JP2008041594A - Lighting fixture and lantern - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture along with a lantern, equipped with a projector function that can be used even in the field where no power outlet is available. <P>SOLUTION: The lighting fixture comprises an LED light source 33 which is driven with a battery 51 and a lighting lamp 41, or the LED light source 33 which is driven with the battery 51, and the lighting lamp 41 which emits light by combustion of fuel; a projector module 30 which projects a projection image using the light from the LED light source 33; and a lighting part 30 which radiates light of the lighting lamp 41 to the outside for lighting. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lighting device and a lantern having a projector function.

A projector device that can be used as a flashlight in addition to a function of projecting an image recorded on a recording medium onto a screen is known as a conventional technique (for example, Patent Document 1).
JP-A-6-59239

  The conventional projector device described in Patent Document 1 cannot be used in a place where there is no outlet because it does not take into account the power source when carrying it.

(1) The illumination device of the invention of claim 1 is a battery-driven light source, projection means for projecting a projection image using light from the light source, and radiation for radiating light from the light source to the outside for illumination. Means.
(2) The invention of claim 2 is characterized in that, in the illumination device according to claim 1, the light source for projection and the light source for illumination are different light sources.
(3) The illumination device of the invention of claim 3 is a projection image using a first light source driven by a battery, a second light source by light emission of combustion of fuel, and light from the first light source. Projection means for projecting and radiation means for radiating the light of the second light source to the outside for illumination are provided.
(4) According to a fourth aspect of the present invention, in the illumination device according to the third aspect, an injection port is provided for supplying fuel in a direction different from the projection direction of the projected image.
(5) The invention of claim 5 is the illumination device according to any one of claims 2 to 4, characterized in that the projection means is provided below the light source for illumination.
(6) The invention of claim 6 is the illumination device according to any one of claims 1 to 5, characterized in that it comprises at least one of a memory card slot and a TV tuner.
(7) The invention of claim 7 is the illumination device according to claim 1 or 2, wherein when the projection image is projected by the projection means, the amount of illumination light by the light source is reduced and projection of the projection image by the projection means is stopped. Then, it is provided with the control means which increases the light quantity of the illumination light by a light source, It is characterized by the above-mentioned.
(8) The invention of claim 8 is the lighting device according to any one of claims 1 to 5, wherein the memory card slot and the external input terminal, the memory card insertion in the memory card slot, and the signal at the external input terminal And a control means for projecting a projected image by the projecting means and reducing the amount of illumination light from the illumination light source when detecting any one of the input and the terminal connection of the external input terminal.
(9) A lantern according to a ninth aspect of the present invention includes the illumination device according to any one of the first to eighth aspects.

  According to the present invention, a lighting device having a projector function can be used even in a place where there is no outlet.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is an external view of a lantern 1 with a projector according to an embodiment of the present invention. The projector-equipped lantern 1 emits light from the fluorescent tube 11 by a built-in battery. As shown in FIG. 1, the projector-equipped lantern 1 includes a fluorescent tube 11, a squirt 12, and a hanging tool 13 in the same manner as a normal dry battery type lantern. Further, since it has a projector function, it includes a projection port 14, a function changeover switch 15, a memory card slot port 16, a TV channel switching button 17, and an external input terminal 18 of the projector module 30 described later.

  A projection image is projected from the projection port 14 in FIG. 1 by the projector function.

  The function changeover switch 15 is a rotatable switch, and switches between the illumination function and the projector function of the projector-equipped lantern 1. The function changeover switch 15 displays the switching positions of “OFF”, “LIGHT”, “PJ”, “AUTO”, and “TV”. When the switching position of the function selector switch 15 is set to “OFF”, the function of the projector-equipped lantern 1 is stopped. When the switching position is set to “LIGHT”, the illumination function of the lantern 1 with a projector operates and the projector function stops. When the switching position is set to “PJ”, the illumination function is stopped, or the light quantity of the fluorescent tube 11 is reduced, and the projector function is activated. When the switching position is set to “AUTO”, switching between the illumination function and the projector function is automatically controlled. Details of this automatic control will be described later. When the switching position is set to “TV”, the illumination function is stopped and the projector function is activated. The broadcast video received by the built-in TV tuner is projected from the projection port 14.

  The memory card slot 16 is an insertion slot into which a memory card storing images and videos is inserted. The channel switching button 17 is a button for switching a channel received by the built-in TV tuner. The external input terminal 18 is a terminal for connecting a cable connected to an external device such as a video camera.

  FIG. 2 is a block diagram for explaining the configuration of the projector-equipped lantern 1 of FIG. In FIG. 2, the projector-equipped lantern 1 includes a control circuit 20, a projector module 30, an illumination unit 40, a power supply unit 50, and an input unit 60.

  The control circuit 20 sends a control signal to each part of the projector-equipped lantern 1 by performing a predetermined calculation using a signal input from each part of the projector-equipped lantern 1 based on the control program. Control the lighting function and projector function. The power supplied from the power supply unit 50 is also controlled. The control program is stored in a nonvolatile memory (not shown) in the control circuit 20.

  The projector module 30 has a projector function, and includes a projection lens 31, a reflective liquid crystal element 32, an LED light source 33, a lens driving unit (circuit) 34, a liquid crystal element driving unit (circuit) 35, and an LED driving unit ( Circuit) 36. The LED drive unit 36 supplies current from the battery 51 to the LED light source 33 in accordance with the LED drive signal output from the control circuit 11. The LED light source 33 illuminates the reflective liquid crystal element 32 with brightness according to the supply current.

  The liquid crystal element driving unit 35 generates a liquid crystal element driving signal according to the image data, and drives the reflective liquid crystal element 32 with the generated driving signal. Specifically, a voltage corresponding to the image signal is applied to the liquid crystal layer for each pixel. In the liquid crystal layer to which a voltage is applied, the arrangement of liquid crystal molecules changes, and the light transmittance of the liquid crystal layer changes. Thus, the reflective liquid crystal element 32 generates an optical image by modulating the light from the LED light source 33 in accordance with the image signal.

  The lens driving unit 34 drives the projection lens 31 to advance and retract in the optical axis direction of the projection lens 31 based on the control signal output from the control circuit 20. Further, the lens driving unit 34 can adjust the focus of the image on the projection surface placed in a predetermined projection distance range by driving the focus lens of the projection lens 31. The projection lens 31 projects the light image emitted from the reflective liquid crystal element 32 onto a projection surface such as a screen.

  The illumination unit 40 has an illumination function, and includes an illumination lamp 41 and an illumination lamp drive unit 42. The illumination lamp drive unit 41 supplies the current from the battery 51 to the illumination lamp 33 in accordance with the illumination lamp drive signal output from the control circuit 11. In addition to the fluorescent tube 11, a halogen lamp, a krypton lamp, or the like is used as the illumination lamp 33.

  The power supply unit 50 supplies necessary power to each unit in the projector-equipped lantern 1 and includes a battery 51 and a power supply circuit 52. The power supply circuit 52 converts the voltage supplied from the battery 51 into a predetermined voltage. The battery 51 includes a rechargeable battery, a removable battery pack, a dry battery, or the like.

  The input unit 60 has a function of inputting an external video signal or the like to the projector-equipped lantern 1 and includes a TV tuner 61, a speaker 62, an external input / output terminal 63, a memory card slot 64, and an operation device 66. The TV tuner 61 receives a television broadcast according to a command from the control circuit 20. The speaker 62 outputs audio information received by the TV tuner 61. The external input / output terminal 63 receives data from an external device via a cable (not shown) according to a command from the control circuit 20. The memory card slot 64 reads image data stored in the loaded memory card 65. The read image data is read by the control circuit 20 and stored in a memory (not shown). The operation device 66 includes buttons and switches such as the function selector switch 15 and the TV channel selector button 17. By operating the operation device 66, it is possible to switch functions, and to forward, return, temporarily stop images projected sequentially on the projection surface.

  Next, the structure of the projector module 30 will be described with reference to FIG. The projector module 30 includes a polarizing beam splitter 37 in addition to the projection lens 31, the reflective liquid crystal element 32, the LED light source 33, and the like described above. The operation of the projector module 30 is as follows. The LED light source 33 emits white light, is reflected by the splitter surface 37 a of the polarization beam splitter 37, and is guided to the reflective liquid crystal element 32. The reflective liquid crystal element 32 includes pixels for red component, green component, and blue component, and a single reflective liquid crystal element 32 generates a color image. White light emitted from the LED light source 33 is modulated into light of each color component. The modulated reflected light is transmitted through the splitter surface 37 a of the polarization beam splitter 37 and guided to the projection lens 31. And a projection image is projected on a projection surface.

  Next, the illumination / projector switching automatic control process of the lantern 1 with a projector according to the embodiment of the present invention will be described with reference to the flowchart of FIG. The process of FIG. 4 is executed in the control circuit 20 by a program that starts when the switching position of the function selector switch 15 is set to “AUTO”.

  In step S <b> 401, it is determined whether the memory card 65 is inserted into the memory card slot 64 based on a memory card attachment signal from the memory card slot 64 or data read from the attached memory card memory 65. If it is attached, an affirmative determination is made in step S401, and the process proceeds to step S402. If it is not attached, a negative determination is made in step S401, and the process proceeds to step S404. In step S402, the light quantity of the illumination lamp 41 is reduced to zero or a predetermined value. In step S403, an image stored in the memory card 65 is projected from the projector module 30.

  In step S404, it is determined whether the external input terminal 63 is connected by another terminal or a signal is input from the external input terminal 63. If an affirmative determination is made in step S404, the process proceeds to step S405, and the light amount of the illumination lamp 41 is reduced to zero or a predetermined value. If a negative determination is made in step S404, the process proceeds to step S407, and the light amount of the illumination lamp 41 is increased. In step S406, an image or video input from the external input terminal 63 from the projector module 30 is projected. In step S408, power supply to the projector module 30 is stopped and the projector function is stopped.

According to the embodiment described above, the following operational effects can be obtained.
(1) Since the LED light source 33 and the illumination lamp 41 are driven by the current from the battery 51, the lantern 1 having a projector function can be used even in the outdoors where it is portable and has no outlet.

(2) Since the light source (LED light source 33) in the projector module 30 and the light source (illumination lamp 41) in the illumination unit 40 are different, it is possible to use a light source suitable for projection and a light source suitable for illumination, respectively. it can.

(3) Since the projector module 30 is provided below the illumination lamp 41 (11), it is possible to reduce the influence of the heat generated by the illumination lamp 41 (11) on the projector module 30.

(4) Since the projector-equipped lantern 1 is provided with at least one of the memory card slot 64 and the TV tuner 61, a large number of people can enjoy TV programs, images stored in the memory card 65, etc. even in the outdoors without an outlet. it can.

(5) When the projection image is projected from the projector module 30, the light amount of the illumination lamp 41 is reduced, and when the projection by the projector module 30 is stopped, the light amount of the illumination lamp 41 is increased. Therefore, in order to improve the effect of viewing the projected image, it is possible to save the trouble of reducing the light amount of the illumination lamp 41, and to save the trouble of increasing the light amount of the illumination lamp 41 again after the projection is completed. Convenience is improved.

(6) When any of the insertion of the memory card 65 in the memory card slot 64, the input of a signal at the external input terminal 63 (18) and the terminal connection of the external input terminal 63 (18) is detected, the projector module 30 generates a projected image. Projected to reduce the amount of light in the lamp for illumination. Therefore, after the memory card 45 is inserted into the memory card slot 64 or an external device is connected to the external input terminal 63 (18), the trouble of turning off the illumination lamp 41 or reducing the amount of light can be saved. , User convenience is improved.

(7) A projector function was added to the lantern. Since the lantern is indispensable for nighttime outdoor activities, the lantern is rarely left behind, and as a result, it is possible to prevent the projector from being forgotten or forgetting to charge the battery.

The embodiment described above can be modified as follows.
(1) If it is an illuminating device, it will not be limited to a lantern. For example, the present invention can be applied to portable lighting devices other than lanterns such as flashlights and disaster lights. A lighting device having a projector function can be used even in a lighting device other than a lantern or in the outdoors where there is no outlet.

(2) Although the illumination lamp 41 is turned on by the electric power from the battery 51, it may be turned on by fuel combustion. A projector-equipped lantern 1A that turns on the illumination lamp 41 by burning fuel will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the part which is common in the lantern 1 with a projector of embodiment of this invention, and a different part from the lantern 1 with a projector is mainly demonstrated.

  The projector-equipped lantern 1A burns gasoline in the mantle 19 to emit illumination light. The LED light source 33 for the projector is turned on by the power of the built-in battery 51 as in the embodiment. As shown in FIG. 5, the projector-equipped lantern 1 </ b> A includes a mantle 19, a thermal power adjustment knob 110, a fuel inlet 111, and a fuel tank 112 in the same manner as a normal fuel lantern. In the projector-equipped lantern 1A, a lighting device having a projector function can be used even in the outdoors where there is no outlet.

  In the case of the projector-equipped lantern 1A, the projector module 30 is provided below the illumination lamp 41 (11). Therefore, it is possible to reduce the influence of heat generated by the illumination lamp 41 (19).

  Further, the fuel injection port 111 is provided at a position different in the circumferential direction from the direction in which the projection image is projected by the projector module 30, that is, the installation surface of the projection port 14. As a result, fuel spilled during fuel injection does not hit the projection port 14.

  The fuel for turning on the lighting lamp 41 is not limited to gasoline, but may be gas, kerosene, alcohol, or the like.

(3) A light source for projection and a light source for illumination may be shared. For example, the LED light source 33 may be emitted outside for illumination. In this case, it is preferable to provide light guiding means for radiating the light from the LED light source 33 to the outside. By doing so, the projector-equipped lantern 1 can be reduced in size.

(4) A remote control function may be provided so that the illumination function and the projector function can be switched or the sound of the speaker 62 can be adjusted by the remote control.

(5) An FM tuner may be incorporated so that FM broadcast programs can be heard from the speaker 62 and FM broadcast character information can be projected from the projector module 30.

(6) A wireless communication function such as a wireless LAN or Bluetooth may be incorporated so that image data can be input from a digital camera, video camera, mobile phone, personal computer, or the like having the same wireless communication function.

(7) A solar cell may be provided so that power can be charged to the battery 51 from sunlight.

(8) In order to prevent water or the like from entering the interior even when used outdoors, the projector-equipped lantern 1 may be waterproofed.

(9) In order to prevent contamination of the projection lens, a lens barrier (lens cap) may be provided at the projection port 14.

(10) The projector module 30 and the illumination unit 40 may be detachable via a connector provided in the power supply unit 50 or the input unit 60.

(11) When the memory card 65 is inserted into the memory card slot 64, a slide show of the image data stored in the memory card 65 may be started.

(12) When the image stored in the memory card 65 is projected by the projector module 30, when the function selector switch 15 is switched to "LIGHT", the image data at the time of switching is temporarily stored, and again When the projection is started, the projection may be resumed from the image projected at the time of switching.

  The above description is merely an example, and the present invention is not limited to the above embodiment.

1 is an external view of a lantern with a projector according to an embodiment of the present invention. It is a block diagram for demonstrating the structure of the lantern with a projector by one embodiment of this invention. It is a figure for demonstrating the structure of the projector module by one embodiment of this invention. It is a flowchart for demonstrating the illumination / projector switching automatic control process of the lantern with a projector by one embodiment of this invention. It is an external view of the lantern with a projector by other embodiment of this invention.

Explanation of symbols

1, 1A Lantern with projector 11 Fluorescent tube 14 Projection port 15 Function selector switch 18, 63 External input / output terminal 19 Mantle 30 Projector module 31 Projection lens 32 Reflective liquid crystal element 33 LED light source 41 Lighting lamp 51 Battery 61 TV tuner 64 Memory Card slot 111 Fuel inlet

Claims (9)

A battery-powered light source;
Projection means for projecting a projected image using light from the light source;
An illuminating device comprising: radiation means for radiating light from the light source to the outside for illumination. The lighting device according to claim 1.
The illumination device, wherein the light source for projection and the light source for illumination are different light sources. A first light source driven by a battery;
A second light source by emission of fuel combustion;
Projection means for projecting a projection image using light from the first light source;
An illuminating device comprising: radiation means for radiating light from the second light source to the outside for illumination. The lighting device according to claim 3.
An illumination device comprising an inlet for replenishing the fuel in a direction different from a projection direction of the projection image. The lighting device according to any one of claims 2 to 4,
An illuminating device, wherein the projection means is provided below the illumination light source. In the illuminating device of any one of Claims 1 thru | or 5,
An illumination device comprising at least one of a memory card slot and a TV tuner. The lighting device according to claim 1 or 2,
When the projection image is projected by the projection unit, the light amount of the illumination light by the light source is reduced, and when the projection image projection by the projection unit is stopped, the control unit increases the light amount of the illumination light by the light source. A lighting device. In the illuminating device of any one of Claims 1 thru | or 5,
Memory card slot and external input terminal,
When one of the insertion of a memory card in the memory card slot, the input of a signal at the external input terminal and the terminal connection of the external input terminal is detected, a projection image is projected by the projection means, and illumination by the illumination light source An illumination device, further comprising a control unit that reduces the amount of light.   A lantern provided with the lighting device according to claim 1.

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