TW201243211A - Light emitting sheet device and illumination device - Google Patents

Abstract

A light emitting sheet device including a light source and a light guiding sheet which introduces a light from the light source to a surface direction, wherein groove portions which reflect a light internally in the light guiding sheet are formed at a lower surface of the light guiding sheet and at least a portion of the groove portion is filled in with a light reflective resin including white light reflective fine particles.

Description

201243211 SUMMARY OF THE INVENTION Technical Field The present invention relates to a planar light-emitting device and an illumination device that can be used for an indoor lamp, an electronic device, a liquid crystal display device, and the like of a vehicle. This application claims priority based on Japanese Patent Application No. 2011-70808, filed on March 28, 2011 in Japan, and its content is incorporated. BACKGROUND OF THE INVENTION Indoor lighting, electronic equipment (mobile phones, etc.), liquid crystal display devices, and the like of vehicles use a planar light-emitting device having an illumination function. In the planar light-emitting device, a light source and a light guide plate for introducing light from the light source are provided, and a part of the side end surface of the light guide plate is colored, and light is reflected at the side end surface (see Patent Document 1). The planar light-emitting device of this structure can prevent light leakage from the side end surface of the light guide plate, thereby improving the brightness away from the light source, and the brightness can be uniformized as a whole. SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION However, in the above-described planar light-emitting device, at the time of assembly or use of a product, 201243211 Sometimes the color of the end face will be damaged, and the effect will be low. Further, since the colored portion is provided on the end surface of the light guide plate, the range or size of the effect can be limited by the shape of the light guide plate. Therefore, the effect of sufficiently improving the brightness cannot be obtained due to the shape of the light guide plate or the like. The present invention has been made in view of the above circumstances, and an object thereof is to provide a planar light-emitting device and an illumination device which have high degree of freedom in design and can adjust the brightness of an arbitrary place. Solution to Problem In order to solve the above problems, the present invention provides the following configuration. The present invention provides a planar light-emitting device comprising: one or a plurality of light sources; and a sheet-shaped light guide that can introduce light from the light source in a direction of a guiding surface, at least one of which is formed on at least one side of the light guiding body A groove portion that internally reflects light in the light guide body, and at least a portion of the inside of the groove portion is embedded with a light-reflective resin containing light-reflecting fine particles that exhibit white color. The groove portion is configured to surround a first region which is a part of the light guide body, and is divided into a second region other than the first region. The planar light-emitting device of the present invention may be configured to further include a control unit that can independently control the kinematic lamp of the plurality of light sources, and wherein the light source can introduce light into the region, and the light source is otherwise One of them can introduce light into the second region. The groove portion may be formed to penetrate the light guide body. The light-reflecting fine particles are preferably composed of oxidized crystal. The present invention provides a first illumination unit having a device having the planar light emission S] 4 201243211, a substrate, and a second illumination that is narrower than the first illumination portion. In the second illumination unit, the second illumination unit includes a second light source mounted on one of the substrates, and a direction in which light from the second light source is inclined in a direction perpendicular to the substrate as the second The optical path changing unit of the illumination light, wherein at least one of the light guides has at least one groove that internally reflects the light in the light guide body, and at least a portion of the inside of the groove portion is embedded with light reflecting white Light-reflective resin for fine particles. The present invention can be applied to a reference surface of the substrate on which the light guide body is formed, and has a concave portion that is recessed toward the side opposite to the reference surface, and the second light source is provided in the concave portion. In the present invention, the substrate may have a substrate body having a mounting opening, and a concave structure having the concave portion, and the concave structure may be detachably attached to a peripheral portion of the mounting opening. It is preferable that the concave structure is attached to the peripheral edge portion of the mounting opening by screw fitting, and the position in the thickness direction of the substrate can be adjusted in accordance with the state in which the screw is fitted. The concave portion may be integrally formed on the inner surface of the concave structural portion of the substrate. At least a portion of the inner surface of the concave portion may also serve as a reflecting surface for reflecting light from the second light source. At least a portion of the inner surface of the concave portion may also serve as a light absorbing surface for absorbing light from the second light source. Preferably, the optical path changing unit includes: an optical element that reduces the emission range of the light 201243211, and a light refraction element that refracts the light toward a direction perpendicular to a direction perpendicular to the substrate, and the light collecting element and the light collecting element The refractive element is formed in a posture along the aforementioned substrate. According to the present invention, since the light guide body is formed with the groove portion in which the light-reflective resin is embedded, the light guided in the light guide body is internally reflected on the inner surface of the groove portion, and π re-transmits the light in the light guide body, and then Use light. Therefore, the brightness of the area of interest can be improved. Since at least one groove portion for dividing the light guide body is provided on at least one of the light guide bodies, the groove forming position is not restricted by the shape of the light guide body, and therefore, the optical design is high in freedom. Therefore, the ease of assembly or processing is not impaired. Further, since a light-reflective resin containing light-reflecting fine particles which exhibit white light is used, it is difficult to produce a light-reflective resin, and absorption of light can improve light use efficiency. Since the light-reflective resin is white in the groove portion, it is difficult to attract attention, and it is difficult to restrict the appearance of the groove forming position. Therefore, it is excellent in designing the degree of freedom. This month is also applicable to the case where the light-reflecting resin is embedded in the groove portion, so that it can be applied to the light guide body of the sea, which is advantageous in terms of thinning or low cost of the device. Further, when the vehicle father forms a reflection structure on the end surface of the light guide body, the external force causes a reflection structure, which is less likely to occur, and is excellent in sturdiness. Brief Description of the Drawings 6 201243211 Fig. 1 is a front view showing a main part of a first embodiment of the lighting device of the present invention. Fig. 2 is a perspective view showing an example of a groove portion of a light guide body formed in the illumination device of Fig. 1. Fig. 3 is a cross-sectional view showing another example of the groove portion of the light guide body formed in the illumination device of Fig. 1. Figure 4 is a plan view showing the lighting device of Figure 1. Fig. 5 is a cross-sectional view showing the second illumination unit of the illumination device of Fig. [FIG. Fig. 6 is a cross-sectional view showing a light collecting element and a light refracting element of the illumination device of the second drawing. Fig. 7 is an enlarged cross-sectional view showing a light collecting element and a light refracting element of the illumination device of the second drawing. Fig. 8 is a cross-sectional view showing the entire lighting device of Fig. 1 and showing the A1 to A1 cross section of Fig. 4. Fig. 9 is a cross-sectional view showing the entire illumination device of Fig. 1 and showing the A2-A2 cross section of Fig. 4. Fig. 10 is a cross-sectional view showing the second illumination portion of the illumination device of Fig. 1 taken along the line X in the fourth diagram. Fig. 11 is a cross-sectional view showing the illuminating portion of the illumination device of Fig. 1 and is a cross-sectional view taken along the Y direction of Fig. 4. Fig. I2 is a perspective view showing the illumination unit of the third illumination unit of the illumination device of Fig. 1. Fig. 13 is a cross-sectional view showing an example of a substrate which can be used for the illumination device of Fig. 1. 201243211 Figure 14 is a plan view showing an example of a light guide that can be used for the illumination device of the second diagram. Fig. 15 is a plan view showing another example of a light guide which can be used for the illumination device of the second drawing. Fig. 16 is a plan view showing a second embodiment of the lighting device of the present invention. Fig. 17 is a plan view showing a third embodiment of the lighting device of the present invention. Fig. 18 is a plan view showing a fourth embodiment of the lighting device of the present invention. Fig. 19 is a plan view showing a fifth embodiment of the lighting device of the present invention. Fig. 20 is a perspective view showing the first illumination unit of the sixth embodiment of the illumination device of the present invention. Fig. 21 is a perspective view schematically showing a first illumination unit of a seventh embodiment of the illumination device of the present invention. Fig. 2 is a perspective view showing the first illumination unit of the eighth embodiment of the illumination device of the present invention. Fig. 23 is a plan view schematically showing a first illumination unit of a ninth embodiment of the illumination device of the present invention. Fig. 24 is a cross-sectional view schematically showing the illumination device having the first illumination portion of the previous figure. Figure 25 is a plan view showing the test apparatus. Figure 26 is a plan view showing the test apparatus. 201243211 Figure 27 shows a table of test results. Figure 28 is a graph showing the results of the test. Fig. 29 is a cross-sectional view showing the entirety of a tenth embodiment of the lighting device of the present invention. Fig. 30A is a cross-sectional view showing the second illumination unit of the illumination device of Fig. 29, and showing a state in which the concave structure is attached to the substrate body. Fig. 30B is a cross-sectional view showing the second illumination unit of the illumination device of Fig. 29, and is a state in which the height position of the concave structure is changed with respect to the state of the previous figure. Fig. 30C is a view showing a state in which the second illumination portion of the illumination device of Fig. 29 is in a state in which the concave structure is removed from the substrate body. Fig. 31 is a cross-sectional view showing the second illumination unit of the embodiment of the illumination device of the present invention. Fig. 3 is a cross-sectional view showing the second illumination unit of the embodiment of the illumination device of the present invention. Figure 33 is a cross-sectional view showing a second illumination unit in a thirteenth embodiment of the illumination device of the present invention. Fig. 34 is a schematic view showing a modification of the light guiding body. Figure 35 is a perspective view showing the light guide of the previous figure. Fig. 36 is a schematic view showing a modification of the light guide body. Fig. 37 is a view showing a schematic configuration of an example of a resistive film type input sensor. Fig. 38 is a schematic view showing an example of a pressure sensitive type diaphragm switch. 201243211 I: Embodiment 3 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings in accordance with preferred embodiments. (first embodiment) Fig. 1 is a cross-sectional view showing the main part of the illuminating device according to the first embodiment of the present invention, and showing a cross section (Ai - A1 cross section) along the X direction of Fig. 4 . Fig. 2 is a cross-sectional view showing an example of the groove portion 41 formed in the light guide body 12 of the illumination device 10. Fig. 3 is a cross-sectional view showing another example of the groove portion 41 of the light guide body 12 formed in the illumination device 1. Fig. 4 is a plan view of the lighting device. Fig. 5 is a cross-sectional view showing the second illumination unit 3 of the illumination device 10. Fig. 6 is a cross-sectional view showing the light collecting element 21 and the light refraction element 22 of the illumination device 1''. Fig. 7 is an enlarged cross-sectional view showing the light collecting element 21 and the light refractive element 22. Fig. 8 is a cross-sectional view of the entire lighting device 1A, and shows the A1 - A1 cross section of Fig. 4. Fig. 9 is a general cross-sectional view of the illuminating device 1A, and is a cross-sectional view showing the second illuminating portion 3 of the illuminating device 10, which is shown in Fig. 4, in the A2-A2 cross-section of Fig. 4, and is along the 4 is a cross-sectional view in the X direction. Fig. 11 is a cross-sectional view showing the second illumination unit 2 of the illumination device (1) in an exploded manner, and is a cross-sectional view taken along the Y direction of Fig. 4. Fig. 12 is a cross-sectional view showing the first illumination unit 2 of the illumination unit. The πth diagram is a cross-sectional view of an example of the substrate 1 used for the illumination device 1A. Fig. 14 is a plan view showing an example of the light guide body 12 which can be used for the illumination device 10. Fig. 15 is a plan view showing another example of the light guide body 12 that can be used for the illumination device 10. As shown in FIG. 1 , FIG. 4 , FIG. 8 , and FIG. 9 , the illumination device 10 includes a substrate 1 and a first illumination unit 2 that emits first illumination light, and is covered by the first illumination unit S] 10 201243211. The second illumination unit 3 that emits the second illumination light in the narrow range of the member 2, the cover portion 4, and the frame portion 5 to which the cover portion 4 is attached. The illumination split H) is provided, for example, at the top of the vehicle' can be used as an indoor light. As shown in Figs. 8 and 9, the cymbal device 1 can be installed in the vehicle by, for example, fixing the frame portion $ to the inner material 6 of the vehicle. As shown in FIGS. 4 and 9, the first illumination unit 2 has a sheet-like light guide body 12 disposed along one side of the substrate 1 (lower surface or surface, which may be referred to as a reference surface 1 & And introducing the light into the second light source u of the light guide body 12. The first illumination unit 2 can be used as an indoor unit for a wide range of illumination (for example, in a vehicle interior). The first light source 11 is composed of one side la or a plurality of light sources 11a attached to the substrate 1. In this example, as shown in Fig. 4, the second light source u is composed of the plural light sources 11a. The light sources 11a are arranged along one end edge portion na of the light guide body 12. One end edge portion 12a of the light source 1 la of this example is one of four sides of the light guide body 12 which is slightly rectangular in plan view, and is, in other words, a light guide body 12 having a substantially rectangular shape. A long side. The light source 11a may be disposed in a portion including a central portion in the longitudinal direction of the one end edge portion 12a. The number and position of the light source 11a are set such that the brightness of the first illumination light that is introduced into the light guide body 12 and emits light does not become uneven. As shown in Figs. 11 and 12, the light source 11a is provided such that the light-emitting surface lib is opposed to the end surface 12b of one end edge portion 12a of the light guide body 12. A light-emitting diode (hereinafter referred to as an LED) (light-emitting element) can be used as the light source 1 la. Further, the light-emitting element used as the light source 11a is not limited to an LED, and may be a cold cathode tube or the like. 201243211 The light guide body 12 is made of a transparent light-transmitting resin, and for example, an amine phthalic acid vinegar resin, an acrylic acid S resin, a polycarbonate S resin, a sulphuric acid resin, a polystyrene resin, or a polyaluminum resin can be used. Amine resin, synthetic rubber of polyamido phenyl acrylate (p MMA), urethane acrylate, and the like. When the thickness T 1 of the light guide body 12 is set to be the same as or larger than the height Η 1 of the light source 11a, the introduction efficiency of light from the light source 11a can be improved, and the brightness and illumination of the first illumination light can be improved. The thickness T1 of the light guide body 12 is preferably 0.5 mm or more (preferably 0.7 mm or more). By this means, even if a large-sized LED of a high-luminance type that can be used in accordance with the large area of the light guide body 12 is used as the light source 11a, the utilization efficiency of light from the light source 11a can be improved. When the thickness of the light guide body 12 is in the above range (0.5 mm or more), the height of the end surface 12b is extremely larger than the height of the light source 11a, so that the light incident rate from the end surface 12b to the light guide body 12 can be increased. Therefore, the brightness and the illuminance can be improved, and the area of the light guide body 12 can be increased. When the thickness T1 of the light guide body 12 is 2 mm or less (preferably 1.5 mm or less), the viewpoint of thinning the illuminating device 10 is preferable. The thickness T 1 of the light guide body 12 can be made almost the same as the height Η 1 of the light source 11a. The thickness 丁 1 and the height Η 1 may be different, but the difference between the thickness Τ 1 and the height Η 1 is preferably within 0.3 mm. Thereby, the incident rate of the light from the light source 11a to the light guide body 12 can be increased. As shown in Figs. 1 and 2, the lower surface 12d of the light guide body 12 is formed with a groove portion 41 for partitioning the light guide body 12. 12 201243211 The groove portion 41 can be formed in a shape in which the width gradually decreases toward the depth direction (above the second drawing). Further, the cross-sectional shape of the groove portion 41 is not limited thereto, and may be constant in the depth direction or a shape having a wide width in the depth direction. The groove portion 41 may be formed by penetrating the light guide body 12 as shown in Fig. 2, or may have a depth that does not reach the upper surface 12c as shown in Fig. 3. The groove portion 41 shown in Fig. 3 has a V-shaped cross section. The depth of the groove portion 41 is not particularly limited, but is preferably 50% or more of the thickness of the light guide body 12 from the viewpoint of improving the reflectance. The width of the groove portion 41 may be, for example, 0.01 to 2 mm. The groove portion 41 may be formed on at least one surface of the light guide body 12. That is, the groove portion 41 may be formed only on either of the lower surface 12d and the upper surface 12c of the light guide body 12, or may be formed on both the lower surface 12d and the upper surface 12c. The method of forming the groove portion 41 is not particularly limited, but is suitable for laser processing or the like. The groove portion 41 shown in Fig. 2 has a groove-like structure formed by the inner surfaces 41a, 41a of the slit formed by the light guide body 12 and the surface la of the substrate 1. As shown in Fig. 4, the formation position of the groove portion 41 (the position at which the plane is formed) can divide the light guide body 12 into a plurality of regions. In the present example, the groove portion 41 linearly extends in the Y direction from the vicinity of both ends of the formation range of the first light source 11 in the one end edge portion 12a to reach the end edge portion 12f. The pair of groove portions 41 divide the inner region R1 (first region) and the outer regions R2 and R2 (second region) which are sandwiched by the pair of grooves 41. The position at which the groove portion 41 is formed is not particularly limited, and may be formed at any position of the light guide body 12. Further, in Fig. 4, the 'X direction is a direction parallel to one end edge portion 12a of the long side of the slightly rectangular light guide I], and the Y direction is a direction orthogonal to the X direction (short side direction). As shown in Fig. 2 and Fig. 3, a light-reflective resin 42 containing white light-reflecting fine particles is embedded in the inside of the groove portion 41. For the light-reflective fine particles contained in the light-reflective resin 42, for example, titanium oxide (Ti〇2) or calcium carbonate (CaCCh) can be used, but titanium oxide is particularly preferable. The light-reflective fine particles function as a white pigment, and the light-reflective resin 42 appears white. The titanium oxide content in the light-reflective resin 42 when titanium oxide is used is preferably 5% by mass or more, and 5 to 50% by mass (preferably 1 〇 to 4 〇% by mass). In order to obtain white reflected light, it is necessary to scatter the visible light in its entirety. The diameter of the titanium oxide is preferably from 10 nm to 0.5 μm, considering the relationship between the wavelength of the scattering and the particle diameter of the titanium oxide. The resin used for the light-reflective resin 42 for the light-reflective resin 42 is not particularly limited, and for example, an acrylate resin, an amino phthalate resin, a vinyl acetate resin or the like can be used. The light-reflective resin 42 is preferably embedded in the groove portion 41 and covers at least a part (preferably all) of the inner surface 41a of the groove portion 41. In the examples shown in Figs. 2 and 3, the inner surface 41a of the groove portion 41 is entirely covered with the light-reflective resin 42. The light reflecting resin 42 contacts the inner surface 41a', whereby the reflection efficiency of the inner surface 41a can be improved. The light reflective resin 42 may be filled in the entire inner space of the groove portion 41, but may be filled only in a part of the inner space of the groove portion 41. In the case of the light-reflective resin 42 in the case of the entire surface of the groove portion 41, the space is left in the lower portion 12d side and is buried in the groove portion 41. The light-reflective resin 42 may be embedded only in the inside of the groove portion 41. However, as shown in the example, the light-reflective resin 42 may have a main body portion 42a that is located in the light-reflective resin 42 and covers the inner surface 41a of the groove portion 41, and the main body portion 42a. The shape of the extending portion 42b of the lower surface 12d is extended outward along the lower surface 12d and with a predetermined width. As shown in FIGS. 2 and 3, the white light-reflective resin 42 is embedded in the groove portion 41, and the light L conducted in the inner region R1 (see FIG. 4) is internally formed on the inner surface 41a of the groove portion 41. The reflection is thus reused in the inner region R1, and light leakage to the outer region R2 is suppressed. As shown in Fig. 12, the upper surface - 12c (one side or the inner side) of the surface of the substrate 1 side of the light guide body 12 may be formed to scatter incident light to the lower surface 12d (the other surface or surface) of the light guide body 12. The light take-out portion 16 taken out at the side (exit). The light extraction portion 16 may be formed in a portion or all of the upper surface 12c. The light extracting portion 16 is formed in a wide range, whereby the light in the light guide body 12 can be taken out as the surface light (first illumination light) on the lower surface 12d side. The first illumination unit 2 functions as a planar light-emitting device. The light extraction portion 16 is uniformly formed over the entire surface of the upper surface 12c, whereby the light-emitting body 12 can be substantially uniformly illuminated. The light extraction portion 16 can be formed, for example, as a plurality of minute dot ink layers (hereinafter simply referred to as minute dots) formed by printing. The planar shape of the minute dots may be any shape such as a circle, a circle, a polygon (a rectangle, etc.). The minute dots can be formed by a printing method such as a screen printing method, a gravure printing method, or a pad printing method. 15 201243211 The ink constituting the minute dots is suitable for, for example, a white ink using titanium oxide as a pigment. Titanium oxide functions as a white pigment, so the aforementioned ink appears white. When the content of the titanium oxide of the ink is 5 to 50% by mass or more, preferably 1 to 40% by mass or more, high luminance can be obtained. The titanium oxide is preferably a rutile type or an anatase type, particularly preferably a rutile type titanium oxide. In order to illuminate white light, it is necessary to scatter the visible light all over the place. Here, considering the relationship between the wavelength of the scattering and the particle diameter of the titanium oxide, the particle diameter of the titanium oxide is preferably 10 nm to 5·5 μηι. Further, the light extraction portion is not limited to the ink layer, and may be a notch formed on the surface of the light guide, or may be a rough surface formed by sandblasting or the like. As shown in Figs. 8 and 9, the other surface lb (upper or inner side) of the substrate 1 is mounted with electronic components such as lighting of the light sources 11, 13 and semiconductor components such as light-off adjustment, etc. (17a to 17c) ). The electronic component 17 can be used by a known person. As shown in Fig. 13, the substrate 1 is suitable for a person having a touch panel 30 (detector). The touch panel 30 has an input sensor 31 and an anti-surname layer 32 (coated resin layer) formed on one side thereof. The input sensor 31 is a sensor that detects the proximity or contact of the detected object such as a finger of a person. Here, the input sensor 31 may be a capacitive input sensor, and a wiring layer 34 is provided on one surface of the substrate 33. Since the capacitive input sensor 31 has a simple structure composed of one substrate 33 and the wiring layer 34, it can be made thinner. The base material 33 is a plate material formed of a resin such as PET. The base material 33 201243211 may be a rigid substrate made of a flexible substrate made of PEN (polyethylene 2,6 naphthalate) or polyimine or a glass epoxy resin. The wiring layer 34 has, for example, a plurality of electrodes 34a. When a human finger or the like is approached, an electrostatic capacitance is formed between the detected object and the electrode 34a, and the electrostatic capacitance changes depending on the opposing area or the separation distance between the detected object and the electrode 34a. Therefore, the detected object and the electrode 34a form a variable capacity portion. The change in the electrostatic capacitance of the variable-capacity portion is detected by the detecting means (not shown), and the control unit (not shown) grasps the input of the detected object, its position, and the like based on the detected value. The wiring layer 34 can be formed by, for example, printing a silver paste containing silver particles on a substrate 33 by screen printing. The wiring layer 34 can also be formed by etching a copper foil laminated on the base material 33. The resist layer 32 is formed by ensuring electrical insulation between the wiring layers 34 and preventing the oxidizer from adhering to the substrate 33 and the wiring layer 34 on one side of the input sensor 31 (the surface on the light guide body 12 side). As the resist layer 32, for example, a general-purpose solder resist can be used. When the touch panel 30 is used, the light source can be turned on or off by the user, for example, by detecting the user, and the user can use the hand to cover the light source to turn on or off the light, or to move the hand to adjust the amount of light or the illumination. How to use the location, etc. Further, the substrate 1 may be a printed wiring board such as a PCB (Printed Circuit Board) or an FPC (Flexible Printed Circuit). In the present invention, the touch panel 30 may be separately provided on the side lb side of the substrate 1 separately from the substrate 1 (see Fig. 13). Further, in the touch panel 30 (refer to Fig. 13), the capacitive input 17 201243211 is used as the sensor 31, but the input sensor may be other methods such as a resistive film type input sensor. Fig. 37 is a view showing an example of a touch panel using a resistive film type input sensor, the touch panel 160 (detector) having a transparent substrate 161 formed on the opposite surface 161a, and a pair of substrates The lower surface 162 of the transparent conductive film 164 is formed on the surface 162a. A plurality of dot spacers 166 are formed on the transparent conductive film 164 of the lower substrate 162. The upper substrate 161 and the lower substrate 162 are disposed such that the transparent conductive films 163 and 164 are opposed to each other with a space therebetween. A reflection layer 165 (reflector) is formed on the upper surface 161b of the upper substrate 161. The reflective layer 165 functions as a reflector that reflects light leaking from the light guide 12 to the lower side. When the reflective layer 165 is made of the above-described white material, the effect of reflecting the light leaked by the light guide body 12 can be enhanced. Reference numeral 167 is an adhesive layer. In the touch panel 160, the upper substrate 161 is bent downward by the object to be detected (the user's finger or the like), and the transparent conductive films 163 and 164 are brought into contact with each other to be turned on, and an input operation or the like is detected. In the present invention, the touch panel 30 can also be replaced with a pressure sensitive diaphragm switch (detector). Fig. 38 shows a diaphragm switch 1700 having a pressure-sensitive type switch having a wiring layer 173 formed on the opposite surface 171a, a substrate 17 on the upper surface of the upper electrode 176, and a wiring layer 174 formed on the opposite surface 172a. And lower electrode 177 & lower substrate 172. The upper substrate 171 and the lower substrate 172 are arranged such that the electrodes 176 and 177 face each other with a space therebetween.

18 201243211 A resist layer 175 (coating resin layer) is formed on the upper surface 171b of the upper substrate 171. The resist layer 175 functions as a reflector that reflects light leaking downward from the light guide body 12. When the resist layer 175 is made of the above-described white material, the effect of reflecting the light leaked by the light guide body 12 can be enhanced. Reference numeral 178 is an adhesive layer. In the diaphragm switch 170, when the upper substrate 171 is deflected downward by the pressing of the detected object (the user's finger or the like), the upper electrode 176 abuts against the lower electrode 177, and the conduction detects the input. Operation, etc. As shown in Fig. 9, Fig. 11, and Fig. 12, a light-shielding mask 18 having a light-blocking property can be provided on the lower surface side including the first light source 11 and one end edge portion 12a of the light guide body 12. By providing the photomask 18, light from the first light source 11 is prevented from leaking to the outside, and the introduction efficiency of the light to the light guide body 12 can be improved. Further, the brightness of the first light source 11 and its vicinity can be prevented from being locally high. As shown in FIG. 1 and FIG. 5 to FIG. 8, the second illumination unit 3 has a second light source 13 attached to one of the substrates 1 and a light source from the second light source 13 facing perpendicular to The direction in which the direction VI of the substrate 1 is inclined is referred to as the optical path changing unit 14 of the second illumination light. The second illumination unit 3 can be used as a map light (spotlight) for selectively illuminating a narrow range (for example, the hand of a driver or a passenger seat). As shown in Fig. 1, Fig. 5, Fig. 8, and Fig. 10, the second light source 13 is mounted on one side of the substrate 1. In this example, the two second light sources 13 are provided on the substrate 1 so as to be spaced apart from each other. As the second light source 13, a light-emitting diode (hereinafter referred to as an LED) (light-emitting element) can be used. Further, the light-emitting element used as the second light source 13 may be a cold cathode 19 201243211 pole tube or the like. The number of the second light sources 13 is not limited to the illustrated example, and may be one or three or more. The light guide body 12 is formed with an opening 15 that can accommodate the second light source 13. As shown in Fig. 14, the shape of the plan view of the opening portion 15 is not particularly limited, and may be a circular shape as shown in the figure, or may be other shapes such as a circular shape, a rectangular shape, or the like. Further, the opening portion 15 is not limited to the closed shape surrounding the second light source 13 (see Fig. 14), and as shown in Fig. 15, the opening portion of the edge portion 12e of the light guide body 12 may be formed. As shown in Fig. 5, the opening portion 15 of this example is formed such that the diameter is gradually increased from the upper surface 12c toward the lower surface 12d. That is, the inner surface 15b of the peripheral edge portion 15a of the opening portion 15 is inclined so as to gradually move away from the second light source 13 from the upper surface 12c toward the lower surface 12d. In the opening portion 15, the light reflected by the inner surface 15b of the peripheral edge portion 15a is directed downward, and therefore the amount of light of the second illumination light is increased. At least a portion of the inner surface 15b of the peripheral portion 15a serves as a reflecting surface for reflecting light from the second light source 13. The inner surface 15b is preferably a full reflection surface. The reflecting surface of the inner surface 15b is preferably such that the light from the second light source 13 can be efficiently reflected. For example, the inner surface 15b can be used as a reflecting surface using a coating material containing metal powder (for example, a mirror ink). The inner surface 15b is used as a reflecting surface to form a metal thin film on the inner surface 15b by a known method. By using the inner surface 15b as a reflecting surface, the light from the second light source 13 is more efficiently directed toward the optical path changing portion 14, and the light use efficiency can be improved. At least a portion of the inner surface 15b of the peripheral portion 15a functions as a light shielding surface for blocking light from the first light source 11. Thereby, light from the first light source 11 conducted inside the body 12 of the light guide 20 201243211 can be prevented from leaking from the inner surface 15b, and the utilization efficiency of light from the first light source 11 can be prevented from being lowered. The reflecting surface that reflects the light from the second light source 13 also functions to block the light blocking surface of the light from the first light source 11. Further, when the reflecting surface is formed on the inner surface 15b, the light from the first light source 11 can be reflected in the light guiding body 12, and the utilization efficiency can be improved. As shown in Figs. 5 to 7, the optical path changing unit 14 includes a light collecting element 21 that narrows the emission range of the light from the second light source 13, and a light refraction element 22 that refracts light from the second light source 13. The light collecting element 21 may be designed in accordance with the wide angle of light from the second light source 13 and the angle of light required by the light emitted from the light collecting element 21, etc., or may be a spherical surface, a spherical surface, or a paraboloid. One of the curved surfaces of the cylinder, the surface, the cylindrical surface, and the like is a shape of the main shape, or the surfaces may be combined in a plurality of shapes. As shown in Fig. 6, the light collecting element 21 of the illustrated example is a Fresnel lens in which a plurality of convex lenses are combined into a concentric shape, and has a central portion 21a and a first outer peripheral portion formed on the outer peripheral side of the central portion 21a. 21b, a second outer peripheral portion 21c formed on the outer peripheral side of the first outer peripheral portion 21b, and a third outer peripheral portion 21d formed on the outer peripheral side of the second outer peripheral portion 21C. The central portion 21a and the outer peripheral portions 21b to 21d are lenses having a curved surface on the lower surface 21e side. The outermost peripheral portion of the second outer peripheral portion 21c is thinner than the innermost peripheral portion of the third outer peripheral portion 21cl, and the outermost peripheral portion of the first outer peripheral portion 21b is thinner than the innermost peripheral portion of the second outer peripheral portion 21c, and the outermost periphery of the central portion 2la The portion is thinner than the innermost peripheral portion of the second outer peripheral portion 21b. Due to this configuration, the light collecting element 21 of this example is thinner than the general convex lens 21 201243211 type. The upper surface 21f of the light collecting element 21 is a flat surface along one side la of the substrate 1, and is almost parallel to the surface la (see Fig. 5). Therefore, the light collecting element 21 is in the posture along the substrate 1. Preferably, the light collecting element 21 can parallelize the light from the second light source 13. In the examples shown in Fig. 6 and Fig. 7, the outgoing light L1 from the second light source 13 is the light L2 of the parallel light by the light collecting element 21. Further, if the light collecting element 21 is such that the emission range of the light from the second light source 13 can be completely reduced, it is not necessary to parallelize. As shown in Fig. 5 to Fig. 7, the optical path changing unit 14 has a structure in which the light refraction element 22 is provided on the lower surface side (the side opposite to the second light source 13 side) of the light collecting element 21. The light-refracting element 22 refracts the light from the second light source 13 and faces in a direction inclined with respect to the direction VI perpendicular to the substrate 1. In the second illumination unit 3 (3A) located on the left side in Fig. 1, the second illumination light LA obliquely to the left with respect to the direction v丨 can be obtained by the light refraction element 22, and the second illumination unit located on the right side can be obtained. In 3(3B), the second illumination light LB which is inclined to the right with respect to the direction V丨 is obtained by the light refraction element 22. The angle (the inclination angle 第 shown in Fig. 1) of the second illumination lights LA and LB with respect to the direction VI perpendicular to the substrate 1 is, for example, 1. Above, 45° or less. The second angle of inclination of the moonlight is, for example, the angle of the direction force in the direction of the light with respect to the center of the beam of the second illumination light. In the figure, the second illumination light LA and LB are inclined in the left-right direction, but the inclination direction of the second illumination light is not limited thereto, and the light-refracting element 22 201243211 22 may be set so that the second illumination light is directed in the direction of the figure. Tilt in directions other than. For example, the second illumination light may be inclined in a direction perpendicular to the paper surface in Fig. 1 (front side or inner side with respect to the paper surface). As shown in Figs. 6 and 7, the optical refractive element 22 has a crotch portion 23 which refracts or pluralizes light. In the illustrated example, a plurality of crotch portions 23 are formed on the upper surface 22a' of the light-refracting element 22. One of the crotch portions 23 (inner peripheral surface 23a) (see Fig. 7) is inclined in the direction v1. The direction of inclination of the inner peripheral surface 23a can be determined in accordance with the inclination direction of the second illumination light La necessary. For example, the inner peripheral surface 23a of the crotch portion 23 of the second illuminating portion 3 (3A) located on the left side in Fig. 1 is inclined downward toward the right as shown in Figs. 5 to 7 . The outer peripheral surface 23b of the crotch portion 23 can serve as a face along the direction VI. The lower surface 22b of the light-refracting element 22 is a flat surface along one side la of the substrate ,, and is substantially parallel to the surface la (see Fig. 5). Therefore, the light refracting member 22 is formed in a posture along the substrate 1. As shown in FIGS. 4 to 6 and 8 , the light collecting element 21 and the light refractive element 22 are fitted into the mounting opening portion 4 a formed in the lower plate portion 4 b of the lid portion 4, and can be fixed to the mounting opening portion 4a. Peripheral department. In this example, the lower surface 22b of the light-refracting element 22 and the lower surface 4e (the surface opposite to the second light source 13 side) of the lower portion of the lid portion 4 are flush with each other. The lower surface 22b of the light-refracting element 22 may also be located further inside than the lower surface 4e of the lower plate portion 4b (above the lower portion 4e in Fig. 5 and Fig. 6). Since the light collecting element 21 and the light refractive element 22 are provided in the mounting opening portion 4a of the lid portion 4, they are not protruded by the lid portion 4. Therefore, it is difficult to cause damage of the light collecting element 21 and the light refractive element 22 due to an external force. 23 201243211 Further, the positional relationship between the light collecting element 21 and the light refractive element 22 is not limited to the example of the drawing. The light collecting element 21 may be provided on the lower surface side of the light refractive element 22. As shown in FIGS. 8 and 9, the cover portion 4 covers and protects the substrate 1, the first illumination portion 2, and the second light source 13, and has a flat lower plate portion 4b and a side plate portion formed on the periphery thereof. 4c. The lid portion 4 can be attached to the frame portion 5 by the locking claw portion 4d formed on the side plate portion 4c toward the outside, being locked to the locking hole 5a of the frame portion 5. The cover portion 4 is preferably made of a transparent material that can transmit light, such as resin or glass. Next, the illumination light obtained by the first illumination unit 2 and the second illumination unit 3 of the illumination device 10 will be described. As shown in FIG. 4, FIG. 9, and FIG. 12, in the first illumination unit 2, the light emitted from the first light source 11 (light source 11a) is incident on the light guide body 12' from the end surface 12b of the one end edge portion 12a. It is reflected to the upper surface 12c, the lower surface I2d, and the like, and is mainly conducted in the light guide body 12 toward the end edge portion 12f (see FIGS. 4 and 9). A portion of the light conducted in the light guide body 12 is scattered by the light extraction portion 16 and taken out to the lower 12d side. Since the light extraction portion 16 is formed to cover a wide range of the upper surface 12c of the light guide body π, the first illumination light that emits light on the surface can be obtained. The first illumination light is used to illuminate a wide range (for example, the entire interior of the vehicle) in which the illumination device 1 is provided. Therefore, the first illumination unit 2 can be used as an indoor lamp. The light emitted from the first light source 11 is introduced into the inner region R1 of the light guide body 12 as shown in Fig. 4, and is conducted in the inner region R1. As shown in Fig. 2 and Fig. 3, the light l conducted in the inner region ri is internally reflected on the inner surface 41a of the groove 24 201243211 portion 41, so that light can be again transmitted into the light guide body 12' and the light can be reused. . Therefore, the brightness of the inner area can be improved. Further, since the light L is internally reflected by the inner surface 41a of the groove portion 41, it is difficult to cause conduction to the outer region R2. In the first illuminating unit 2, the groove portion 41 is formed, and the target region (the inner region R1) can be divided by the other region (outer region R2) to increase the brightness. Since the formation position of the groove portion 41 is not restricted by the shape of the light guide body 12, it can be an optical design with high degree of freedom. Therefore, the optical characteristics of the first illumination unit 2 can be improved without impairing the ease of assembly or processing. Further, since the reflective resin 42 containing the light-reflecting fine particles which are white is used, it is difficult to cause the light absorption by the light-reflective resin 42 to improve the utilization efficiency of the light. Since the light-reflective resin 42 is white, the groove portion 41 is less conspicuous, and the position of the groove portion 41 is less likely to be restricted in appearance. Therefore, it is excellent in design freedom. Further, since a simple structure in which the light-reflective resin 42 is embedded in the groove portion 41 is employed, it is also possible to use a thinner light guide body 12, which is advantageous in terms of thinning or low cost of the device. Further, compared with the case where the reflection structure is formed on the end surface of the light guide body, it is difficult to damage the reflection structure due to the external force, and the durability is also excellent. As shown in FIG. 1 and FIG. 4 to FIG. 8 , in the second illumination unit 3 , the light emitted from the second light source 13 is diffused toward the emission direction (see FIGS. 6 and 7 ). However, it is incident on the light collecting element 21 and the emission range is reduced. In the example of 201243211, the light L2 transmitted through the light collecting element 21 is parallel light. As shown in Fig. 6 and Fig. 7, the light L2 is directed to the light-refracting element 22, enters the inner peripheral surface 23a which is the inclined surface of the weir portion 23, passes through the light-refracting element 22, and is emitted from the lower surface 22b as the light L3. By the refraction of the light-refracting element 22, the light L3 is directed in a direction inclined to the direction VI. The second illumination light selectively illuminates a range narrower than the first illumination light (for example, at the hand of a driver or a passenger seat). Therefore, the second illumination unit 3 can be used as a map light (spotlight). In the illuminating device 10, the optical path changing portion 14 of the second illuminating unit 3 has the light collecting element 21 and the light refracting element 22'. Therefore, light having a relatively narrow emission range can be incident on the light refracting element 22 by the light collecting element 21. A second illumination light that is inclined at a considerable angle is obtained. Thereby, since it is not necessary to arrange the light collecting element 21 and the light refraction element 22 obliquely, it is possible to achieve thinning and miniaturization of the apparatus. Moreover, since the light collecting element 21 and the light refractive element 22 can be placed along the substrate 1, the apparatus can be formed into a flat plate structure. In the illumination device 1 , both the first illumination unit 2 and the second illumination unit 3 are provided on one substrate 1 , and the light guide 12 is also disposed along the substrate 1 . Therefore, it is necessary to guide light when a plurality of substrates are required. When the body is tilted, the device configuration is simple, and thus it is also suitable for thinning and miniaturization. The illuminating device 10 can be manufactured by a simple process of providing the light guide body 12, the light sources 11, and the like on one side of the substrate 1 on which the electronic component 17 is mounted in advance, and therefore has an advantage of being easy to manufacture and low in cost. Further, since the second illumination unit 3 is provided on the substrate 1, even if it is used high

26 201243211 The output second light source 13 can also dissipate the heat generated by the light source π to the entire substrate to prevent local temperature rise and ensure stable operation. In particular, both the first illumination unit 2 and the second illumination unit 3 are provided in! Therefore, even when the high-output persons are used as the light sources 11 and 13, the heat generated by the light sources 11 and 13 can be dispersed to the entire substrate 1, and the local temperature can be prevented from rising, thereby ensuring the stable operation. In addition, the light collecting element 21 and the light refracting element 22 are in a range in which the thickness and size of the illumination device 10 can be reduced, and it is possible to incline in the direction of the second illumination light with respect to the substrate 。. (Second Embodiment) Fig. 16 is a plan view showing a lighting device according to a second embodiment of the present invention. In the following description of the embodiments, the same components as those in the first embodiment are denoted by the same reference numerals, and their description will be omitted. In the present embodiment, the groove portion 41 is formed in a rectangular frame shape, and one of the positions near the both ends of the formation range of the first light source 11 from the one end edge portion 12a extends linearly in the Y direction toward the other end edge portion 12f. The main portions 41A and 41A and the other end portions 12 of the connecting main portions 41A and 41 are formed by the connecting portions 41B between the end portions. The light reflective resin 42 is buried inside the groove portion 41. The joint portion 41B is formed along the other end portion 12f at a position spaced apart from the end edge portion 12f by a predetermined distance. The other configuration can be the same as that of the illumination device 10 of the first embodiment shown in Fig. 4 and the like. In the present embodiment, the main portion 41A, 41A and the inner region R3 (first region) surrounded by the connecting portion 41B can be divided into other regions (outer region R4) 27 201243211 to increase the brightness. Since the groove portion 41 has the joint portion 41B', it is possible to achieve high brightness even in the vicinity of the joint portion 41B which is away from the is source 11. (Third Embodiment) Fig. 17 is a plan view showing a lighting device according to a third embodiment of the present invention. In the present embodiment, the groove portion 41 is formed along the peripheral edge portion of the light guide body 12 from the vicinity of both ends of the formation range of the first light source "i" of the one end edge portion i2a. The groove portion 41 is guided by the range in which the first light source 11 is formed. The entire peripheral edge portion of the optical body 12 is formed at a predetermined distance from the peripheral edge portion. The light-reflective resin 42 is embedded in the groove portion 41. The other configuration can be made as in the first embodiment shown in Fig. 4 and the like. In the present embodiment, the inner region R5 (first region) surrounded by the groove portion 41 and the other region (outer region R6) (second region) can be divided and brightened. The inner region R5 can be a culvert. The light-emitting area of the first illumination light is increased in a wide area of the light guide body 12. (Embodiment 4) FIG. 18 is a plan view of the illumination device according to the fourth embodiment of the present invention. In the embodiment, the plurality of light sources Ha constituting the first light source 11 are arranged in a range including almost the entire length of one end edge portion 12a of the light guide body 12, and the first embodiment shown in Fig. 4 and the like. The lighting device 1 is different. The inside of the groove 41 42. In the present embodiment, the light reflective resin, the light from the first light source 11 is introduced into the inside than the regions R1, R2 also introduced into the outer region, the outer region R2 may also be obtained by the first illumination

28 201243211 Light. (Fifth Embodiment) Fig. 19 is a plan view showing a lighting device according to a fifth embodiment of the present invention. This embodiment is different from the second embodiment in that the groove portion is doubled. The light guide body 12 is located inside the first groove portion 41 at a predetermined distance from the first groove portion 41, and a second groove portion 51 having a rectangular shape is formed along the groove portion 41. That is, a double groove portion is formed. The second groove portion 51 is formed by the main portions 5ia and 51A formed at a distance from the main portions 41 and 41A to the inner portions 41 and 41A, and the inner portion of the connecting portion 41B is spaced apart from the connecting portion 41B. Connecting portion 51B. * The second groove portion 51 can be formed by laser processing or the like, and light is embedded therein. The reflective resin 42. In the present embodiment, the inner region R7 (first region) of the second groove portion 51 and the other region (outer region R8) can be divided and increased in brightness. Further, by the double-shaped groove portions 41 and 51, the effect of preventing light leakage from the inner region R7 to the outer region R8 can be enhanced, and the inner region R8 can be made brighter. Further, the groove portion may have a multiple structure of three or more. (Embodiment 6) Fig. 20 is a perspective view showing a first illumination unit of the illumination device according to the sixth embodiment of the present invention. In the present embodiment, the groove portion 41 is constituted by the pair of main portions 41C and 41C and the connecting portion 41D, and the pair of main portions 41C and 41C are respectively oriented from the positions near the ends of the end portion 12a to the end of the 201243211 toward the other end portion 12f. Further, the side edge portions 12g and 12g extend linearly, and the connecting portion 41D connects between the end portions of the main portion 41C' 41C on the side of the end edge portion 12f. The light reflective resin 42 is buried inside the groove portion 41. In the present embodiment, the main portions 41C and 41C and the inner region R9 (first region) surrounded by the connecting portion 41D and the other region (outer region R10) (second region) can be divided and increased in brightness. (Seventh Embodiment) Fig. 21 is a perspective view showing a first illumination unit of the illumination device according to the seventh embodiment of the present invention. The first illumination unit shown here has a light guide body 12, an end side light source 11A provided on one end edge portion 12a of the light guide body 12, and a other end side light source provided on the other end edge portion 12f of the light guide body 12. 11B and a control unit 43 for independently controlling the lighting and turning off of the light sources 11A and 11B. In the present embodiment, the groove portion 41 is formed of one of the main portions 41E and 41E and the connecting portion 41F that connects the intermediate portions of the main portions 41E and 41E in the longitudinal direction from the one end edge portion 12a to the other end edge portion 12f. The region between the main portions 41E and 41E can be divided into one end side region R11 (first region) on one end edge portion 12a side and the other end side region R12 on the side edge portion 12f side by the joint portion 41F (second region). The light reflective resin 42 is embedded in the inside of the groove portion 41. The one end side light source 11A is disposed at a position where the light can be guided to the one end side region R11, and the other end side light source 11B is disposed at a position where the light can be guided to the other end side region R12. In the present embodiment, not only the one end side region R11 and the other end side region R12 but also the other regions can be divided and brightened, and the control unit 43 can be used independently.

30 201243211 « The lighting and turning off of the one end side light source 11A and the other end side light source iiB are controlled, whereby the light emission of the one end side region R1 1 and the other end side region R12 can be individually adjusted. Further, in the present embodiment, two light sources 11A and 11B are used, but the number of light sources is not limited thereto, and may be any number of three or more. Further, the number of regions divided by the groove portion is not limited to two, and may be any number of three or more. If the number of light sources and regions is 3 or more, one of the plurality of light sources may be used to introduce light into one region, and one of the other light sources may direct light into other regions. (Embodiment 8) Fig. 22 is a perspective view showing a first illumination unit of the illumination device according to the eighth embodiment of the present invention. In the present embodiment, the groove portion 41 has a shape of the base portion 41G and the extending portions 41H, 41 ,, the base portion 41G is along the base portion 41G of the one end edge portion i2a, and the extending portions 41 Η, 41H are oriented from the both ends thereof toward the one end edge The portions 12a are spaced apart from each other and extend in a direction crossing the base portion 41G. The light-reflective resin 42 is embedded in the inside of the groove portion 41. The number of formation of the groove portion 41 may be one or plural. In the present embodiment, the inner region of the groove portion 41 can be made brighter. Since the position at which the groove portion 41 is formed is not limited, it is possible to increase the brightness of any portion of the light guide body 12. (Ninth embodiment) Fig. 23 is a plan view schematically showing a first illumination unit of the illumination device according to the ninth embodiment of the present invention. Fig. 24 is a cross-sectional view schematically showing an illumination device having the aforementioned first illumination portion. As shown in Fig. 24, the lighting device is an electronic device such as a mobile phone, a information carrying terminal 31 201243211 (PDA), a personal computer, etc., having: The illumination unit 2 includes a sheet switch 61 provided on the lower surface I2d side of the light guide body 12 of the first illumination unit 2, and a key pad (not shown) provided on the upper surface 12c side of the light guide body 12. The sheet switch 61 is provided with a plurality of central contact portions 63, an annular contact portion 65 surrounding each of the central contact portions 63, and a dome covering each of the contact portions 63, 65 on the upper surface 62a (one surface) of the substrate 62. Shaped metal plate 64. The metal plate 64 is pressed against the center contact portion 63 by pressing the operation key of the key ,, and the center portion is turned downward to make the center contact portion 63 and the annular contact portion 65 conductive. The central contact portion 63, the annular contact portion 65 surrounding it, and the metal sheet constitute a pressure sensitive switching element 66. As shown in Fig. 23, the first illumination unit 2 has a light guide 12 and a first light source 11 through which light is guided. The light guide body 12 corresponding to the region 19 (hereinafter referred to as the keypad 19) of the operation key of the aforementioned key pad is formed with the light extraction portion 16. In the upper surface 12c of the light guide body 12, a groove portion 4 is formed in the vicinity of the i or a plurality of key regions 19 which are located farther away from the i-th light source u, and is formed in four sides of the slightly rectangular key region 19, It is formed in a slightly L-shape along two sides located away from the i-th source position. The light reflective resin 42 is embedded in the inside of the groove portion 41. The example towel 'are arranged in a matrix of 4 rows and 3 columns of matrix material i2" in the key area 19A to 19D which are closest to the column of the i-th light source U (the leftmost column of Fig. 23), and The key areas 19D to 19F which are farthest from the line of the light source u (the lowermost line of Fig. 23) are formed with the groove portions 41, respectively. 32 201243211 The groove 41 is formed in a slightly sub-shape and is composed of a first extension portion *1 j and a second extension portion 41K, and the first extension portion 41J is from the lower side of the key region 19 as below at a predetermined distance. The lower side 19a is formed, and the second extension 4ΐκ is formed from the left side 19b of the keypad 19 to the left along the left side 19b at a predetermined distance. The extending portions 411 and 41 of the groove portion 41 are formed along the side 19a and 1% away from the side of the second light source 靠近 near the keypad 19, and thus are incident on the light guide body 12 by the ith light source u, and are conducted to the guide. The light in the surface direction of the light body 12 is reflected inside the groove portion w, and the key region 19 can be made brighter. (10th embodiment) Fig. 29 is a cross-sectional view of the illumination device 11A according to the embodiment of the present invention. The illuminating device 110 is provided with a concave structural body 8 having a concave portion 8d on the substrate 1. The second light source 13 is provided in the concave portion 8d of the concave structure 8. As shown in Figs. 30A to 30C, the substrate 1 has a flat substrate body 7 on which the opening portion 7a is formed, and a concave structure 8 that is attached to the substrate body 7 by plugging the mounting opening portion 7a. The shape of the plan view of the mounting mouth portion 7a is preferably circular. Further, the shape of the mounting opening portion 7a may be a rectangle, a polygon, or the like. The mounting mouth portion 7 can be formed in the substrate 1 where the electronic component 17 or wiring is not required (empty accommodation chamber). As shown in Fig. 30A, the concave structure 8 may have a shape having a top plate portion 8a and a side plate portion 8b extending from the peripheral edge portion 8c. The top plate portion 8a may be formed in an annual plate shape. The plan view shape of the top plate portion 8 & can be made to correspond to the shape of the mounting opening portion 7a of the substrate body 7, for example, a circular shape, a rectangular shape, or the like. 33 201243211 The second light source 13 is provided on the lower surface 8e of the top plate portion 8a. The shape of the plan view of the side plate portion 8b can be made into a shape corresponding to the mounting opening portion 7a of the substrate body 7, for example, a circular shape, a rectangular shape, or the like. The side plate portion 8b of the illustrated example has a shape (e.g., a cylindrical shape, a rectangular tube shape, or the like) that extends vertically (or slightly perpendicularly) with respect to the top plate portion 8a. The side plate portion 8b may have another shape, for example, a shape in which the width is widened toward the extending direction (skirt shape). The concave structure 8 is not limited to the shape shown (capped cylindrical shape), and may have other shapes such as hemispherical shape, conical shape, or the like. The concave structure 8 of the illustrated example is formed by the other surface lb of the substrate 1 (opposite to the reference surface 1a, in other words, the other surface 7d (upper or inner surface) of the substrate body 7). However, the mounting opening portion 7 can also be formed in a place where the electronic component 17 or the like is not required, and thus the electronic component 17 is mounted without causing malfunction. In the illustrated example, the lower surface 8e of the top plate portion 8a is located higher than the surface la (7c) of the substrate 1 (see FIG. 30A), and thus the concave portion 8d of the concave structural body 8 (the top plate portion 8a and the side plate portion 8b) The cylindrical space on the inner surface side is formed by recessing the reference surface la of the substrate 1 (in detail, one surface 7c (lower surface or surface) of the substrate body 7) toward the surface lb side. The second light source 13 is provided on the inner surface of the concave portion 8d (more specifically, the lower surface 8e of the top plate portion 8a). Therefore, the second light source 13 can be disposed away from the optical path changing portion 14 as compared with the case where the one surface 7c of the substrate body 7 is provided. position. Therefore, the thickness of the illuminating device 110 is not increased, and the distance between the second light source 13 and the optical path changing portion 14 can be sufficiently ensured. 34 201243211 In order to obtain good optical path changing characteristics in the optical path changing unit, a predetermined distance is required between the second light source 13 and the optical path changing unit 14. Since the illuminating device 110 has the concave portion 8d, the distance between the second light source 13 and the optical path changing portion 14 can be determined by the sighing of the height 4 of the top plate portion 8a. (4) The optical characteristics of the sputum are further improved, and the second illumination light having good characteristics is added to the teeth. The concave-concave structure 8 can be formed in a shape in which the other surface lb (7d) of the substrate k is pulled upwards. Therefore, the height position of the inner surface of the concave portion 8d is not limited to the thickness of the substrate 1, and the second portion can be secured. 2 A sufficient distance between the light source 13 and the optical path changing unit 14. In the example shown in FIG. 30A and the like, the concave structure 8 is formed to protrude upward from the surface lb (7d) of the substrate i, but the concave structure 8 is not limited thereto, and may not be the substrate 1 The configuration in which the surface lb protrudes may be such that the upper surface of the concave structure 8 is flush with the surface lb (7d) of the substrate 1. The concave structure 8 can form a wiring that can be electrically connected to the wiring or the electronic component 17 formed on the other surface lb (7d) of the substrate 1. Thereby, the power supply to the second light source 13 or the lighting and the extinction of the second light source 13 can be controlled. At least a portion of the inner surface (the inner surfaces of the top plate portion 8a and the side plate portion 8b) of the concave portion 8d of the concave structure 8 serves as a reflection surface for reflecting the light from the second light source 13. The inner surface of the concave portion 8d is preferably a full reflection surface. The reflecting surface is preferably such that the light from the second light source 13 can be efficiently reflected. For example, the inner surface of the concave portion 8d can be used as a reflecting surface by applying a coating material containing metal powder (for example, a mirror ink). The configuration of the reflecting surface is not limited to this. The reflecting surface may be formed by a film formed of a metal 35 201243211 formed on the inner surface of the concave portion 8d by a known method. By using the inner surface of the four-shaped portion 8d as a reflecting surface, the light from the second light source 13 can be efficiently directed toward the optical path changing portion 14, and the light use efficiency can be improved. At least a portion of the inner surface of the concave portion 8d of the concave structure 8 can also serve as a light absorbing surface for absorbing light from the second light source 13. To form the inner surface of the concave portion 8d as a light absorbing surface, for example, a light absorbing layer can be formed. The light absorbing layer is not particularly limited as long as it has a function of absorbing light, but a layer made of, for example, a coloring material can be used. The color of the coloring material should be dark at the point of light absorption, and is particularly suitable for black. For example, the coloring material layer can be formed by a material containing a wide black pigment. By using the inner surface of the concave portion 8d as a light absorbing surface, light from the second light source 13 is prevented from scattering on the inner surface of the concave portion 8d, and the characteristics of the second illumination light can be improved. As shown in FIG. 30C, the concave structure 8 can be separated from the substrate body 7. In the example, the side plate portion 8b of the concave structure 8 is disposed in the mounting opening portion 7a, and the concave structural body 8 is attached to the substrate main body 7 with the mounting opening portion 7a being inserted (see Fig. 30A). As shown in Figs. 30A to 3C, the concave structure 8 is preferably detachably attached to the peripheral portion 7b of the mounting port portion. The middle female = construction should be a screw fitting structure that can be freely inserted and removed. The example shows a male screw portion 8f on the outer surface of the cylindrical side plate portion 8b, a t-handle on the inner peripheral portion, a (four) material to the rotary wire portion 8f, a concave structure body, and a white structure. The screw portion ~ the screw is fitted, and the peripheral portion can be freely attached and detached. By allowing the concave structure 8 to be detachably attached to the substrate body 7, the replacement operation of the second light source 36 201243211 13 becomes easy. As shown below, the concave structure 8 can adjust the height position (the position in the thickness direction of the substrate 1) in accordance with the desired state of the male screw portion 8f and the female screw portion 7e. In the state shown in Fig. 30A, the concave structure 8 is completely screwed to the mounting opening portion 7a, and the lower end 8g of the side plate portion 8b is at the same height as the surface la (7C) of the substrate 1, and the concave structural body 8 and the 2 The light source 13 is located at a lower position. As shown in Fig. 30B, the concave structure 8 is rotated in the direction of the rotation or the opposite direction, whereby the fitting state of the male screw portion 8f and the female screw portion can be adjusted, and the height can be arbitrarily set. In the state shown in Fig. 30B, the male screw portion 8f of the concave structural body 8 is slightly sewed with respect to the female screw portion 7e, and the concave structural body 8 is located slightly higher than the position shown in Fig. 30A. Set. As described above, the concave structure 8 can be arbitrarily set to a height position with respect to the substrate main body 7, and the distance between the second light source 13 and the optical path changing portion 14 can be optimized. Further, the configuration in which the concave structural body 8 is detachably attached to the peripheral edge portion 7b is not limited thereto, and a concave-convex engaging structure that can be freely detached from the side plate portion 8b and the peripheral edge portion 7b may be provided. For example, a locking convex portion is formed on the outer surface of the side plate portion 8b, and a locking concave portion that can be detached from the locking convex portion is formed on the inner surface of the peripheral edge portion 7b, and the concave structural body 8 is formed to be adjacent to the peripheral edge portion 7b. Free loading and unloading. Further, the concave structure 8 may be fixed to the peripheral edge portion 7b by an adhesive or the like or a concave-convex engaging structure (not shown). Further, the concave structure 8 may be formed integrally with the substrate body 7. As shown in Fig. 29, since the concave structure 8 is provided in a portion (empty accommodation chamber) where no electronic component 17 37 201243211 or the like is provided, the structure in the lid portion 4 (substrate 1, first illumination portion 2, second) The thickness of the illumination unit 3 and the like does not increase, so that the illumination device 110 is thinned. Although the base material 1 (substrate body 7) is not particularly limited, it may be a sheet made of a resin such as PE butyl. The base material 1 may be a rigid substrate made of glass epoxy resin or the like. As shown in Fig. 30A, the light guide body 12 is formed with an opening portion 15 having the same shape as that of the substrate body 7 厶 mouth portion 7a. The opening portion 15 may be formed as a package ® mounting opening portion 7a and having a larger diameter than the mounting opening portion 7a. At least a portion of the inner surface l5b of the peripheral portion l5a may be formed by reflecting a mirror oil or a metal film to reflect the light from the second light source 13. At least a portion of the inner surface 15b also functions as a light shielding surface for blocking light from the first light source 11. In the illuminating device 110, the concave portion 8d is formed on the reference surface 1& (7c) of the substrate 1, and the second light source 13 is provided in the concave portion 8£1, but the structure inside the lid portion 4 is not formed (substrate 1) The thickness of the first illumination unit 2 and the second illumination unit 3 increases, and the distance between the second light source 13 and the optical path changing unit 14 can be sufficiently ensured, and the second illumination light having excellent characteristics can be obtained. Therefore, the thinning of the illumination device 11 can be achieved. ~ The illuminating device 110 can sufficiently ensure the distance between the second light source 13 and the optical path change period 14 without causing the optical path changing portion 14 to protrude from the front side of the device (the lower surface side of FIG. 29). The surface of the illumination device 11 is flat. Therefore, it is suitable for the viewpoints of ease of handling, aesthetics, ease of manufacture, and the like. S] 38 201243211 Also, as shown in Figure 29, the lighting device 1]n is accurate! * In the upper part of the upper side of the substrate I, on the side opposite to the base plane la of the substrate I, a space of 1 height is secured. ...to blow the electronic component π, etc., therefore, even if the concave structure 8 is a structure that protrudes upward from the surface, the right side is placed in a portion where there is no electronic component, such as the baby, 11 Λ (empty accommodation room), in the month The structure in the inside of the 110 (substrate 1, the first illumination, the second, the second illumination unit 3, etc.) does not increase the thickness of the device, and does not hinder the thinness of the device.] (Example 11) . - Fig. 3i is a cross-sectional view showing the apparatus of the fifth embodiment of the present invention. In the present embodiment, a U-shaped structure portion 119 is formed in the portion of the base portion. The concave structure portion 119 has a shape in which the side plate portion 11 is extended by the side plate portion 119c, and the top plate portion 119a is formed in a flat plate shape. The shape can be made, for example, as a circle, a rectangle, or the like. The lower surface 119 e of the top plate portion 119 a is provided with the second light source, and the i 3 side plate portion 119b can be gradually widened in width toward the extending direction. The side plate portion 11% may have a shape that extends downward with respect to 1 r T perpendicular to the top plate portion 119a or slightly perpendicular. The concave structure portion 119 does not protrude from the other surface of the substrate 1 (b), and the upper surface of the concave structure 119 may be the same surface as the surface ib. The inner surface of the concave portion of the concave structure portion m (the conical trapezoidal space on the inner surface side of the top plate portion and the side plate portion 119b) is formed by recessing the reference surface 1& facing the surface lb side of the substrate 1. 39 201243211 The second light source 13 is provided on the inner surface of the concave portion π 9d (more specifically, the lower surface ii9e of the top plate portion 119a). Therefore, the thickness of the illuminating device is not increased, and the second light source 13 and the optical path changing portion can be sufficiently ensured. 14 distance. By setting the height position of the top plate portion 119a, the distance between the second light source 13 and the optical path changing portion 14 can be arbitrarily set, and the distance can be optimized in accordance with the optical characteristics of the optical path changing portion 14, and the second characteristic having good characteristics can be obtained. Lighting light. At least a portion of the inner surface of the concave portion li9d (the inner surface of the top plate portion U9a and the side plate portion 119b) of the concave structure portion 119 can be made to reflect the π light reflection from the second light source by mirror ink coating or metal film formation or the like. surface. By using the concave portion 119d as a reflecting surface, the light from the second light source 13 can be efficiently directed toward the optical path changing portion 14, and the light use efficiency can be improved. At least a portion of the inner surface of the concave portion 119d of the concave structure 119 can be formed as a light absorbing surface that absorbs light from the second light source 13 by forming a light absorbing layer such as the above-described coloring material layer. In the present embodiment, since the concave structural portion U9 integrated with the substrate 1 is used, it is easy to manufacture compared to the case where the concave structural body 8 is separated from the substrate body 7, and the manufacturing cost can be reduced. (Twelfth Embodiment) Fig. 32 is a cross-sectional view showing a portion of an illumination device according to a second embodiment of the present invention. In the present embodiment, the optical path changing unit 14 has a collecting element 21 which is a Fresnel lens. The position of the optical axis AX1 of the light collecting element 21 and the optical axis 第2 of the second light source 13

40 201243211 The position is staggered. The light vehicle AX2 is a line along the traveling direction of the light from the center of the outgoing light beam from the second light source 13, and in the illustrated example, passes through the center of the second light source 13 and is perpendicular to the reference plane la of the substrate 1. The light sleeve ΑΧ 1 is along the line of the central axis of the light collecting element 21 and is perpendicular to the reference plane la of the substrate 1. In the illustrated example, the misalignment of the optical axes AX1, AX2 is a misalignment along the plane of the reference plane la of the substrate 丨. The direction of deviation of the optical axis AX1 of the light collecting element 21 with respect to the optical axis Αχ2 of the second light source 13 depends on the direction of the oblique direction of the second illumination light. As shown in Fig. 32, in the second illumination unit 3A), the optical axis AX1 of the light collecting element 21 is located on the left side of the optical axis Αχ2 of the second light source 13, whereby the direction perpendicular to the substrate 1 can be obtained.乂 〖The second illumination light LA tilted to the left. (Thirteenth Embodiment) Fig. 33 is a cross-sectional view showing a portion of a lighting device according to a thirteenth embodiment of the present invention. In the present embodiment, the optical path changing portion 14 has a light collecting element 21A having a convex lens having a convex curved surface. The light collecting element 21A may be designed in accordance with the wide angle of the light from the second light source 13 and the inclination angle of the light required by the light emitted from the light collecting element 21A, and may be a spherical surface, a spherical surface, or a paraboloid. One of the curved surfaces of the cylindrical surface, the cylindrical surface, and the like is a shape of the main shape, or the surfaces are combined in a plurality of shapes. Further, the light collecting element 21A may reversely face the surface 2ig of the curved surface so that the flat surface 21h is upward. Further, the light collecting element 21, 201243211 may be a convex lens having a convex curved surface on both upper and lower sides. The position of the optical axis AX1 of the light collecting element 21A is shifted from the position of the optical axis AX2 of the second light source 13. The optical axis AX2 is a line along the traveling direction of the light from the center of the outgoing light beam of the second light source 13. In the illustrated example, the center of the second light source 13 is perpendicular to the reference plane 1a of the substrate 1. The optical axis AX1 is, for example, a line along the central axis of the light collecting element 21A, and is perpendicular to one side of the substrate 1. In the example of the drawing, the offset of the optical axes AX1 and AX2 is a deviation in the plane along the reference plane 1a of the substrate 1. The direction of the deviation of the optical axis AX1 of the light collecting element 21A with respect to the optical axis AX2 of the second light source 13 depends on the direction of the oblique direction of the second illumination light.

As shown in Fig. 33, in the second illumination unit 3 (3A), the optical axis AX1 of the light collecting element 21A is located on the left side of the optical axis AX2 of the second light source 13, whereby the optical axis AX1 is perpendicular to the substrate 1 In the direction V1, the second illumination light LA is tilted to the left. Figs. 34 and 35 show a modified example of the light guide body. The light guide body 112 shown here is a thick portion 113 which gradually increases in thickness toward the end edge portion &12& The thick portion 113 of the example has an inclined surface U3a which is closer to the one end edge nP112a on the lower U2d side. The upper ii2c side of the thick portion 113 is a flat surface along the reference plane la. The inclination angle of the inclined surface 113a with respect to the reference plane 1a may be, for example, 1 to 20 degrees. The thickness of the thick portion 113 in the one end edge portion 112a is preferably ... with the above. 42 201243211 * The thickness of the thick portion 113 in 112a may be 2 mm or less. The thick portion 113 of the vehicle may be formed to extend in the depth direction of Fig. 34. By the formation of the thick portion 113, the light from the light source 11a can be increased from the end The incident rate of the end face 112b of the crotch portion 112a when incident on the light guide body 丨π, the utilization efficiency of the paleo-optical light. The portion other than the thick portion 113 of the light guide body 112 is formed thin, so that the inside of the device can be achieved. As shown in Fig. 36, the thicker portion may have an inclined surface on the upper surface 112c side. The thick portion 114 shown here has a side closer to the end '彖 on the upper surface 112c side. 114& The lower U2d side of the thick portion 114 is a flat surface of the reference plane la. The inclined angle of the inclined surface 亦可 may be the same as the inclined surface ii3a of Fig. 34. In the example of the figure, the substrate 1 is One portion is formed with a height adjusting portion 1b. The height adjusting portion 115 has a main portion of the adjusting portion An inclined portion 115b extending obliquely from the edge portion thereof. The lower surface of the inclined portion 115b is an inclined surface ii5c which is increasingly lowered away from the adjustment portion main body 115a. The inclined surface of the thick portion 114 is formed at the inclined portion i]% The inclined surface 115c. In this example, the light use efficiency can be improved by the formation of the thick portion 114. Further, the portion other than the thick portion 114 can be formed thin, so that the space of the device portion can be reduced. A reflecting member is disposed on the inclined surface 113a. The light reflecting member 112 can be minimized by providing a reflecting member. The reflecting member can be made of a material such as a resin such as white PET. Further, the reflecting member can also be used on the surface of the surface of the 2012 201211. A film made of silver or the like is formed to improve the reflection efficiency. In the present invention, a low refractive index layer can be formed on either or both sides of the light guide. The low refractive index layer is a layer made of a material having a lower refractive index than the light guide. For example, a fluororesin may be used. The lower the refractive index of the low refractive index layer, the lower the refractive index, for example, 14 or less (for example, 1 to 1.4). The thickness of the low refractive index layer may be, for example, 〇〇1 to 〇〇3 mm. 】 (Example 1) The type 5 inspection device shown in Fig. 25 is arranged along the one end edge portion 12a at the central portion of one end edge portion 12a of the light guide body 12 (length 180 mm, width 65 mm, thickness 1.3 mm) formed on the substrate. A light source 11 is formed by one LED 1 la (each 20 mA). A rectangular frame-shaped groove portion 41 is formed on one surface of the light guide body 12, and the groove portion 41 is composed of a pair of main portions 41A'41A and a joint portion 41B. In the configuration, the pair of main portions 41A and 41A are linearly extended from the vicinity of the both ends of the formation range of the first light source 11 in the one end edge portion 12a to the main end portion 12f, and the main portions 41A and 41A, and the joint portion 41B. The end portions of the main portions 41A and 41A on the side of the end portion of the main portions 41A and 41A are connected. The groove portion 41 is formed by laser processing through the light guide body 12 and has a width of 0.5 mm. A light-reflective resin 42 (white ink) containing titanium oxide (light-reflecting fine particles) (2% by mass) is embedded in the inside of the groove portion 41 (see FIG. 2). The distance between the main portions 41A and 41A of the groove portion 41 is 60 mm, and the distance between the one end edge portion 12a and the joint portion 41B is 60 mm. Light from the first light source 11 is introduced 44 201243211 to a rectangular lead-in area R13 surrounded by the groove portion 41. As shown in Fig. 25, the one side of the introduction region R13 covers the entire area to form a light extraction portion (not shown) composed of minute dots of a white ink layer containing titanium oxide. The light from the first light source 11 is introduced into the introduction region R13 of the light guide 12, and the introduction region R13 is caused to emit light in a plane. The measurement result of the party degree in the nine measurement points (the first measurement point p 1 to the ninth measurement point P 9 ) of the introduction region R13 is as shown in Fig. 27 . The position of the numerical value is based on the position of each of the measurement points P 1 to P 9 (see Fig. 25). For example, the three numerical values in the lower portion of the "Brightness at the 1st to 9th points" in Fig. 27 are the luminances of the left measurement points P 7 to P9, respectively. The measurement result of the brightness of the entire lead-in area R13 and the unevenness of the brightness are shown in Fig. 27. Further, the result of measuring the illuminance at a position of a predetermined distance (30 to 90 cm) from the horizontally disposed light guide 12 from the height direction is shown in Fig. 28. (Example 2) In the test apparatus shown in Fig. 26, the inside of the groove portion 41 is formed with the second groove portion 51 along the groove portion 41. In other words, the groove portion is formed in a double shape. The second groove portion 51 is formed in a rectangular frame shape, and is composed of the main portions 51A and 51A and the connection portion 51B. The main portions 51A and 51A are inside the main portions 41A and 41A, and are separated from the main portion 41A. 41A is formed at a constant distance (1 mm), and the connecting portion 51B is formed inside the connecting portion 41B by a distance (1 mm) from the connecting portion 41B. The width of the groove portion 51 is the same as the width of the groove portion 41. The distance between the main portions 51A and 51A of the groove portion 51 is 60 mm, the distance between the one end edge portion 12a and the connection portion 51B is 60 mm, the introduction region R13 surrounded by the groove portion 51 and the one end edge portion 12a 45 201243211, and the introduction region R13 of the first embodiment. Same size. The configuration of the test apparatus other than this is the same as that of the first embodiment. The measurement of the brightness or the like was performed using the test apparatus. The results are shown together in Figure 27. The measurement result of the illuminance is shown in Fig. 28. (Comparative Example 1) A test apparatus having a light guide body 12 (having a length of 180 mm and a width of 60 mm 'thickness umm) in which no groove portion was formed was prepared. The lead-in area R13 of the test apparatus has the same size as the lead-in area R13 of the first embodiment. The configuration of the test apparatus was the same as that of the first embodiment. Measurement of brightness and the like was carried out using the test apparatus. The results are shown together in Fig. 27. The measurement result of the illuminance is shown in Fig. 28. As shown in Fig. 27, in Comparative Example 1 having no groove portion, in Examples 1 and 2 in which the groove portion was formed, the light in the light guide body 12 was internally reflected by the groove portions 41 and 51, and was reused. The brightness in the south lead-in area R13, particularly the brightness of the measurement points P 7 to p 9 which are far from the light source 11 . In the first and second embodiments, the luminance of the measurement points (e.g., the measurement points P 7 to P9) which are far from the light source 11 can be increased. The unevenness of the luminance in the introduction region R13 is low. That is, the brightness of the lead-in area R13 is made uniform. Further, in the second embodiment in which the two groove portions 41 and 51 are formed, in the second embodiment in which the two groove portions 41 and 51 are formed, the measurement point farther from the light source 11 is further increased (for example, the measurement points P 7 to P 9 ). As a result, the brightness of the whole can be improved, and the brightness can be made uniform. It can be seen from Fig. 28 that in the examples i and 2 in which the grooved portion is formed, a higher value can be obtained with respect to the illuminance. In particular, two grooves 41 and 51 are formed. High illumination. [Block 4] FIG. 1 is a cross-sectional view showing a main part of a first embodiment of the lighting device of the present invention. Fig. 2 is a cross-sectional view showing an example of a groove portion of a light guide body formed in the illumination device of Fig. 1. Fig. 3 is a cross-sectional view showing another example of the groove portion of the light guide body formed in the illumination device of Fig. 1. Figure 4 is a plan view showing the lighting device of Figure 1. Fig. 5 is a cross-sectional view showing a second illumination unit of the illumination device of Fig. 1. Fig. 6 is a cross-sectional view showing a light collecting element and a light refraction element of the illumination device of Fig. 1. Fig. 7 is an enlarged cross-sectional view showing a light collecting element and a light refraction element of the illumination device of Fig. 1. Fig. 8 is a general cross-sectional view of the illuminating device of Fig. 1 and showing the Al-A1 cross section of Fig. 4. Fig. 9 is a cross-sectional view of the entire lighting device of Fig. 1 and showing the A2 - A2 cross section of Fig. 4. Fig. 10 is a cross-sectional view showing the second illumination portion of the illumination device of Fig. 1 and is a cross-sectional view taken along the X direction of Fig. 4. Fig. 11 is a cross-sectional view showing the ith illumination portion of the illumination device of Fig. 1 and is a cross-sectional view taken along the Y direction of Fig. 4. Fig. 12 is a cross-sectional view showing a third illumination portion of the illumination device of Fig. 1. 47 201243211 Fig. 13 is a cross-sectional view showing an example of a substrate which can be used for the illumination device of Fig. 1. Fig. 14 is a plan view showing an example of a light guide which can be used for the illumination device of the second drawing. Fig. 15 is a plan view showing another example of the light guide which can be used for the illumination device of Fig. 1. Fig. 16 is a plan view showing a second embodiment of the lighting device of the present invention. Fig. 17 is a plan view showing a third embodiment of the lighting device of the present invention. Fig. 18 is a plan view showing a fourth embodiment of the lighting device of the present invention. Fig. 19 is a plan view showing a fifth embodiment of the lighting device of the present invention. Fig. 20 is a perspective view schematically showing a first illumination unit of a sixth embodiment of the illumination device of the present invention. Fig. 21 is a perspective view schematically showing a first illumination unit of a seventh embodiment of the illumination device of the present invention. Fig. 22 is a perspective view schematically showing a first illumination unit of an eighth embodiment of the illumination device of the present invention. Fig. 23 is a plan view schematically showing a first illumination unit of a ninth embodiment of the illumination device of the present invention. Fig. 24 is a cross-sectional view schematically showing the illumination device having the first illumination portion of the previous figure. 48 201243211 Figure 25 shows a plan view of the test device. Figure 26 is a plan view showing the test apparatus. Figure 27 shows a table of test results. Figure 28 shows a graph showing the results of the test. Fig. 29 is a cross-sectional view showing the entire embodiment of the illumination device of the present invention. The third aspect shows a cross-sectional view of the second illumination unit of the illumination device of the twenty-ninth aspect, and is a state in which the concave structure is attached to the substrate body. Fig. 30B is a cross-sectional view showing the second illumination unit of the illumination device of Fig. 29, and is a state in which the height position of the concave structure is changed with respect to the state of the previous figure. Fig. 30C is a cross-sectional view showing the second illumination portion of the illumination device of Fig. 29 and showing a state in which the concave structure is removed from the substrate body. Fig. 31 is a cross-sectional view showing the second illumination unit of the embodiment of the illumination device of the present invention. Figure 32 is a cross-sectional view showing a second illumination unit in a twelfth embodiment of the illumination device of the present invention. Figure 33 is a cross-sectional view showing a second illumination unit of the embodiment of the illumination device of the present invention. Fig. 34 is a schematic view showing a modification of the light guiding body. Figure 35 is a perspective view showing the light guide of the previous figure. Fig. 36 is a schematic view showing a modification of the light guide body. Fig. 37 is a schematic view showing an example of a resistive film type input sensor. Fig. 0 49 201243211 Fig. 38 is a schematic view showing an example of a pressure sensitive type diaphragm switch. [Description of main component symbols] 1...substrate 8: concave structure la... one of the substrates (reference 8a... top plate surface) 8b... side plate portion lb... substrate other Surface 8c... peripheral portion 2... first illumination portion 8d, 119d·. concave portion 3... second illumination portion 8e... lower surface 4... cover portion 8f... male screw portion 4a. .. mounting mouth portion 8g...side plate portion lower end 4b...lower plate portion 10...illuminating device 4c...side plate portion 11...first light source 4d...locking claw portion 1 la. .. light source 4e... below lib... light emitting surface 5... frame portion 11A... end side light source jL 孑L 11B... other end side light source 6... inner material 12, 112. .. Light guide body 7: Substrate body 12a... - End edge portion 7a... Mounting mouth portion 12b... End surface 7b... Peripheral portion 12c._. Upper surface 7c... One side 12d... 7d...the other side 12e...the edge 7e...the female screw portion 12f...the other end portion 50 201243211 12g...the side edge portion 23...the crotch portion 13...the second Light source 23a... inner peripheral surface 14... optical path changing unit 23b... outer peripheral surface 15... opening portion 25... positioning member 15a... peripheral portion 30... touch panel (detector) 15b. .. inner surface 31... input sensor 16... light extraction unit 3 2...resist layer 17, 17a to 17c...electronic part 33...substrate 18...mask 34...wiring layer 19, 19A to 19F...key pad 34a...electrode 19a...lower side 41...first groove portion 19b...left side 41a...inner surface 21...light collecting element 41A...main portion 21a...center portion 41B...connecting portion 21b.. The first outer peripheral portion 41C...the main portion 21c...the second outer peripheral portion 41D...the connecting portion 21d...the third outer peripheral portion 41E...the main portion 21e...the lower surface 41F...the connecting portion 21f...41G...base 21g...curve 41H...extension 41J...first extension 21h...flat surface 41K...second extension 22...light refraction element 42. .. light-reflective resin 22a_L surface 42a... body portion 22b... lower surface 42b... extension portion 51 201243211 43.. control unit 51.. second groove portion 51A... main portion 51B... connection portion 61.. . Sheet switch 62.. substrate 62a... above 63.. central contact portion 64.. metal plate 65.. annular contact portion 66... switching element 110.. illuminating device 112.. Light guide body 112a... end edge portion 112b... end surface 112c... upper surface 112d... lower surface 113.. thicker portion 113a... inclined surface 114.. thicker portion 114a... inclined Face 115a...height adjustment portion 115b...inclined 115c...inclined surface 119.. concave structure 119a... top plate portion 119b... side plate portion 119c... peripheral portion 119d... concave portion 160.. touch panel 161.. Upper substrate 161a...opposing surface 161b...upper surface 162..lower substrate 162a...opposing surface 163,164...transparent conductive film 165..reflecting layer 166.. dot spacer 167 .. Adhesive layer 170.. Diaphragm switch 171a... Opposite surface 171b... Upper surface 172.. Lower substrate 172a··· Counter surface 173... Wiring layer 174... Wiring layer 175.. Eclipse layer 176.. . upper electrode

52 201243211 177...lower electrode domain..(1st zone) 178...adhesive layer R2, R4, R6, R8, R10 ...outer zone AX1,AX2...optical axis domain (2nd zone) H1... Height R11...-end side area (1st area) T1...thickness R12...the other end side area (2nd area) P1~P9...1st measuring point~9th measuring R13..· Leading area fixed point VI... perpendicular to the direction of the substrate R1, R3, R5, R7, R9... inner area LA, LB... second illumination 53

Claims (1)

201243211 VII. Patent application scope: 1. A planar light-emitting device, comprising: a light source having 1 or a plurality of light sources; and a sheet-shaped light guide body 1 capable of introducing light from the light source and guiding directions; At least one of the grooves forms at least one of the light reflecting the inside of the light guide body, and at least a portion of the inside of the groove portion is embedded with a light-reflective resin containing white light-reflecting fine particles. 2. The planar light-emitting device of claim 1, wherein the groove portion surrounds a first region of a portion of the light guide body and is divided into a second region other than the second region. 3. The planar light-emitting device of claim 1 or 2, further comprising a control unit capable of independently controlling the lighting and extinguishing of the plurality of light sources, wherein one of the plurality of light sources can introduce light into the foregoing The 1 area, one of the other light sources, can introduce light into the aforementioned second area. 4. The planar light-emitting device according to any one of claims 1 to 3, wherein the groove portion is formed to penetrate the light guide. 5. The planar light-emitting device according to any one of claims 1 to 4, wherein the light-reflecting fine particles are made of titanium oxide. 6. A illuminating device, comprising: a first illuminating unit having a planar light-emitting device according to any one of claims 1 to 5, a substrate, and a narrower than the first illuminating unit 54 201243211 a second illumination unit that emits the second illumination light in a small range, the second illumination unit having a second light source mounted on one of the substrates and a direction in which the light from the second light source is perpendicular to the substrate The direction of the tilt is the optical path changing unit of the second illumination light, and at least one of the surfaces of the light guide body forms at least one groove portion that internally reflects the light in the light guide body, and at least a portion of the inside of the groove portion is buried A person has a light-reflective resin containing white light-reflecting fine particles. 7. The illuminating device of claim 6, wherein the reference surface of the preamplifier plate before the light guide body is formed, the shape of the wire is concave toward the opposite side of the reference surface, and the description is made 2 The light source is disposed in the concave portion. 8. The illuminating device of claim 7, wherein the substrate has a substrate body having a mounting opening and a concave structure having the concave portion, and the concave structure is detachably attached to the mounting The peripheral part of the mouth. 9. The illuminating device of claim 8, wherein the concave structure can be attached to a peripheral portion of the mounting opening by screw fitting, and the substrate can be adjusted in accordance with a state in which the screw is fitted. The position in the thickness direction. Further, in the illuminating device of the seventh aspect of the invention, wherein the concave portion is formed on the inner surface of the concave structural portion of the substrate. The illuminating device of any one of the items 7 to 1G, wherein at least a portion of the inner surface of the concave portion serves as a reflecting surface for reflecting light from the second light source. 12. The illumination device of any of clauses 7 to 5, wherein at least a portion of the inner surface of the four concave portions serves as a light absorbing surface for absorbing light from the second light source. The illuminating device according to any one of claims 1 to 12, wherein the optical path changing unit has a light collecting element that reduces an emission range of the light, and a direction in which the front (four) pair is perpendicular to the substrate The light refraction section in the oblique direction, and the light collecting element and the light refractive element are formed in a posture along the substrate. 56