Display systems, electronic devices, and lighting systems.

Abstract

DEPCT6324 / 09 / 2562 To provide a display system such as smartphones, game consoles, personal computers, Or liquid crystal televisions, which include light-emitting components that project light of a specific wavelength. To the user, the problem described above was resolved by the display system (1) which included parts. The first emitting part (6) which emits light used for image display, the second emitting part (3). that is irradiated (7) within the wavelength range of 360 nanometers to 400 nanometers, that includes that value, To the user, and the control unit (10) that controls the projection of light (7) from the second light-emitting part. (3)At this time, the second emitting element (3) may be a single emitting element which is integrated with The first emitting element (6) or an emitting element which is arranged separately from the emitting element. The first (6) when placed separately from the first (6) emitting part, the second (3) emitting part. It is intended to be placed on the surrounding frame (4) of the display screen (2), on the display screen (2), or As an accessory (5) ----------------------------------------------------------- DEPCT63 To provide a display system such as smartphones, game consoles, personal computers, Or liquid crystal televisions, which include light-emitting components that project light of a specific wavelength. The user's problem described above was resolved by the display system (1) which included parts. The first emitting part (6) which emits light used for image display, the second emitting part (3). Shining light (7) within the wavelength range of 360 nanometers to 400 nanometers, including that value, to The user, and the control unit (10) that controls the projection of light (7) from the second light-emitting part (3). At this point, the second (3) emitting element may be a single emitting element which is integrated with the first element. The first emitting part (6) or an emitting component which is arranged separately from the first emitting part (6). When placed separately from the first luminescent component (6), the second luminescent component (3) is desirable. To be assigned to the surrounding frame (4) of the display screen (2), in the display screen (2), or as It is an accessory (5) -----------------------------------------------------------

Description

Display systems, electronic equipment, and lighting systems

[0001] The present invention relates to a display system, etc., equipped with an light-emitting element that emits light of a specific wavelength.

[0002] Various wavelengths of light are present in our living environment. It has been reported that such light affects the human body and mind. For example, Non-Patent Document 1 reports that exposure to sunlight improves the body clock. Non-Patent Document 2 also reports that light emitted from LED lighting and liquid crystal displays using LEDs as backlights, which are present in modern living environments, has a significant impact on the body and mind.

[0003] Several studies have reported on the effects of light on the eyes. For example, Non-Patent Documents 3 and 4 report that the eyes can suffer various types of damage from exposure to ultraviolet (UV) light. Therefore, many eyeglasses and contact lenses that block as much UV light as possible are commercially available to minimize the exposure of the eyes to potentially damaging UV rays.

[0004] Furthermore, Non-Patent Document 5 describes how outdoor activities under sunlight are related to the suppression of myopia. In addition, Patent Document 1 and Non-Patent Document 7 propose that light of specific wavelengths is effective in preventing myopia. Such means of preventing the onset of myopia or slowing its progression are in high demand in recent years, as the global population with myopia continues to increase.

[0005] Hatori, M., Tsubota, K., Anti-aging Medicine - Journal of the Japanese Society for Anti-Aging Medicine, Vol. 11, No. 3, 065(385)-072(392), (2015). Tsubota, K., "The Threat of Blue Light to the Body Clock," Shueisha, November 20, 2013. Saito et. al., Jpn Ophthalmol, 54, pp. 486-493 (2010). Per G. Soderberg, Progress in Biophysics and Molecular Biology, 107, pp. 389-392 (2011). Ian Morgan, Environmental Health Perspectives, Vol.122, No.1, Jan., (2014).Lisa A.Jones, Loraine T.Sinnott, Donald O.Mutti, Gladys L.Mitchell, Melvin L.Moeschberger, and Karla Zadnik, Investigative Ophthalmology & Visual Science, Vol. 48, No. 8, Aug., (2007). Hidemasa Torii et al., EBioMedicine, “DOI: http: / / dx.doi.org / 10.1016 / j.ebiom.2016.12.007”.

[0006] WO2015 / 186723 A1

[0007] As described in Non-Patent Documents 1 and 2, the inventors have reported that light affects the body and mind. Conventionally, the light reception conditions are simple, such as receiving sunlight outdoors and artificial light indoors.

[0008] However, with the recent proliferation of smartphones, game consoles, personal computers, LCD TVs, and LED lighting, living and working environments are changing, and the wavelengths of light that people receive are becoming specific (limited), raising concerns that this may have various effects on the body and mind, potentially leading to a variety of problems that did not occur before.

[0009] Furthermore, as described in Patent Document 1 and Non-Patent Document 7, in the course of research on suppressing the onset and progression of myopia, the present inventors have found that exposure to sunlight is effective in suppressing the onset and progression of myopia, and that it may be possible to suppress the onset and progression of myopia by irradiating the eyeball with light in the wavelength range of 360 nm to 400 nm, among the wide range of wavelengths contained in sunlight, and have proposed a novel myopia prevention article (see Patent Document 1).

[0010] However, since smartphones and similar devices constantly emit light (referred to as image display light) to display images (including videos) during use, this image display light must be taken into consideration.

[0011] The present invention has been made to solve the above problems, and its objective is to provide a display system having an image display light-emitting element that emits light used for displaying images, which irradiates the user's eyes with light of a specific wavelength that is lacking in modern lifestyles, thereby suppressing the adverse effects caused by various types of light and providing a display system that has a beneficial effect on the body.

[0012] The display system according to the present invention comprises a first light-emitting element that emits display light used for displaying an image, a second light-emitting element that irradiates a first special light in the wavelength range of 360 nm to 400 nm toward the user, and a control device that controls the irradiation of the first special light from the second light-emitting element.

[0013] This configuration allows light of a specific wavelength, which is often lacking in modern lifestyles, to be directed towards the user's eyes. This can promote positive effects on the eyes, such as suppressing the onset or progression of myopia. Furthermore, depending on the usage environment, it is possible to intentionally suppress the light of a specific wavelength from the display light emitted from the first light-emitting element and direct it towards the user's eyes. This allows for control of the light emitted from the first light-emitting element to suppress any adverse effects that may occur from the light received by the eyes.

[0014] According to the present invention, it is possible to provide a display system, etc., that can irradiate the user's eyes with light of a specific wavelength that is lacking in modern lifestyles, thereby suppressing the adverse effects caused by various types of light and providing beneficial effects on the body.

[0015] This is an example of a first embodiment of the present invention in which a second light-emitting element is provided together with a first light-emitting element on the display screen of a smartphone. This is an example of a second light-emitting element provided on the frame of a smartphone in the first embodiment. This is an example of a second light-emitting element being attached to the frame of a smartphone as an accessory in the first embodiment. This is an example of a second light-emitting element being attached to the frame of a personal computer as an accessory in the first embodiment. This is an example of a configuration in which the first light-emitting element and the second light-emitting element are integrated in the first embodiment. This is another example of a configuration in which the first light-emitting element and the second light-emitting element are integrated in the first embodiment. This is a schematic diagram showing an example of a configuration for measuring the usage environment in the first embodiment. This is a schematic diagram of emission control of specific wavelength light in the first embodiment. This is an example of a light spectrum measured in an indoor environment irradiated by a fluorescent lamp. This is an example of a light spectrum measured in an outdoor environment during the daytime. This is an example of a light spectrum emitted from a smartphone. This is an example of a light spectrum emitted from a display device of the first embodiment, in the range of 360 nm to 400 nm. This is an example of a light spectrum emitted from a display device of the first embodiment, in the range of 460 nm ± 20 nm. This is the spectrum of light emitted from a light-emitting element that integrates a first light-emitting element and a second light-emitting element in the first embodiment. This is a system configuration diagram showing an example of a communication system in the second embodiment of the present application. This is a block diagram showing an example of the configuration of a display device in the second embodiment. This is a flowchart showing an example of the operation of the VL irradiation control process performed in the communication terminal device of the second embodiment.

[0016] (1) The display system according to the present invention has a configuration comprising: a first light-emitting element that emits display light used for displaying an image; a second light-emitting element that irradiates a first special light in the wavelength range of 360 nm to 400 nm toward the user; and a control device that controls the irradiation of the first special light from the second light-emitting element.

[0017] This configuration allows light of a specific wavelength, which is lacking in modern lifestyles, to be directed towards the user's eyes, thereby promoting positive effects from the light received by the eyes, such as suppressing the onset or progression of myopia. Furthermore, the present invention can intentionally suppress the light of a specific wavelength from the display light emitted from the first light-emitting element and direct it towards the user's eyes. In addition, the present invention can control the light emitted from the first light-emitting element according to the usage environment to suppress any adverse effects that may occur due to the light received by the eyes.

[0018] (2) In the display system according to the present invention, the second light-emitting element is configured to be either a single light-emitting element integrated with the first light-emitting element, or a light-emitting element provided separately from the first light-emitting element.

[0019] (3) In the display system according to the present invention, the second light-emitting element is configured such that, when the second light-emitting element is provided separately from the first light-emitting element, (A) it is provided on the peripheral frame of the display screen, (B) it is provided within the display screen, or (C) it is provided as an accessory.

[0020] This configuration allows the second light-emitting element to be provided in the display device in various forms.

[0021] (4) The display system according to the present invention further comprises detection means for detecting at least one of the following: (A) the position of the user's eyes, (B) the state of opening and closing of the eyelids, (C) the distance to the eyes, and (D) the direction of the user's gaze, wherein the control device controls the irradiation of the first special light to the user's eyes based on at least one of the following detected by the detection means: the position of the eyes, the state of opening and closing of the eyelids, the distance to the eyes, and the direction of the user's gaze.

[0022] With this configuration, light within the wavelength range of 360 nm or more and 400 nm or less can be appropriately irradiated onto the eye. Note that the control device includes a direction variable device that can vary the irradiation direction of the second light-emitting element or the like.

[0023] (5) In the display system according to the present invention, when the control device determines based on the detected line-of-sight direction that the line of sight of the user is directed toward the display screen on which the image is displayed, the control device has a configuration in which the second light-emitting element is irradiated with the first special light.

[0024] With this configuration, the first special light can be surely irradiated onto the eye of the user, and it is possible to prevent the first special light from being wastedly irradiated when the user is not looking at the display image, thereby realizing power saving.

[0025] (6) In the display system according to the present invention, the control device sets at least one or more control items among the irradiation time, irradiation period, and irradiance of the first special light emitted from the second light-emitting element, and controls the irradiation of the first special light based on the set control items.

[0026] With this configuration, since the irradiation time and irradiance of the light emitted from the second light-emitting element can be set in units of time or the like, it is possible to irradiate the eye with light of a specific wavelength at an arbitrary time and arbitrary intensity according to the usage mode of each user.

[0027] (7) The display system according to the present invention further includes a first optical sensor that measures the state of the first special light at the position of the user's eye, and the control device controls the irradiation of the first special light emitted from the second light-emitting element according to the measurement result of the first optical sensor.

[0028] With this configuration, the state of the light at the position of the eye can be measured by the optical sensor, and the output of the light emitted from the second light-emitting element can be controlled according to the measurement result. Therefore, for example, it is possible to output light according to the usage environment without setting in units of time or units of a day.

[0029] (8) The display system according to the present invention further comprises a second light sensor that measures the state of light at the position of the user's eyes in the environment in which the user is placed, and the control device controls the irradiation of a first special light emitted from the second light-emitting element according to the measurement result of the second light sensor, and adjusts the output of the display light emitted from the first light-emitting element according to the first special light emitted from the second light-emitting element.

[0030] This configuration allows the user to be illuminated with the desired light in their environment through the first special light, light in the user's surrounding environment (for example, sunlight or light emitted from lighting fixtures), and indicator light.

[0031] (9) In the display system according to the present invention, the control device controls the irradiation of the first special light emitted from the second light-emitting element according to the measurement result of the first light sensor, and adjusts the output of the display light emitted from the first light-emitting element according to the first special light emitted from the second light-emitting element.

[0032] This configuration allows the output of light emitted from the second light-emitting element to be controlled in response to the first special light, so that the light output can be adjusted according to the usage environment without having to set it on an hourly or daily basis, for example.

[0033] (10) The display system according to the present invention further comprises a management means for acquiring irradiation data relating to at least one control item among the irradiation time, irradiation period, and irradiance of the first special light irradiated from the second light-emitting element, and storing the acquired irradiation data in a first storage means so that it can be used for a predetermined activity of the user.

[0034] This configuration allows for the management of the user's irradiation history, enabling the linking of the irradiation history to specific user activities such as vision test results and lifestyle rhythm management, and consequently improving the convenience related to the user's activities.

[0035] (11) In the display system according to the present invention, the management means has the following configuration: it acquires measurement data showing the measurement result of a first special light measured at the position of the user's eyes, stores the acquired irradiation data and the measurement data in the first storage means in association with time, and supplies the stored irradiation data and measurement data to an external device.

[0036] This configuration allows the data from the first special light emitted from the second light-emitting element to be managed according to the operating environment.

[0037] (12) In the display system according to the present invention, the control device has a configuration that acquires data indicating a given user activity within a predetermined period in the past as personal data, and controls the irradiation of the first special light from the second light-emitting element based on the acquired personal data.

[0038] This configuration allows, for example, the system to calculate the deficit in the amount of solar energy the user has received over the past 24 hours, have the user compensate for that deficit, and accurately illuminate the second light-emitting element according to the required amount of energy.

[0039] (13) The display system according to the present invention further comprises a second recording means for recording the personal data, and the control device has a configuration for acquiring the personal data from the second recording means.

[0040] This configuration allows various processes to be performed using pre-recorded personal data, thus speeding up processing.

[0041] (14) In the display system according to the present invention, the control device acquires weather information indicating the weather during daytime hours, identifies the period during which the user was outdoors during daytime hours in a predetermined period in the past based on the acquired personal data, and controls the irradiation of the first special light from the second light-emitting element based on the identified outdoor location period and the acquired weather information.

[0042] This configuration allows the output of the first special light to be controlled according to the weather conditions in the user's location. Therefore, even if the illuminance of sunlight reaching the ground changes due to weather conditions, the user's eyes can be reliably and accurately irradiated with the required amount of the first special light.

[0043] (15) In the display system according to the present invention, the control device has the following configuration: it obtains in advance the average value of the spectral irradiance observed outdoors for the first special light for each weather condition; it calculates the amount of energy of the first special light irradiated to the user's eyes during the day based on the obtained average value, the specified period of time spent outdoors, and the obtained weather information; it determines the illuminance and irradiation period of the first special light to be irradiated from the second light-emitting element based on the calculated amount of energy and the ideal irradiation energy amount obtained in advance; and it irradiates the first special light from the second light-emitting element based on the determined illuminance and irradiation period.

[0044] This configuration allows for highly accurate identification of the amount of energy contained in the first special light contained in sunlight that the user is exposed to during outdoor activities, and enables the second light-emitting element to irradiate the user's eyes with the deficiency.

[0045] (16) In the display system according to the present invention, the irradiance of the light emitted from the second light-emitting element is 10 W / m ２ It has the following configuration:

[0046] This configuration can delay the onset of myopia or suppress its progression.

[0047] (17) The display system according to the present invention further comprises a third light-emitting element that irradiates a second special light in the wavelength range of 460 nm ± 20 nm toward the user, and has a configuration that controls the irradiation of the second special light from the third light-emitting element.

[0048] This configuration allows for the irradiation of a second special light within a predetermined wavelength range according to the environment, making it particularly effective in regulating circadian rhythms and thus influencing the user's physical and mental regulation, adjustment, prevention, and treatment.

[0049] (18) In the display system according to the present invention, the third light-emitting element is included in the first light-emitting element.

[0050] This configuration allows the third light-emitting element to be used for image display while simultaneously irradiating the user with a controlled irradiance. Alternatively, as described in the previous section, it may be provided as an independent light-emitting element.

[0051] (19) In the display system according to the present invention, the irradiance of the second special light emitted from the third light-emitting element is 1 W / m ２ It has the following configuration:

[0052] This configuration allows for the regulation of circadian rhythms.

[0053] (20) The display system according to the present invention has a configuration that limits at least one or both of the light in the range of 435 nm ± 10 nm and the light in the range of 505 nm ± 10 nm.

[0054] This configuration allows the control device to limit light around 430 nm and 505 nm, to which the retina is highly sensitive.

[0055] (21) The electronic device according to the present invention comprises a smartphone, a game console, a personal computer, an LCD television, smart glasses, and other display systems having each of the above-described configurations.

[0056] This configuration allows various electronic devices to emit light of the specific wavelengths mentioned above, which is lacking in modern lifestyles, directly into the user's eyes. As a result, the light received by the eyes can have positive effects, such as suppressing the onset or progression of myopia.

[0057] (22) The lighting system according to the present invention comprises a light source composed of a light-emitting element that irradiates a first special light in the wavelength range of 360 nm to 400 nm and a fluorescent material covering the periphery of the light-emitting element, and a control device that controls the light source, wherein the control device acquires personal data indicating data of a given activity of the user, and controls the irradiation of the first special light from the light-emitting element based on the acquired personal data.

[0058] This configuration allows for the irradiation of the user's eyes with light of the specific wavelengths mentioned above, which are often lacking in modern lifestyles, using devices such as lighting equipment. This can promote positive effects on the eyes, such as suppressing the onset or progression of myopia.

[0059] Furthermore, the present invention can also intentionally suppress light of a specific wavelength from the display light emitted from the first light-emitting element and direct it towards the user's eyes. Depending on the usage environment, it is possible to control the light emitted from the first light-emitting element to suppress any adverse effects that may occur due to the light received by the eyes.

[0060] Embodiments of the present invention will be described below. The embodiments described below are not intended to unduly limit the scope of the present invention as defined in the claims. Furthermore, not all configurations described in the embodiments below are necessarily essential components of the present invention.

[0061] [1] First Embodiment [1.1] Overview and Principle: A first embodiment of the display device of the present invention will be described with reference to Figures 1 to 6.

[0062] Figure 1 shows an example in which a second light-emitting element is provided together with a first light-emitting element within the display screen of a smartphone, and Figure 2 shows an example of a second light-emitting element provided on the frame of a smartphone. Figure 3 shows an example in which a second light-emitting element is attached to the frame of a smartphone as an accessory, and Figure 4 shows an example in which a second light-emitting element is attached to the frame of a personal computer as an accessory. Figure 5 shows an example of a configuration in which the first light-emitting element and the second light-emitting element are integrated, and Figure 6 shows another example of a configuration in which the first light-emitting element and the second light-emitting element are integrated.

[0063] The display device 1 of this embodiment is, for example, a display device 1 having a first light-emitting element 6 that emits light used for image display, as shown in Figures 1 to 6. In particular, the display device 1 comprises a first light-emitting element 6 that emits light used for image display, a second light-emitting element 3 that irradiates light 7 in the wavelength range of 360 nm to 400 nm toward the user 50, and a control device 10 that controls the irradiation of light 7 from the second light-emitting element 3.

[0064] The display device 1 includes a first light-emitting element 6 that emits light used for general image display, a second light-emitting element 3 that irradiates light 7 within the above wavelength range toward the user 50, and a control device 10 that controls the irradiation of light 7 from the second light-emitting element 3. Thus, light 7 within the above wavelength range can be irradiated toward the user 50.

[0065] In modern society, the dramatic proliferation of information and communication devices such as smartphones has changed our living and working environments. We spend much of our daily lives facing display devices such as smartphones, game consoles, personal computers, and televisions, watching or working with them. These information and communication devices and display devices are now being used for long periods by people of all ages, from children to the elderly, and there is a risk that various problems that did not occur before may arise. For example, the eye detects color using cone cells, a type of photoreceptor cell in the retina, and recognizes the movement of objects based on the temporal changes in color.

[0066] The display device 1 of this embodiment can promote beneficial effects on the eyes by irradiating them with light of a specific wavelength, such as suppressing the onset or progression of myopia. In particular, it is effective in solving problems that may arise in modern society, where living and working environments have changed due to the dramatic spread of smartphones and the like, such as the onset and progression of myopia. Furthermore, it can be effective in regulating, adjusting, preventing, and treating the physical and mental state of the user 50.

[0067] For example, considering the modern lifestyle in which people spend long hours using smartphones and other devices, mainly indoors, irradiating the eyes 51 with light between 360 nm and 400 nm (violet light or abbreviated as VL) 7 when necessary can suppress the onset and progression of myopia. While VL 7 is present in sunlight, modern people, surrounded by various products with UV protection and UV-cutting functions, can be said to be deficient in VL 7. Furthermore, the amount of time children spend playing outdoors has been decreasing year by year. Therefore, irradiating the eyes 51 with VL 7 according to the living light environment can suppress the onset and progression of myopia.

[0068] The eye 51 not only perceives color but also performs non-visual tasks. For example, melanopsin-containing retinal ganglion cells (mRGCs) are known to act most strongly with light in the range of 460 nm ± 20 nm and to influence circadian rhythms.

[0069] Furthermore, while certain types of light in sunlight regulate a person's internal clock, if such specific wavelengths of light are emitted indefinitely from light-emitting elements like smartphones, the person will be continuously exposed to them even indoors and at night. This could disrupt the internal clock and significantly affect a person's physical and mental health. Therefore, if it were possible to expose the eyes to light containing 460 nm (blue light or BL) within the range of 460 nm ± 20 nm during the daytime when sunlight should be present, it would be possible to regulate the circadian rhythm without disrupting it.

[0070] The display device 1 of this embodiment is capable of irradiating the user 50's eyes 51 with VL7 of a specific wavelength that can be effective in regulating, adjusting, preventing, and treating the user's body and mind. The "circadian rhythm" (also called the internal clock) is a physiological phenomenon that fluctuates in a cycle of approximately 24 hours. It is believed that when BL enters the eyes while outdoors during the day, the circadian rhythm stabilizes, appetite, drowsiness, sleep, etc., stress is relieved, and physical condition is maintained.

[0071] [1.2] Configuration: Next, the configuration of the display device of this embodiment will be described using Figures 9 to 13. Figure 9 is an example of the spectrum of sunlight measured in an indoor environment irradiated by a fluorescent lamp, and Figure 10 is an example of the spectrum of light measured in an outdoor environment during the daytime. Figure 11 is an example of the spectrum of light emitted from a smartphone, and Figures 12A and 12B are examples of the spectrum of light emitted from the display device of this embodiment. Figure 13 is an example of the spectrum of light emitted from a light-emitting element that integrates the first light-emitting element and the second light-emitting element of this embodiment.

[0072] <Display Device> The display device 1 in this embodiment is not particularly limited as long as it is a device equipped with a display screen 2 for displaying images. For example, the display device 1 includes, for example, smartphones, game consoles, personal computers, liquid crystal televisions, and other display devices (for example, displays, monitors, etc. used for various purposes).

[0073] In recent years, with the remarkable proliferation of mobile devices such as game consoles and smartphones, as well as personal computers, the light emitted from these devices (i.e., the display device 1) in this embodiment is shone on the eyes for extended periods. In particular, since the display device 1 in this embodiment can control the emission wavelength according to lifestyle and usage conditions, it can irradiate the user's eyes with light of the specific wavelength mentioned above, which is lacking in modern lifestyles.

[0074] <First Light-Emitting Element> The first light-emitting element 6 is a light-emitting element that emits light used for displaying images. This first light-emitting element is known as a light-emitting element for displaying images on a display screen 2 of a smartphone or the like, and is not particularly limited as long as it is a known light-emitting element. Basically, the first light-emitting element 6 has various components such as color filters for the three primary colors R (red), G (green), and B (blue), liquid crystal, alignment film, and electrodes, and is an element that emits the three primary colors as a whole.

[0075] Furthermore, the display device 1 of this embodiment has a configuration that allows for the arbitrary control of the color emission of each color in the first light-emitting element 6 to display various colors, and also to display images and videos.

[0076] Furthermore, the display device 1 has a configuration that allows it to produce pseudo-white light similar to sunlight through predetermined pixel control. However, the light emitted by the first light-emitting element 6 contains almost no VL7 in the range of 360 nm to 400 nm.

[0077] <Second Light-Emitting Element> The second light-emitting element 3 is a light-emitting element that emits light (VL) 7 in the wavelength range of 360 nm to 400 nm toward the user 50. According to the spectral irradiance of sunlight illustrated in Figure 10, for example, the measurement data at 12:00 on a clear day in Tokyo is 6.8 W / m² in the southward horizontal direction. ２ It is present in small amounts, and if you are outdoors during the day, VL can enter your eyes.

[0078] On the other hand, as illustrated in Figure 9, except in cases where incandescent bulbs or halogen lamps are installed, there are basically no lighting fixtures that emit VL indoors. Furthermore, in recent years, people have been spending more time indoors, resulting in a significant shortage of VL. The display device 1 of this application has a configuration that allows it to irradiate the user 50 with the insufficient VL. Therefore, the display device 1 of this embodiment can suppress the onset and progression of myopia. It should be noted that Non-Patent Literature 6 states that outdoor activity of 14 hours or more per week significantly reduces the probability of developing myopia, but the wavelength component that is effective for this has not been identified.

[0079] Considering this point, the integral value of VL in the range of 360 nm to 400 nm at the surface of the eyeball is 3.1 W / m². ２ Assuming a certain level of irradiance, and being exposed to that VL for two hours a day, the amount of light the eyes receive per day would be 23,320 J / m³. ２ This is how it is calculated. If the exposure time to VL outdoors is long, the irradiance of VL will be 0.5 W / m². ２ While values ​​less than this would also be acceptable, here the irradiance is defined as the value when the light is received for approximately two hours a day.

[0080] Regarding light irradiance, if the spectral irradiance of sunlight is measured and calculated based on that irradiance, for example, the VL intensity (irradiance) of sunlight between 360 nm and 400 nm is 28.0 W / m² according to calculations based on international standard data (AM1.5). ２This value indicates the measurement value when the detection probe of the illuminance meter is directed towards the sun. As an actual measurement value, for example, the intensity (irradiance) of VL between 360 nm and 400 nm in sunlight at noon (12:00 am) on June 7, 2015, in the northward horizontal direction was 1.4 W / m ２ It was. In particular, the dose amount (energy amount) (J / m ２ ) is represented by irradiance (W / m ２ )× time (seconds).

[0081] (Irradiance of VL) The irradiance of VL varies depending on the usage environment such as a smartphone. For example, when using a smartphone or the like outdoors during the day, regardless of whether it is sunny or cloudy, there is sufficient VL of about 1.4 (northward horizontal) to 6.8 (southward horizontal) W / m from sunlight in the environment. Therefore, it is considered that irradiation of VL from a smartphone or the like is unnecessary. In particular, since this measurement value is a temporary value on a sunny day, when sunlight is blocked by clouds, the measurement value of VL decreases to near "0". For this reason, in such a case, it is desirable to irradiate VL from a smartphone as necessary. ２ In this case, for example, it is desirable to measure the irradiance of VL in the vicinity of the user or near the eyes using a sensor described later, and if necessary, notify the user by image, character string, or voice that the ambient VL value is low. When the user performs a predetermined input operation, it is desirable to cause the second light-emitting element 3 to emit light and irradiate the user's eyes with VL.

[0082] When using a smartphone or the like indoors in an office or home during the day, since there is not enough VL in the room, it is desirable to irradiate VL from a smartphone or the like. At this time, it is preferable that the irradiance of the VL to be irradiated is controlled according to the VL illuminance of the usage environment. For example, indoors, there is basically no VL radiation from lighting equipment, so it is preferable that a smartphone or the like can irradiate VL of about 3.1 W / m close to sunlight.

[0083] When using a smartphone or the like indoors in an office or home during the day, since there is not enough VL in the room, it is desirable to irradiate VL from a smartphone or the like. At this time, it is preferable that the irradiance of the VL to be irradiated is controlled according to the VL illuminance of the usage environment. For example, indoors, there is basically no VL radiation from lighting equipment, so it is preferable that a smartphone or the like can irradiate VL of about 3.1 W / m close to sunlight. ２ It is preferable that it is possible to irradiate VL of about this level.

[0084] The second light-emitting element 3 emits light including light in the range of 360 nm to 400 nm (VL), but it is sufficient if it mainly emits light with wavelengths within that range. "Mainly" means, for example, light within the wavelength range of 360 nm to 400 nm, for example, light close to sunlight at 3.1 W / m². ２ A certain level of irradiance is sufficient; the entire area within that range does not need to have the irradiance within the above range, or it may have the irradiance within the above range in all areas.

[0085] Furthermore, the light may emit wavelengths within the entire range of 360 nm to 400 nm, or, for example, as shown in Figure 12(A), it may emit light within the range of 360 nm to 400 nm and, including the tail portion of the spectrum, light within the range of 350 nm to 410 nm, or it may emit only light within the range of 370 nm to 390 nm from the range of 360 nm to 400 nm.

[0086] In other words, any device that emits light primarily within the wavelength range of 360 nm to 400 nm is acceptable. Specific examples of such devices include, for instance, bullet-shaped LEDs (e.g., LEDs manufactured by Nichia Corporation, peak wavelength: 375 nm, e.g., NSPU510CS manufactured by Nichia Corporation) and laser diodes that emit light at specific wavelengths. However, the device is not limited to these devices. Spectral data can be measured using various devices and methods. However, in this application, data measured using the "Blue Wave" fiber multichannel spectrometer manufactured by StellarNet is used.

[0087] <Third Light-Emitting Element> The third light-emitting element is provided in the display device 1 as needed and is a light-emitting element that emits blue light (hereinafter abbreviated as "BL") in the range of 460 nm ± 20 nm. BL is blue light that acts in a way that does not disrupt the circadian rhythm. Generally, when we refer to blue light, according to the definition of the Blue Light Research Society, etc., it is said to be in the range of 380 nm to 500 nm.

[0088] According to the spectral irradiance of sunlight within that wavelength range, blue light in the range of 380 nm to 500 nm, for example, in sunlight measurements at noon (12:00 AM) on June 7, 2015, as shown in Figure 10, measured 8.7 W / m² horizontally facing north at 12:00 PM on a clear day in Tokyo. ２ It is included to a certain extent. Therefore, BL within the range of 460 nm ± 20 nm can enter the eyes from sunlight when you are outdoors during the day and regulate your circadian rhythm.

[0089] On the other hand, even when working indoors, BL is emitted from lighting equipment such as fluorescent lamps, as shown in Figure 9. For example, according to the spectral irradiance of a white fluorescent lamp installed on the ceiling of an office, it is 0.1 W / m². ２ It contains a certain amount (as described above, the value in the wavelength range of 380 nm to 500 nm, which is defined as blue light by the Blue Light Research Society, etc.). However, there is a large difference between the amount of blue light that enters the eye from sunlight and the amount that enters the eye from fluorescent lights, and the display device 1 according to the present invention can irradiate the eye with blue light to bridge that difference.

[0090] The blue light (BL) does not need to be the 380nm to 500nm blue light defined by the Blue Light Research Society, etc. In this application, it is sufficient if it emits at least light within the range of 460nm ± 20nm, which regulates the circadian rhythm. As a result, BL within the range of 460nm ± 20nm can regulate the circadian rhythm, stabilize appetite, drowsiness, sleep, etc., relieve stress, and maintain good health.

[0091] Sunlight contains light of a wide range of wavelengths, as illustrated in Figure 10. Therefore, irradiating the eyes with light similar to sunlight, regardless of day or night, and without paying attention to its intensity or duration, solely for the purpose of suppressing the onset and progression of myopia, will expose the eyes to light of wavelengths that disrupt the circadian rhythm and light that damages the retina. For this reason, irradiating the eyes with light similar to sunlight, regardless of day or night, and without paying attention to its intensity or duration, should be avoided as much as possible.

[0092] Furthermore, compared to the outdoors, as shown in Figure 9, there are basically no VLs in the range of 360 nm to 400 nm indoors.

[0093] The third light-emitting element emits blue light (BL) within the range of 460 nm ± 20 nm, which acts in a way that does not disrupt the circadian rhythm. When using smartphones or other devices indoors for extended periods, shining light within the 460 nm ± 20 nm range, which is insufficient during the day, towards the eyes can help regulate the circadian rhythm without disruption.

[0094] Even when measuring by actually placing a measurement probe in contact with the liquid crystal display, the values ​​in the 380nm to 500nm wavelength range, which is defined as blue light by the Blue Light Research Society and others, are as shown in Figure 11, indicating that the blue light emitted from smartphones is 1 W / m². ２ Only a small amount is displayed. However, this value is the measurement taken when the distance from the display screen is approximately "0".

[0095] In daily life, the light environment can be good or bad, but by controlling the light exposure to the eyes to be within the range of 460 nm or above ±20 nm, depending on the daytime light environment, the circadian rhythm can be regulated, which can have a positive effect on the eyes and body.

[0096] Furthermore, the third light-emitting element also primarily irradiates with BL within the range of 460 nm ± 20 nm. This "primarily" means, for example, within the wavelength range of 460 nm ± 20 nm, for example, 8.7 W / m, which is close to sunlight. ２ It is sufficient to have an irradiance of a certain degree or less, and it is not necessary for the entire range to have an irradiance within the above range, or for all of it to have an irradiance within the above range.

[0097] Furthermore, the light may emit wavelengths within the entire range of 460 nm ± 20 nm, or, for example, as shown in Figure 12(B), it may emit light that includes light within the range of 460 nm ± 20 nm and, including the tail portion of the spectrum, light in the range of approximately 420 nm to 540 nm, or it may emit light only within a narrow range of, for example, 465 nm to 475 nm from the range of 440 nm to 480 nm.

[0098] In other words, any device that "primarily" emits light in the wavelength range of 440 nm to 480 nm is acceptable. Specific examples of such devices include LEDs (for example, LEDs manufactured by Nichia Corporation, with a peak wavelength of 468 nm, such as the NSC455AT manufactured by Nichia Industries, Ltd.) and laser diodes that emit light at specific wavelengths. However, the device is not limited to these devices.

[0099] The above-mentioned "1 W / m within the wavelength range of 460 nm ± 20 nm or less" ２ "Approximate irradiance" is roughly equivalent to a north-facing value of approximately 8.7 W / m² in the range of 380 nm to 500 nm in sunlight. ２ Therefore, within the wavelength range of 460 nm to 480 nm, the power is approximately 1 W / m ２ It is based on the degree of something.

[0100] (Irradiance of BL) The irradiance of BL varies depending on the usage environment of smartphones, etc. For example, when using a smartphone outdoors during the daytime, as shown in Figure 10, it ranges from 8.7 (north-facing horizontal) to 43.2 (south-facing horizontal) W / m, whether it is sunny or cloudy. ２ Sufficient BL (bulb) is present in the usage environment. Therefore, BL irradiation from smartphones, etc., is unnecessary.

[0101] On the other hand, when using smartphones, etc., indoors during the day in an office or home, there is not enough light beam (BL) in the room. Therefore, it is desirable to emit BL from the smartphone, etc. In this case, it is preferable that the irradiance of the emitted BL be controlled according to the illuminance of the BL in the usage environment. For example, the irradiance of BL from lighting equipment (fluorescent lamps) in an office is small, for example, 0.1 W / m². ２ It is only irradiated to a certain extent.

[0102] In particular, the measured values ​​at a distance L of 0 to 30 cm from a typical smartphone display screen (values ​​in the 380-500 nm wavelength range of blue light as defined by the Blue Light Research Society, etc.) were 0.05 to 1 W / m². ２ Only a certain level of BL (bulb) is being emitted. Therefore, to ensure usability in any environment, smartphones are set to 10 W / m², matching sunlight. ２It is preferable that the system can irradiate with BL up to a certain degree.

[0103] The third light-emitting element should emit light containing BL within the range of 460 nm ± 20 nm, and preferably mainly emit light in that wavelength range. Here, "mainly" means, for example, in the case of BL within the range of 460 nm ± 20 nm, to match sunlight within the range of 460 nm ± 20 nm, 1 W / m ２ A certain level of irradiance is sufficient. Not all areas within that range need to have irradiance within that range, or all areas within that range may have irradiance within that range.

[0104] Specific examples of these elements include LEDs having a peak within the aforementioned wavelength range, and laser diodes that emit light at a specific wavelength within the aforementioned wavelength range. However, the elements are not limited to these.

[0105] <Installation configuration of light-emitting element> The first light-emitting element is usually installed within the pixels of a display and typically has RGB color filters, liquid crystal, alignment film, electrodes, etc. as components, and as a whole has an element structure that emits the three primary colors of light.

[0106] On the other hand, the second light-emitting element, or the second and third light-emitting elements, can be installed in various forms as shown in Figures 1 to 4. In this application, "second light-emitting element, etc." is used to mean that it may include the third light-emitting element as well as the second light-emitting element, and "second light-emitting element" is used to mean only the second light-emitting element.

[0107] The example in Figure 1 shows a first light-emitting element that emits the RGB primary colors in the display screen of a smartphone, etc., with the addition of a second light-emitting element that emits VL (very bright light). In this case, it is desirable that the VL light-emitting element be provided capable of emitting a sufficient amount of light. In addition, while BL (blue light) can be emitted to some extent by the B (blue) light-emitting element, in cases where the irradiance is low, as in the case of a typical smartphone, it is desirable to separately provide an accessory for a third light-emitting element, similar to the accessory for the second light-emitting element shown in Figure 3. It is desirable to provide such a third light-emitting element to supplement the amount of BL light from the liquid crystal display of the smartphone.

[0108] The example in Figure 2 shows a smartphone or the like with a second light-emitting element attached to the main frame, while the example in Figure 3 shows a smartphone or the like with a second light-emitting element attached as an accessory to the main frame.

[0109] The example in Figure 4 shows a second light-emitting element attached as an accessory to the frame of a personal computer's display unit. However, the installation configuration is not limited to these examples; any configuration that performs the same function is acceptable.

[0110] The second light-emitting element may be a single light-emitting element integrated with the first light-emitting element, or it may be two or more light-emitting elements provided separately from the first light-emitting element.

[0111] In the installation configuration shown in Figure 1, although they are separate pixels, the first light-emitting element that emits the three primary colors of RGB is integrated with the second light-emitting element, which is the VL light-emitting element.

[0112] In the installation configuration shown in Figure 2, the LEDs or laser diodes that emit VL light are mounted as separate components on the main frame of a smartphone or similar device.

[0113] In the installation configurations shown in Figures 3 and 4, LEDs or laser diodes that emit VL light are attached as accessories to the frame of a smartphone or similar device. An example of an accessory form is a laser pointer.

[0114] Figures 5 and 6 show examples of an integrated configuration of the first light-emitting element and the second light-emitting element. The light-emitting element shown in Figure 5 has a light-emitting element that emits white light overall when excitation light with a wavelength in the range of 360 nm to 400 nm causes an RGB-emitting phosphor to light up.

[0115] This light-emitting device is an example composed of an excitation light-emitting section (LED) that emits excitation light with a wavelength in the range of 360 nm to 400 nm, and R (red), G (green), and B (blue) phosphors provided to cover the excitation light-emitting section.

[0116] As shown in the diagram, some of the light (excitation light) with wavelengths between 360 nm and 400 nm is transmitted through the phosphor. Such a light-emitting element appears white as a whole. That is, it can be treated as an integrated unit, with the first and second light-emitting elements being the same wavelength component.

[0117] Figure 13 shows an example of the light spectrum emitted from the integrated light-emitting element shown in Figure 5. It can be seen that excitation light with wavelengths between 360 nm and 400 nm is emitted. The light above 400 nm is the spectrum of light emitted from the excited RGB phosphor.

[0118] The light-emitting element shown in Figure 6 comprises a second light-emitting element that emits light with a wavelength in the range of 360 nm to 400 nm, and a first light-emitting element that emits the three primary colors of RGB. This light-emitting element is an example composed of a light-emitting section that emits light with a wavelength in the range of 360 nm to 400 nm, and R (red), G (green), and B (blue) light-emitting sections (LEDs). Such a light-emitting element can also be used as a light-emitting element by integrating the first light-emitting element, the second light-emitting element, etc.

[0119] (Irradiation method) It is preferable that VL is irradiated toward the eyeball, and it is also preferable that BL is irradiated toward the eyeball. In this application, when "VL etc." is used, it is used to mean that BL may be included in addition to VL, and when "VL" is used, it is used to mean only VL. In order to direct it toward the eyeball, it is preferable that the second light-emitting element etc. is provided facing toward the eyeball.

[0120] When viewing images or videos displayed on a display device such as a smartphone, the eye 51 is often located approximately in the direction normal to the center of the display screen 2. Therefore, it is desirable that the second light-emitting element, etc., installed in the above-described configuration, be positioned so that VL or the like is irradiated in that direction.

[0121] As shown in Figure 7, the distance L from the display screen 2 of a smartphone or the like to the eye 51 is (1) about 100 mm to 500 mm in the case of a smartphone, (2) about 300 mm to 700 mm in the case of a personal computer, and (3) about 800 mm to 5000 mm in the case of a television, depending on its size. It is preferable to design the irradiation direction and irradiance of VL, etc., taking this distance L into consideration. It is also possible to automatically measure the distance L from the display screen 2 to the eye 51 and automatically adjust the irradiation direction of VL, etc., from the light-emitting element.

[0122] Specifically, for example, a camera or image sensor attached to or mounted on a smartphone or personal computer can automatically measure the distance L and position to the eye, and based on the measurement results, it is possible to automatically adjust the illumination direction and light intensity of the light-emitting element.

[0123] For measuring the distance L from the display screen 2 to the eye 51, measuring devices such as a CMOS sensor, CCD sensor, or infrared sensor can be applied.

[0124] The irradiance (VL) and dose (also called light energy) entering the eye vary depending on the distance L to the eye. By measuring this distance L, it is possible to irradiate the eye with a desired irradiance. In particular, if the distance L is below a predetermined threshold (e.g., 20 cm), the system may be configured to issue a warning such as "The screen is too close, please move it further away" using an image, text, or sound.

[0125] Furthermore, it is possible to automatically determine and measure whether the eyes are facing the screen, as well as the number of blinks and the time it takes to blink. By doing so, it is possible to accurately accumulate the irradiance, such as VL, reaching the eyes.

[0126] By measuring the actual time the eye is exposed to light, it is possible to pre-set the dose and terminate the irradiation when the set dose is reached.

[0127] Thus, it is preferable to provide a measuring device (also called a sensor) that measures the distance L from the user's eyes and / or the direction of the eyes, thereby correcting the irradiance according to the distance L and direction. As a result, it becomes possible to irradiate the necessary amount of insufficient light in a manner that is more in line with actual usage.

[0128] <Irradiation control according to the usage environment> (Usage environment) Irradiation of VL, etc. is controlled by the second light-emitting element, etc., according to the usage environment. The usage environment refers to the environment in which the smartphone, etc. is used, for example, whether it is outdoors or indoors, in an office or school or at home, if outdoors whether the weather is sunny, cloudy or rainy, day or night, if indoors whether it is the living room or a study room, etc.

[0129] Depending on the usage environment, it is preferable to predict or measure any excess or deficiency of VL, etc., already present in that environment and irradiate with the deficiency amount of VL, etc. If a device such as a smartphone is connected to the internet, it is also possible to obtain information about the environment (climate) at that location from the internet, store it as a log in a storage means such as memory (not shown), and reflect it in the irradiation conditions.

[0130] Furthermore, it is desirable to use a sensor to measure the illuminance of sunlight and artificial light around the user at the user's eye level, and to be able to adjust the illuminance of the display light when displaying images on the display screen according to the measurement results.

[0131] Various sensors 8 can be used to measure the operating environment. For example, GPS can be used to determine location information, making it possible to identify whether the location is clearly outdoors or clearly indoors. In addition, irradiance can be measured using a light sensor, and by combining this with information from the internet, it is possible to determine whether the location is outdoors or indoors, whether it is sunny, cloudy or rainy, and the level of illuminance in those conditions.

[0132] These sensors 8 may be integrated into the main frame of a smartphone or the like, or they may be attached to the main frame as a separate accessory.

[0133] Furthermore, by installing such sensors, the operating environment can be understood, and VL (Very Light) or similar devices can be irradiated at the desired illuminance and duration. The duration can include factors such as the continuous irradiation time, the timing of irradiation, and the accumulated irradiation time.

[0134] By understanding the usage environment, it is possible to irradiate the environment with the required irradiance to compensate for any deficiencies. For example, in a usage environment where there is a deficiency of blue light (BL) in the range of 460 nm ± 20 nm during the daytime, irradiating with BL of that wavelength at the required irradiance can suppress disruptions to the circadian rhythm. In particular, desk work indoors tends to have less BL in that wavelength range, so this deficiency can be compensated for.

[0135] (Sensors) Sensors 8 are preferably provided as needed. Examples of preferred sensors 8 include illuminance sensors that detect visible light as illuminance (lux), and specific wavelength sensing light sensors that detect irradiance of specific wavelengths (e.g., violet light or blue light).

[0136] It is acceptable to use only an illuminance sensor or only a specific wavelength detection sensor, but it is preferable to have both sensors.

[0137] If only an illuminance sensor is used, it can only distinguish between light and dark, and cannot tell whether you are outdoors (during the day) or indoors in a bright room. However, by combining an illuminance sensor with, for example, a violet light sensor, it becomes easy to distinguish whether you are outdoors or indoors, since light around 380 nm is not normally present indoors.

[0138] Since the sensor 8 can accurately grasp the operating environment, it can automatically control the emitted VL and its illuminance according to the operating environment. Furthermore, this control can be controlled by the control device 10 using an application program built into a smartphone or the like.

[0139] Furthermore, the direction of the gaze, the orientation of the face, and whether or not the user is blinking are detected using a camera attached to a smartphone or similar device (for example, an image sensor camera facing the user). For example, if the face is looking downwards or is significantly deviating from the light path of the emitted light, the sensor 8 is configured to work in conjunction with the control device 10 to control the emission of light in order to conserve light energy.

[0140] Furthermore, if it's necessary to deliver light deep into the eye (to the retina), it's possible to configure the device so that light is emitted only when the gaze is directed towards the smartphone.

[0141] Furthermore, the camera can capture images of parts of the user other than their face, and by matching the user's images with predetermined patterns, it can detect the user's posture. If it determines that the user is hunched over or has poor posture, the system can be configured to warn the user with messages such as "Your posture is bad, please correct it" using images, text, audio, etc.

[0142] (Irradiation Management) The control device 10 is preferably executed by an application program that acquires and manages VL data irradiated from the second light-emitting element. The control device 10 may also have a function to acquire and manage BL data irradiated from the third light-emitting element using the application program.

[0143] Thus, the control device 10 has a configuration that allows it to acquire data on the light environment and manage the user's irradiation history by using the above-described application program.

[0144] Furthermore, if a device such as a smartphone is connected to the internet, the control device 10 can acquire data on the light environment at that location from the internet, store the user's irradiation history as a log in a storage means such as memory (not shown), and reflect it in the irradiation conditions.

[0145] As a result, it is possible to evaluate the irradiation history in relation to, for example, lifestyle rhythm management and vision test results.

[0146] Furthermore, it is preferable that the control device 10 acquires and manages measurement results of the operating environment through an application program. As a result, it is possible to evaluate data such as VL in relation to the operating environment.

[0147] As an application, sensors installed in the display device can detect the temperature, wetness, and blinking frequency of the eyeball surface, and the degree of dry eye can be measured through image analysis. Furthermore, the configuration may allow for the irradiation of the eye with red to infrared light, which is effective in reducing dry eye.

[0148] Furthermore, the system may also include a configuration that collects various acquired data on a server via the internet and statistically processes and analyzes data from a large number of users. Through such analysis, a large amount of data can be obtained and used for clinical research.

[0149] Furthermore, as shown in Figure 8, the display device 1 is equipped with various sensors 8 and, by linking them with GPS information, has a configuration that allows it to monitor the situation over time from the measurement data of the sensors 8 and to store the monitoring information.

[0150] By comparing and analyzing this monitoring information with a database via the cloud, it is possible to display messages such as "Your eyes are currently in this condition, so please be careful to increase your outdoor activities" on display device 1, providing feedback (advice) to the user.

[0151] Furthermore, if this monitoring information is managed at a data collection center (see the second embodiment) via the internet, the system is configured to allow doctors, parents, teachers, and other guardians to provide advice to users based on that monitoring information using the display device 1.

[0152] Furthermore, if data can be collected from multiple display devices (such as smartphones) A ​​through D, it will be possible to obtain data on the prevention of myopia onset and progression, which holds great promise as a measure against the global problem of myopia.

[0153] <Other Lights> Depending on the light-emitting element, the wavelength range of the light may be wide, making it impossible to selectively irradiate with VL, etc. In such cases, filters, etc., can be used to selectively irradiate only specific wavelengths, or to suppress irradiation to selectively irradiate with VL, etc. as described above.

[0154] Furthermore, if necessary, light around 435 nm and light around 505 nm may be restricted. The system also includes a control device 10 that restricts at least one or both of the light within the range of 435 nm ± 10 nm and light within the range of 505 nm ± 10 nm, and by controlling this, it is possible to restrict light around 430 nm and 505 nm, to which the retina is highly sensitive.

[0155] Thus, depending on the usage environment, it may be desirable to control the light emitted from the first light-emitting element to suppress any adverse effects that may occur due to the light received by the eyes. However, with the display device of the present invention, it is also possible to intentionally suppress light of a specific wavelength from the light emitted from the first light-emitting element and direct it towards the user's eyes.

[0156] Furthermore, in this embodiment, the system may be configured to irradiate with infrared light, near-infrared light, and far-infrared light as needed.

[0157] [2] Second Embodiment [2.1] Overview Configuration: An overview of the communication system S in the second embodiment of the present invention will be described using Figure 14. Figure 14 is a system configuration diagram showing the configuration of the communication system S in this embodiment, and in order to prevent the drawing from becoming complicated, only a predetermined user and communication terminal device 100 are shown. In other words, the communication system S has more users and communication terminal devices 100 than shown. Also, in this embodiment, the same reference numerals are used for the same components as in the first embodiment, and their descriptions are omitted.

[0158] The communication system S of this embodiment uses the display device 1 of the first embodiment as the communication terminal device 100, and is a communication system that effectively suppresses the onset and progression of myopia by irradiating the user's eyes with VL while displaying and providing a predetermined image to the user.

[0159] Furthermore, the communication system S consists of, for example, a communication terminal device 100 that has the functions of the communication terminal device 100 of the first embodiment and functions as various terminal devices that can be carried by the user, a provision function that provides information to each communication terminal device 100 via the network N, and an information management server device 20 that realizes the function of a data aggregation center of the first embodiment.

[0160] The communication terminal device 100 in this embodiment is a communication terminal device such as a smartphone or tablet-type information and communication terminal device that is carried by the user.

[0161] Furthermore, the communication terminal device 100 has a configuration that displays various images on the display screen 2, which is a first light-emitting element 6 mounted on the display device 1, while irradiating the user's eyes with VL using the second light-emitting element 3 of the display device 1.

[0162] Furthermore, the communication terminal device 100, for example as shown in Figures 1 and 2, is provided with a second light-emitting element 3 having the configuration shown in Figure 5 on a main frame 4 surrounding the display screen 2, similar to the first embodiment.

[0163] Furthermore, the communication terminal device 100 is equipped with various application programs, including a web browser, for displaying data written in a markup language such as XML (Extensible Markup Language) in a format viewable by the user.

[0164] Furthermore, the communication terminal device 100 is configured to perform data communication with the information management server device 20 and other server devices (not shown) connected to the network N (for example, a server device that distributes weather information), and to perform display processing of data received via the network N.

[0165] In particular, the communication terminal device 100 of this embodiment has a configuration that performs the following in order to provide appropriate VL irradiation to the user's eyes: (1) personal data management processing that stores the user's activity history (life log) over a predetermined period (for example, one day) and manages personal data indicating the stored life log; (2) dosed VL energy amount calculation processing that calculates the amount of energy the user has been exposed to from the sun over a predetermined period in the past (hereinafter referred to as "dosed VL energy amount") based on the stored personal data; (3) deficit dose amount calculation processing that compares the dosed VL energy amount identified in the dosed VL energy amount calculation processing with the dose amount of VL that the user is recommended to be exposed to over a predetermined period (for example, one day) in order to suppress the onset and progression of myopia (hereinafter referred to as "recommended dose amount") and calculates the deficit amount relative to the recommended dose amount; and (4) VL irradiation control processing that controls the irradiation of VL to the user based on the deficit dose amount calculated in the deficit dose amount calculation processing.

[0166] The information management server device 20 functions as a data aggregation center in the first embodiment, and has the function of collecting and managing data corresponding to the exposure history of VL irradiated to the user's eyes from each communication terminal device 100, and presenting it to operators such as doctors, parents, teachers, counselors, and other caregivers using various terminal devices (not shown).

[0167] Furthermore, the information management server device 20 has a configuration that allows it to collect and provide monitoring information, monitor the results of actual visual acuity measurements and VL irradiation history, and investigate the relationship between VL irradiation dose and the onset and progression of myopia.

[0168] In this case, for example, the operator can be required to input objective indicator values ​​that show the degree of myopia, such as axial length, and these indicator values, along with the VL monitoring results, can be managed and aggregated using other I / O to ensure the objectivity of the monitoring results.

[0169] [2.2] Communication terminal device: Next, the configuration of the communication terminal device 100 of this embodiment will be described with reference to Figure 15. Figure 15 is a block diagram showing an example of the configuration of the communication terminal device 100 of this embodiment.

[0170] As shown in Figure 15, the communication terminal device 100 of this embodiment includes a display unit 110 that constitutes a display screen 2, a network communication unit 111 that is connected to the network N, an I / O interface unit 112, a storage unit 113 that stores data corresponding to various types of information, and a second light-emitting element driving circuit 114 that drives the second light-emitting element 3 having the configuration shown in Figure 5.

[0171] Furthermore, the communication terminal device 100 includes a display control unit 115 that controls the display of images on the display screen 2, a management control unit 116, a camera unit 117 for capturing images, an operation unit 118 configured as a touch panel, and a timer 119 that identifies the current date and time.

[0172] Furthermore, the communication terminal device 100 includes a sensor unit 120 having various sensors, including a VL illuminance sensor; a location information detection unit 122 that generates location information of the user's current location; and an application execution unit 200 that performs the above-mentioned personal data management and VL irradiation control processes.

[0173] Furthermore, the above components are interconnected by bus B, which facilitates the exchange of various data and signals.

[0174] The display unit 110 is composed of a liquid crystal panel or an organic EL display panel.

[0175] The network communication unit 111 is a predetermined network interface and, under the control of the terminal management control unit 180 and the application execution unit 200, exchanges various data with the information management server device 20 and various other server devices (not shown) connected to the network N via the base station BS.

[0176] The I / O interface unit 112 is, for example, an input / output interface such as USB (Universal Serial Bus) or wireless LAN (IEEE 208.11a, b, n, ac).

[0177] In particular, the I / O interface unit 112 relays the exchange of data between the connected external device (not shown) and bus B.

[0178] The I / O interface unit 112 is used to send various command instructions to a wearable terminal device (not shown) based on the user's instructions, and to acquire data such as the user's heart rate from the wearable terminal device.

[0179] The memory unit 113 is composed of, for example, an EEPROM (Electrically Erasable Programmable Read Only Memory) or flash memory.

[0180] The memory unit 113 includes an application memory unit 113a that stores various application programs, including a personal data management application program and a VL irradiation control application program; a VL irradiation history data memory unit 113b that stores VL irradiation history data; a personal data memory unit 113c that stores personal data; and a RAM 113d used as a work area.

[0181] In particular, the VL irradiation history data storage unit 113b stores VL irradiation history data that associates, for example, the date with the illuminance and duration (i.e., energy amount) when the second light-emitting element 3 was illuminated on that date.

[0182] The display control unit 115 performs various controls for displaying an image on the display unit 110 that constitutes the display screen 2.

[0183] In particular, when the display control unit 115 irradiates the user's eyes with BL in order to regulate the circadian rhythm, and when displaying an image on the display screen 2 during daylight hours, it may increase the amount of BL irradiation by display processing to irradiate the user's eyes with an appropriate amount of BL.

[0184] The control unit 116 is mainly composed of a CPU (Central Processing Unit) and provides integrated control of each part of the communication terminal device 100.

[0185] The camera unit 117 includes a lens, flash, shutter, and an optical system (not shown) for adjusting the focus, zoom, and focus of the lens, and has camera functions for a so-called digital camera.

[0186] The control unit 118 consists of various confirmation buttons, operation buttons for inputting various operation commands, numerous keys such as a numeric keypad, and a touch panel, and is used when performing each operation.

[0187] Timer 119 is used to determine the current date and time, and also to measure the time spent outdoors.

[0188] The sensor unit 120 is composed of the sensor 8 of the first embodiment, which includes a VL illuminance sensor.

[0189] The location information detection unit 122 is composed of a GPS (Global Location System) receiver and generates the user's location information based on GPS signals received from GPS satellites 30.

[0190] In this embodiment, the method for determining whether the user is indoors or outdoors based on location information is not limited to this. For example, the location information detection unit 122 may execute an application program for map display and plot the current location corresponding to the location information on a map using the communication terminal device 100 to determine whether the user is indoors or outdoors.

[0191] Alternatively, the location information detection unit 122 may transmit location information to a map display server device located on the network N, and the server device may determine whether the current location is indoors or outdoors, and obtain the determination result from the server device.

[0192] The application execution unit 200 is configured with the same or an independent CPU as the management control unit 116.

[0193] The application execution unit 200 then realizes each function by executing various application programs stored in the application storage unit 113a under the control of the management control unit 116.

[0194] Specifically, the application execution unit 200 executes a personal data management application program and a VL irradiation control application program to implement: (1) a location identification unit 210 that identifies the user's location; (2) a data acquisition unit 220 that acquires various types of data; (3) a personal data management unit 230 that manages personal data; (4) a gaze direction and eye position detection unit 240 that detects the gaze direction and eye position; (5) an irradiation dose determination unit 250 that calculates the amount of VL energy already administered and the amount of dose needed to be reduced; (6) an irradiation control unit 260 that executes VL irradiation control processing; and (7) a transmission processing unit 270 that transmits various types of data.

[0195] Details of the application execution unit 200 in this embodiment will be described later.

[0196] [2.3] Application Execution Unit: Next, the details of the application execution unit 200 of this embodiment will be described.

[0197] (Location Identification Unit) The location identification unit 210 identifies the user's current location from the location information detected by the location information detection unit 122, and determines whether the current location is indoors or outdoors.

[0198] Furthermore, when determining whether the current location is outdoors, the location identification unit 210 controls the sensor unit 120 to measure the irradiance of the VL around the user, and determines that the user's location is outdoors if the location is outdoors and the irradiance of the VL exceeds the threshold α.

[0199] In particular, the accuracy of location information varies depending on the reception conditions of the GPS signal, making it difficult to determine with high accuracy whether the user is indoors or outdoors based solely on the GPS signal.

[0200] Furthermore, as mentioned above, the light emitted from lighting fixtures contains either no VL or only a very small amount of VL, so the VL measurement values ​​obtained by the sensor differ significantly depending on whether the device is located outdoors or not.

[0201] Therefore, the location identification unit 210 of this embodiment determines that the user's current location is outdoors and that a predetermined threshold α (for example, 0.2 W / m) is met. ２ If the number of users exceeds the following, the user will be identified as being located outdoors.

[0202] (Data acquisition unit) The data acquisition unit 220 works in conjunction with the network communication unit 111 to acquire weather information and VL measurement data corresponding to the user's current location from an external source, based on the location information detected by the location information detection unit 122.

[0203] The method for acquiring weather information and VL measurement data is arbitrary. For example, the data acquisition unit 220 transmits location information to a weather information management server device (not shown) located on the network N, and acquires weather information corresponding to the current location based on the transmitted location information.

[0204] Furthermore, the data acquisition unit 220 transmits the type of weather (sunny, cloudy, rainy, etc.) and location information indicated by the weather information to the information management server device 20, and based on the transmitted type of weather and location information, it acquires VL measurement data corresponding to the type of weather from the VL measurement data corresponding to the user's location area.

[0205] (Personal Data Management Unit) The personal data management unit 230 stores the user's location information obtained by the location information detection unit 122 as personal data (life log) in the personal data storage unit 113c at predetermined intervals (for example, every minute), associating it with the time.

[0206] Furthermore, the personal data management unit 230 stores the indoor / outdoor determination result for the user's current location, as detected by the location identification unit 210, as personal data in the personal data storage unit 113c, in association with the location information.

[0207] The personal data management unit 230 may store the irradiance of the VL received by the sensor unit 120 at that time as the irradiated VL dose amount, either in lieu of or together with the indoor / outdoor determination result, according to the various sensors of the sensor unit 120 and the user's operation, in the personal data storage unit 113c.

[0208] (Eye-gaze and position detection unit) The eye-gaze and position detection unit 240 works in conjunction with the camera unit 117 to determine the position of the user's eyes, the direction of their gaze, the state of their eyelids (open or closed), and the distance to their eyes.

[0209] The methods for detecting eye position, gaze direction, eyelid opening / closing state, and processing up to the eyes are the same as before, so details are omitted.

[0210] Furthermore, by configuring the system so that the gaze-line and position detection unit 240 detects the open / closed state of the user's eyelids, and the second light-emitting element driving circuit 114 illuminates the VL only when the user's eyelids are open, it is possible to reliably illuminate the user's eyes with VL while preventing unnecessary illumination of VL, thereby achieving power savings.

[0211] Furthermore, the gaze-line and position detection unit 240 of this embodiment constitutes, for example, the "detection means" of the present invention.

[0212] (Irradiation dose determination unit) The irradiation dose determination unit 250 performs processing to calculate the amount of VL energy already administered and processing to calculate the amount of dose needed to be reduced.

[0213] Specifically, the irradiation dose determination unit 250 acquires personal data generated by the personal data generation process and calculates irradiated VL dose information, which indicates the amount of VL energy irradiated to the user during a predetermined period, based on the acquired personal data.

[0214] In other words, the irradiation dose determination unit 250 calculates the dose (estimated amount) of VL (velocity luminescence) that the user has been exposed to from the sun in the past 24 hours, taking into account the weather conditions, based on the area where the user is located and whether it is indoors or outdoors at predetermined intervals (e.g., every minute).

[0215] Basically, the irradiance of VL outdoors varies depending on the user's current location. For example, the irradiance of VL outdoors in Hokkaido (a region located in northern Japan) is different from that in Okinawa (a region located in southern Japan).

[0216] Furthermore, even within the same region, the irradiance of VL outdoors changes depending on the weather.

[0217] For example, when the VL irradiance outdoors in Tokyo (a region located almost in the center of Japan) was measured multiple times every hour from 11:00 to 14:00 in each horizontal direction (east, west, north, and south), and the average of the measurements for the four directions was calculated, the average value for the time period from 11:00 to 14:00 was obtained as follows.

[0218] (A) Average value on a clear day: 5.83 W / m ２ (B) Average value on cloudy days: 2.71 W / m ２

[0219] In other words, in Tokyo, under clear skies, the irradiance is more than twice as strong compared to under cloudy skies. Note that the value for clear skies is the average value between 11:00 and 14:00, therefore the irradiance at noon in Tokyo mentioned above (6.83 W / m²) is also relevant. ２ ) is different.

[0220] As described above, the irradiance of the VL outdoors changes depending on the user's current location and the weather. Therefore, in this embodiment, the irradiance of the VL in each area is measured in advance for each weather condition, and the data showing the measurement results (hereinafter referred to as "VL measurement data") is registered in the information management server device 20.

[0221] The irradiation dose determination unit 250 then identifies the weather conditions at the user's current location and obtains VL measurement data corresponding to the identified weather conditions from the information management server device 20.

[0222] In this embodiment, the source of weather information is not limited to this; weather information may also be obtained from a server device (not shown) for weather information distribution via network N.

[0223] Furthermore, the method for determining the weather at the user's location is arbitrary. For example, the communication terminal device 100 may be equipped with sensors such as a thermometer, hygrometer, and illuminometer, and the weather may be estimated based on the information obtained from these sensors. Alternatively, the user may be required to input the current weather.

[0224] Meanwhile, the irradiation dose determination unit 250 compares (1) the dosed VL energy amount identified in the dosed VL energy amount calculation process with (2) the dose of VL that the user is recommended to be exposed to in one day to suppress the onset and progression of myopia (hereinafter referred to as the "recommended dose"), and calculates the deficit relative to the recommended dose according to the comparison result.

[0225] The irradiation dose determination unit 250 then subtracts the amount of dosed VL energy calculated in the dosed VL energy calculation process from the recommended dose to calculate the deficit relative to the recommended dose. In this embodiment, the recommended dose is 27,900 J / m³. ２ This is the recommended dose. However, other values ​​may be used as the recommended dose.

[0226] While it is generally known that engaging in outdoor activities for about 14 hours a week can suppress the onset and progression of myopia (Non-Patent Literature 6), further research by the present inventors has revealed that engaging in outdoor activities for about 2 to 3 hours a day can more effectively suppress the onset and progression of myopia.

[0227] Furthermore, there are reports that even 80 to 90 minutes of outdoor activity per day can produce effects. However, in this embodiment, based on the inventors' research findings, the recommended dose is set to the amount of VL energy delivered to the user's eyes when they engage in outdoor activity for 2 to 3 hours per day, thereby employing a method to more effectively suppress the onset of myopia and other related issues.

[0228] Furthermore, as mentioned above, 3.1 W / m ２ If you engage in outdoor activities for two hours at this illuminance, you will experience 22,320 J / m² of radiation. ２Since the VL is dosed into the user's eyes, the daily dose is 22,320 to 33,480 J / m³. ２ By dosing VL of this product into the user's eyes, the onset and progression of myopia can be more effectively suppressed. The recommended dose used in this embodiment is 27,900 J / m³. ２ It is 3.1 W / m ２ This is the amount of VL energy delivered to the user's eyes from sunlight when they are active in that environment for 2.5 hours.

[0229] (Irradiation Control Unit) The irradiation control unit 260 works in conjunction with the second light-emitting element drive circuit 114 to control the second light-emitting element 3 based on the amount of the insufficient dose calculated by the insufficient dose calculation process, and performs a VL irradiation control process to irradiate the user's eyes with VL.

[0230] Specifically, the irradiation control unit 260 determines the illuminance and irradiation period of the VL irradiated from the second light-emitting element 3 so that the amount of energy required to compensate for the deficit calculated by the deficit dose calculation process is equal to the amount of energy required, and at a predetermined timing, the second light-emitting element 3 is made to emit light at the determined illuminance for the determined period.

[0231] Furthermore, the irradiation control unit 260 performs control to illuminate the second light-emitting element 3 while the user's gaze, as detected by the gaze-line and position detection unit 240, is directed toward the display screen 2 of the communication terminal device 100.

[0232] The irradiation control unit 260 then stores information on irradiation timing, illuminance, and irradiation period in the VL irradiation history data storage unit 113b.

[0233] In this embodiment, the irradiation control unit 260 may, at any timing and based on the user's instructions, execute irradiation control to irradiate the VL with any intensity for any period of time. In this case, the irradiation control unit 260 stores information regarding the irradiation control to be executed in the VL irradiation history data storage unit 113b.

[0234] (Transmission Processing Unit) The transmission processing unit 270, in conjunction with the network communication unit 111, uploads the VL irradiation history data to the information management server device 20 at a predetermined timing.

[0235] Specifically, the transmission processing unit 270 has a configuration that allows the information management server device 20 to identify which user the VL irradiation history data corresponds to by uploading VL irradiation history data associated with the user ID corresponding to the user of the machine.

[0236] Furthermore, the transmission processing unit 270 aggregates and manages personal data in the information management server device 20, and when it is to be used for advice by doctors, parents, or other guardians, it uploads the personal data in association with VL irradiation history data and user ID.

[0237] [2.4] VL irradiation control processing: The VL irradiation control processing performed in the application execution unit 200 of the communication terminal device 100 in this embodiment will be described using Figure 16. Figure 16 is a flowchart showing the VL irradiation control processing performed in the application execution unit 200 of the communication terminal device 100 in this embodiment.

[0238] This operation assumes that the user's personal data is stored in the personal data storage unit 113c.

[0239] First, when the irradiation dose determination unit 250 detects a predetermined time (such as at night before going to bed, or at a predetermined time in the morning or afternoon when waking up) (step Sa1), it works in conjunction with the data acquisition unit 220 to perform a process to calculate the amount of dosed VL energy within a predetermined period in the past (for example, the past 24 hours) based on already stored personal data (step Sa2).

[0240] In particular, the irradiation dose determination unit 250 calculates the period of time spent outdoors, including regional information, based on the location area and whether the person is indoors or outdoors, included in the personal data for each predetermined time interval (for example, every minute) during the dosed VL energy calculation process.

[0241] Furthermore, the irradiation dose determination unit 250, in conjunction with the network communication unit 111, acquires weather information for the relevant region and obtains VL measurement data for the relevant region and time corresponding to the weather indicated by the acquired weather information.

[0242] The irradiation dose determination unit 250 then calculates the amount of dosed VL energy used by the user within a predetermined period in the past, based on the acquired VL measurement data and the period of outdoor presence including the calculated regional information.

[0243] Next, the irradiation dose determination unit 250, if the user's eyes have already been irradiated with VL within a predetermined period in the past, obtains the irradiation time and irradiation intensity and calculates the amount of VL energy already irradiated (step Sa3).

[0244] Next, the irradiation dose determination unit 250 subtracts the calculated dosed VL energy amount and the irradiated VL energy amount from the pre-registered recommended dose amount, performs a dose deficiency calculation process, and calculates the amount of VL energy that should be dosed to the user's eye by the second light-emitting element 3 (step Sa4).

[0245] For example, if the irradiated VL energy amount is "3000 J / m ２ Based on personal data, if the user is exposed to 15,000 J / m³ of air during outdoor activities over a specified period, ２ When exposed to an energy amount VL, the irradiation dose determination unit 250 determines the amount of energy deficit as 9900 J / m ２ (=27900J / m ２ -3000 J / m ２ -15000 J / m ２ ) is calculated as follows.

[0246] Next, the irradiation control unit 260 starts executing the VL irradiation control process to compensate for the dose deficiency calculated in the dose deficiency calculation process (step Sa5).

[0247] Specifically, the irradiation control unit 260 determines the illuminance and irradiation period of VL, and controls the second light-emitting element drive circuit 114 to cause the second light-emitting element 3 to emit light at the determined illuminance and for the determined period.

[0248] Next, when the irradiation control unit 260 detects the end of VL irradiation to the user's eyes (step Sa6), it generates VL irradiation history data based on the illuminance of the second light-emitting element 3 and the irradiation period, stores it in the VL irradiation history data storage unit 113b (step Sa7), and terminates this operation.

[0249] Furthermore, the transmission processing unit 270 transmits (uploads) the VL irradiation history data stored in the VL irradiation history data storage unit 113b to the information management server device 20 at a predetermined timing, where it is reviewed by the user or provided to a doctor, parent, or other responsible guardian.

[0250] As described above, the communication system S of this embodiment, having the above configuration, can deliver an appropriate amount of VL energy to the user's eyes, even for users with short outdoor activity times. Furthermore, the communication system S of this embodiment can accurately identify the amount of VL energy the user was exposed to during the life log storage period and accurately calculate the amount of dose needed to compensate for the shortfall relative to the recommended dose.

[0251] [3] Modified Versions [3.1] Modified Version 1: In the second embodiment described above, a second light-emitting element 3 is provided separately from the display screen 2, and the illuminance and irradiation period are determined according to the amount of the insufficient dose, and the second light-emitting element 3 is made to emit light at the determined illuminance for the determined period. However, as shown in Figure 6, it is also possible to provide a configuration in which a first light-emitting element 6 made of RGB and a second light-emitting element 3 are provided adjacent to each other within one pixel of the display screen 2. In this case as well, the amount of the insufficient dose is calculated by the same process as in Figure 16.

[0252] Then, the irradiation control unit 260 determines the emission intensity and emission period of the second light-emitting element 3 to make up the insufficient dose, and the display control unit 115 drives the display screen 2 so that the VL is irradiated at the determined intensity for the time determined. In this case, since one pixel is one of the four primary colors RGBV (red, green, blue, and violet), it is desirable to either (1) drive the display screen 2 with the display control unit 115 while adjusting the color balance so that the image is displayed in the four primary colors RGBV, or (2) drive the first light-emitting element 6 and the second light-emitting element 3, which consist of RGB, separately and independently. With this configuration, it is possible to prevent the color balance of the image display by the first light-emitting element 6 from being disrupted by the emission of light from the second light-emitting element 3. The method of adjusting the color balance and displaying the image in the four primary colors RGBV is the same as in the conventional method.

[0253] By adopting this configuration, the wavelength range of the base color is broadened, improving color rendering and making it possible to display colors that could not be reproduced with conventional RGB display screens. Alternatively, display screen 2 may be manufactured in RGB format instead of RGB, and the image may be displayed while adjusting the color balance in RGB. In this case as well, the amount of the deficiency dose is calculated using the same process as in Figure 16.

[0254] The irradiation control unit 260 determines the illuminance and duration of the second light-emitting element 3 (V in RGV) to match the insufficient dose amount, and the display control unit 115 drives the display screen 2 so that VL is output at the determined illuminance for the duration specified.

[0255] [3.2] Modification 2: In the second embodiment described above, a configuration in which VL is irradiated into the user's eyes was described. However, it is also possible to replace the second light-emitting element 3 in Figure 15 with a third light-emitting element and perform the same processing. In this case, the light source is manufactured with a configuration in which the excitation light LED is a third light-emitting element that outputs light with a wavelength of about 460 ± 20 nm as the excitation light LED in the configuration of Figure 5.

[0256] Based on the user's time spent outdoors over the past 24 hours, the irradiance and duration of the BL (Block Light) are determined, and the emission of light from the third light-emitting element is controlled based on these determinations. In this case, the irradiance of the BL in each area is measured in advance for each weather condition, and the BL measurement data showing these measurement results is registered in the information management server device 20.

[0257] The irradiation dose determination unit 250 calculates the amount of BL energy already administered based on the outdoor location period data and the BL measurement data, and subtracts this calculated value from the recommended dose to calculate the dose amount for the BL deficit. Based on the calculated deficit amount of BL energy in this way, the irradiation dose determination unit 250 determines the illuminance and emission period when the third light-emitting element is activated.

[0258] The irradiation control unit 260 should cause the third light-emitting element to emit light at the determined illuminance for the specified period. In this case, the third light-emitting element is driven by the second light-emitting element drive circuit 114. However, since the second and third light-emitting elements are similar except for the emission frequency of the excitation light LED, there is no need to significantly change the circuit configuration of the second light-emitting element drive circuit 114, and this function can be achieved with only simple adjustments such as adjusting the drive voltage.

[0259] [3.3] Modification 3: In this embodiment, during the life log recording period, (1) the weather may change, or (2) the user may move from the area where the current value is recorded by airplane or the like, which may cause the weather and VL irradiation amount at the current location to change. In this case, the following method is employed to respond to changes in weather during the day.

[0260] First, the personal data management unit 230 divides the daytime into hourly time slots, for example, (1) 6:01 to 7:00, (2) 7:01 to 8:00, (3) 8:01 to 9:00, (4) 9:01 to 10:00, (5) 10:01 to 11:00, (6) 11:01 to 12:00, (7) 12:01 to 13:00, (8) 13:01 to 14:00, (9) 14:01 to 15:00, (10) 15:01 to 16:00, and (11) 16:01 to 17:00, and stores the time slot information along with the personal data storage unit 113c.

[0261] The irradiation dose determination unit 250 acquires weather information for the user's location during each time period, and also acquires VL measurement data for the user's location based on the weather information. The irradiation dose determination unit 250 then calculates the amount of VL energy the user was exposed to during each time period based on the duration of outdoor presence during each time period and the acquired VL measurement data. The irradiation dose determination unit 250 then calculates the amount of VL energy the user was actually exposed to during the life log storage period (i.e., the dosed VL energy amount) by summing up the energy amounts calculated in this way, and then calculates the insufficient dose amount by subtracting the calculated dosed VL energy amount from the recommended dose amount.

[0262] The irradiation control unit 260 illuminates the second light-emitting element 3 according to the calculation result. With this configuration, even if the weather at the user's location changes during the life log storage period, the amount of the insufficient dose can be accurately calculated and the insufficient VL can be dosed to the user's eyes, thereby effectively suppressing the onset and progression of myopia.

[0263] Furthermore, by dividing the daytime into multiple shorter time slots and adopting a configuration that identifies the period during which the user was outdoors and the weather conditions for each time slot, it is possible to more accurately determine the amount of dose deficit.

[0264] Even if the user moves during the life log storage period, the irradiation dose determination unit 250 acquires VL measurement data from the information management server device 20 for each time period based on the user's location and the weather at that location during that time period, and calculates the dosed VL energy amount based on the acquired VL measurement data and the period spent outdoors during that time period.

[0265] With this configuration, even if the user travels by airplane or other means during the life log memory period, the amount of the dose deficit can be accurately identified, and the second light-emitting element 3 can be made to emit light and illuminate the user's eyes according to the identified result, thereby effectively preventing the onset and progression of myopia.

[0266] [3.4] Modification 4: In the above embodiment, the installation position of the sensor unit 120 is not specified, but it may be installed on the main body of the communication terminal device 100 or on the wearable terminal device. Note that if the communication terminal device 100 is stored in a bag or pocket, it is difficult to accurately measure the VL irradiance around the user, so it is desirable to install it on the wearable terminal device. More preferably, in order to measure the VL irradiance at the position of the user's eyes, it is desirable to install it on, for example, eyeglasses.

[0267] When measuring the VL irradiance at the eye position, the amount of VL energy irradiated to the user's eyes, including the VL irradiance emitted from display screen 2, is included in the calculation of the dosed VL energy amount, allowing for a more accurate calculation of the VL energy deficit.

[0268] [3.5] Modification 5: In the second embodiment described above, the time period for irradiating the user's eyes with VL by the second light-emitting element 3 is not specified. However, since humans are naturally exposed to VL from sunlight during the daytime, it is preferable to irradiate the user's eyes with VL by the second light-emitting element 3 during the daytime in order to regulate the circadian rhythm.

[0269] In this modified example, after calculating the insufficient dose amount, when executing the VL irradiation control process, the irradiation control unit 260 obtains the current time using the timer 119, and when the current time falls within the period of approximately 5:00 to 18:30, the second light-emitting element 3 is made to emit light.

[0270] It is generally known that minor damage to the eyes in the human body can be repaired and regenerated over approximately 48 hours. Therefore, even if the VL dose to the user's eyes cannot be administered within 24 hours, it is highly likely that the onset and progression of myopia can be suppressed if it can be administered within the next 24 hours. For this reason, in this modified example, if the amount of VL dose within the 24-hour period of the life log is insufficient, and the daytime period has already ended, a configuration may be adopted in which the insufficient amount of VL is irradiated to the user's eyes during the next 24-hour daytime period.

[0271] Furthermore, it has been found that the effects of VL irradiation on the user's eyes accumulate over a period of approximately 24 to 48 hours. Therefore, if VL is irradiated for 30 minutes, and then again after an interval of about 10 hours, the subsequent VL irradiation will be able to suppress the onset of myopia in the user's eyes in the same way as VL irradiated within the 24-hour period.

[0272] In this modified version, the amount of VL that was insufficient the previous day is dosed during the daytime hours of the following day. This configuration allows VL to be irradiated to the user's eyes only during the daytime hours, thereby regulating the circadian rhythm and effectively suppressing the onset and progression of myopia. The same applies when BL is irradiated to the user's eyes.

[0273] The irradiation method is also arbitrary; for example, the light may be emitted in a pulsed manner, or the second light-emitting element 3 may be kept emitting light at the illuminance determined in the VL irradiation control process.

[0274] In summary, according to the present invention, it is possible to irradiate the user's eyes with light of a specific wavelength that is lacking in modern lifestyles, and the light received by the eyes can promote positive effects, such as suppressing the onset and progression of myopia. Furthermore, it can be effective in regulating, adjusting, preventing, and treating the user's body and mind.

[0275] 1 Display device / display system (smartphone or personal computer), 2 Display screen, 3 Second light-emitting element (light-emitting element for specific wavelength light), 4 Frame, 5 Accessories (light-emitting element), 6 First light-emitting element (light-emitting element for image display), 7 Irradiation light, 8 Sensor, 10 Control device, 11 Parts of the second light-emitting element, etc., 12 Eye part, 13 Display screen part, 20 Information management server device, 30 GPS satellite, 50 User, 51 Eye, 111 Network communication unit, 112 I / O interface unit, 113 Storage unit, 113a Application storage unit, 113b VL irradiation history data storage unit, 113c Personal data storage unit, 113d RAM, 114 Second light-emitting element driving circuit, 115 Display control unit, 116 Management control unit, 117 Camera unit, 118 Operation unit, 119 Timer, 120 Sensor, 121 Application execution unit, 210 Location identification unit, 220 Data acquisition unit, 230 Personal data management unit, 240 gaze detection unit, 250 irradiation dose determination unit, 260 irradiation control unit, 270 transmission processing unit

Claims

DEPCT6324 / 09 / 25621. A display system comprising: a first emitting element that emits the display light used for image display; a second emitting element that projects an auxiliary light within the wavelength range of 360 nm to 400 nm, including that light, to the user; and a control unit that controls the projection of the auxiliary light from the second emitting element.

2. A display system under claim 1, where the second emitting element is a single emitting element integrated with the first emitting element or an emitting element provided separately from the first emitting element.

3. A display system under claim 1 or 2, where the second emitting element (A) is provided to the display screen's surrounding frame, (B) is provided to the display screen, or (C) is provided as an accessory, when provided separately from the first emitting element.4.A display system pursuant to one of Claims 1 through 3, which also includes: a detection pathway for the detection of at least one of (1) the user's eye position, (2) the open / closed state of the eyelids, (3) the distance to the eye, and (4) the direction of the user's line of sight, whereby the control unit controls the projection of the first special light to the user's eye based on at least one of the eye position, the open / closed state of the eyelids, the distance to the eye, and the direction of the user's line of sight detected by the detection pathway.

5. A display system pursuant to Claim 4, whereby the control unit causes the second illuminating element to project the first special light when the user's line of sight is determined to be toward the display screen based on the direction of the line of sight detected.

6. A display system pursuant to one of Claims 1 through 5, whereby the control unit determines at least one control type of projection time, projection interval, and exposure of the first special light emitted from the second illuminating element, and controls the projection of the first special light based on the defined control type. 7.A display system under one of the claims 1 through 6, which also includes: a first photoelectric sensor that measures the state of special light 1 at the position of the user's eyes, where a control unit controls the projection of special light 1 emitted from the second light-emitting element based on the measurements of the first photoelectric sensor.

8. A display system under one of the claims 1 through 7, which also includes: a second photoelectric sensor that measures the state of light at the position of the user's eyes in the environment in which the user is placed, where a control unit controls the projection of special light 1 emitted from the second light-emitting element based on the measurements of the second photoelectric sensor, and adjusts the output of the display light emitted from the first light-emitting element based on the special light 1 emitted from the second light-emitting element.

9. A display system under the claim 7, where a control unit controls the projection of special light 1 emitted from the second light-emitting element based on the measurements of the first photoelectric sensor, and adjusts the output of the display light emitted from the first light-emitting element based on the special light 1 emitted from the second light-emitting element.10.

11. A display system under one of Claims 1 through 9, which also includes a management method to obtain projection information relating to at least one control type of projection time, projection interval, and exposure of the first special light projected from the second light-emitting element, and to store the obtained projection data in a first storage method for use in a previously defined user activity.

12. A display system under one of Claims 1 through 5, where the management method obtains measurement information identifying the measurement results of the first special light projected at the user's eye position, stores the obtained projection and measurement data together with the time in a first storage method, and distributes the stored projection and measurement data to an external device.

13. A display system under one of Claims 1 through 5, where the control unit obtains at least information identifying the user's provided activity within a previously defined past period as personal data, and controls the projection of the first special light from the second light-emitting element based on the obtained personal data.The display system under claim 12, which also includes: a second log pathway containing personal data stored on it, to which the control unit receives personal data from the second log pathway14. The display system under claim 12 or 13, to which the control unit receives weather information that identifies the weather in the time bar during the day, identifies the time period when the user was outdoors in the time bar during the day for a previously defined past period as the outdoor location time period based on the personal data received, and controls the projection of the first special light from the second light-emitting element based on the specified outdoor location time period and the received weather information15.A display system under claim 14, where the control unit obtains the average value of the spectral exposure for outdoor measurements of the first special light for each type of weather in advance, calculates the amount of energy of the first special light projected onto the user's eyes during the day based on the obtained average value, the specified outdoor location time, and the obtained weather information, determines the brightness and projection time of the first special light projected from the second light-emitting element based on the calculated energy amount and the ideal projected energy amount obtained in advance, and projects the first special light from the second light-emitting element based on the specified brightness and projection time.

16. A display system under one of claims 1 through 15, where the exposure of the light emitted from the second light-emitting element is 10 watts / square meter or less.17.A display system under any of the claims 1 to 16, which also includes: a third emitting element that projects a second special light within the 460 nm wavelength range, plus or minus 20 nm, toward the user, where the projection of the second special light from the third emitting element is controlled.

18. A display system under claim 17, where the third emitting element is integrated into the first emitting element.

19. A display system under claim 17 or 18, where the exposure of the second special light emitted from the third emitting element is 1 watt / m² or less.

20. A display system under any of the claims 1 to 19, where at least one or both types of light within the 435 nm wavelength range, plus or minus 10 nm, and light within the 505 nm wavelength range, plus or minus 10 nm, are restricted.

21. An electronic device incorporating a display system described in any of the claims 1 to 20.22.The illumination system comprises: a light source configured by a first emitting light-emitting element that projects special light within the wavelength range of 360 nm to 400 nm, including that value, and a fluorescent material enclosing the perimeter of the light-emitting element; and a control unit that controls the light source, where the control unit receives personal data identifying the user's provided activity, and controls the projection of special light from the first light-emitting element based on the received personal data.-----------------------------------------------------------DEPCT631. The display system comprises: a first light-emitting element that emits display light used for image display; a second light-emitting element that projects special light within the wavelength range of 360 nm to 400 nm, including that value, to the user; and a control unit that controls the projection of special light from the second light-emitting element.2.

3. A display system under claim 1, where the second emitting element is a single emitting element integrated with the first emitting element, or an emitting element provided separately from the first emitting element.

4. A display system under claim 1 through 3, which also includes: a detection pathway for the detection of at least one of (1) the user's eye position, (2) the open / closed state of the eyelids, (3) the distance to the eye, and (4) the line of sight direction of the user, where the control unit controls the projection of the first special light to the user's eye based on at least one of the eye position, the open / closed state of the eyelids, the distance to the eye, and the line of sight direction of the user detected by the detection pathway.A display system under claim 4, whereby the control unit causes the second light-emitting element to project special light 1 when the user's line of sight is determined to be toward the display screen, which then displays the image based on the direction of the detected line of sight.

6. A display system under one of claims 1 through 5, whereby the control unit determines at least one control type for the projection time, projection duration, and exposure of special light 1 emitted from the second light-emitting element, and controls the projection of special light 1 based on the determined control type.

7. A display system under one of claims 1 through 6, which also includes: a primary light sensor that measures the status of special light 1 at the user's eye position, whereby the control unit controls the projection of special light 1 emitted from the second light-emitting element based on the measurements of the primary light sensor.8.A display system under one of the claims 1 through 7, which also includes: a second photoelectric sensor that measures the light status at the position of the user's eyes in the environment in which the user is placed, where a control unit controls the projection of the first special light emitted from the second light-emitting element based on the measurements of the second photoelectric sensor, and adjusts the output of the display light emitted from the first light-emitting element based on the first special light emitted from the second light-emitting element.

9. A display system under claim 7, where a control unit controls the projection of the first special light emitted from the second light-emitting element based on the measurements of the first photoelectric sensor, and adjusts the output of the display light emitted from the first light-emitting element based on the first special light emitted from the second light-emitting element.10.

11. A display system under one of Claims 1 through 9, which also includes a management method to obtain projection information relating to at least one control type of projection time, projection interval, and exposure of the first special light projected from the second light-emitting element, and to store the obtained projection data in a first storage method for use in a previously defined user activity.

12. A display system under one of Claims 1 through 5, where the management method obtains measurement information identifying the measurement results of the first special light measured at the user's eye position, stores the obtained projection and measurement data together with the time in a first storage method, and distributes the stored projection and measurement data to an external device.

13. A display system under one of Claims 1 through 5, where the control unit obtains at least information identifying the user's provided activity within a previously defined past period as personal data, and controls the projection of the first special light from the second light-emitting element based on the obtained personal data.The display system under claim 12, which also includes: a second log pathway containing personal data stored on it, from which the control unit receives personal data from the second log pathway14. The display system under claim 12 or 13, from which the control unit receives weather information that identifies the weather in the time bar during the day, identifies the time period when the user was outdoors in the time bar during the day for a previously defined past period as the outdoor location time period based on the personal data received, and controls the projection of the first special light from the second light-emitting element based on the specified outdoor location time period and the received weather information15.A display system under claim 14, where the control unit obtains the average value of the spectral exposure for outdoor measurements of the first special light for each type of weather in advance, calculates the amount of energy of the first special light projected onto the user's eyes during the day based on the obtained average value, specified outdoor location time, and obtained weather information, determines the brightness and projection time of the first special light projected from the second light-emitting element based on the calculated energy amount and the ideal projected energy amount obtained in advance, and projects the first special light from the second light-emitting element based on the specified brightness and projection time.

16. A display system under one of claims 1 through 15, where the exposure of the light emitted from the second light-emitting element is 10 watts / square meter or less.17.A display system under any of the claims 1 to 16, which also includes: a third emitting element that projects a second special light within the 460 nm wavelength range, plus or minus 20 nm, toward the user, where the projection of the second special light from the third emitting element is controlled.

18. A display system under claim 17, where the third emitting element is integrated into the first emitting element.

19. A display system under claim 17 or 18, where the exposure of the second special light emitted from the third emitting element is 1 watt / m² or less.

20. A display system under any of the claims 1 to 19, where at least one or both types of light within the 435 nm wavelength range, plus or minus 10 nm, and light within the 505 nm wavelength range, plus or minus 10 nm, are restricted.

21. An electronic device incorporating a display system described in any of the claims 1 to 20.22.The integrated lighting system consists of: a light source configured with a light-emitting element that projects a special light within the wavelength range of 360 nm to 400 nm, including that value, and a phosphorescent material surrounding the light-emitting element; and a control unit that controls the light source, where the control unit receives personal data identifying the user's provided activity, and controls the projection of the special light from the light-emitting element based on the received personal data.