JP3626049B2 - Display and wireless communication device incorporating the display - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display having a structure in which a display body is illuminated by a light source, and a wireless communication apparatus incorporating the display.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a display device having a structure for illuminating a display body for displaying characters and the like with a light source. For example, Japanese Patent Laid-Open No. 5-27240 discloses a configuration in which a liquid crystal display is provided on a light guide plate having a recess formed on the bottom surface near a side surface, and a light emitting diode serving as a light source is accommodated in the recess. Yes.
[0003]
Japanese Utility Model Laid-Open No. 5-55567 discloses a light having a recessed portion for housing a chip of a light emitting diode (hereinafter referred to as an LED) on a printed circuit board on which a plurality of light emitting diode chips are mounted. There is disclosed an LED surface light source device in which a guide is disposed and a diffusion plate is further installed above the guide. The display body is uniformly irradiated by the LED surface light source device.
[0004]
A display device 101 as shown in FIG. 14 is also known. The display device 101 includes a mounting bracket 102, a display body (hereinafter referred to as an LCD display body) 103 including an LCD (Liquid Crystal Display) 103, an interconnector 104, a light guide 105, a display unit 106, and a control unit 107 in this order from the front side. It becomes the composition arranged.
[0005]
The mounting bracket 102 has a side wall portion 111 and a front flat surface portion 112 on which the side wall portion 111 stands. Five fixing claws 113 for fixing the display unit 106 to the mounting bracket 102 are provided in a part of the wall portion 111, and the front flat surface portion 112 is provided with a large opening 114 at the center thereof.
[0006]
The LCD display 103 is provided with a contact step portion 115 with which the interconnector 104 contacts. The interconnector 104 has a conductive portion containing carbon in the center of zebra rubber, and connects the LCD display body 103 and each connection terminal portion of the display unit 106. The light guide 105 is made of a transparent acrylic resin, and has four cutout recesses 116 at one side end.
[0007]
The display unit 106 includes a circuit board 121 and LEDs 122 attached to the circuit board 121. The LED 122 is a side-emitting type that is attached so as to irradiate light in a direction parallel to the plane of the circuit board 121, and is housed in the cutout recess 116. The control unit 107 is a printed circuit board having circuits printed on both sides, and the mounting bracket 102 is fixed.
[0008]
The display device 101 configured in this way is incorporated in a front operation panel unit 132 such as a wireless communication device 131 as shown in FIG. The LCD display body 103 is disposed to face the window frame 133 provided in the front operation panel unit 132, and a portion surrounded by the window frame 133 is a display unit 134.
[0009]
[Problems to be solved by the invention]
In each conventional display, when a display body such as an LCD display body is illuminated, a light source such as an LED is housed in the recess, which is advantageous in terms of space and light diffusion. However, in the conventional display 101, as shown in FIG. 15, the resin portion 123 in which the LED 122 is sealed, that is, the light source portion often occurs, and light unevenness is likely to occur. .
[0010]
This is because a device such as the wireless communication device 131 requires flattening and requires a large display portion, so that a window frame 133 opposite to the side on which the function keys 135 are arranged is formed. This occurs because the height L of the portion must be reduced. When the height L is reduced, the light emitting diode 122 installed on the circuit board 121 cannot be covered with the portion of the front operation panel 132 that forms the window frame 133. Further, even if the LED 122 is hidden inside the window frame 133, if the position is close to the window frame 133, light unevenness also appears on the display unit 134. The occurrence of such light unevenness reduces the sense of quality of the apparatus and sometimes returns it as a defective product.
[0011]
Further, in the conventional display 101, when the display unit 106 is fixed to the mounting bracket 102, the circuit board 121 of the display unit 106 is pressed toward the opening 114 side and integrated by bending the fixing claw 113 inward. Yes. When this integration is performed, the interconnector 104 is compressed, and when the fixing claw 113 on the interconnector 104 side is bent, portions other than the fixing claw 113 are lifted, and the fixing work is difficult. That is, it is necessary to hold down the display unit 106 until all the fixing claws 113 are bent and the display unit 106 is held on the mounting bracket 102.
[0012]
The present invention has been made to solve the above-described problems, and reduces unevenness of light of a display body to be illuminated, and also attaches a circuit board on which a light source for display body illumination is mounted to an attachment member. An object of the present invention is to provide a display capable of improving the work efficiency and a wireless communication device incorporating the display.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the display of the present invention is Has an engaging projection A circuit board on which a light source for illuminating a display body is mounted, and a circuit board having an engagement hole into which an engagement protrusion enters a side wall portion and an opening in the center of a front plane portion standing by the side wall portion And a display body disposed between the mounting member and the circuit board and facing the opening. The light source is arranged on the engaging protrusion so as to be in the engaging protrusion or on the engaging hole. ing.
[0014]
For this reason, the light source for display body illumination can be arrange | positioned in the position away from the opening of the attachment member, and the light nonuniformity of the display body part visible from the outside is reduced. In addition, when the circuit board on which the light source for illuminating the display body is mounted is attached to the mounting member, the engagement protrusions of the circuit board are inserted into the engagement holes, so that positioning and lifting are prevented, and the fixing work is performed. Efficiency is improved.
[0015]
In another invention, in addition to the display of the above-described invention, the display body is an LCD display body, the light source is a light emitting diode, and the mounting member is a metal mounting bracket. Therefore, the LCD display body can be illuminated with a powerful light source, and the circuit board is firmly fixed to the metal mounting bracket.
[0016]
Further, in another invention, in addition to the display of each of the above-described inventions, the light source is a top light emitting type light source that illuminates a direction perpendicular to the surface of the circuit board, and a plurality of engaging protrusions are provided. Part To each One top light emission type light source is mounted.
[0017]
For this reason, since the display body is illuminated so as to hit the entire lower surface thereof, the light unevenness is greatly reduced as compared with a side light emitting type such as a side light emitting diode. In addition, since one light source is attached to each of the plurality of engaging protrusions or in the vicinity thereof, illumination without light unevenness can be achieved.
[0018]
In addition to the indicators of the inventions described above, the indicator of another invention is provided with a frame part surrounding the opening in the mounting member, and when viewed from the front, the light source for illuminating the display body is covered by the frame part. The light source is arranged as shown. For this reason, when such a display device is used in various electronic devices with a display unit, the light source is not visible from the outside, and light unevenness can be reliably reduced.
[0019]
Further, in another invention, in addition to the display of each of the above-described inventions, a rubber interconnector that contacts the contact terminal portion of the display body is arranged on the side opposite to the side on which the engaging projection is installed, The interconnector is compressed and sandwiched between a connection terminal portion and a contact terminal portion provided on the surface of the substrate.
[0020]
When such a rubber interconnector is arranged, the engaging protrusion side does not rise even when the interconnector side of the circuit board is pressed. Moreover, the circuit board can be fixed by pressing the interconnector strongly, and the interconnector connectivity (conductivity) is stabilized.
[0021]
In another invention, in addition to the display of each of the above-described inventions, an engagement projection portion on which a light source for illuminating the display body is mounted is provided in one half region with the center line of the circuit board as a boundary. Another display light source is arranged in one half region.
[0022]
With this configuration, two or more types of display can be performed on one display unit. And since both light sources are arrange | positioned in the position which was separated, it can reduce that the light of both light sources leaks to the other display part mutually.
[0023]
Furthermore, in another invention, in addition to the above-described display, another display light source is a multicolor light emitting diode, and light leaks from one light source side to the other light source example between the light source for display body illumination. Preventive means for preventing this is provided. For this reason, the display becomes glaring, and the high-class feeling of the apparatus and the clarity of the display are brought about. In addition, light leakage prevention means can further reduce light leakage to other display portions.
[0024]
According to another aspect of the present invention, there is provided a wireless communication device in which the display device according to any one of claims 1 to 7 is disposed on a front operation panel unit, and a display body is disposed facing the display panel of the operation panel unit. In addition, the light source for illuminating the display body is prevented from appearing in the transparent portion of the display panel.
[0025]
For this reason, the light source for display body illumination can be arrange | positioned in the position away from the opening of the attachment member, and the light nonuniformity of the display body part visible from the outside is reduced. In addition, when attaching the circuit board on which the light source for illuminating the display body is mounted to the mounting member, by inserting the engaging protrusion of the circuit board into the engaging hole, positioning and prevention of lifting are achieved, and the work efficiency of the fixing work Will improve. In addition, the wireless communication device is often used even in a dark place, but since there is little light unevenness, the sense of quality is further increased in a dark place, and the display can be recognized more clearly. Furthermore, in-vehicle wireless communication devices and the like are strongly demanded to flatten, but even if flattened, light unevenness hardly occurs and flattening becomes easy.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a display according to an embodiment of the present invention and a wireless communication device incorporating the display will be described with reference to FIGS. First, the first embodiment will be described with reference to FIGS.
[0027]
The wireless communication device 1 according to the first embodiment is a device that is mounted at a substantially central position of a front panel of a car. As shown in FIG. 1, a front operation panel unit 2 of the wireless communication device 1 has a power button 3, a communication sound up button 4 and a down button 5, a monitor button 6 for monitoring, It has a scan button 7 for performing scanning, a function key portion 8 composed of four other function buttons, a channel up button 9 and a down button 10, a display panel 11, and a microphone portion 12 into which a microphone terminal is inserted. ing.
[0028]
Between the power button 3 and the up button 4, there is provided a transmission / reception display unit 13 in which red lights up during transmission and green lights up during reception. In addition, three small protrusions 14 are provided at the boundary of each button of the function key unit 8.
[0029]
The display panel 11 is formed of a transparent resin material, and black coating is applied to the outer peripheral end portion 11a of the back portion, and a portion surrounded by the outer peripheral end portion 11a is a transparent portion 11b. The microphone part 12 is formed by a fitting hole 12a into which a microphone terminal can be fitted, and a protruding part 12b protruding so as to surround the fitting hole 12a. Further, angle-shaped protrusions 15 and 16 are provided between the up button 4 and the down button 5 and between the up button 9 and the down button 10, respectively.
[0030]
As shown in FIG. 2, the front operation panel unit 2 has a display panel. 11 A resin-made box-like operation panel body 21 having a hole for each button, a rubber button body 22 provided in each button portion, and a display panel 11 And a display unit assembly 23 having a light source for projecting characters and the like.
[0031]
The display panel 11 is fixed to the operation panel body 21 with an adhesive. Further, the operation panel body 21 includes a hole 21a for the power button 3, a hole 21b for the reception display unit 13, a hole 21c for the up button 4, a hole 21d for the down button 5, and a monitor button 6. Hole 21e, a hole 21f for the scan button 7, four holes 21g for the other function key sections 8, and an up button 9 Hole 21h and down button 10 Each hole 21j for use is provided. Further, the operation panel body 21 has a two-stage configuration of a small-diameter front portion 24 and a large-diameter rear portion 25, and is provided so that four attachment locking portions 26 protrude from the large-diameter rear portion 25 symmetrically and laterally.
[0032]
The button body 22 includes buttons 3, 4, 5, 6, 7, 8, 9, 10, a column part 27 for guiding light to the operation panel body 21 side and lighting it on the reception display unit 13, A recess 22a and a notch 22b through which a holding member (not shown) that passes through the display unit assembly 23 from the rear of the display unit assembly 23 and contacts the button body 22 are provided.
[0033]
As shown in FIG. 3, the display unit assembly 23 includes a metal mounting bracket 31 serving as a mounting member, a light guide 32 made of transparent acrylic, and a color or non-color for the color guide disposed on the light guide 32. The LCD display 33, the rubber interconnector 34 fitted in the long-diameter cutout hole 32 a of the light guide 32 so as to be connected to the terminal portion of the LCD display 33, and the LCD display 3 on the circuit board 36. The display unit 40 to which the four LCD illumination LEDs 37 serving as the first light source for illuminating the light source and the mounting bracket 31 to which the above-described components are attached are fixed and the control unit 41 on which the control circuit is printed. It consists of and.
[0034]
The mounting bracket 31 has side wall portions 51a, 51b, 51c, 51d that surround the four sides, and a front flat surface portion 52 that also serves as a frame portion on which these wall portions 51a to 51d are erected. The wall 51a has two fixing claws 53a for fixing the display unit 40, two engagement claws 53b for fixing to the control unit 41, and an engagement protrusion 36a described later of the circuit board 36. Four engaging holes 31a are provided. The opposite wall 51b is provided with three fixing claws 53a and two engaging claws 53b.
[0035]
In order to prevent misplacement of one linear claw 53c for preventing erroneous insertion into the control unit 41 and positioning and the LCD display body 33 on one of the short side walls 51c, as shown in FIG. A long hole 31b into which the protrusion 33a of the LCD display body 33 enters is provided. One straight claw 53c is provided on the other wall 51d on the short side. The front plane portion 52 is provided with a large opening 54 for directing the central portion of the LCD display body 33 toward the display panel 11.
[0036]
As shown in FIGS. 3 and 5, the light guide 32 is an interconnector. 34 In addition to the through-hole 32a, an LCD mounting portion 55, which is a flat surface for mounting the LCD display body 33, and four recesses 32b, 32c, 32d, and 32e into which the four LCD illumination LEDs 37 enter. Have.
[0037]
As shown in FIG. 6, the LCD display 33 is formed by bonding and fixing a light diffusion plate 56 to which a diffusion seal 56 b is attached and a liquid crystal body 57 in which liquid crystal is sealed. The interconnector 34 is in contact with a connecting portion provided on the lower end surface of the portion 57a from which the liquid crystal body 57 further protrudes. The protrusion 33 a is provided so as to connect the boundary between the light diffusion plate 56 and the liquid crystal body 57.
[0038]
The interconnector 34 has a three-layer structure in which zebra rubbers 34 a and 34 a are formed on both sides, and a rubber material 34 b containing carbon is disposed in the center. One of the long side surfaces is in contact with the liquid crystal body 57 and the other is on the circuit board 36. In contact.
[0039]
Four LCD illumination LEDs 37 are attached to the circuit board 36 of the display unit 40 as described above. 34 And a circuit is formed on both sides. In addition, the circuit board 36 is provided with four engagement protrusions 36a that engage with the engagement holes 31a of the mounting bracket 31, and the respective LCDs so that a part of each of the engagement protrusions 36a is applied. An illumination LED 37 is arranged. When the LCD illumination LED 37 is assembled as the display unit assembly 23, it is disposed in the concave portions 32b, 32c, 32d, 32e of the light guide 32.
[0040]
Each LCD illumination LED 37 is a top emission type included in the top emission type that emits light in a direction perpendicular to the plane of the circuit board 36, and as shown in FIG. It is arranged to take. That is, when the protrusion length of the engagement projection 36a is W1, the distance W2 from the end 36b of the engagement projection 36a of the LCD illumination LED 37 is W2 <W1, and the LCD illumination LED 37 The farthest distance W3 is arranged such that W3> W1.
[0041]
The thickness of the wall 51a of the mounting bracket 31 is approximately W1, and the inner surface thereof is disposed in contact with or close to the inner end 36c of the circuit board 36. The end surface 32f provided with the concave portions 32b to 32e of the light guide 32 is disposed close to or in contact with the inner surface of the wall portion 51a. For this reason, the inner surface of the wall portion 51 a of the mounting bracket 31 and the end surface 32 f of the light guide 32 are arranged so as to cross the LCD illumination LED 37. As a result, a part of the shape of the LED 37 for LCD illumination enters the engagement hole 31a, and the remaining portions are housed in the recesses 32b to 32e, respectively.
[0042]
The relationship between the lengths W1, W2, and W3 may be such that W1> W3, and the LCD illumination LED 37 may be completely positioned on the engaging protrusion 36a. Further, it is also possible that W2> W1 so that the LCD illumination LED 37 does not cover the engaging protrusion 36a. In any case, in accordance with various safety standards, W2 must be a predetermined length or longer. Compared with the case where only W2 is disposed on the inner side from the inner end 36c, the presence of the engaging protrusion 36a allows the LCD illumination. It becomes possible to arrange | position LED37 for use more outward.
[0043]
In the control unit 41, two fitting holes 61 into which the two engaging claws 53b of the wall 51b of the mounting bracket 31 are fitted, and two cutout holes 62 into which the two engaging claws 53b of the wall 51a are fitted. , Two insertion holes 63 into which the linear claws 53 are inserted, a power switch unit 64 in which the conduction part on the back surface of the power button 3 contacts and separates, and a communication in which the conduction part on the back surface of the communication sound up button 4 contacts and separates. A sound up switch unit 65, a communication sound down switch unit 6 in which the conductive part on the back side of the communication sound down button 5 contacts and separates, a monitor switch unit 67 in which the conductive unit on the back side of the monitor button 6 contacts and separates, and a scan button 7 is connected to and away from the switch part 68, the function switch part 69 is connected to and away from the back part of the function key part 8, and the back part of the channel up button 9 is connected to the back part. A channel up switch unit 70 to release the conduction portion of the back of the down button 10 of the channel and toward or away from the channel down switch unit 71 is provided.
[0044]
The control unit 41 is further provided with two insertion holes 41a and 41a for positioning with other members when the display unit assembly 23 is assembled into the operation panel body 21. The two insertion holes 41a and 41a are disposed so as to face the recess 22a and the notch 22b of the button body 22, respectively.
[0045]
Next, a method for assembling the front operation panel unit 2 of the wireless communication device 1 configured as described above will be described.
[0046]
First, the mounting bracket 31 is turned upside down and the opening 54 is at the bottom. First, the projection 33a of the LCD display 33 is dropped into the elongated hole 31b of the wall 51c so that the whole is put in an oblique state. Next, the light guide 32 is placed, and the interconnector 34 is further dropped into the through hole 32a. The interconnector 34 may be disposed on the LCD display body 33 in advance before the light guide 32 is incorporated into the mounting bracket 31.
[0047]
Thereafter, the display unit 40 is temporarily fixed to the mounting bracket 31. As shown in FIG. 8A, this temporary fixing is performed with the engagement protrusion 36a engaged with the mounting bracket 31 in an inclined state so that the engagement protrusion 36a side of the circuit board 36 is in the lower position. This is done by fitting the hole 31a and then inserting the opposite side into the mounting bracket 31.
[0048]
Next, the tips of the five fixing claws 53a of the mounting bracket 31 are bent inward. By this bending, the tip of the circuit board 36 comes into contact with the back surface of the circuit board 36 in FIG. Insert firmly. FIG. 8B shows a state in the vicinity of the LED 37 for illuminating the LCD when attached. The engagement hole 31a is formed in consideration of the ease of insertion of the circuit board 36, and as shown in FIG. 8B, when the circuit board 36 is disposed horizontally, the engagement protrusion 36a. It is comprised so that a clearance gap may generate | occur | produce above and below.
[0049]
Thereafter, the mounting bracket 31 to which the respective members are attached is fixed to the control unit 41. In this fixing, the four engaging claws 53b are put in the two fitting holes 61 and the two notch holes 62, the two linear claws 53c are put in the fitting holes 63, and then the four engaging claws 53b are moved from above. The center of the engaging claw 53b is hit with a punch or the like, the length in the length direction is further increased, and both ends of each engaging claw 53b are covered with the back surface of the control unit 41 in FIG. The two linear claws 53c and the insertion holes 63 are used for preventing erroneous insertion and positioning.
[0050]
Next, the operation panel body 21, the button body 22, and the display unit assembly 23 shown in FIG. 2 are assembled.
[0051]
First, the operation panel body 21 is assembled with the front surface (upper side in FIG. 2) at the bottom and the button body 22 dropped into the inside. Next, the display unit assembly 23 is dropped so that the surface portion of the control unit 41 contacts the button body 22. At this time, the opening 54 of the mounting bracket 31 is formed on the display panel. 11 It is made to oppose. Thereafter, the front operation panel unit 2 is fitted and fixed to the main body side of the wireless communication device 1. Thus, the wireless communication device 1 is completed. Note that the main body side of the wireless communication device 1 is the same as a conventionally known example, and the description thereof is omitted.
[0052]
FIG. 9 shows the positional relationship of the LCD illumination LEDs 37 after being assembled. Each LCD illumination LED 37 does not exist in the transparent portion 11b of the display panel 11, but is located at the back from the window frame 11c of the black outer peripheral end portion 11a. Further, each LCD illumination LED 37 is disposed so as to be completely covered by the frame portion / front plane portion 52 of the mounting bracket 31 having the opening 54 on the back side of the window frame 11c. For this reason, the LCD unevenness LED 37 is a top emission type, and light unevenness is greatly reduced.
[0053]
Next, a display unit assembly 81 serving as a display according to the second embodiment of the present invention will be described with reference to FIGS. The display unit assembly 81 is incorporated in a wireless communication device of the same type as the wireless communication device 1, and the configuration thereof is substantially the same as that of the display unit assembly 23 described in the first embodiment. For this reason, the same members and the same parts as those of the display unit assembly 23 are denoted by the same reference numerals, and the description thereof is omitted or simplified.
[0054]
As shown in FIG. 10, the display unit assembly 81 includes a mounting bracket 31, a light guide 82 made of transparent acrylic, and an LCD display for small color characters or non-color characters arranged on the light guide 82. 33, a small rubber interconnector 34 fitted into the long through hole 82a of the light guide 82 so as to be connected to the terminal portion of the LCD display 33, and the elliptical large oblong hole of the light guide 82 A packing 83 made of a white rubber material to be fitted into the fitting hole 82b, and an LCD illumination LED 37 serving as a first light source for illuminating the LCD display 33 on the circuit board 36, and red and green, respectively. The display unit 40 to which the two two-color LEDs 38 and 39 serving as the second light source capable of emitting the two colors are attached and the mounting bracket 31 to which the above-described components are attached are fixed. The control circuit is configured from a printed control unit 41. while.
[0055]
The light guide 82 includes an interconnector as shown in FIGS. 34 In addition to the through-hole 82a and the fitting hole 82b, an LCD mounting portion 55 serving as a recess for mounting the LCD display 33, a recess 82c into which the LCD illumination LED 37 enters, and the incorporation of the LCD display 33 It has a notch recess 82d into which the projection 33a for preventing mistakes enters. Further, the light guide 82 is provided with a hole forming portion 82e surrounding the fitting hole 82b, and a locking portion 82f for locking the packing 83 on the inner periphery thereof.
[0056]
A space S formed by a concave portion that does not penetrate is provided between the hole forming portion 82e and the LCD mounting portion 55. This space S is composed of a space S1 facing the LCD mounting portion 55 of the hole forming portion 82e and two narrow spaces S2 and S3 formed so as to surround the other two surfaces of the hole forming portion 82e. . These spaces reflect light within the space S even if light on the LCD display 33 side leaks to the packing 83 side and vice versa, thereby reducing the influence on the other side. In addition, the strength and perpendicularity of the hole forming portion 82e are maintained and improved.
[0057]
The packing 83 is formed of white ethylene propylene rubber material having good moldability, and has two funnel-shaped through holes 83a and 83b that allow the light of the two-color light emitting LEDs 38 and 39 to pass through while diffusing. That is, as shown in FIG. 13, the hole diameter Φ1 on the side where the two-color light emitting LEDs 38 and 39 are arranged is made smaller than the hole diameter Φ2 on the display panel 9 side, and the diameter is gradually increased. The two-color LED 38 can display three states: a state in which only red light is emitted, a state in which only green light is emitted, and a state in which red and green light are emitted simultaneously and an intermediate color of both colors is displayed. Yes. The same is true for the other two-color LED 39 in that the three states can be displayed.
[0058]
When the packing 83 is attached to the light guide 82, its stepped portion 83c is locked to the locking portion 82f of the light guide 82, so that the positioning is performed and the removal is prevented. When the two members are combined, as shown in FIG. 13, the packing 83 protrudes forward by a height H1 and slightly protrudes to the opposite side by a height H2. The height H2 may be a value that is almost zero, or may be zero or slightly retracted inward.
[0059]
The height H <b> 1 is larger than the thickness of the mounting bracket 31, and the packing 83 slightly protrudes from the front surface of the mounting bracket 31 when assembled as the display unit assembly 81. With this structure, when the display unit assembly 81 is attached to the operation panel body 21, the packing 83 is pressed between the back surface of the display panel 11 and the circuit board 36, and the display panel is pressed by the elastic restoring force of the packing 83. 11 and the circuit board 36 are prevented from being generated.
[0060]
As described above, the LEDs 37, 38, and 39 are attached to the circuit board 36 of the display unit 40. Furthermore, the interconnector 34 A small terminal portion 60 is provided for connection to the circuit, and circuits are formed on both sides. Further, the circuit board 36 is provided with four engagement projections 36a that engage with the engagement holes 31a of the mounting bracket 31, and the LCD illumination is performed so that one part of the engagement projection 36a is applied to the circuit board 36. LED 37 is arranged. When the LCD illumination LED 37 is assembled as the display unit assembly 81, the LCD illumination LED 37 is disposed in the concave portion 82 c of the light guide 82.
[0061]
The LCD illumination LED 37 is disposed in the left half area W1 of FIG. 10 of the circuit board 36, and the two-color light emitting LEDs 38 and 39 are disposed in the right half area W2. The light from each light source in the areas W1 and W2 is difficult to leak to the other display side.
[0062]
Each of the above-described embodiments is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention. is there. For example, instead of the LCD display 33, a display plate on which normal characters or the like are printed, a display device using EL (Electroluminescence), an ECD (Electrochemical Display), or the like may be used.
[0063]
The shapes of the engagement holes 31a and the engagement protrusions 36a may be other shapes such as a semicircular shape in which a flat cylinder is halved, instead of a rectangular parallelepiped shape. Further, the engagement hole 31a may be a recess that does not penetrate instead of the through hole. In this specification, including such a recess, it is called an engagement hole. Further, the number of the engagement holes 31a and the engagement protrusions 36a is not four, but may be other numbers, and the number of the engagement protrusions 36a may be smaller than the number of the engagement holes 31a. .
[0064]
Further, in each of the above-described embodiments, the LCD illumination LEDs 37 are provided on each of the engagement protrusions 36a to be a total of four, or one of the four engagement protrusions 36a is provided to be one. However, the number of the LCD illumination LEDs 37 may be five or more, or two or three. At that time, a plurality of light sources for LCD illumination may be arranged on one engagement protrusion 36a. The light source for the LCD display body may be a simple lamp other than the LCD illumination LED 37, or a light emitting element using EL (Electro luminescence).
[0065]
Further, the light guide 32 may be planar without providing the recesses 32b, 32c, 32d, and 32e. In this case, the circuit board 36 is provided with a recess, and the LCD illumination LED 37 is disposed in the recess. Further, as the mounting member, in addition to the metal mounting bracket 31, it may be made of resin, or may be one in which resin and metal are integrated by insert molding of metal. Further, as the light guides 32 and 82, other transparent materials such as a transparent glass material may be used in addition to the transparent acrylic.
[0066]
Furthermore, the present invention can be applied to various devices other than wireless communication devices, for example, electronic devices such as a radio, a CD player, a modem, and a car navigation system.
[0067]
【The invention's effect】
According to the display device of the present invention and the wireless communication device incorporating the display device, light unevenness when the display body is illuminated can be reduced. Moreover, the work efficiency at the time of attaching the circuit board on which the light source for illuminating the display body is mounted to the attachment member can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a front operation panel unit and its periphery of a wireless communication apparatus according to a first embodiment of the present invention.
2 is an exploded perspective view of a front operation panel unit in the wireless communication device of FIG. 1; FIG.
3 is an exploded perspective view of a display unit assembly used in the wireless communication device of FIG. 1, as viewed from the direction of arrow A in FIG.
4 is a side view of a mounting bracket used in the wireless communication device of FIG. 1, as viewed from the direction of arrow A in FIG.
5 is a perspective view of a light guide used in the wireless communication device of FIG. 1 as viewed from the bottom of FIG. 3;
6 is a partial exploded perspective view for explaining a positional relationship among a light guide, an LCD display body, and an interconnector used in the wireless communication device of FIG. 1;
7 is a partial enlarged view of an LCD illumination LED portion used in the wireless communication device of FIG. 1; FIG.
8 is a diagram showing a state when the circuit board used in the wireless communication device of FIG. 1 is attached to the mounting bracket, and (A) shows a state when the circuit board is inserted into the engagement hole; B) is a diagram showing a state when the circuit board is fixed to the mounting bracket.
9 is a partial front view of the front operation panel portion of the wireless communication device of FIG. 1, for explaining the positional relationship of the LCD illumination LEDs. FIG.
FIG. 10 is an exploded perspective view of a display unit assembly serving as a display according to a second embodiment of the present invention.
11 is a bottom view of the light guide in the display unit assembly of FIG. 10;
12 is a cross-sectional view taken along each cross-sectional line in FIG. 11, (A) is a cross-sectional view taken along the line AA in FIG. 11, (B) is a cross-sectional view taken along the line BB in FIG. It is CC sectional view taken on the line of FIG.
13 is a cross-sectional view of a packing in the display unit assembly of FIG.
FIG. 14 is an exploded perspective view of a conventional display device.
FIG. 15 is a partial front view when the display of FIG. 14 is incorporated in the front operation panel of the wireless communication device.
[Explanation of symbols]
1 wireless communication device
2 Front operation panel
11 Display panel
21 Operation panel
22 buttons
23 Display unit assembly
31 Mounting bracket (Mounting member)
31a engagement hole
32 Light guide
33 LCD display (display)
34 Interconnector
36 Circuit board
36a Engaging protrusion
37 LCD illumination LED (light source for display illumination)
40 display units
51a-51d wall
52 Front plane part (also serves as a frame part)
54 opening

Claims (8)

A circuit board having an engagement protrusion and a light source for illuminating a display body, a front plane having an engagement hole into which the engagement protrusion enters the side wall, and the side wall standing upright includes a mounting member for incorporating the circuit board having an opening in the center of the section, and a display body disposed in and opposite to the opening between the mounting member and the circuit board, the engagement of the light source A display device characterized by being arranged in the engaging protrusion so as to be in the mating protrusion or over the engaging hole . 2. The display device according to claim 1, wherein the display body is an LCD display body, the light source is a light emitting diode, and the mounting member is a metal mounting bracket. The light source is an upper surface light emission type light source that illuminates a direction perpendicular to the surface of the circuit board, and a plurality of the engagement protrusions are provided, and each of the engagement protrusions has one upper light emission type light source. The display device according to claim 1, wherein the display device is mounted. 2. A frame portion surrounding the opening is provided in the mounting member, and the light source is arranged so that the light source for illuminating the display body is covered by the frame portion when viewed from the front. The display according to 2 or 3. A rubber interconnector that contacts the contact terminal portion of the display body is disposed on the side opposite to the side on which the engagement protrusion is installed, and the contact with the connection terminal portion provided on the surface of the circuit board. 5. The display device according to claim 1, wherein the interconnector is compressed and sandwiched between the terminal portion. The engaging projection portion on which the light source for illuminating the display body is mounted is provided in one half region with the center line of the circuit board as a boundary, and another light source for display is arranged in the other half region. The display device according to claim 1, wherein the display device is a display device. The other light source for display is a multi-color light emitting diode, and a preventing means for preventing light from leaking from one light source side to the other light source example is provided between the light source for illuminating the display body. The display according to claim 6. The display device according to any one of claims 1 to 7 is disposed in a front operation panel unit, a display body is disposed facing the display panel of the operation panel unit, and a transparent portion of the display panel is disposed. Is a wireless communication device characterized in that the light source for illuminating the display body does not appear.

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