Illumination member for electronic device and mounting structure for illumination member for electronic device

Abstract

To provide a compact irradiation member for an electronic device capable of arranging a light source near a side wall while adopting a configuration of changing a traveling direction of light.SOLUTION: An irradiation member for an electronic device comprises a light guide plate 21 that is formed in a plate shape from a translucent material and has one front surface in a thickness direction serving as an irradiation surface and a bottom surface serving as an incident surface facing a light source. The irradiation member comprises a reflection plate 22 that has a plurality of reflection surfaces facing surfaces other than the front surface and the bottom surface of the light guide plate 21. The irradiation member comprises a holding structure 25 that holds the light guide plate 21 in a concave part 31 formed with a plurality of reflection surfaces as wall surfaces.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an electronic device lighting member that illuminates a display unit of an electronic device, and to a mounting structure for the electronic device lighting member. [Background technology]

[0002] Illumination components that guide the light of an LED mounted on a board and irradiate it outside a housing for electronic equipment (hereinafter simply referred to as a case) are described in Patent Documents 1 and 2. The illumination components disclosed in these patent documents include a lens that changes the direction in which the LED light travels. The LED is mounted on a board that is aligned with the bottom wall of the case so that it irradiates light in a direction perpendicular to the bottom wall. The lens is provided near the bottom wall of the case and a side wall of the case that is arranged perpendicular to the bottom wall, and has a curved portion that changes the direction of the LED light so that it travels outside the case from the side wall. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-176027 A [Patent Document 2] JP 2012-230998 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the lighting components disclosed in Patent Documents 1 and 2, the LEDs must be positioned at a distance from the sidewall of the case toward the inside of the case. In addition, because the lens extends from the sidewall into the case, there is a problem that dead space is generated near the sidewall. In order to solve such problems, it is necessary to avoid making the work of attaching the lighting component to the case complicated. The object of the present invention is to provide a compact lighting component for electronic devices that can be configured to change the direction of light travel while allowing a light source to be positioned near a side wall, and to provide an attachment structure for the lighting component for electronic devices that can easily attach the lighting component to a side wall. [Means for solving the problem]

[0005] In order to achieve this object, the lighting component for electronic devices of the present invention comprises a light guide plate formed in a plate shape from a light-transmitting material, one front surface in the thickness direction being an irradiation surface and one side surface being an incident surface facing a light source, a reflector having a plurality of reflective surfaces facing other surfaces of the light guide plate except for the front surface and the incident surface, and a holding structure that holds the light guide plate in a recess formed with the plurality of reflective surfaces as wall surfaces.

[0006] In the lighting component for electronic devices according to the present invention, the holding structure may be composed of a pair of arms protruding laterally from two side surfaces adjacent to the incident surface of the light guide plate, a pair of cutouts formed at positions corresponding to the arms of the recess so that the arms can be inserted and removed, and locking portions provided on the arms and the cutouts for regulating the retraction movement of the arms inserted into the cutouts.

[0007] In the lighting component for electronic devices according to the present invention, the front surface of the light guide plate may be treated to diffuse light, and the pair of arms and the pair of cutout portions may each be formed asymmetrically, so as to restrict the light guide plate from being accommodated in the recess with the front surface of the light guide plate facing the bottom of the recess.

[0008] The mounting structure for an electronic device lighting member of the present invention is a mounting structure for an electronic device lighting member for mounting the electronic device lighting member to a side wall of a case, and includes a pivotal support portion that supports one end of the electronic device lighting member opposite the light source to the side wall so that it can be detached and swingably attached to and rotatable from the side wall, and an opening formed in the side wall into which a portion of the reflector that forms the reflective surface can be inserted when the electronic device lighting member swings around the pivotal support portion to fit along the side wall, and a swing regulating portion that regulates the swing of the electronic device lighting member in a direction away from the side wall, wherein the pivotal support portion is composed of a shaft provided on the reflector to extend in the direction in which the two side surfaces are aligned, and a bearing provided on the side wall to support the shaft from the bottom wall side, and the swing regulating portion is composed of a protrusion protruding from an end of the electronic device lighting member close to the light source, and a notch formed in a board on which the light source is mounted so that the protrusion can engage with the board.

[0009] The present invention relates to a mounting structure for an electronic device lighting member, wherein the reflectors are arranged at positions spaced apart from each other in the direction in which the two side surfaces are arranged, and adjacent reflectors are connected to each other by a connecting structure to form a reflector assembly, and the side wall has openings formed at positions corresponding to each of the reflectors of the reflector assembly, and has a partition wall protruding toward the inside of the case between adjacent openings, and the connecting structure of the reflector assembly may have a guide portion into which the partition wall is inserted as the electronic device lighting member swings around the pivot portion and moves along the side wall. Effect of the Invention

[0010] In the electronic device lighting component according to the present invention, light that enters the light guide plate from the incident surface is reflected by the reflecting surface of the reflector and exits from the front surface of the light guide plate. The electronic device lighting component according to the present invention is formed into a plate shape as a whole by accommodating the light guide plate in the recess of the reflector, so that it can be arranged along the side wall of the case. Therefore, it is possible to provide a compact electronic device lighting component that can arrange the light source near the side wall while adopting a configuration that changes the direction of light travel.

[0011] According to the mounting structure for an electronic device lighting member of the present invention, one end (an axis provided at one end of the reflector opposite to the light source) of the lighting member consisting of a light guide plate and a reflector is supported by a bearing on the side wall, and the lighting member is swung along the side wall, and the part forming the reflective surface of the reflector is inserted into the opening of the side wall and the protrusion of the reflector is engaged with the notch in the substrate, thereby mounting the lighting member so that it cannot move in the case. Therefore, according to the present invention, since the mounting of the lighting member is completed by the operation of swinging the lighting member, it is possible to provide a mounting structure for an electronic device lighting member that allows a lighting member formed of multiple parts (light guide plate and reflector) to be easily mounted on a side wall. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of an electronic device equipped with an illumination member according to the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of the front portion of the case. [Diagram 3] FIG. 3 is a perspective view of a part of the case and the lighting board. [Figure 4] FIG. 4 is a perspective view of the illumination member. [Diagram 5] FIG. 5 is an exploded perspective view of the illumination member. [Figure 6] FIG. 6 is a perspective view of the light guide plate. [Figure 7] FIG. 7 is a perspective view of a light guide plate. [Figure 8] FIG. 8 is an enlarged perspective view of a part of the reflector. [Figure 9]FIG. 9 is an enlarged perspective view of a part of the reflector. [Figure 10] FIG. 10 is an enlarged perspective view of a portion of the light guide plate and reflector plate assembly. [Figure 11] FIG. 11 is an enlarged perspective view showing a part of the light guide plate and the reflector plate. [Figure 12] FIG. 12 is an enlarged perspective view showing a part of the case and the illumination member. [Figure 13] FIG. 13 is an enlarged perspective cross-sectional view showing a part of the case and the illumination member. [Figure 14] FIG. 14 is a perspective view of a part of the case and the illumination member. [Figure 15] FIG. 15 is a perspective view of a part of the case and the illumination member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electronic device lighting member and an attachment structure for an electronic device lighting member according to the present invention will now be described in detail with reference to Figs. The housing 1 shown in FIG. 1 is a housing for an electronic device. This housing 1 is formed by combining three parts to form a rectangular box in a plan view. These three parts are a first member 2 depicted on the lower side in FIG. 1, a second member 3 depicted on the upper side in FIG. 1, and a case 4 housed between the first and second members 2 and 3. As shown in FIG. 2, the case 4 is formed in a box shape that opens in one direction (upward in FIG. 2). The opening of the case 4 is closed by the second member 3 when the housing 1 is assembled.

[0014] The housing 1 is formed so that one side wall 5 (see FIG. 2) of the case 4 is located at the front surface 1a, and has a plurality of light-emitting units 6 on the front surface 1a. The light-emitting units 6 emit light when light is guided by an electronic device lighting member 7 (hereinafter simply referred to as a lighting member) according to the present invention. The lighting member 7 is configured to guide light from an LED 8 provided on the bottom side of the case 4 to the outside of the case 4 through an opening 5a in the side wall 5, as shown in FIG. The lighting member 7 and the LED 8 will be described later.

[0015] A sheet 9 that covers the lighting member 7 from the outside of the housing 1 and a decorative plate 10 that covers the entire side wall 5 including the sheet 9 are attached to the outer surface of the side wall 5. The sheet 9 and the decorative plate 10 are each made of a material that can transmit light. The openings 5a in the side wall 5 are formed at a plurality of positions aligned at predetermined intervals in the longitudinal direction of the side wall 5. Parts of the illumination members 7 are inserted into these openings 5a from inside the case 4. In the following, when describing the configuration of the housing 1 and the lighting member 7, for convenience, the direction in which the first member 2 is located is defined as downward, and the direction in which the front face 1a of the housing 1 is oriented is defined as forward, and the description will be given in the direction as seen when facing the front face 1a of the housing 1.

[0016] As shown in Fig. 3, partition walls 11 are provided on the inside of the case of the side walls 5 at positions adjacent to the sides extending in the vertical direction of the opening 5a. The partition walls 11 are formed in plate shapes extending from the bottom of the case 4 toward the opening side, and protrude from the side walls 5 toward the inside of the case. Of these partition walls 11, bearing pieces 12 are provided protruding upward from the upper ends of two partition walls 11 located on both sides in the left-right direction of the housing 1 and the upper end of the partition wall 11 located in the center. The bearing pieces 12 cooperate with the side walls 5 and the partition walls 11 to form bearings 13 that detachably and swingably support the lighting member 7 described below.

[0017] As shown in Fig. 3, an illumination board 14 is disposed on the bottom of the case 4. A notch 15 is formed in one side of the illumination board 14 in a portion corresponding to the partition wall 11, and the partition wall 11 is inserted into this notch 15 and positioned adjacent to the side wall 5. A veneer-like portion 16 formed between a pair of adjacent notches 15 of the illumination board 14 is inserted into the opening 5a. An LED 8 is mounted on this veneer-like portion 16. The LED 8 is configured to radiate light upward.

[0018] As shown in Figs. 4(A) and (B), the illumination member 7 is formed in a long and narrow plate shape in the left-right direction of the housing 1. Fig. 4(A) is a perspective view in an assembled state, and Fig. 4(B) is an exploded perspective view. The illumination member 7 includes a plurality of light guide plates 21 and a plurality of reflecting plates 22 so as to be able to guide light to the plurality of light emitting sections 6 of the housing 1. The plurality of light guide plates 21 are formed individually. As shown in Figs. 4 and 5, the plurality of reflecting plates 22 are arranged in the left-right direction of the housing 1 and are connected to each other by a connecting structure 23 described later, thereby constituting one reflecting plate assembly 24.

[0019] As shown in Figures 4 and 5, the illumination member 7 according to this embodiment is composed of a plurality of light guide plates 21 arranged in the left-right direction of the housing 1, a plurality of reflecting plates 22 for each of these light guide plates 21 (see Figure 4), and a holding structure 25 {see Figure 10(B)} that holds the light guide plates 21 so that they do not fall off the reflecting plates 22. The light guide plate 21 is made of a translucent synthetic resin material and has a rectangular plate shape when viewed from the front. The thickness direction of the light guide plate 21 is the front-rear direction of the housing 1. In the light guide plate 21 according to this embodiment, the front surface 21a (see FIG. 6) on one side in the thickness direction serves as an irradiation surface, and the bottom surface 21b (see FIG. 7) serves as an incidence surface facing the LEDs 8. A treatment is applied to the front surface 21a of the light guide plate 21 to diffuse the light that passes through the light guide plate 21 and goes out of the light guide plate 21. As an example of this treatment, there is a graining treatment.

[0020] 6 and 7, a recess 26 having a semicircular cross section and projecting upward is formed in the center of the lower surface 21b of the light guide plate 21. The light of the LEDs 8 is mainly irradiated to this recess 26, and is refracted when passing through the wall surface of the recess 26, and is diffused over a wide range inside the light guide plate 21. A pair of arms 27, 28 are provided on two side surfaces 21c, 21d adjacent to the lower surface 21b, which is the incident surface of the light guide plate 21. The two side surfaces 21c, 21d are aligned in the left-right direction of the housing 1. Of the pair of arms 27, 28 of the light guide plate 21, the arm located on the right side of the housing 1 will be referred to as a first arm 27 below, and the other arm will be referred to as a second arm 28.

[0021] These first and second arms 27, 28 constitute a part of a holding structure 25 that holds the light guide plate 21 so that it does not fall off the reflecting plate 22. The first and second arms 27, 28 according to this embodiment protrude laterally from the left and right side surfaces 21c, 21d, and also protrude rearward from the rear surface 21e of the light guide plate 21, as shown in Fig. 7. A locking claw 29 protruding downward is formed at the lower rear ends of the first and second arms 27, 28, respectively. An upwardly projecting protrusion 30 is formed on the first arm 27 that protrudes from the right side surface 21c of the light guide plate 21. Therefore, the pair of left and right arms 27, 28 are formed asymmetrically.

[0022] The reflector 22 is molded into a predetermined shape using a synthetic resin material, and has a recess 31 for accommodating the light guide plate 21, as shown in FIG. 4(B). The synthetic resin material for forming the reflector 22 may be colored, for example, white. The recess 31 is formed so as to open toward the front and downward of the housing 1. As shown in FIG. 8, the recess 31 is formed by a bottom wall 31a that faces the front of the housing 1, and a right side wall 31b, a left side wall 31c, and an upper wall 31d that protrude forward from the bottom wall 31a, and is configured so that the wall surfaces serve as reflective surfaces. That is, the recess 31 is formed with four reflective surfaces 32 to 35 as wall surfaces, as shown in FIG. 8 and FIG. 9.

[0023] These reflecting surfaces 32 to 35 are surfaces opposed to the other surfaces excluding the irradiation surface (front surface 21a) and the incidence surface (bottom surface 21b) of the light guide plate 21. More specifically, the four reflecting surfaces 32 to 35 are a first reflecting surface 32 oriented toward the front of the housing 1 and a second reflecting surface 33 oriented toward the right of the housing 1 as shown in Fig. 8, and a third reflecting surface 34 oriented toward the left of the housing 1 and a fourth reflecting surface 35 oriented downward as shown in Fig. 9.

[0024] When the light guide plate 21 is inserted into the recess 31, the light guide plate 21 is surrounded by these first to fourth reflecting surfaces 32 to 35. The first to fourth reflecting surfaces 32 to 35 are configured to reflect light that has entered the light guide plate 21 from the incident surface (lower surface 21b) of the light guide plate 21 and guide the light to the irradiation surface (front surface 21a) of the light guide plate 21. The light guided to the front surface 21a of the light guide plate 21 is diffused by a diffusion-treated portion of the front surface 21a and exits in front of the light guide plate 21.

[0025] 8 and 9, a first notch 41 is formed between the right side wall 31b and the top wall 31d of the reflector 22, and a second notch 42 is formed between the left side wall 31c and the top wall 31d. These first and second notches 41, 42 are formed at positions corresponding to the pair of arms 27, 28 of the light guide plate 21 so that the arms 27, 28 can be inserted and removed. Therefore, by inserting the light guide plate 21 into the recess 31 of the reflector 22, the first arm 27 of the light guide plate 21 is inserted into the first notch 41 from the front of the housing 1, and the second arm 28 is inserted into the second notch 42 from the front of the housing 1.

[0026] The lower ends of the first and second cutouts 41, 42 (the upper end of the right side wall 31b and the upper end of the left side wall 31c) are provided with protrusions 43 that protrude upward. These protrusions 43, 43 are formed so that the locking claws 29 formed on the first and second arm portions 27, 28 of the light guide plate 21 climb over them when the light guide plate 21 is inserted into the recess 31 of the reflector plate 22. Therefore, as shown in Figs. 10(A) to 10(B), when the first and second arm portions 27, 28 are inserted into the first and second cutouts 41, 42 and the claws 29 climb over the protrusions 43, the claws 29 are locked to the protrusions 43, and the locking portion 44 consisting of the claws 29 and the protrusions 43 restricts the retraction movement of the first and second arm portions 27, 28. 10A shows a state before the light guide plate 21 is inserted into the recess 31, and FIG. 10B shows a state after the light guide plate 21 has been inserted into the recess 31. As shown in FIG.

[0027] The first and second arms 27, 28 (a pair of arms), the first and second cutouts 41, 42 (a pair of cutouts), and the locking portion 44 constitute a holding structure 25 that holds the light guide plate 21 in the recess 31. In the illumination member 7 according to this embodiment, all of the light guide plates 21 are housed in all of the recesses 31, and each light guide plate 21 is held in the recess 31 by the holding structure 25, thereby forming a reflector assembly 24.

[0028] As shown in Fig. 8 and Fig. 9, the upper end of the second cutout 42, i.e., the left end of the upper wall 31d, is provided with a rib 45 for preventing inversion, which protrudes leftward from the front half, on the rear half. When the light guide plate 21 is inserted into the recess 31 of the reflector 22 with the front and back sides correct, the second arm 28 of the light guide plate 21 is inserted below the rib 45, as shown in Fig. 10(B). However, when the light guide plate 21 is reversed, the first arm 27 of the light guide plate 21 is inserted into the second cutout 42 of the reflector 22. In this case, as shown in Fig. 11, the rib 45 comes into contact with the protrusion 30 of the first arm 27, preventing the first arm 27 from being inserted into the second cutout 42 at the correct position. In other words, the first and second arm portions 27, 28 of the light guide plate 21 and the first and second cutout portions 41, 42 of the reflector plate 22 are each formed asymmetrically, and a configuration is adopted that prevents the light guide plate 21 from being accommodated in the recess 31 with the front surface 21a of the light guide plate 21 facing the bottom wall 31a of the recess 31.

[0029] As shown in Figure 5, the connecting structure 23 that connects multiple reflectors 22 together is composed of a plurality of first and second connecting pieces 51, 52 provided on the end of the lighting member 7 opposite the LED 8 (the upper wall 31d of the reflector 22), and a plurality of third and fourth connecting pieces 53, 54 provided on the bottom wall 31a of the reflector 22. The first connecting piece 51 is formed in a gate shape having a cylindrical axis 55 extending in the left-right direction of the housing 1, and is provided at both ends and the center in the direction in which the multiple reflectors 22 are arranged. The second connecting piece 52 is formed in a plate shape extending in the left-right direction of the housing 1, and connects the reflectors 22 that are not connected by the first connecting piece 51 to each other.

[0030] As shown in Fig. 12, the shaft 55 of the first connecting piece 51 is formed so as to be insertable from above into the bearing 13 provided on the side wall 5. Therefore, the illumination member 7, which is made up of a plurality of light guide plates 21 and a plurality of reflectors 22, can swing about the shaft 55 relative to the side wall 5 in a state in which the shaft 55 is inserted from above into the bearing 13 in an attitude inclined with respect to the side wall 5 (see Fig. 14), as will be described in detail later. The shaft 55 and the bearing 13 of the side wall 5 constitute a shaft support portion 57 of a mounting structure 56 that mounts the lighting member 7 to the case 4 .

[0031] The third connecting piece 53 is formed so as to extend along the bottom wall 31a to the lower end of the bottom wall 31a, and is provided at both ends and the center in the direction in which the multiple reflectors 22 are arranged. A protrusion 58 protruding downward from the bottom wall 31a and a reinforcing rib 59 are provided at the lower end of the third connecting piece 53 {the end close to the light source (LED 8) of the lighting member 7}. The protrusion 58 is formed so as to be engaged with the notch 15 of the lighting board 14 as shown in FIG. 12 when the lighting member 7 is attached to the side wall 5 of the case 4. When the protrusion 58 is engaged with the notch 15, the lighting member 7 cannot swing around the shaft 55 in a direction away from the side wall 5. Therefore, the notch 15 and the protrusion 58 constitute a swing restricting portion 60 that restricts the swing of the lighting member 7 in a direction away from the side wall 5. The mounting structure 56 for mounting the illumination member 7 to the case 4 according to this embodiment is configured using the above-mentioned pivot support portion 57, the swing restriction portion 60, and the opening 5a of the side wall 5.

[0032] The fourth connecting piece 54 is provided between the third connecting pieces 53 on both ends and the third connecting piece 53 on the center side. As shown in Figures 8 and 9, the third connecting piece 53 and the fourth connecting piece 54 have a guide portion 61 extending in the front-rear direction between the right side wall 31b and the left side wall 31c of two adjacent reflectors 22. The guide portion 61 is composed of a left guide piece 61a that runs along the right side wall 31b and a right guide piece 61b that runs along the left side wall 31c. As shown in Figure 13, when the illumination member 7 is attached to the side wall 5 of the case 4, the partition wall 11 of the side wall 5 is inserted between the left guide piece 61a and the right guide piece 61b. The left guide piece 61a and the right guide piece 61b have inclined surfaces 62, 63 formed at their front ends such that the distance between the guide pieces gradually increases toward the front.

[0033] Next, a procedure for attaching the illumination member 7 to the side wall 5 of the case 4 will be described. The illumination member 7 is assembled by assembling the light guide plates 21 to the multiple reflectors 22 of the reflector assembly 24. To attach the illumination member 7 to the side wall 5 of the case 4, first, the illumination member 7 is positioned above the side wall 5, and as shown in FIG. 14, the illumination member 7 is lowered in a tilted state so that the lower end is located rearward of the upper end. Then, as shown in FIG. 15, the shaft 55 is inserted into the bearing 13 of the side wall 5 from above, and the illumination member 7 is swung around the shaft 55 so that the lower end of the illumination member 7 approaches the side wall 5. During this swinging process, the partition wall 11 of the side wall 5 is inserted into the guide portion 61 of the reflector 22, and the illumination member 7 is positioned in the left-right direction of the case 4.

[0034] As the illumination member 7 swings, the front end of the right wall 31b, the front end of the left wall 31c, and the front end of the top wall 31d of the reflector 22 are inserted into the opening 5a of the side wall 5. During this swinging process, the protrusion 58 provided on the lower end of the third connecting piece 53 comes into contact with the upper surface of the substrate 14, but the illumination member 7 is further swung by sliding the protrusion 58 on the substrate 14. At this time, the shaft 55 of the illumination member 7 floats slightly upward from the bearing 13, and the lower end of the light guide plate 21 moves upward away from the substrate 14, so that the lower end of the light guide plate 21 does not come into contact with the LEDs 8 on the substrate 14.

[0035] 12, the projection 58 fits into the notch 15, and the lighting member 7 is attached to the side wall 5 along the side wall 5. The projection 58 fits into the notch 15, and the lighting member 7 cannot swing in the opposite direction to the above. At this time, the partition wall 11 of the side wall 5 is inserted into the guide portion 61 of the lighting member 7, and the right wall 31b, left wall 31c, and top wall 31d of the reflector 22 are inserted into the opening 5a of the side wall 5, so that the lighting member 7 does not move left / right or up / down relative to the side wall 5.

[0036] By attaching the illumination member 7 to the side wall 5 in this manner, the recessed portion 26 of the light guide plate 21 is positioned directly above the LED 8. When the LED 8 emits light in this state, the light from the LED 8 passes through the light guide plate 21 and is reflected by the first to fourth reflecting surfaces 32 to 35, and is emitted forward from the irradiation surface of the light guide plate 21.

[0037] In the illumination member 7 according to this embodiment, the light guide plate 21 is housed in the recess 31 of the reflector 22, so that the entire illumination member 7 is formed in a plate shape, and therefore the illumination member 7 can be arranged along the side wall 5 of the case 4 as shown in Fig. 12. Therefore, it is possible to provide a compact illumination member for electronic devices that can arrange the light source near the side wall while adopting a configuration that changes the direction in which light travels.

[0038] The holding structure 25 for holding the light guide plate 21 of the illumination member 7 according to this embodiment is composed of the first and second arm portions 27, 28 of the light guide plate 21, the first and second cutout portions 41, 42 formed in the reflector 22, and the locking portions 44 provided on the first and second arm portions 27, 28 and the first and second cutout portions 41, 42. Therefore, the light guide plate 21 is held by the reflector 22 simply by inserting the light guide plate 21 into the recessed portion 31 of the reflector 22, so that the light guide plate 21 can be easily attached to the reflector 22.

[0039] In this embodiment, a treatment for diffusing light is applied to the front surface 21a of the light guide plate 21. The first and second arm portions 27, 28 of the light guide plate 21 and the first and second cutout portions 41, 42 of the reflector plate 22 are formed asymmetrically, and a configuration is adopted in which the light guide plate 21 is restricted from being housed in the recess 31 with the front surface 21a of the light guide plate 21 facing the bottom wall 31a of the recess 31. This makes it possible to prevent the light guide plate 21 from being attached to the reflector plate 22 in an upside-down state, thereby making it possible to provide an illumination member that always shines correctly.

[0040] The mounting structure 56 for the electronic device lighting member 7 according to this embodiment includes a pivot support portion 57 that detachably and swingably supports one end (upper end) of the lighting member 7 opposite to the light source on the side wall 5, an opening 5a formed in the side wall 5 so that the right side wall 31b, the left side wall 31c and the upper wall 31d (portions forming the first to fourth reflecting surfaces 32 to 35) of the reflector 22 can be inserted, and a swing restriction portion 60 that restricts the swing of the lighting member 7 in a direction away from the side wall 5. The pivot support portion 57 is composed of a shaft 55 of the reflector 22 and a bearing 13 of the side wall 5. The swing restriction portion 60 is composed of a protrusion 58 protruding from the lower end (end close to the light source) of the lighting member 7 and a notch 15 formed in the board 14 on which the LED 8 (light source) is mounted.

[0041] According to this mounting structure 56, the illumination member 7, which is made up of the light guide plate 21 and the reflector plate 22, is swung along the side wall 5 with one end (shaft 55 provided at the end opposite to the light source) supported by the bearing 13 on the side wall 5, and the portion of the reflector plate 22 forming the first to fourth reflecting surfaces 32 to 35 is inserted into the opening 5a of the side wall 5 and the protrusion 58 of the reflector plate 22 is engaged with the notch 15 of the substrate 14, thereby mounting the illumination member 7 so that it cannot move in the case 4. Therefore, mounting of the illumination member 7 is completed by the operation of swinging the illumination member 7, so that a mounting structure for an illumination member for electronic equipment that enables the illumination member 7 to be easily mounted on the side wall 5 can be provided.

[0042] The reflectors 22 according to this embodiment are arranged at positions spaced apart from each other in the direction in which the two side surfaces of the light guide plate 21 are arranged, and adjacent reflectors 22 are connected to each other by a connecting structure 23 to form a reflector assembly 24. The side wall 5 of the case 4 has openings 5a formed at positions corresponding to the individual reflectors 22 of the reflector assembly 24, and has partition walls 11 protruding toward the inside of the case 4 between the adjacent openings 5a. The connecting structure 23 of the reflector assembly 24 has a guide portion 61 into which the partition wall 11 is inserted as the illumination member 7 swings about the pivot portion 57 and moves along the side wall 5.

[0043] Therefore, by inserting the partition wall 11 into the guide portion 61 when attaching the illumination member 7 to the side wall 5, even though the illumination member 7 includes a plurality of light guide plates 21 and reflectors 22 and is formed long in the left-right direction of the housing 1, the position of the illumination member 7 relative to the side wall 5 in the left-right direction of the housing 1 can be easily determined. This makes it possible to attach the illumination member 7 even easier.

[0044] In the above-described embodiment, an example has been shown in which the present invention is applied to an illumination member 7 including a plurality of light guide plates 21 and a plurality of reflecting plates 22. However, the present invention is not limited to such a case, and can also be applied to an illumination member including one light guide plate 21 and one reflecting plate 22. [Explanation of symbols]

[0045] 1... Housing, 4... Case, 5... Side wall, 5a... Opening, 7... Lighting member for electronic equipment, 8... LED (light source), 11... Partition wall, 13... Bearing, 14... Board, 15... Notch, 21...Light guide plate, 21a...Front surface (irradiation surface), 21b...Bottom surface (incident surface), 21c, 21d...Side surface, 22...Reflector plate, 23...Connection structure, 24...Reflector assembly, 25...Holding Structure, 27...first arm portion, 28...second arm portion, 31...recess, 31a...bottom wall, 32...first reflective surface, 33...second reflective surface, 34...third reflective surface, 35...fourth reflective surface, 41...first notch portion, 42...second notch portion, 44...engagement portion, 55...axis, 56...mounting structure, 57...axis support portion, 58...protrusion, 60...swing regulation portion, 61...guide portion.

Claims

1. a light guide plate formed in a plate shape using a light-transmitting material, one front surface in a thickness direction being an irradiation surface and one side surface being an incidence surface facing the light source; a reflector having a plurality of reflecting surfaces opposed to the front surface and surfaces other than the incident surface of the light guide plate; a holding structure for holding the light guide plate in a recess formed with the plurality of reflecting surfaces as wall surfaces, The holding structure includes a pair of arms protruding laterally from two side surfaces of the light guide plate adjacent to the incident surface, a pair of notches formed at positions corresponding to the arm portions of the recess so that the arm portions can be inserted and removed; a locking portion provided on the arm portion and the notch portion, the locking portion restricting a retreating movement of the arm portion inserted into the notch portion, The front surface of the light guide plate is treated to diffuse light, A lighting component for electronic devices, characterized in that the pair of arms and the pair of cutouts are each formed asymmetrically, and a configuration is adopted that prevents the light guide plate from being accommodated in the recess with the front surface of the light guide plate facing the bottom of the recess.

2. 13. A mounting structure for an electronic device lighting member according to claim 1, comprising: a pivot support portion that supports one end of the electronic device lighting component opposite to the light source on the side wall in a detachable and swingable manner; an opening formed in the side wall into which a portion of the reflector that forms the reflective surface is inserted when the electronic device lighting component swings about the pivot portion to move along the side wall; and a swing restriction portion that restricts swing of the electronic device lighting component in a direction away from the side wall, The pivot support portion is An axis is provided on the reflector so as to extend in a direction in which the two side surfaces are aligned; a bearing provided on the side wall so as to support the shaft from the bottom wall side, The swing restriction portion is a protrusion provided on an end portion of the electronic device lighting component adjacent to the light source; a notch formed in a board on which the light source is mounted so that the protrusion can engage with the notch,

3. 3. The mounting structure for an electronic device lighting member according to claim 2, The reflectors are arranged at positions spaced apart from each other at a predetermined interval in a direction in which the two side surfaces are arranged, and adjacent reflectors are connected to each other by a connecting structure to form a reflector assembly; the side wall has the openings formed at positions corresponding to the individual reflectors of the reflector assembly, and has partition walls between adjacent openings protruding toward the inside of the case; An attachment structure for an electronic device lighting component, characterized in that the connecting structure of the reflector assembly has a guide portion into which the partition wall is inserted as the electronic device lighting component swings around the pivot portion and moves along the side wall.

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