JP2013178213A - Portable lighting device, and guiding method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly execute guiding to a destination without impairing a function of a flash lamp.SOLUTION: A portable lighting device includes: a light source portion 20; a micro mirror element 25 and an image driving portion 19 for displaying an image by reflection light using light from the light source; a projection lens portion 27 for emitting an optical image according to the displayed image; a GPS antenna 21 and a GPS receiver 15 for obtaining present position information; a geomagnetic sensor 16 and a three-axis acceleration sensor 17 for detecting a direction of the optical image emitted by the projection lens portion 27; and a CPU 11 for calculating a guiding direction from the information indicating a present position and the emitting direction of the projection lens portion 27, and displaying an image including a guiding mark indicating the calculated guiding direction by the micro mirror element 25.

Description

  The present invention relates to a portable lighting device, a guidance method, and a program that are particularly useful flashlights in a disaster.

  Flashlights are widely used to brightly illuminate the surroundings at night and indoors in dark places, and are particularly important as disaster countermeasures such as earthquakes.

  For example, in the event of a disaster such as a large-scale earthquake or tsunami, it is important to evacuate to a safe place as soon as possible. As a device for guiding to an evacuation site, for example, use of a mobile phone terminal or a smart phone that is widely used can be considered. However, most mobile phone terminals and smart phones use a communication system with many base stations connected to the network, which is called a cellular phone system. The base stations in the area were damaged by an earthquake or tsunami. In some cases, communication is interrupted, so it cannot be a guidance device in a disaster.

  On the other hand, a technology that realizes a new usability of a portable information device such as a mobile phone having a small projector function is considered so as to function as a flashlight which is a disaster countermeasure article. (For example, Patent Document 1)

JP 2006-093801 A

  The technology described in the above-mentioned patent literature is a portable information device such as a mobile phone having a small projector function, which is further added with a function as a flashlight. Therefore, when communication at the time of disaster is interrupted as described above, guidance to an evacuation site cannot be performed.

  The present invention has been made in view of the above circumstances, and the purpose of the present invention is to reliably carry out guidance to an evacuation site in a disaster without impairing the function as a flashlight. It is an object of the present invention to provide a portable lighting device, a guidance method, and a program capable of performing the above.

  In one embodiment of the present invention, a light source, a display unit that emits light from the light source and displays an image by transmitted light or reflected light, and a projection that emits a light image corresponding to the image displayed by the display unit Means, destination storage means for storing destination position information, current position acquisition means for acquiring current position information, direction detection means for detecting the direction of a light image emitted by the projection means, and the current Guidance direction calculation means for calculating a guidance direction based on information indicating the current position acquired by the position acquisition means, position information of the destination stored in the destination storage means, and an emission direction detected by the direction detection means, and the guidance And a display control unit for displaying an image including a guidance mark indicating the guidance direction calculated by the direction calculation unit on the display unit.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to implement to the destination reliably, without impairing the function as a flashlight.

The figure explaining the use condition of the flashlight with a navigation function which concerns on one Embodiment of this invention. The block diagram which shows schematic structure of the functional circuit of the flashlight with a navigation function which concerns on the same embodiment. The flowchart which shows the processing content of the operation | movement with the flashlight with a navigation function which concerns on the embodiment. The figure which shows the example of an image projected in the navigation mode concerning the embodiment in steps. The figure which shows the example of an image projected in the navigation mode concerning the embodiment in steps.

  Hereinafter, an embodiment in which the present invention is applied to a flashlight with a navigation function (hereinafter abbreviated as “flashlight” in the text) as a portable lighting device will be described in detail with reference to the drawings.

  FIG. 1 is a diagram for explaining a usage situation of the flashlight 10 according to the present embodiment. As shown in the figure, when the substantially cylindrical flashlight 10 is turned on in a navigation mode to be described later, the navigation indicating the guidance direction according to the current position and the destination registered in advance within the irradiation range IR. A spot NS (guide mark) is projected.

  In the figure, when the direction in which the user (not shown) travels with the flashlight 10 is FD, the traveling direction FD coincides with the direction indicated by the projected position of the navigation spot NS within the irradiation range IR. In other words, this represents a state in which the user has only to go straight in the direction in which the navigation spot NS is projected.

  Next, a schematic functional configuration of the flashlight 10 when a DLP (Digital Light Processing) (registered trademark) system is adopted will be described with reference to FIG.

  In the figure, reference numeral 11 denotes a CPU. The CPU 11 controls all operations in the flashlight 10 in an integrated manner. The CPU 11 is directly connected to the main memory 12 and the program memory 13. The main memory 12 is composed of, for example, an SRAM and functions as a work memory for the CPU 11.

  The program memory 13 is composed of an electrically rewritable nonvolatile memory such as a flash ROM, and stores an operation program executed by the CPU 11 and various fixed data. The program memory 13 includes a destination storage unit 13A.

  The destination storage unit 13A previously stores latitude, longitude, and altitude information as position information of the nearest evacuation site corresponding to the storage location of the flashlight 10. That is, the contents of the destination storage unit 13A are set in advance by connecting an electronic device (not shown) such as a personal computer via the USB terminal 24, which will be described later, and executing the application program for the flashlight 10. Is remembered.

  The CPU 11 controls the flashlight 10 by reading out the operation program, fixed data, etc. stored in the program memory 13, expanding and storing the program in the main memory 12, and executing the program. Control.

  The CPU 11 executes various operations such as power-on and mode switching in response to a key operation signal from the key operation unit 14. The key operation unit 14 includes a power / mode key that also serves as a mode switch.

The CPU 11 further includes a GPS (Global Positioning System) receiver 15, a geomagnetic sensor 16, a triaxial acceleration sensor 17, a USB interface (I / F) 18, an image driving unit 19, via the system bus SB. And connected to the light source unit 20.
The GPS receiver 15 receives incoming radio waves from a plurality of GPS satellites (not shown) received by the GPS antenna 21, calculates latitude, longitude, altitude information and current time of the current position, and outputs the calculation result to the CPU 11. To do.

  The geomagnetic sensor 16 is used to realize an electronic compass function using, for example, a magnetic impedance element. In this embodiment, the azimuth of the projection optical axis direction by the projection lens unit 27 described later is calculated.

  The triaxial acceleration sensor 17 is constituted by, for example, a piezoresistive semiconductor type triaxial acceleration sensor, and detects the tilt and posture when the flashlight 10 is carried.

  The USB interface 18 is connected to an external electronic device (not shown) such as a personal computer via the USB terminal 24, and the contents of the destination storage unit 13A of the program memory 13 are stored according to data processing in the personal computer. Is set.

  The image driving unit 19 multiplies a preset frame rate, for example, 30 [frames / second], the number of color component divisions, and the number of display gradations in accordance with the image data given from the CPU 11, so as to obtain a higher speed. The micromirror element 25 is driven to display by time division driving.

  The micromirror element 25 is a display operation by individually turning on / off each tilt angle of a plurality of microarrays arranged in an array so as to be circular as a whole, for example, each micromirror having a diameter direction of up to 640 pixels at a high speed. Thus, a circular light image is formed by the reflected light.

  Further, a rectangular micromirror element having a normal aspect ratio (3: 4 or 16: 9) may be used.

  In that case, the light projection spot may be a rectangular one as it is, or in order to make the light image appear as a light projection spot like a flashlight, only the central circular portion is projected brightly (white). The surroundings may be projected dark (black).

  On the other hand, R (red), G (green), and B (blue) light is emitted cyclically from the light source unit 20 in a time division manner. The light from the light source unit 20 is totally reflected by the mirror 26 and applied to the micromirror element 25.

  Then, an optical image is formed by the reflected light from the micromirror element 25, and the formed optical image is projected onto a road surface or the like to be projected via the projection lens unit 27.

  The light source unit 20 uses, for example, an LED (light emitting diode) that emits red light, an LD (semiconductor laser) that emits blue light, and a rotating phosphor that emits green light as fluorescence when irradiated with the blue light. R (red), G (green), and B (blue) light is emitted cyclically by the division.

  In the flash light mode (illumination mode), which will be described later, using the light from the GPS receiver 15, the image driving unit 19 causes the reflected light of all the micromirrors constituting the micromirror element 25 to be incident on the projection lens unit 27. By controlling the driving, the projection lens unit 27 emits the projection light that is mixed color in the user's vision and the entire surface is white.

  It should be noted that other configurations may be used for the semiconductor light emitting element, the phosphor, and the like constituting the light source unit 15.

Next, the operation of the above embodiment will be described.
In this operation, it is assumed that the location information of the evacuation site as the destination is previously set and stored by the user in the destination storage unit 13A of the program memory 13 in advance.

  In the flashlight 10, the power / mode key constituting the key operation unit 14 is changed from the power-off state to the power-on state in the navigation mode by pressing and holding for a certain time, for example, 2 [seconds] or longer. It is assumed that the power is turned on in the flash light mode with a short pressing operation for less than [seconds]. Furthermore, from the power-on state, the mode is switched while the power is turned on by a short pressing operation for a certain time, for example, less than 2 [seconds], while the power is turned off by a long pressing operation for 2 [seconds] or more. And

  FIG. 3 is a flowchart showing processing contents executed under the control of the CPU 11. Initially, the CPU 11 waits for the power to be turned on by operating the power / mode key of the key operation unit 14 (step S101).

  When the power is turned on by the operation of the power / mode key of the key operation unit 14, the CPU 11 determines that in step S101, and then whether the navigation mode is selected by long press according to the continuous operation time of the power / mode key. It is determined whether or not (step S102).

  Here, if it is determined that the operation time of the power / mode key is less than the predetermined time of 2 [seconds], it is assumed that the flashlight mode is selected instead of the navigation mode, and all the elements constituting the micromirror element 25 are configured. The image drive unit 19 is driven and controlled so that all the reflected light from the minute mirror is incident on the projection lens unit 27, and the projection lens unit 27 emits projection light whose entire surface is white (step S103).

  Then, while executing the flash light mode in step S103, it is determined whether or not the power / mode key of the key operation unit 14 is operated to cancel the current flash light mode (step S104).

  If it is determined that the power / mode key has not been operated and the release of the flashlight mode has not been selected, the process returns to step S103, and thereafter, the processes in steps S103 and S104 are repeatedly executed in the flashlight mode. While the emission of the white light continues, it waits for the flash light mode to be released.

  If it is determined in step S102 that the navigation mode is selected by long pressing from the continuous operation time of the power / mode key when the power is turned on, the CPU 11 is set in the destination storage unit 13A of the program memory 13 next. The position information of the destination of the kite is read (step S105).

  Here, the CPU 11 determines whether or not the position information of the destination is preset in the destination storage unit 13A in step S105, and the position information can be read (step S106).

  If it is determined that the location information of the destination is not set in the destination storage unit 13A and the location information cannot be read out, guidance to the destination cannot be performed. A mark indicating that there is no setting is displayed on the micromirror element 25 via the image driving unit 19 (step S107).

  FIG. 4A illustrates the projection contents corresponding to the display on the micromirror element 25 at this time. In FIG. 5A, a “?” Mark is arranged in red, for example, in four directions on the outer peripheral edge of a circular image, and an image that is white in all other cases is displayed by the micromirror element 25. Perform the projection.

  At this time, since the posture of the flashlight 10 itself, the direction in which the projection lens unit 27 is facing, and the like are not detected, the image cannot be displayed in accordance with the traveling direction FD as shown in FIG. The “?” Mark does not necessarily match the traveling direction FD.

  After displaying the mark indicating that the destination is not set on the micromirror element 25 and executing projection, the CPU 11 operates the power / mode key of the key operation unit 14 to cancel the current navigation mode. It is determined whether or not it has been done (step S117).

  If it is determined here that a key operation for canceling the navigation mode has been performed, the process returns to step S101.

  If it is determined in step S106 that the destination location information is set in the destination storage unit 13A and the location information can be read, the GPS receiver 15 acquires the current location information. (Step S108).

  Next, it is determined whether or not the acquisition of the current position is a process that starts a series of guiding operations using the GPS receiver 15, that is, whether or not the current position is a starting position of the guiding operation (step S109). ).

  Here, the acquisition of the current position is a process of starting a series of guidance operations using the GPS receiver 15, and the current position as the start position is determined only when it is determined that the current position is the start position of the guidance operation. The position information is held and stored in the main memory 12 which is a work memory (step S110).

  Next, information on the latitude and longitude is set in advance to determine whether the position information of the destination and the information on the current position acquired in the immediately preceding step S108 are substantially equal, that is, whether or not the destination has already been reached. It is determined that an error of about 15 [m] is allowed by rounding the error range that is the threshold value, for example, in units of 1/2 [second] (step S111).

  Here, if the position information of the destination is different from the information of the current position, and it is determined that the destination has not been reached yet, the CPU 11 again determines from the current position based on the information on the current position and the position information on the destination. The direction and distance to the destination are calculated (step S112).

  Next, the CPU 11 calculates the attitude of the flashlight 10 at the present time point, specifically the vertical direction in the plane orthogonal to the projection optical axis of the projection lens unit 27, taking into account the gravitational acceleration by the triaxial acceleration sensor 17. Then, it is detected which direction of the circular image displayed by the micromirror element 25 should be “up” (step S113).

  Further, the CPU 11 detects the direction in which the projection optical axis of the projection lens unit 27 is directed by the geomagnetic sensor 16 (step S114).

  As described above, the position of the navigation spot NS displayed on the screen is calculated based on the calculated azimuth and distance from the current position to the destination, the distance from the guidance disclosure position to the destination, the detected attitude of the flashlight 10 and the azimuth. Calculate (step S115).

  And the image which has arrange | positioned the navigation spot NS with the display form according to the calculated position is displayed on the micromirror element 25 via the image drive part 19 (step S116).

  FIG. 4B illustrates the content of the guidance image projected at the beginning of this guidance. In FIG. 5B, the navigation spot NS is arranged on the outer peripheral edge of the circular irradiation range IR, on the side of the traveling direction FD that the user holds and directs the flashlight 10, and is projected so as to blink.

  Therefore, it can be easily understood visually and sensuously that the user's traveling direction FD is correct and should proceed as it is at the present time, and most of the irradiation range IR is irradiated with white light as a flashlight, and Since the navigation spot NS is projected so as to blink, it is possible to avoid a situation in which even if there is a dangerous object, the discovery of the navigation spot NS is hindered by the navigation spot NS.

  The CPU 11 determines whether or not the current navigation mode has been canceled by operating the power / mode key of the key operation unit 14 while projecting an image that guides the user's direction of travel (step S117).

  If it is determined that the key operation for canceling the navigation mode has not been performed yet, the process returns to step S108 again to continue the guidance operation.

  In this way, by repeatedly executing the processing of steps S108 to S17, the image projection operation according to the azimuth and distance to the destination is continued.

  FIG. 4C shows another example of a guidance image projected at the beginning of guidance, as in FIG. In FIG. 6C, the navigation spot NS is arranged in the outer peripheral edge of the circular irradiation range IR, in a direction that is approximately 90 ° to the right of the traveling direction FD that the user has and faces the flashlight 10, Projected to flash.

  Therefore, it can be easily understood visually and sensuously that the destination is located with respect to the current traveling direction FD of the user and the user should proceed in the right direction.

  FIG. 5A shows an example of a guidance image projected in the middle of the guidance process. In FIG. 4A, the analog is relative to the traveling direction FD that is held by the user and directed toward the flashlight 10, which is away from the outer peripheral edge of the circular irradiation range IR and is about one third of the radius. If expressed on the watch face, the navigation spot NS is arranged in the direction of approximately 11 o'clock and projected so as to blink.

  Therefore, the user easily understands visually and sensuously that the destination is located slightly to the left with respect to the user's current traveling direction FD and that he is about to reach the middle of the journey to the destination. it can.

  FIG. 5B shows an example of a guidance image projected in a state where the guidance process is more than halfway. In FIG. 7B, the front side of the circular irradiation range IR is substantially close to the projection optical axis A and is substantially close to the projection light axis A, and the front right direction with respect to the traveling direction FD that the user holds and faces the flashlight 10. A navigation spot NS is arranged in the direction of 45 ° and projected so as to blink.

  Therefore, the user can easily visually and sensuously understand that the destination is located in the right oblique direction with respect to the current traveling direction FD of the user and that the distance to the destination is small.

  As a result of continuing the guidance as described above, when the current position becomes substantially equal to the position information of the destination, it is determined in step S111, and an image with a mark indicating that the destination has been reached is projected ( Step S118).

  FIG. 5C shows an example of a guide image projected when the destination is reached. In FIG. 6C, a navigation spot NS having a clearly larger diameter is arranged so as to be concentric with the center of the circular irradiation range IR and the projection optical axis A, and projected so as to blink. The

  Therefore, the user can easily understand visually and sensory that the current position is around the destination.

  As described above in detail, according to the present embodiment, it is possible to reliably perform guidance to the destination without impairing the function of the flashlight.

  In the above embodiment, since the image including the navigation spot NS as the guidance mark whose circumferential position is determined according to the calculated guidance direction is projected, the direction in which the destination is located with respect to the current traveling direction is determined. Easy to understand visually and sensorially.

  Furthermore, in this embodiment, since the image including the navigation spot NS as the guidance mark whose radial position is determined according to the distance to the destination is projected, the current approximate position in the entire process is visually determined. Easy to understand sensuously.

  In particular, in the above-described embodiment, the navigation spot NS is arranged at a position closer to the center in the radial direction as the distance to the destination is closer, so the navigation spot NS can be expressed in a form that is extremely easy to understand sensuously. .

  In the above embodiment, the navigation spot NS corresponding to the guidance mark is displayed as a circular spot, but may be expressed as a mark such as an arrow.

  Further, in the above embodiment, only a part of the case of reaching the destination has been described, but the display form of the navigation spot NS to be displayed is changed as the distance to the destination decreases, for example, a blinking form ( By changing various display patterns such as cycle, duty, etc., color, and shape (including size, etc.), the degree of progress in the process can be expressed more easily.

  For example, as the distance to the destination gets closer, the blinking cycle of the navigation spot NS may be accelerated, the color may be changed from a cold color to a warm color stepwise, or the size may be increased stepwise.

  Although not described in the above embodiment, it further includes an audio output system including a sound source circuit, an audio amplifying circuit, and a sound emitting unit such as a speaker, and in addition to the display of the navigation spot NS, the distance to the destination is As the number decreases, the intermittent period and pitch of the intermittent sound may change, and the degree of progress in the process can be expressed more easily in the sense of hearing. In addition, it is possible to inform the surroundings of the presence of the person by making a sound.

  In the above embodiment, the direction in which the destination is located in the projected image is expressed by the circular navigation spot NS. However, the present invention is not limited to this, and specific orientation information such as E (east), Characters W (west), S (south), and N (north) may be written, and characters in the direction to travel may be projected in a different color from other characters.

  Further, unlike the above embodiment, the program memory 13 may further include a map information storage unit 13B to store map information. In this way, in addition to the location information of the destination set in the destination storage unit 13A, the map information set in the map information storage unit 13B can be used, and guidance is performed based on the map information at the start of guidance. It is possible to calculate a route (direction), and guide by a route calculated according to an actual situation, not a simple direction obtained from the current position and the position of the destination. In addition, after adopting the above configuration, the distance to the next intersection and the direction to bend are symbolized and displayed together with the overall remaining distance, such as a frame map notation used in car rally competitions, etc. It is good also as what expresses within the range which does not inhibit an irradiation range.

  Further, the image emitted from the projection lens unit 27 is not necessarily irradiated perpendicularly to the road surface or wall surface to be projected, and it is easily assumed that the irradiated image causes a large trapezoidal distortion.

  For this reason, a distance measuring sensor that performs two-dimensional distance measurement with respect to the irradiation direction of the projection lens unit 27, or an imaging unit that has an automatic focusing function capable of acquiring a focal length by two-dimensionally scanning the projection surface, is provided. By performing the trapezoidal correction corresponding to the distance, it is possible to keep the shape of the projected image constant regardless of the irradiation angle, and always provide a guide display that is appropriate and easy to see for the user.

  Further, in the present embodiment, the light source has a DLP (registered trademark) type projection mechanism using a semiconductor light emitting element such as an LED (light emitting diode) or LD (semiconductor laser) as the light source. In consideration of portability, such as halogen xenon mixed gas lamps and HID lamps (high-intensity discharge lamps) as light sources, and transmissive or reflective color liquid crystal panels as display elements. Other mechanisms may be used above.

  In the above embodiment, the mechanism that can be corrected has been described in consideration of the fact that the image (light image) rotates depending on how the flashlight 10 is held. In the case of the portable lighting device provided, the portable lighting device may not include a mechanism for detecting the posture of the flashlight 10.

  In addition, as described above, if the light projection spot is projected in a rectangle instead of a circle, similarly, the posture of the flashlight 10 is corrected to a normal state from the shape of the light image. Therefore, a mechanism that does not include a mechanism for detecting the posture of the flashlight 10 may be used.

  In the present embodiment, the use at the time of disaster such as an earthquake has been mainly described. However, it can also be used at the time of emergencies in other cases, for example, at the time of distress in a mountain or the sea. Of course, the present invention can be used as a navigation device to the destination even when it is not an emergency.

  In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention in the implementation stage. Further, the functions executed in the above-described embodiments may be combined as appropriate as possible. The above-described embodiment includes various stages, and various inventions can be extracted by an appropriate combination of a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, if the effect is obtained, a configuration from which the constituent requirements are deleted can be extracted as an invention.

Hereinafter, the invention described in the scope of claims of the present application will be appended.
According to the first aspect of the present invention, the light source, the display means for displaying the image by the transmitted light or the reflected light, and the light image corresponding to the image displayed by the display means are emitted. Projection means; destination storage means for storing position information of the destination; current position acquisition means for acquiring current position information; direction detection means for detecting the direction of a light image emitted by the projection means; Guidance direction calculation means for calculating a guidance direction based on information indicating the current position acquired by the current position acquisition means, position information of the destination stored in the destination storage means, and an emission direction detected by the direction detection means; and And a display control means for displaying an image including a guidance mark indicating the guidance direction calculated by the guidance direction calculation means on the display means.

  According to a second aspect of the present invention, in the first aspect of the invention, the display control unit displays an image including a guidance mark whose position in the image is determined according to the guidance direction calculated by the guidance direction calculation unit. It is characterized by being displayed.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the display control means displays the guidance mark so as to blink.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein information indicating the current position acquired by the current position acquisition means and position information of the destination stored by the destination storage means And a distance calculation means for calculating a distance from the current position to the destination, wherein the display control means determines the display mode based on the distance to the destination calculated by the distance calculation means. An image including the image is displayed on the display means.

  According to a fifth aspect of the present invention, in the invention according to the fourth aspect, the display control means displays an image including a guide mark whose position in the image is determined according to the distance to the destination calculated by the distance calculation means. It is characterized by being displayed by a display means.

  According to a sixth aspect of the present invention, in the fifth aspect of the invention, the display control means includes a guide mark arranged at a position closer to the center of the image as the distance to the destination calculated by the distance calculation means is smaller. The included image is displayed by the display means.

  According to a seventh aspect of the present invention, in the invention according to any one of the fourth to sixth aspects, the display control unit blinks the guidance mark according to the distance to the destination calculated by the distance calculation unit. It is characterized by changing.

  The invention according to claim 8 is the invention according to any one of claims 4 to 7, wherein the display control means has at least one of a shape and a display color according to the distance to the destination calculated by the distance calculation means. An image including the determined guidance mark is displayed on the display means.

  The invention according to claim 9 outputs an intermittent sound in which at least one of the intermittent period and the pitch is adjusted according to the distance to the destination calculated by the distance calculating means in the invention according to any one of the fourth to eighth aspects. The sound output means is further provided.

  According to a tenth aspect of the present invention, in the invention according to any one of the first to ninth aspects, the display control means includes an illuminating portion over the entire surface other than the guidance mark indicating the guidance direction calculated by the guidance direction calculation means. The displayed image is displayed by the display means.

  The invention according to claim 11 is the invention according to any one of claims 1 to 10, further comprising posture detection means for detecting the posture of the apparatus, wherein the display control means is detected by the posture detection means. The orientation of the image including the guide mark is corrected based on the attitude of the portable lighting device.

  The invention according to claim 12 is the invention according to any one of claims 1 to 11, further comprising map information storage means for storing map information, wherein the guide direction calculation means is acquired by the current position acquisition means. Calculating the guidance direction based on the information indicating the current position, the position information of the destination stored in the destination storage means, the emission direction detected by the direction detection means, and the map information stored in the map information acquisition means. Features.

  According to a thirteenth aspect of the present invention, a light source, a display that displays an image by transmitted light or reflected light, and a projection that emits a light image corresponding to the image displayed on the display are irradiated with light from the light source. A destination storage step for storing destination position information; a current position acquisition step for acquiring current position information; and a direction of a light image emitted from the projection unit. A direction detection step, information indicating the current position acquired in the current position acquisition step, destination position information stored in the destination storage step, and an emission direction detected in the direction detection step. A guide direction calculating step for calculating, and a display control step for displaying an image including a guide mark indicating the guide direction calculated in the guide direction calculating step on the display unit.

  According to a fourteenth aspect of the present invention, there is provided a light source, a display that displays light by the light transmitted from or reflected from the light source, and a projection that emits a light image corresponding to the image displayed on the display. A program executed by a computer built in an apparatus including a unit, wherein the computer includes destination storage means for storing destination position information, current position acquisition means for acquiring current position information, and the projection unit. Direction detection means for detecting the direction of the emitted light image, information indicating the current position acquired by the current position acquisition means, destination position information stored by the destination storage means, and emission direction detected by the direction detection means And a display control unit for displaying an image including a guidance mark indicating the guidance direction calculated by the guidance direction calculation unit on the display unit. It is characterized by functioning.

  DESCRIPTION OF SYMBOLS 10 ... Flash light, 11 ... CPU, 12 ... Main memory, 13 ... Program memory, 13A ... Destination memory | storage part, 14 ... Key operation part, 15 ... GPS receiver, 16 ... Geomagnetic sensor, 17 ... 3-axis acceleration sensor, 18 DESCRIPTION OF SYMBOLS ... USB interface (I / F), 19 ... Image drive part, 20 ... Light source part, 21 ... GPS antenna, 24 ... USB terminal, 25 ... Micromirror element, 26 ... Mirror, 27 ... Projection lens part, FD ... Traveling direction , IR ... irradiation range, NS ... navigation spot.

Claims (14)

A light source;
Display means for irradiating light from the light source and displaying an image by transmitted light or reflected light;
Projection means for emitting a light image corresponding to the image displayed by the display means;
Destination storage means for storing destination location information;
Current position acquisition means for acquiring current position information;
Direction detection means for detecting the direction of the light image emitted by the projection means;
Guidance direction calculation means for calculating a guidance direction based on the information indicating the current position acquired by the current position acquisition means, the position information of the destination stored in the destination storage means, and the emission direction detected by the direction detection means;
A portable lighting device comprising: a display control unit configured to display an image including a guidance mark indicating a guidance direction calculated by the guidance direction calculation unit on the display unit.   2. The portable lighting device according to claim 1, wherein the display control means causes the display means to display an image including a guidance mark whose position in the image is determined according to the guidance direction calculated by the guidance direction calculation means.   3. The portable lighting device according to claim 1, wherein the display control means displays the guidance mark so as to blink. Further comprising distance calculation means for calculating the distance from the current position to the destination based on the information indicating the current position acquired by the current position acquisition means and the position information of the destination stored in the destination storage means,
The display control means causes the display means to display an image including a guide mark whose display form is determined based on the distance to the destination calculated by the distance calculation means. Any portable lighting device.   5. The portable illumination according to claim 4, wherein the display control means causes the display means to display an image including a guide mark whose position in the image is determined according to the distance to the destination calculated by the distance calculation means. apparatus.   The display control means causes the display means to display an image including a guidance mark arranged at a position closer to the center of the image as the distance to the destination calculated by the distance calculation means is smaller. The portable lighting device described.   The portable lighting device according to any one of claims 4 to 6, wherein the display control means changes a blinking form of blinking the guidance mark according to the distance to the destination calculated by the distance calculating means.   5. The display control unit according to claim 4, wherein the display unit displays an image including a guide mark in which at least one of a shape and a display color is determined according to the distance to the destination calculated by the distance calculation unit. The portable lighting device according to claim 7.   9. The sound output means according to claim 4, further comprising sound output means for outputting an intermittent sound in which at least one of the intermittent period and the pitch is adjusted according to the distance to the destination calculated by the distance calculating means. Portable lighting device.   10. The display control unit according to claim 1, wherein the display control unit causes the display unit to display an image in which the entire surface other than the guide mark indicating the guide direction calculated by the guide direction calculation unit is an illumination unit. The portable lighting device described. It further comprises posture detection means for detecting the posture of the device,
The said display control means correct | amends the direction of the image containing the said guidance mark based on the attitude | position of the said portable illuminating device detected by the said attitude | position detection means. Portable lighting device. Map information storage means for storing map information is further provided;
The guidance direction calculation means includes information indicating the current position acquired by the current position acquisition means, position information of the destination stored by the destination storage means, the emission direction detected by the direction detection means, and the map information acquisition means The portable lighting device according to any one of claims 1 to 11, wherein a guidance direction is calculated based on map information stored by the computer. Guidance in an apparatus including a light source, a display unit that emits light from the light source and displays an image by transmitted or reflected light, and a projection unit that emits a light image corresponding to the image displayed on the display unit A method,
A destination storage step for storing destination location information;
A current position acquisition step of acquiring current position information;
A direction detecting step for detecting the direction of the light image emitted from the projection unit;
A guidance direction calculation step of calculating a guidance direction based on information indicating the current position acquired in the current position acquisition step, location information of the destination stored in the destination storage step, and an emission direction detected in the direction detection step;
A display control step of displaying an image including a guide mark indicating the guide direction calculated in the guide direction calculation step on the display unit. Built-in apparatus including a light source, a display unit that emits light from the light source and displays an image by transmitted light or reflected light, and a projection unit that emits a light image corresponding to the image displayed on the display unit A program executed by a computer,
The above computer
Destination storage means for storing location information of the destination;
Current position acquisition means for acquiring current position information;
Direction detecting means for detecting the direction of the light image emitted from the projection unit;
Guidance direction calculation means for calculating a guidance direction based on information indicating the current position acquired by the current position acquisition means, destination position information stored in the destination storage means, and an emission direction detected by the direction detection means, and A program that causes a display control unit to display an image including a guide mark indicating the guide direction calculated by the guide direction calculation unit on the display unit.

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