JP2005274635A - Light lens holding structure for camera of mobile terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize a light lens holding structure for a camera, to make it easy to assemble the same, and to increase manufacturing efficiency and maintainability of the same. <P>SOLUTION: The light lens holding structure for a camera of a mobile terminal, which guides light from a luminous body 102 fixed to a circuit board 101 as light for the camera out of a case 105 for the camera, is provided with a reflector part 106b and a lens part 106a. The reflector part 106b has a reflector aperture part 106d surrounding the circumference of the luminous body, and a wall surface of the reflector aperture part is made of a light reflecting material. The lens part 106a guides light of the luminous body out of the case and is integrated with the reflector part and is inserted to and engaged with a case aperture part of the case. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a light lens holding structure for a camera of a mobile terminal device including a mobile phone. In particular, the present invention relates to a light lens holding structure for a camera of a mobile terminal device that has ease of assembly, production efficiency, and maintainability.

In order to simplify the description, an example of a mobile phone having a camera function will be described below.
FIG. 5 is an exploded perspective view showing a schematic main part of a light lens holding structure for a camera of a mobile phone as a premise of the present invention, and FIG. 6 is a cross-sectional view of the schematic main part of FIG. Note that the same components are denoted by the same reference numerals and symbols throughout the drawings.

As shown in FIGS. 5 and 6, a pin boss 105a and a case opening 105b are provided in a part of the case 105 of the mobile phone.
Further, a cellular phone having a camera function is provided with a lens 104 as a light lens for a camera, and the lens 104 has a lens opening 104a which is a fixing pin hole, and a light emitting window 104b of the lens.

The lens 104 is inserted into the case opening 105b of the case 105 of the mobile phone from the back side, and is fixed by fitting the pin boss 105a of the case 105 and the opening 104a of the lens 104.
The cellular phone is provided with a circuit board 101, and a light emitter 102 is mounted on the circuit board 101 as a camera light. Further, a reflector 103 is fixed, and the reflector 103 has an opening 103a at the center. Surround the surroundings.

The circuit board 101 is fixed to the case 105 by claw fitting, screw fastening, or the like, and a fixed gap is maintained between the case 105 and the circuit board 101 by the reflector 103 and the lens 104.
The reflector 103 is a light reflecting member necessary for obtaining high luminance light emission with low current consumption. Usually, a white molded product having a high reflectance is used, and a surface-deposited material is used for obtaining high luminance. The fixing structure of this component is affixed on the circuit board 101 and directly fixed to the light emitter 102.

However, there are some problems with the camera light lens holding structure of the conventional mobile phone shown in FIGS.
First, in the above-described conventional light lens holding structure for a camera of a mobile phone, the lens 104 needs at least an opening 104a and a lens emission window 104b with respect to a case opening 105b provided in a part of the case 105. Thus, there is a first problem that it is difficult to reduce the size of the lens portion of the mobile phone and restrict the design of the light emitting window of the lens portion of the mobile phone.

Next, since the light lens holding structure for a camera of the above-described conventional mobile phone needs to fix the reflector 103 and the lens 104 separately, the number of parts is increased, leading to variations between parts during assembly. There is a second problem that production efficiency is not good.
Next, in the above-described conventional light lens holding structure for a mobile phone camera, when the light emitter 102 is displaced with respect to the case 105, the fixed position of the reflector 103 is disposed with respect to the light emitter 102. There is a third problem that anxiety is given to the user due to an appearance defect called eccentric deviation between the lens 104 and the reflector 103.

Next, in the light lens holding structure for a camera of the above-described mobile phone, when the reflector 103 is replaced after the mobile phone is assembled due to foreign matter contamination or component abnormality, the case 105 is disassembled and the circuit board 101 is removed. Later, the reflector 103 is replaced, and there is a fourth problem that the maintainability is not good.
Conventionally, in a mobile phone equipped with an incoming lens that guides light from an incoming light emitter that alerts an incoming call to the outside of the housing, light leakage from the gap between the housing and the incoming lens is reduced and component size management is simplified In order to provide a portable communication device that improves assembly and improves the holding strength of the incoming lens, a flat portion formed on the housing is formed with a light transmitting portion, a collar portion, and a fitting spring portion on the incoming lens. There is a structure in which a collar portion is sandwiched between the LCD panel and a locking projection formed on the back surface of the LCD panel is inserted through the fitting spring portion (for example, see Patent Document 1).

However, Patent Document 1 relates to the light lens holding structure for a camera of a mobile phone, which is a premise of the present invention in that it includes an incoming lens that guides light from the incoming light emitter to the outside of the housing. The problem caused by the event of fixing the reflector 103 and the lens 104 separately, which is particularly pointed out in the light lens holding structure for a camera of a mobile phone, cannot be solved.
Another object of the present invention is to provide an illuminating device that can be used for any mobile phone without reducing the size and weight of the mobile phone and without sacrificing the design image and ensuring a sufficient lighting time. An illuminating device is composed of at least a tuning circuit composed of a coil and a diode that is tuned to a radio wave transmitted from a mobile phone, and an LED that is a light emitter that is lit by the output of the tuning circuit, and the illuminating device is an antenna of the mobile phone. Projecting at the tip of the rod, the LED of the lighting device is lit by the transmitted radio wave of the mobile phone transmitted by the transmission operation of the person holding the mobile phone, and is lit while the transmitted radio wave is being transmitted, Furthermore, some LEDs are lit even in received radio waves (see, for example, Patent Document 2).

However, in Patent Document 2, the light lens for a mobile phone camera, which is a premise of the present invention, is related to the light lens holding structure for a mobile phone camera which is a premise of the present invention in that the light emitter of the illumination device is provided. The problem caused by the event of fixing the reflector 103 and the lens 104 separately, particularly pointed out in the holding structure, cannot be solved.
Conventionally, in order to illuminate the surroundings with a portable electronic device such as a cellular phone, for example, an electric bulb protected by a cover and a reflecting mirror are attached to an end surface on the antenna side, and a battery and There is a light bulb that is connected to a light bulb to emit light and illuminate the front (see, for example, Patent Document 3).

The above-mentioned Patent Document 3 relates to a light lens holding structure for a camera of a mobile phone that is a premise of the present invention in that it includes a light bulb and a reflecting mirror, but is a light lens holding structure for a camera of a mobile phone that is a premise of the present invention. In particular, the problem caused by the event of fixing the reflector 103 and the lens 104 separately cannot be solved.
In addition, in order to provide a mobile phone in which a function module can be added to any model, in a mobile phone having a detachable battery cover, a function module for adding a new function to the mobile phone is used as the battery cover. equipped. When the mobile phone has a camera function, the battery cover can be a strobe module having a strobe. If the battery cover is replaced, another function module can be used (for example, see Patent Document 4). ).

Although the above-mentioned Patent Document 4 is related to the light lens holding structure for a camera of a mobile phone which is a premise of the present invention in that the mobile phone has a camera function and has a strobe, The problem caused by the event of fixing the reflector 103 and the lens 104 separately, which is particularly pointed out in the light lens holding structure for a camera, cannot be solved.
In addition, conventionally, in order to provide a beam light that hardly causes variations in light control, it is a beam light including a point light source such as a light emitting diode and a light control element formed of a transparent material such as a transparent resin. The light control element includes a recessed portion having a rear end opening formed substantially at the center thereof, the point light source is housed in the recessed portion, a convex lens is formed on the front surface of the recessed portion, and the point light source The forward light radiated from the front to the front is light-controlled by the convex lens so as to become substantially parallel light, and the outer periphery of the concave portion is connected to the outer periphery of the convex lens and obliquely forward from the peripheral edge of the rear end of the concave portion. A plurality of convex portions that are integrally formed with a reflecting surface that spreads toward and reflects the side light emitted from the point light source toward the front, and that protrudes outward from the front edge of the reflecting surface. Equipped with a light source It is preferable to fit and hold each of the plurality of recesses formed at the front end of the outer cylinder held on the inner periphery of the substrate, and to make the back surface of the reflective surface a mirror surface by attaching a metal vapor deposition film (for example, patents) Reference 5).

  However, Patent Document 5 relates to a light lens holding structure for a camera of a mobile phone that is a premise of the present invention in that it has a point light source such as a light emitting diode, a lens, and a reflective surface, and further includes a light control unit, a recess, Unlike the light lens holding structure for a camera of a mobile phone that is the premise of the present invention, the light lens holding for the camera of the mobile phone that is a premise of the present invention is different in that the lens and the reflecting surface are integrally formed via the convex portion. The problem caused by the event of fixing the reflector 103 and the lens 104 separately, particularly pointed out in the structure, cannot be solved.

  In addition, conventionally, by improving the positional accuracy between the lens barrel of the solid-state imaging device and the imaging device housing and attaching the solid-state imaging device to the imaging device housing with high accuracy in a small space, the image performance and the design are improved. In order to enable thinning of an imaging device, a solid-state imaging device includes a solid-state imaging device, a lens barrel that supports an imaging lens and an optical filter, and a substrate on which the solid-state imaging device and the lens barrel are fixed. Is inserted into the positioning part of the mobile phone case, the top surface of the main body of the lens barrel is brought into contact with the positioning part, and the pin is inserted into the positioning part of the mobile phone case, thereby Some are mounted (see, for example, Patent Document 6).

  However, although Patent Document 6 relates to a light lens holding structure for a camera of a mobile phone that is a premise of the present invention in that it includes a solid-state imaging device, it is a light lens holding structure for a camera of a mobile phone that is a premise of the present invention. In particular, the problem caused by the event of fixing the reflector 103 and the lens 104 separately cannot be solved.

JP 2000-196719 A JP 2002-261896 A JP 2002-232545 A JP 2003-338857 A JP 2003-263907 A Japanese Patent Laid-Open No. 2003-289891

  Therefore, in view of the above-mentioned problems, the present invention is a camera light for a mobile phone that is particularly easy to assemble, has production efficiency, and is easy to maintain by reducing the size of the lens unit and preventing the eccentricity between the lens and the reflector. It is an object to provide a lens holding structure.

  In order to solve the above problems, the present invention provides a light lens holding structure for a camera of a portable terminal device for guiding light from a light emitter fixed to a circuit board as a camera light to the outside of the case. A reflector opening that surrounds the periphery of the reflector, and a reflector part in which the wall surface of the reflector opening is formed of a light reflecting material, guides the light of the light emitter to the outside of the case, and is integrated with the reflector part, Provided is a light lens holding structure for a camera of a portable terminal device, comprising a lens portion that is inserted and fitted into a case opening of the case.

Further, the lens portion has a wedge-shaped collar portion on the entire circumference of the side wall, and the collar portion is engaged with and held by the fitting surface of the case when the case is inserted and fitted into the case opening.
Further, the collar portion is made larger than the case opening, and the outer shape of the lens portion is substantially the same as the case opening of the case.
Further, the size of the collar portion is adjusted to adjust the fitting force for engaging and holding the collar portion and the fitting surface of the case.
Further, the lens portion and the reflector portion are joined and integrated at the boundary surface by an insert molding method or a two-color injection molding method.

Furthermore, the wall surface of the reflector opening of the reflector portion is formed of a white material having a high reflectance as a light reflecting material.
Furthermore, metal vapor deposition is performed as a light reflecting material on the entire periphery of the wall surface of the reflector opening of the reflector.
Further, the lens part is formed of a light-transmitting transparent member.

Furthermore, a convex part is provided in the boundary surface with the lens part in the reflector part, a concave part is provided in the boundary surface with the reflector part in the lens part, and the convex part and the concave part are integrated by press fitting. .
Further, conductive rubber is bonded to the bottom surface of the small base on which the light emitter is mounted, the light emitter is built in the reflector portion, and the lens with the reflector is inserted and pushed into the case opening of the case. The flange portion of the lens portion is fitted and held on the fitting surface of the case, the conductive rubber is interposed between the circuit board and the light emitter, and the lens with reflector is fitted to the case At the time of holding, the crimping is completed and electrical connection is established.

As described above, according to the present invention, the reflector part and the lens part are integrated, and the fitting part is provided on the lens part, so that the two parts of the reflector part and the lens part can be inserted at a time from the outside of the case. It became so.
In addition, by integrating the reflector and lens, miniaturization of the lens, prevention of eccentric displacement between the lens and reflector, improved assembly, improved maintainability, improved production efficiency due to a reduction in the number of parts, and eccentric displacement of the reflector Prevention can be realized at the same time.

  Further, by arranging the collar portion of the lens portion around the entire circumference, it is possible to reliably prevent light leakage and prevent the lens portion from falling off.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In order to simplify the description, an example of a mobile phone will be described below.
FIG. 1 is an exploded perspective view showing a schematic main part of a light lens holding structure for a camera of a mobile phone according to the present invention.
As shown in this figure, compared with FIG. 5, in the light lens holding structure for a camera of a mobile phone, the circuit board 101 in which the light emitter 102 is connected by soldering or the like is nail-fitted to the case 105 of the mobile phone, It is fixed by screw fastening.

A lens 106 with a reflector is inserted into the case opening 105b of the case 105 of the cellular phone, and the lens 106a is provided in the lens 106 with a reflector. The lens 106a is formed of a light-transmitting transparent member, and is formed from the light emitter 102. The light is led out of the case 105 of the mobile phone.
Further, a collar portion 106c is provided on the lens portion 106a, and the collar portion 106c is used for fitting with the case 105. When the lens 106 with a reflector is inserted into the opening portion 105c of the case 105 of the mobile phone, It engages with and holds the fitting surface 105c.

More specifically, the collar portion 106c of the lens portion 106a has a wedge shape in cross section, and is provided around the entire side wall of the lens portion 106a so as to fit into the case opening 105b of the case 105.
The part required for fixing the lens 106 with the reflector is only the collar part 106c of the lens part 106a, does not require an extra area, adjusts the size of the collar part 106c, and is slightly smaller than the case opening 105b of the mobile phone. The outer shape of the lens portion 106a is made as large as the case opening portion 105b of the mobile phone.

That is, since it has a simple shape, it is possible to reduce the size of the lens unit 106a of the mobile phone, and further, there is no unnecessary opening in the lens unit 106a, thereby reducing the design restrictions of the lens light emission window. To do.
The lens portion 106 a is provided with a reflector portion 106 b on the light emitter 102 side, the reflector portion 106 b has a reflector opening portion 106 d surrounding the light emitter 102, and the wall surface of the reflector opening portion 106 d is light from the light emitter 102. Has a function of reflecting the light.

Further, the reflector portion 106b is joined to the boundary surface of the lens portion 106a by insert molding, a two-color injection molding method or the like in order to prevent poor appearance.
The wall surface of the reflector opening portion 106d of the reflector portion 106b is formed of a light reflecting material to reflect light from the light emitter 102, and is formed of, for example, a white material having a high reflectance.
In this way, since the lens 106 with the reflector is an integrated part of the lens portion 106a and the reflector portion 106b, the lens and the reflector can be fitted at once by fitting the lens 106 with the reflector from the outside of the case 105. become. That is, it becomes possible to assemble two parts of the lens part 106a and the reflector part 106b at a time with respect to the case 105, and the number of parts can be reduced. That is, assembly and production efficiency can be improved.

Further, since the lens 106 with the reflector is a component in which the lens portion 106a and the reflector portion 106b are integrated, there is no problem in appearance due to the eccentric deviation between the lens portion 106a and the reflector portion 106b as compared with the conventional case. For this reason, unlike the prior art, there is no longer anxiety to the user due to the appearance defect of eccentricity.
Furthermore, since the reflector portion 106b is held and fixed between the circuit board 101 and the lens portion 106a, the reflector-equipped lens 106 can be prevented from falling off inside the case 105.

  Furthermore, after the circuit board 101 is fixed in the case 105, the case 105 is disassembled as in the conventional case when the reflector unit 106b is replaced due to foreign matter mixing in the mobile phone or the occurrence of a component abnormality. If only the lens 106 with the reflector is removed without removing the circuit board 101, the reflector portion 106b can be easily replaced, thereby improving maintainability.

Further, when the lens with reflector 106 is fitted into the case opening 105b of the case 105, the lens 105 is assembled without a gap between the case 105 and the lens portion 106a, so that light leakage to the outside of the case 105 can be prevented. For this reason, it becomes possible to fix the lens 106 with a reflector to the case 105 reliably.
FIG. 2 is a cross-sectional view for explaining an example of a manufacturing method of a schematic main part having a light lens holding structure for a camera of the mobile phone in FIG.

As shown in this figure, the light emitter 102 is connected to the circuit by soldering or the like to the circuit board 101 so that light emission is possible.
The circuit board 101 is fixed to one of the cases 105 of the mobile phone so that there is no problem in using the mobile phone by claw fitting, screw fastening, or the like.
On the other hand, as a manufacturing method of the lens 106 with the reflector, the lens portion 106a is made of a light-transmitting transparent material, the reflector opening portion 106d of the reflector portion 106b surrounds the light emitter 102, and the wall surface of the reflector opening portion 106d. Is formed of a highly reflective white material having a function of reflecting light from the light emitter 102, and the lens portion 106a and the reflector portion 106b are integrally formed at the boundary surface by a two-color injection molding method or an insert molding method.

The lens 106a with the reflector is inserted into the case opening 105b from the outside of the case 105 of the mobile phone and pushed into the fitting surface 105c of the case 105 by the collar portion 106c of the lens 106 with the reflector until the lens portion 106a is engaged. And the reflector-equipped lens 106 can be assembled at a time.
Further, as described above, the portion required for fixing the reflector-equipped lens 106 is only the collar portion 106c. By adjusting the size of the collar portion 106c, the collar portion 106c and the case 105, which are necessary at the time of assembly, are provided. It is possible to adjust the fitting force that engages and holds the fitting surface 105c.

FIG. 3 is a first modification of FIG. 2 and is a cross-sectional view illustrating a manufacturing method of a schematic main part having a light lens holding structure for a camera of a mobile phone.
As shown in this figure, compared with FIG. 2, the reflector 106b is provided with a convex portion 106f on the boundary surface with the lens portion 106a, and the lens portion 106a has a concave portion 106e on the boundary surface with the reflector portion 106b. The convex portion 106f of the reflector portion 106b and the concave portion 106e of the lens portion 106a are press-fitted to each other, and the lens portion 106a and the reflector portion 106b are integrally formed.

The structure is the same as the structure shown in FIG. 1 except for the fixing method of the lens part 106a and the reflector part 106b.
In addition, you may make it vapor-deposit metal to the perimeter of the wall surface of the reflector opening part 106d of the reflector part 106b. In this way, a high-intensity strobe can be realized with a high reflectance.

FIG. 4 is a second modification of FIG. 2 and is a cross-sectional view illustrating a manufacturing method of a schematic main part having a light lens holding structure for a camera of a mobile phone.
As shown in this figure, compared to FIG. 2, the light emitter 102 is mounted on the small base 106g, the conductive rubber 106h is bonded to the bottom surface of the small base 106g, and the light emitter 102 is built in the reflector 106b. The light emitter 102 is also integrated with the lens 106 with a reflector.

  That is, when the lens 106 with reflector is inserted and pushed into the case opening 105b of the case 105 and the collar portion 106c of the lens portion 106a is fitted and held on the fitting surface 105c of the case 105, the circuit board 101 and the light emitter 102 are obtained. The conductive rubber 106h is interposed between the two, and when the lens 106 with the reflector is fitted and held in the case 105, the pressure bonding is completed and a conductive mechanism is established.

  Due to the repulsion of the conductive rubber 106h, the lens 106 with the reflector 106 is held more securely and firmly with respect to the case 105, and a sealed space is formed between the light emitter 102 and the lens 106 with the reflector, so that a structure effective for avoiding foreign matter contamination is obtained. Furthermore, it becomes possible to improve maintainability.

  In the above description, the application of the present invention has been described for a mobile phone. However, a mobile terminal device including a PHS (Personal Handyphone System) and a PDA (Personal Digital Assistant), and a device having a camera light lens can be applied. It is.

It is a disassembled perspective view which shows the schematic principal part of the light lens holding structure for the cameras of the mobile telephone which concerns on this invention. It is sectional drawing explaining the example of a manufacturing method of the schematic principal part which has the light lens holding structure for cameras of the mobile telephone in FIG. FIG. 11 is a cross-sectional view illustrating a manufacturing method of a schematic main part having a light lens holding structure for a camera of a mobile phone, which is a first modification of FIG. 2. FIG. 10 is a cross-sectional view illustrating a manufacturing method of a schematic main part having a light lens holding structure for a camera of a mobile phone, which is a second modification of FIG. 2. It is a disassembled perspective view which shows the general | schematic principal part of the light lens holding structure for cameras of the mobile telephone used as the premise of this invention. FIG. 6 is a sectional view of a schematic main part of FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 ... Circuit board | substrate 102 ... Light-emitting body 105 ... Case 105b ... Case opening part 105c ... Fitting surface 106 ... Lens 106a with a reflector ... Lens part 106b ... Reflector part 106c ... Collar part 106d ... Reflector opening part 106e ... Concave part 106f ... Convex part 106g ... small base 106h ... conductive rubber

Claims (10)

In a light lens holding structure for a camera of a mobile terminal device for guiding light from a light emitter fixed to a circuit board as a camera light to the outside of the case,
A reflector opening that surrounds the periphery of the light emitter, and a reflector portion in which a wall surface of the reflector opening is formed of a light reflecting material;
A light lens holder for a camera of a portable terminal device, comprising: a lens portion that guides light from the light emitter to the outside of the case, is integrated with the reflector portion, and is inserted and fitted into a case opening of the case. Construction. The lens part has a wedge-shaped collar part on the entire periphery of the side wall, and the collar part is engaged with and held by the fitting surface of the case when the case is inserted and fitted into the case opening. The light lens holding structure for a camera of the mobile terminal device according to claim 1. 3. The camera for a mobile terminal device according to claim 2, wherein the collar portion is larger than the case opening portion, and the outer shape of the lens portion is substantially the same as the case opening portion of the case. Light lens holding structure. The camera light of the mobile terminal device according to claim 1, wherein a fitting force for engaging and holding the collar portion with the fitting surface of the case is adjusted by adjusting a size of the collar portion. Lens holding structure. 2. The light lens holding for a camera of a mobile terminal device according to claim 1, wherein the lens part and the reflector part are joined and integrated at an interface by an insert molding method or a two-color injection molding method. Construction. 2. The light lens holding structure for a camera of a mobile terminal device according to claim 1, wherein a wall surface of the reflector opening portion of the reflector portion is formed of a white material having a high reflectance as a light reflecting material. The light lens holding structure for a camera of a mobile terminal device according to claim 1, wherein metal deposition is performed as a light reflecting material around the entire wall surface of the reflector opening of the reflector. 2. The light lens holding structure for a camera of a portable terminal device according to claim 1, wherein the lens portion is formed of a light-transmitting transparent member. Providing a convex portion at the boundary surface with the lens portion at the reflector portion, providing a concave portion at the boundary surface with the reflector portion at the lens portion, and integrating the convex portion and the concave portion by press fitting. 2. The light lens holding structure for a camera of a portable terminal device according to claim 1, wherein Conductive rubber is bonded to the bottom surface of the small base on which the light emitter is mounted, the light emitter is built in the reflector portion, and the lens with the reflector is inserted and pushed into the case opening of the case, The collar portion of the lens portion is fitted and held on the fitting surface of the case, the conductive rubber is interposed between the circuit board and the light emitter, and the lens with reflector is fitted and held in the case. 2. The light lens holding structure for a camera of a portable terminal device according to claim 1, wherein the crimping is completed and the electrical connection is established at the time.

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