. The drive switch 61 is turned on to start supplying power from the battery 4 to the LED 2, and at the same time, the first timer 63 starts counting. During the count of the first timer 63, the input circuit 62 holds the drive switch 61 in the on state regardless of the input signals from the optical sensor 5, the shake sensor 6, and the attitude detection circuit 8, and supplies the LED 2 to the LED 2. Continue power supply. Further, when the first timer 63 times out, the second timer 65 starts counting. This input circuit 62 holds the drive switch 61 in the OFF state regardless of the input signals from the optical sensor 5, the shake sensor 6, and the attitude detection circuit 8 until the second timer 65 counts up, Stop power supply. When the second timer 65 counts up, the power supply from the battery 4 to the LED 2 is controlled based on the input signals from the optical sensor 5, the shake sensor 6, and the attitude detection circuit 8. Since this LED drive circuit 3 forcibly stops the power supply to the LED 2 by the second timer 65 after the power supply to the LED 2 is continuously continued by the first timer 63, the LED drive circuit 3 continues to the LED 2. Thus, it is possible to effectively prevent the LED 2 from being continuously lit or blinking for a long time by preventing the power from being continuously supplied. Since the light emitting device forcibly stops the light emission of the LED 2 for a predetermined time, the life of the battery 4 can be further extended.

The decorative light emitting device of the present invention is used as follows.
[When using on the water surface]
As shown in FIG. 5, the container 1 is floated on the water surface WL. In this state, the container 1 swings while floating on the water surface WL in a standing posture. For this reason, the non-lighting posture of the container 1 is not continuously detected in the posture detection circuit 8. In this light emitting device, the light sensor 5 detects this when the surroundings become dark, and the shake sensor 6 detects this when the container 1 floating on the water surface WL is shaken by the water surface shake or wind. Therefore, in the light emitting device floating on the water surface, when the shake of the container 1 is detected in an environment where the surroundings are dark, such as at night or in a dark place, power is supplied from the battery 4 to the LED 2 and the LED 2 is turned on.

[When installing on a tree branch or eaves, etc.]
As shown in FIG. 6, the container 1 is installed on a tree branch BR, eaves, or the like. The light emitting device shown in the figure shows a state where the container is installed upside down. In this state, the container 1 is held in the inverted posture inverted from the standing posture. For this reason, the non-lighting posture of the container 1 is not continuously detected in the posture detection circuit 8. In this light emitting device, when the surroundings become dark, the optical sensor 5 detects this, and when the container 1 connected to the tree branch BR or the like is shaken by wind or the like, the shaking sensor 6 detects this. Therefore, in a light emitting device installed on a tree branch or the like, when a shake of the container 1 is detected in an environment where the surroundings are dark at night or in a dark place, power is supplied from the battery 4 to the LED 2 and the LED 2 is turned on. To do.

[When transporting or storing the light emitting device in a box]
The container 1 is packed in a state where it is in a non-lighting posture inclined at a predetermined angle or more from the standing posture shown in FIG. The container 1 is packed in a posture inclined 45 to 135 degrees from the standing posture, and preferably in a sideways posture inclined 90 degrees from the standing posture. When the container 1 is packed in a non-lighting posture, the posture detection circuit 8 detects the non-lighting posture of the container 1 and stops the power supply to the LED 2. In the state where the container 1 is held in the non-lighting posture, the power supply from the battery 4 to the LED 2 is continuously stopped. For this reason, even if the light emitting device is packed and transported in a dark place and the container 1 is shaken by vibration, the LED 2 is not supplied with power, and the built-in battery 4 is wasted. Is surely prevented from being consumed.

  In the above embodiment, as a decorative light emitting device of the present invention, it is used floating on the water surface or used on a tree branch or eaves, etc., but the light emitting device is not limited to a natural phenomenon, It can also be used for a member or application that reacts in contact with a person. For example, the decorative light-emitting device can be installed on a member that moves in contact with a person when the person moves, such as a door or a goodwill. This light-emitting device is also installed in a position where the container is not in a non-lighting position, so that power is supplied from the battery to the LED when a shake of the container is detected in an environment where the surroundings are dark, such as at night or in a dark place. LED lights up.

  The light-emitting device for decoration of the present invention is used as an illumination that emits an LED at night or in a dark place by being floated on the water surface or installed on a tree branch or the like.

DESCRIPTION OF SYMBOLS 100 ... Light-emitting device 1 ... Container 1A ... 1st case
1B ... Second case 2 ... LED 2A ... Multi-color LED
DESCRIPTION OF SYMBOLS 3 ... LED drive part 4 ... Battery 5 ... Optical sensor 5a ... Photosensitive surface 6 ... Shaking sensor 7 ... Substrate 8 ... Attitude detection circuit 9 ... Intermediate plate 9a ... Through-hole 10 ... Storage space 11 ... Diffusion part 11a ... Convex part
11b ... ridge 12 ... connecting part 12A ... inner peripheral wall
12a ... Locking ridge
12B ... Inner wall
12b ... Locking ridge 13 ... Light reflecting surface 14 ... Battery case 15 ... Lead wire 16 ... Connector 17 ... Wire rod 20 ... Light emitting element 21 ... Package 22 ... Terminal 23 ... Lighting circuit 23A ... Driving IC
DESCRIPTION OF SYMBOLS 31 ... Detection part 32 ... Determination part 33 ... Cylindrical body 34 ... Electrode 35 ... Moving body 36 ... Metal wire 43 ... Contact ring 44 ... Oscillation body 45 ... Supporting body 46 ... Elastic body 47 ... Fixed arm 48 ... Weight 51 ... Detection part 52 ... Determination unit 61 ... Drive switch 62 ... Input circuit 63 ... First timer 64 ... Lighting circuit 65 ... Second timer 101 ... Container 102 ... LED
DESCRIPTION OF SYMBOLS 103 ... Electric circuit part 104 ... Battery 105 ... Terminal 106 ... Lighting switch WL ... Water surface BR ... Tree branch

Claims (12)

A hollow container (1) having a translucent part;
LED (2) that is built in the container (1) and radiates light to the outside through the light transmitting part of the container (1);
A decorative light emitting device comprising an LED drive circuit (3) for emitting the LED (2),
The LED drive circuit (3)
A battery (4) for supplying power to the LED (2);
An optical sensor (5) for detecting ambient brightness;
A shaking sensor (6) for detecting the shaking of the container (1);
A posture detection circuit (8) for detecting a non-lighting posture of the container (1) that does not light the LED (2);
With
In the state where the posture detection circuit (8) detects the non-lighting posture of the container (1), the LED drive circuit (3) turns off the LED (2),
The posture detection circuit (8) does not detect the non-lighting posture of the container (1),
And the ambient brightness detected by the light sensor (5) is lower than a set value,
Further, in a state where the shaking sensor (6) detects the shaking of the container (1), the LED drive circuit (3) supplies power from the battery (4) to the LED (2) and lights up. A decorative light-emitting device. The decorative light emitting device according to claim 1,
The non-lighting posture of the container (1) detected by the posture detection circuit (8) is an inclined posture in which the container (1) is inclined 45 degrees to 135 degrees from the standing posture. Light emitting device. A decorative light emitting device according to claim 1 or 2,
The shake sensor (6) is a detection unit (31) that detects a change in the posture or position of the container (1), and determines the shake of the container (1) from a signal or an energized state of the detection unit (31). And a determination unit (32) to perform,
The detection unit (31) includes a moving body (35) that moves in response to shaking of the container (1), and a pair of electrodes that are switched between a connected state and a non-connected state via the moving body (35) ( 34) and
By detecting that the pair of electrodes (34) is switched from the connected state to the disconnected state or the pair of electrodes (34) is switched from the disconnected state to the connected state by the movement of the moving body (35). The decorative light-emitting device, wherein the determination unit (32) determines the shaking of the container (1). The decorative light-emitting device according to claim 3,
A decorative light emitting device, wherein the LED drive circuit (3) blinks the LED (2) in synchronization with a contact state and a non-contact state of the shake sensor (6). The decorative light-emitting device according to claim 3,
The shake sensor (6) is also used as the posture detection circuit (8),
In the non-lighting posture of the container (1), the pair of electrodes (34) of the detection unit (31) is held in a connected state via the moving body (35) or held in a non-connected state. A decorative light-emitting device. A decorative light-emitting device according to any one of claims 1 to 5,
The LED drive circuit (3) starts counting when power is supplied from the battery (4) to the LED (2), and continues to supply power to the LED (2) during the counting, and the time is up. A decorative light emitting device comprising a first timer (63) for stopping power supply to the LED (2). The decorative light emitting device according to claim 6,
The LED drive circuit (3) includes a second timer (65) that starts counting when the first timer expires and holds the LED (2) in an extinguished state until the time expires. A decorative light emitting device. The decorative light-emitting device according to claim 6 or 7, wherein the LED drive circuit (3) further includes a lighting circuit (64) for blinking the LED (2) in a predetermined lighting pattern. A decorative light emitting device. A decorative light emitting device according to any one of claims 1 to 7,
The LED (2) is a multi-color LED (2A) having a plurality of different emission colors, and includes a plurality of light emitting elements (20) and a lighting circuit (23) built in a package (21), and the lighting A decorative light-emitting device, wherein the circuit (23) lights a plurality of light-emitting elements (20) in a predetermined lighting pattern. A decorative light emitting device according to any one of claims 1 to 9,
The decorative light-emitting device, wherein the container (1) has a watertight structure. A decorative light-emitting device according to any one of claims 1 to 10,
The decorative light emitting device, wherein the container (1) includes a diffusing portion (11) for diffusing light emitted from the LED (2) in the light transmitting portion. A decorative light-emitting device according to any one of claims 1 to 11,
A decorative light-emitting device, wherein the light-emitting device (100) is used floating on a water surface (WL).

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