Patent Publication Number: US-2011057053-A1

Title: Aroma diffuser

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. 2009-208315, filed on Sep. 9, 2009, the entire contents of which are incorporated herein by reference. 
     FIELD 
     Embodiments discussed herein are related to equipment to diffuse an aroma from a device such as a cellular phone. 
     BACKGROUND 
     A device, such as a cellular phone and a camera, given a function of diffusing an aroma is known. The function is achieved by including an aromatic. 
     Concerning the function of diffusing an aroma, it is known to place an aromatic in an antenna assembly structure and emit an aroma from an aroma emitting port provided in the antenna assembly structure (for example, Japanese Laid-open Patent Publication No. 2002-76734). 
     It is also known to provide a space for placing an aromatic substance in a portable terminal device and emit the fragrance from the aromatic substance placed in the space for placing an aromatic substance (for example, Japanese Laid-open Patent Publication No. 2004-254026). 
     SUMMARY 
     The aroma diffuser of the present disclosure includes a housing and a lid. The housing includes an accommodating part that accommodates at least an aromatic chip. The lid is attached to the housing detachably and closes the accommodating part. The aromatic chip is provided for the lid. 
     The object and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the claims. 
     It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, as claimed. 
     Other objects, features and advantages of the embodiments of the invention are more clearly understood by referring to the attached drawings and each of the embodiments. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  depicts an example of an aroma diffuser according to a first embodiment; 
         FIG. 2  depicts a cellular phone viewed from its back according to a second embodiment; 
         FIG. 3  is a perspective view of the cellular phone, a rear cover over which is removed. 
         FIG. 4  is a perspective view depicting the rear cover; 
         FIG. 5  is a perspective view depicting attachment and detachment of a battery pack; 
         FIG. 6  is a perspective view depicting an accommodating part of the rear cover; 
         FIG. 7  is a sectional view of  FIG. 6  along the line VII-VII; 
         FIG. 8  is a sectional view of  FIG. 6  along the line VIII-VIII; 
         FIG. 9  depicts the rear cover viewed from its back; 
         FIG. 10  is a perspective view depicting a fragrance cap; 
         FIG. 11  is a perspective view depicting the cap viewed from its back; 
         FIG. 12  is a perspective view depicting the cap viewed from its back without a fragrance chip; 
         FIG. 13  is a sectional view of  FIG. 12  along the line XIII-XIII; 
         FIG. 14  is a sectional view of  FIG. 12  along the line XIV-XIV; 
         FIG. 15  is a perspective view depicting the fragrance chip; 
         FIG. 16  is a sectional view of  FIG. 15  along the line XVI-XVI; 
         FIG. 17  is a sectional view of  FIG. 15  along the line XVII-XVII; 
         FIG. 18  is a sectional view of  FIG. 2  along the line XVIII-XVIII; 
         FIG. 19  is a sectional view of  FIG. 2  along the line XIX-XIX; 
         FIG. 20  is an enlarged sectional view of  FIG. 18  at the part holding the fragrance chip; 
         FIG. 21  is an enlarged sectional view of  FIG. 19  at the part holding the fragrance chip; 
         FIG. 22  depicts the cap being removed; 
         FIG. 23  depicts an example of impregnation of the fragrance chip with the fragrance; 
         FIG. 24  depicts another example of the impregnation of the fragrance chip with the fragrance; 
         FIG. 25  is a flowchart depicting a manufacturing process; 
         FIG. 26  depicts exchange of the rear cover; 
         FIG. 27  depicts washing of the chip; 
         FIG. 28  depicts washing of the chip on the cap; 
         FIG. 29  depicts a cellular phone viewed from its back according to a third embodiment; 
         FIG. 30  is a sectional view of  FIG. 29  along the line XXX-XXX; 
         FIG. 31  is a sectional view of  FIG. 29  along the line XXXI-XXXI; 
         FIG. 32  depicts an example of modification on the accommodating part; 
         FIG. 33  depicts another example of modification on the accommodating part; 
         FIG. 34  depicts a PC according to other embodiments; 
         FIG. 35  depicts exchange of a rear cover of the PC; and 
         FIG. 36  depicts a PDA according to the other embodiments. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     It causes restriction of exchange of an aroma to load a dedicated aromatic into a device, or to use a dedicated attachment for loading an aromatic. If the part storing an aromatic is sealed, there rises a problem that when an aroma is exchanged, an aroma before the exchange may not be removed sufficiently. 
     First Embodiment 
     A first embodiment will now be described with reference to  FIG. 1 .  FIG. 1  is a sectional view depicting an example of an aroma diffuser. A structure depicted in  FIG. 1  is an example, and thus the present invention is not limited to such a structure. 
     This aroma diffuser is an example. A housing may include an accommodating part that accommodates at least an aromatic chip, and a lid that closes the accommodating part may be attached to the housing detachably. The aromatic chip may be provided for the lid. 
     An aroma diffuser unit  2  is an example of the aroma diffuser of the present disclosure and is placed on a device  4  as depicted in  FIG. 1 . The device  4  is, for example, a portable terminal device such as a cellular phone and a digital camera. 
     A cover  8  and a main body  9  are provided for a housing  6  of the device  4 . A recess  12  is formed in the outer surface of the cover  8 . The recess  12  is an example of an accommodating part accommodating at least a fragrance chip (hereinafter “chip”)  14 . The chip  14  is an example of an aromatic chip and is made by a chip member impregnated with an aromatic. An aromatic may be any of a fragrance, perfume, eau de Cologne or toilet water. A deodorant may also be used. 
     In this case, a lid  16  is placed attachably and detachably over the recess  12 . The chip  14  is provided for the inner surface of the lid  16  attachably and detachably by being held by a plurality of holders  18  that are provided for the lid  16 . A single or a plurality of diffuser holes  20  are formed through the part holding the chip  14  on the lid  16 . 
     A case  22  accommodating a component  10  is formed in the main body  9 . The case  22  is formed within the main body  9  and is opened and closed by an inside cover  24  that is placed on the inner side of the cover  8 . The inside cover  24  is attached to the main body  9  openably and closably by a hinge  26 . A packing  28  is got intervening between the inside cover  24  and the case  22  and thus, waterproof construction of the case  22  is achieved. The hinge  26  is an example of an opening and closing mechanism for opening and closing the inside cover  24 . A screw which is a fixing means may be used for opening and closing (attaching and detaching) the inside cover  24 . 
     A convex  30  is provided for the inner surface of the cover  8 . The convex  30  contacts the inside cover  24 . That is, the cover  8  attached to the main body  9  causes the inside cover  24  to be pressed and thus the above described waterproof construction is maintained. In the embodiment, the convex  30  is formed for providing the recess  12  for the outer surface of the cover  8 . That is, the convex  30  and the recess  12  are both sides of the cover  8  as sandwiching the thick-wall part of the cover  8 . 
     According to such a structure, an aromatic such as a fragrance, with which the chip  14  is impregnated, is vaporized and diffused from the diffuser holes  20  on the lid  16 , and an aroma thereof can be wafted. 
     If the component  10  is a heat generating component such as a battery pack, the heat therefrom is transmitted from the inside cover  24  to the cover  8 . The transmitted heat is able to promote the vaporization of a fragrance. 
     Since the chip  14  is made by a chip member impregnated with a fragrance, washing of the chip member enables exchange with a different fragrance and thus enables a different aroma to be diffused. In this case, a desired aroma may be diffused by selecting a different aroma through exchange with the cover  8  of the other chip  14 , exchange with the lid  16  of the other chip  14  or exchange with the chip  14  impregnated with a different fragrance. 
     The chip  14  and the lid  16  are placed outside the cover  8  of the device  4 . There is no inconvenience that a fragrance penetrates the waterproof construction of the device  4  since the chip  14  is placed outside the waterproof construction of the device  4 , that is, outside a waterproof area. 
     Second Embodiment 
     A second embodiment will now be described with reference to  FIGS. 2 ,  3 ,  4  and  5 .  FIG. 2  depicts a cellular phone viewed from its back according to the second embodiment,  FIG. 3  is a perspective view of the cellular phone, a rear cover over which is removed,  FIG. 4  is a perspective view depicting the rear cover, and  FIG. 5  is a perspective view depicting attachment and detachment of a battery pack. Each structure depicted in  FIGS. 2 to 5  is an example, and thus the present invention is not limited to such structures. 
     This cellular phone is an example of an aroma diffuser (aroma diffuser unit  2 ). A housing may include an accommodating part that accommodates at least an aromatic chip and a lid that closes the accommodating part attachably and detachably. The aromatic chip may be held over the lid attachably and detachably. 
     A cellular phone  32  is an example of the aroma diffuser of the present disclosure. The cellular phone  32  is an example of a portable device which is carried, and has a first housing  34  and a second housing  36  as depicted in  FIGS. 2 ,  3  and  4 . These housing  34  and housing  36  are linked to each other by a hinge  38 , and thus foldable, or openable and closable. The housing  34  is a member corresponding to the above described main body  9  ( FIG. 1 ), and in the embodiment, is a housing of a keyboard which has a plurality of keys on its front side. The housing  36  is a housing of a display which has a display on its front side. 
     A rear cover  40  is attached to the back of the housing  34  detachably. The rear cover  40  is an example of a back member, is an opening and closing means of the housing  34  for attaching and detaching a battery pack  42  built into the housing  34  ( FIG. 5 ), and corresponds to the above described cover  8  ( FIG. 1 ). The rear cover  40  may be formed by synthetic resin or metal. A locking mechanism  44  is attached to the rear cover  40  for keeping its fixation locked after the housing  34  is fixed. 
     An engaging protrusion  46  for engaging the housing  34  to the rear cover  40  is formed in the housing  34 . An engaging recess  48  for engaging the rear cover  40  with the engaging protrusion  46  is formed in the rear cover  40 . The engaging protrusion  46  and the engaging recess  48  are meshed to be engaged with each other. As depicted in  FIG. 3 , insertion stopping parts  50  are formed at both sides of the engaging recess  48  as a pair of engaging means. An edge of the housing  34  is inserted into each of the insertion stopping parts  50  to be engaged. Such an engaging structure of the housing  34  and the rear cover  40  enables the rear cover  40  to be attached to the housing  34  detachably. A groove  52  is formed in the housing  34 . The groove  52  engages the above locking mechanism  44 . A pawl of the locking mechanism  44  is meshed with the groove  52 , and thus the engagement of the housing  34  and the rear cover  40  is held locked. Thereby, easy separation of the rear cover  40  from the housing  34  is prevented. 
     A fragrance accommodating part (hereinafter “accommodating part”)  54  is formed in the center of the outer surface of the rear cover  40 . The accommodating part  54  is closed by a fragrance cap (hereinafter “cap”)  56 . As depicted in  FIG. 4 , the cap  56  is openable and closable. That is, the accommodating part  54  is opened and closed by the cap  56 . The accommodating part  54  corresponds to the above described recess  12  ( FIG. 1 ), and forms space, which is able to accommodate at least a chip  14 , therein. The cap  56  is a member corresponding to the above described lid  16  ( FIG. 1 ). A single or a plurality of diffuser holes  58  are formed through the cap  56 . The diffuser holes  58  are means diffusing an aroma of the chip  14  that is accommodated by the accommodating part  54 . A gap  60  is formed between the accommodating part  54  and the cap  56 . The gap  60  is an example of a recess and is used for removing the cap  56  from the accommodating part  54 . The width d of the gap  60  may be a width through which a coin or a nail of a person can enter. 
     To the housing  34  having such rear cover  40 , a battery cover  62  is attached by a hinge  64  openably and closably in the interior of the rear cover  40  as depicted in  FIG. 5 . The battery cover  62  corresponds to the above described inside cover  24  ( FIG. 1 ). The battery cover  62  is a means opening and closing a battery case  66 , and is made by, for example, a metal plate. The battery case  66  is a means accommodating the battery pack  42 . A waterproof packing  68  is placed in the battery cover  62 . The waterproof packing  68  is annular and corresponds to a form of the edge of the battery case  66 . The waterproof packing  68  is a means sealing the battery cover  62  and the battery case  66 , and constitutes waterproof construction along with the battery cover  62  and the battery case  66 . 
     Backs of Fragrance Accommodating Part  54  and Rear Cover  40   
     Backs of the accommodating part  54  and the rear cover  40  will now be described with reference to  FIGS. 6 ,  7 ,  8  and  9 .  FIG. 6  is a perspective view depicting the accommodating part of the rear cover,  FIG. 7  is a sectional view of  FIG. 6  along the line VII-VII,  FIG. 8  is a sectional view of  FIG. 6  along the line VIII-VIII and  FIG. 9  depicts the rear cover viewed from its back. Each structure depicted in  FIGS. 6  to  9  is an example, and thus the present invention is not limited to such structures. In  FIGS. 6 to 9 , the same components as those in  FIGS. 2 to 5  are denoted by the same reference numerals. 
     A first and second engaging fixation parts  70  and  72  for attaching the cap  56  detachably and a supporting part  74  that supports the cap  56  are formed inside the accommodating part  54  as depicted in  FIGS. 6 ,  7  and  8 . Each of the engaging fixation parts  70  and  72  is, for example, a C-shape protruding from an inner wall surface (or a bottom face)  76  of the accommodating part  54 , and has a recess  78 . The recess  78  is, for example, a rectangular cylinder shape, and has a width “a” narrower than a lateral width of the accommodating part  54  W 1 , and a height “b”. In the embodiment, a longitudinal width of the accommodating part  54  L 1  is set wider than the lateral width W 1  (L 1 &gt;W 1 ). In this case, L 1  may be equal to W 1  or L 1  may be narrower than W 1 . 
     The supporting part  74  is a means protecting the rear cover  40  from falling in the direction of thickness, is formed in a direction crossing the engaging fixation parts  70  and  72 , and supports the cap  56  on the same or parallel face of the outer surface of the rear cover  40 . 
     A convex  80  is formed for forming the accommodating part  54  on the back of such rear cover  40  that has the accommodating part  54  as depicted in  FIG. 9 . A plurality of ribs  82  are formed on the back of the rear cover  40 . The ribs  82  reinforce the rear cover  40 . 
     Fragrance Cap  56   
     The cap  56  will now be described with reference to  FIGS. 10 ,  11 ,  12 ,  13  and  14 .  FIG. 10  is a perspective view depicting the cap,  FIG. 11  is a perspective view depicting the cap viewed from its back,  FIG. 12  is a perspective view depicting the cap viewed from its back without a fragrance chip,  FIG. 13  is a sectional view of  FIG. 12  along the line XIII-XIII, and  FIG. 14  is a sectional view of  FIG. 12  along the line XIV-XIV. Each structure depicted in  FIGS. 10 to 14  is an example, and thus the present invention is not limited to such structures. In  FIGS. 10 to 14 , the same components as those in  FIG. 2  are denoted by the same reference numerals. 
     The cap  56  is a closing means that closes the accommodating part  54  and also is a holding means for holding the chip  14 . The cap  56  maybe made by synthetic resin or metal as well as the rear cover  40 . If a lateral width of the cap  56  in the embodiment is W 2  and a longitudinal width thereof is L 2 , W 1  is wider than W 2  and L 1  is wider than L 2 +d (the gap  60 ) for the lateral width of the accommodating part  54  W 1  and the longitudinal width thereof L 1 . That is, a width of clearance between a shape or size of the accommodating part  54  ( FIG. 6 ) and that of the cap  56 , which is attached and detached ( FIG. 10 ), “w” (=W 1 −W 2 ) may be a width enough for the cap  56  to be attached to and detached from the accommodating part  54 . 
     An uneven face  84  is regularly or irregularly formed over the surface of the cap  56  as depicted in  FIG. 10 . Forming the uneven face  84  enables a surface area of the cap  56  to be enlarged. This enlargement contributes to raising a temperature of the chip  14  that is placed on the back of the cap  56  and enables diffusion of an aroma to be promoted. There is also a function that the uneven face  84  camouflages the diffuser holes  58 . In the embodiment, forming the uneven face  84  like a diamond pattern hides the diffuser holes  58  of lozenges. 
     A first and second chip fixation parts  86  and  88  and a first and second engaging protrusions  90  and  92  are provided on the back of the cap  56  as depicted in  FIGS. 11 ,  12 ,  13  and  14 . An engaging recess  95  is formed between each of the engaging protrusions  90  and  92 , and a main body  93  of the cap  56 . Each of the engaging recesses  95  is a means for engaging each engaging protrusion  97  ( FIG. 20 ) of the engaging fixation parts  70  and  72  of the accommodating part  54 . Engaging the engaging recess  95  and the engaging protrusion  97  makes the cap  56  attach to the accommodating part  54  detachably. 
     Each of the chip fixation parts  86  and  88  is an example of a means positioning and fixing the chip  14 , and is placed in the direction of the width of the chip  14 , that is, along a side of the chip  14 . Each of the chip fixation parts  86  and  88  has a pair of holders  96 A and  96 B which are formed therein and sandwich a standing wall  94 . Positioning protrusions  98  are formed from faces, which are opposite to each other, of the standing walls  94 , respectively. While one of the positioning protrusion  98  is from the holder  96 B, the other positioning protrusion  98  is from the holder  96 A. The positioning protrusions  98  are arranged so as to be reflection symmetry. Each of the holders  96 A and  96 B is an example of a holding means for the chip  14 . The holders  96 A and  96 B hold the chip  14  by sandwiching the chip  14  between the back of the cap  56  and themselves. 
     The engaging protrusion  90  is inserted into the recess  78  of the engaging fixation part  70  of the accommodating part  54  ( FIG. 20 ) to be fixed. The engaging protrusion  92  is inserted into the recess  78  of the engaging fixation part  72  of the accommodating part  54  ( FIG. 20 ) to be fixed. Each of the engaging protrusions  90  and  92  is placed at the position where the chip  14  is sandwiched in a direction crossing each of the chip fixation parts  86  and  88 . A plurality of supporting protrusions  100  are provided for the back of each of the engaging protrusions  90  and  92 . The supporting protrusions  100  support the chip  14 . 
     Protrusions  102  are formed on the back of the cap  56 . The protrusions  102  are adjacent to the holders  96 A and  96 B, which are formed on the left and right of the cap  56 , respectively, and avoid an area where the diffuser holes  58  are formed. A recess  103  is formed in the gap between each of the protrusions  102 . The recess  103  is set for an area where the diffuser holes  58  are formed. The protrusions  102  and the recess  103  are means for forming a space  105  ( FIGS. 20 and 21 ) between the chip  14  and cap  56 . The air that accumulates, or is convective, in the space  105  communicates with the diffuser holes  58 . 
     Fragrance Chip  14   
     The chip  14  will now be described with reference to  FIGS. 15 ,  16  and  17 .  FIG. 15  is a perspective view depicting the fragrance chip,  FIG. 16  is a sectional view of  FIG. 15  along the line XVI-XVI, and  FIG. 17  is a sectional view of  FIG. 15  along the line XVII-XVII. Each structure depicted in  FIGS. 15 to 17  is an example, and thus the present invention is not limited to such structures. 
     The chip  14  is made by impregnating a chip member  104  with a fragrance  106  ( FIG. 23  or  24 ) as depicted in  FIG. 15 . The chip member  104  is a rectangle having a lateral width W 3  and a longitudinal width L 3 . The lateral width W 3  is slightly narrower than a gap which the chip fixation parts  86  and  88  of the cap  56  are able to fix. The longitudinal width L 3  is slightly narrower than a gap which the engaging protrusions  90  and  92  of the cap  56  are able to support. 
     A fixation edge  108  and a positioning part  110  are provided for each edge of the chip  14  in a width direction. Each of the fixation edges  108  is inserted into each of the recess  111  ( FIGS. 13 ,  14  and  21 ) of the holders  96 A and  96 B of the chip fixation parts  86  and  88  of the cap  56  to be held, and the chip  14  is fixed to the cap  56 . Each of the fixation edges  108  is made by an edge side of the chip member  104  being thinned, and has a trapezoidal section. 
     The positioning parts  110  are positioning means that position the chip  14  at a predetermined position of the cap  56  by engaging themselves with the positioning protrusions  98  of the cap  56 . In the embodiment, the positioning parts  110  are constructed by U-shaped notches that are cut out of the fixation edges  108  toward flat surfaces  114 . 
     An uneven face  116  is formed between the flat surfaces  114 , on the surface of the chip member  104 . In the embodiment, tips  118  of a quadrilateral pyramid is arranged in a plurality of rows and columns as depicted in  FIGS. 16 and 17 . A V-shaped recess  120  is formed at each edge of the tip  118 . Providing such uneven face  116  leads to a larger surface area of the chip  14  than an area determined by the lateral width W 3 ×the longitudinal width L 3 . Enlarging the surface area like the above enlarges an area of the chip  14  touching the air. Thereby, diffusion of the fragrance  106  in the air is promoted. 
     Part for Accommodating Fragrance Chip, Attachment and Detachment of Cap and Impregnation of Fragrance 
     A sectional area of the part for accommodating the fragrance chip will now be described with reference to  FIGS. 18 ,  19 ,  20 ,  21 ,  22 ,  23  and  24 .  FIG. 18  is a sectional view of  FIG. 2  along the line XVIII-XVIII,  FIG. 19  is a sectional view of  FIG. 2  along the line XIX-XIX,  FIG. 20  is an enlarged sectional view of  FIG. 18  at the part holding the fragrance chip,  FIG. 21  is an enlarged sectional view of  FIG. 19  at the part holding the fragrance chip,  FIG. 22  depicts the cap being removed,  FIG. 23  depicts an example of impregnation of the fragrance, and  FIG. 24  depicts another example of the impregnation of the fragrance. Each structure depicted in  FIGS. 18 to 24  is an example, and thus the present invention is not limited to such structures. 
     The rear cover  40  having the above described chip  14  is placed on the housing  34  of the cellular phone  32  as depicted in  FIGS. 18 and 19 . The chip  14  is held by the cap  56  that is placed over the accommodating part  54  of the rear cover  40  as depicted in  FIGS. 20 and 21 . The cap  56  is fixed by inserting the engaging protrusion  90  into the recess  78  of the engaging fixation part  70  and by inserting the engaging protrusion  92  into the recess  78  of the engaging fixation part  72 . In this case, each of the engaging protrusions  97  at the accommodating part  54  is inserted into the engaging recess  95  at the cap  56 . Around such engaging protrusion  90 , fixation is achieved by a plurality of meshing engagements of the engaging protrusion  90  with the recess  78  of the engaging fixation part  70  and the engaging protrusion  97  with the engaging recess  95 . Around the engaging protrusion  92 , fixation is achieved by a plurality of meshing engagements of the engaging protrusion  92  with the recess  78  of the engaging fixation part  72  and the engaging protrusion  97  with the engaging recess  95 . Through such a plurality of engagements, the cap  56  is attachable to and detachable from the accommodating part  54  and is fixed firmly to seal the opening of the accommodating part  54 . The chip  14  is held by the cap  56 . Thus, if the chip  14  is impregnated with the fragrance  106 , the fragrance  106  is diffused from the diffuser holes  56  and an aroma therefrom can be smelled. 
     In the embodiment, when the cap  56  is placed over the accommodating part  54 , a space  107  is secured between the chip  14  on the cap  56  and the inner wall surface  76  of the accommodating part  54  as depicted in  FIGS. 20 and 21 . The space  107  may be formed by forming the accommodating part  54  deep so that there appears clearance between the chip  14  and the inner wall surface  76 . The air is convective or accumulates in the space  107 . The air touches the chip  14  enough to promote diffusing an aroma of the fragrance  106  from the chip  14  by volatilization of alcohol. 
     Since the battery pack  42  is placed on the back of the accommodating part  54 , that is, the back of the convex  80  via the battery cover  62 , generated heat from the battery pack  42  can be got acting on the chip  14 . That is, the convex  80  that protrudes over the back of the accommodating part  54  adheres to the battery pack  62 , and the heat of the battery pack  42  is conducted to the convex  80  via the battery cover  62 . If the battery cover  62  is a metal plate, good heat conductivity is achieved, and then the heat of the battery pack  42  can be got acting on the chip  14  efficiently. Consequently, heating the chip  14  promotes vaporization of alcohol included in the fragrance  106 . Diffusion of the fragrance  106  is also promoted as well as the vaporization. 
     Even if the chip  14  is impregnated with the fragrance  106 , the housing  34  is not impregnated with the fragrance  106 . That is, penetration with the fragrance  106  is suppressed because waterproof construction of the battery cover  62  and that of the housing  34  by the packing  109  of the battery case  66  ( FIG. 19 ) are provided. Moreover, the fragrance  106  does not act on the battery pack  42 . 
     When the diffusion of the fragrance  106  is ended, supplement of the fragrance  106  or exchange with the chip  14  may be executed. To remove the cap  56  from the cellular phone  32 , the cap  56  may be pulled up from the rear cover  40  by inserting a fingertip or a coin into the gap  60  as depicted in  FIG. 22 . Thereby, the chip  14  is removable along with the cap  56 . 
     The fragrance  106  that is the same as the fragrance  106  used up already can be supplemented since the chip  14  is held by the cap  56 . In this case, the fragrance  106  may be dropped down onto the chip  14  from a container  122  of the fragrance  106  and the chip  14  is impregnated as depicted in  FIG. 23 , or the fragrance  106  may be sprayed from an atomizer  123  and the chip  14  is impregnated as depicted in  FIG. 24 . 
     To attach the cap  56  including the chip  14  where the fragrance  106  is supplemented, as depicted in  FIG. 22 , the cap  56  may be inserted and put onto the edge opposite to the gap  60  of the accommodating part  54 , and may be pressed in the direction opposite to pulling up. 
     Method of Manufacturing Cellular Phone  32   
     A method of manufacturing the cellular phone will now be described with reference to  FIG. 25 .  FIG. 25  is a flowchart depicting a process of manufacturing the cellular phone. A structure depicted in  FIG. 25  is an example, and thus the present invention is not limited to such a structure. 
     Processing procedure of the manufacturing method is an example of a method of manufacturing the aroma diffuser of the present disclosure. The processing procedure includes a process of forming the rear cover (step S 11 ), a process of forming the cap (step S 12 ), a process of forming the chip (step S 13 ) and a process of attaching the cap where the chip is attached (step S 14 ) as depicted in  FIG. 25 . 
     a) Process of Forming Rear Cover (Step S 11 ) 
     The rear cover  40  that fits the housing  34  of the cellular phone  32 , which is an example of a device for diffusing a fragrance, is formed (step S 11 ). The above described accommodating part  54  is formed in the rear cover  40 . Such rear cover  40  including the accommodating part  54  is waterproof. The rear cover  40  may be formed in the above described form by being molded from synthetic resin or a metal plate which has resistance to the fragrance  106  (fragrance resistance). Waterproof is effective when the rear cover  40  is washed by water. 
     Effects from alcohol included in the fragrance  106  is avoidable if crystalline nylon or PP (polypropylene) of corrosion resistance is adopted as the rear cover  40 . 
     b) Process of Forming Cap (Step S 12 ) 
     Since the cap  56  is a closing means of the accommodating part  54  of the rear cover  40  and also is a fixing and holding means for the chip  14 , a structure thereof is as described above. The cap  56  including such a structure is waterproof and may be formed by being molded from synthetic resin or a metal plate which has resistance to the fragrance  106  as well as the rear cover  40 . Waterproof is effective when the cap  56  is washed by water. 
     Effects from alcohol included in the fragrance  106  is also avoidable if crystalline nylon or PP (polypropylene) of corrosion resistance is adopted as the cap  56 . 
     c) Process of Forming Chip (Step S 13 ) 
     Since the chip  14  is an impregnating means of the fragrance  106 , the chip  14  may preferably have resistance to the fragrance  106  and a function of holding the fragrance  106 . Porous ceramics may be used as a porous material for the chip member  104 . Zirconia may be used as porous ceramics. 
     d) Process of Attaching Cap where Chip is Attached (Step S 14 ) 
     Since the cap  56  has the above structure, the chip  14  is attachable easily. The cap  56  having the chip  14  may be attached to the accommodating part  54  of the rear cover  40 , and the rear cover  40  may be placed over the housing  34  of the cellular phone  32 . Thereby, the cellular phone  32  that is able to diffuse the fragrance  106  is obtained. 
     Exchange of Rear Cover  40 , Cap  56 , Fragrance Chip  14  or Fragrance  106   
     Exchange of the fragrance chip will now be described with reference to  FIGS. 26 ,  27  and  28 .  FIG. 26  depicts exchange of the rear cover,  FIG. 27  depicts washing of the chip, and  FIG. 28  depicts washing of the chip on the cap. Each structure depicted in  FIGS. 26 to 28  is an example, and thus the present invention is not limited to such structures. 
     In the cellular phone  32 , a rear cover  400  where the chip  14  is not mounted is prepared for the rear cover  40  where the chip  14  is mounted. The rear cover  400  is the former cover member, and a structure thereof is the same as the rear cover  40  excluding that the rear cover  40  has the accommodating part  54  and the cap  56 . According to such a structure, the rear cover  40  and the rear cover  400  are exchangeable in accordance with the preference of a user or a situation in a user as to the cellular phone  32 , and both of the covers are usable selectively. 
     In the cellular phone  32 , a different aroma is selectable by any of exchange with the rear cover  40  of the other fragrance  106 , exchange with the cap  56  of the other fragrance  106  and exchange with the chip  14  of the other fragrance  106 . 
     If the chip  14  is washed by tap water  124  as depicted in  FIG. 27 , the chip  14  can be impregnated with the fragrance  106  of a different aroma as depicted in  FIG. 23  or  24 . The chip  14  may be washed by the tap water  124  while the chip  14  is being held by the cap  56  as depicted in  FIG. 28 . Dedicated water may be used for washing the chip  14 . 
     The features, advantages or modification of the above second embodiment will be listed. 
     (1) A portable device such as the cellular phone  32  including a fragrance function is to be realizable. 
     (2) Sprinkling the chip  14  with a fragrance (for example, a perfume) enables a portable device to be given an aroma of a preference. 
     (3) Since the chip  14  is impregnated with the fragrance  106 , there is no need to load a dedicated aromatic or aromatic to a dedicated attachment, and an aroma is exchangeable without any restriction. When an aroma is exchanged, an aroma before the exchange is easily removable by washing. Thereby, the reliability of a device does not decrease. 
     (4) If a material of waterproof and fragrance (alcohol) resistance is selected for the battery cover  62  in addition to waterproof construction of the housing  34 , impregnation of the housing  34  with the fragrance  106  can be prevented. 
     (5) If a porous chip material made by porous ceramics that is able to hold ingredients of the fragrance  106  for a long time is placed, the chip  14  is impregnated with the fragrance  106  by sprinkling the fragrance  106 , and an aroma therefrom can be maintained. 
     (6) Marketed products are usable for the fragrance  106 . Thus, an aroma which a user prefers is easily selectable and realizable. 
     (7) Since the chip  14  is placed on the back of the cap  56 , the chip  14  is removable easily only by opening the cap  56 . There is no inconvenience that a fragrance erroneously adheres to a device since the fragrance  106  is sprinkled with the cap  56  removed. 
     (8) While ABS resin is usable as to a material of corrosion resistance that surrounds the chip  14  impregnated with the fragrance  106 , effects from a fragrance and alcohol is avoidable if a material of crystalline nylon or PP of larger corrosion resistance is adopted. 
     (9) Since the diffuser holes (aroma holes)  58  are provided for the cap  56 , the fragrance  106  can be diffused from the diffuser holes  58 , and thus, a sufficient fragrance effect can be exercised. 
     (10) Since the chip  14  is placed over the battery pack  42 , the heat generated from the battery pack  42  is got acting on the chip  14  to be able to promote volatilization of the fragrance  106  much more. A heat generating component may be a component generating heat such as an LCD (Liquid Crystal Display) device except the battery pack  42 . 
     (11) In the above cellular phone  32 , waterproof capability is provided for the housing  34 . In a portable device having such a waterproof function, the device can be prevented from being impregnated with the fragrance  106  by a waterproof effect if the chip  14  is placed outside a waterproof area. That is, a function of the device and the reliability thereof are not decreased. 
     Third Embodiment 
     A third embodiment will now be described with reference to  FIGS. 29 ,  30  and  31 .  FIG. 29  depicts a cellular phone viewed from its back according to a third embodiment,  FIG. 30  is a sectional view of  FIG. 29  along the line XXX-XXX, and  FIG. 31  is a sectional view of  FIG. 29  along the line XXXI-XXXI. Each structure depicted in  FIGS. 29 to 31  is an example, and thus the present invention is not limited to such structures. 
     While the second embodiment is that the cap  56  may be placed inside the face of the rear cover  40 , the third embodiment is that the cap  56  may project outside the face of the rear cover  40 . 
     In a cellular phone  33 , the cap  56  projects outside the face of the rear cover  40  as depicted in  FIG. 29 . In such a structure, the rear cover  40  can be placed so as to adhere to a housing  34  while the cap  56  projects outside the face of the rear cover  40  as depicted in  FIGS. 30 and 31 . Thus, the housing  34  including the rear cover  40  of the cellular phone  33  is able to achieve thinning down while the housing  34  is constructed as well as the second embodiment. 
     As the above, projecting the cap  56  eases attachment and detachment of the chip  14  along with the cap  56  from and to the rear cover  40 . If the thickness of the edge around the cap  56  is thinned down like taper, extreme projection of the cap  56  from the rear cover  40  does not occur. 
     Other Embodiments 
     (1) In the second embodiment, the inner wall surface  76  of the accommodating part  54  is formed in a flat face. In the accommodating part  54 , a wall  130  that has the same height as the inner wall surface  76  may be formed along with recesses  132  and  134  as depicted in  FIG. 32 . Providing such wall  130  enables the space  107  to be secured by the recesses  132  and  134  without weakening the strength of the accommodating part  54 . Such space  107  by the recesses  132  and  134  multiplies the air touching the chip  14 , prompts diffusion of an aroma from the chip  14  and thus, is able to contribute to promotion thereof. 
     (2) Instead of the above described wall  130  and the recesses  132  and  134  ( FIG. 32 ), ribs  136  and  138  may be formed across the accommodating part  54  as depicted in  FIG. 33 . Recesses  140 ,  142  and  144  may be formed by these ribs  136  and  138 , and the above described space  107  may be secured. Each of the ribs  136  and  138  is a reinforcing wall that reinforces the accommodating part  54 , and an example of a means securing the space  107 . According to such a structure, the effect equivalent to the above described (1) can also be obtained. 
     (3) In the above embodiments, the device  4  which the chip  14  is built in ( FIG. 1 ), the cellular phone  32  including the chip  14  ( FIGS. 2 to 28 ) and the cellular phone  33  ( FIGS. 29 ,  30  and  31 ) are exemplified. The aroma diffuser of the present disclosure is not limited to the above described embodiments. Such a device which the chip  14  is built in may be an electronic device such as a personal computer (PC)  200  ( FIGS. 34 and 35 ), a portable information terminal device (PDA: Personal Digital Assistant)  300  ( FIG. 36 ), a digital camera and an electronic video game device. 
     (4) The PC  200  includes a housing of a keyboard  202  and a housing of a display  204  as depicted in  FIG. 34 . These housings  202  and  204  are linked by a hinge  206 , and openable and closeable. The rear cover  40  is fixed to or placed attachably and detachably on the housing of a display  204 . The above described accommodating part  54  and the cap  56  are provided for the rear cover  40 . The chip  14  impregnated with a fragrance  106  is held by the cap  56 . According to such a structure, an aroma that the fragrance  106  has can be diffused from the PC  200 . 
     If the rear cover  40  of the PC  200  is attachable and detachable as depicted in  FIG. 35 , the fragrance  106  is selected by exchange with the rear cover  40 , exchange with the cap  56 , exchange with the chip  14  or exchange with the fragrance  106  to enable an aroma to be diffused. 
     (5) In the PDA  300 , the rear cover  40  is placed attachably and detachably on the back of a housing  302  as depicted in  FIG. 36 . The above described accommodating part  54  and the cap  56  are provided for the rear cover  40 . The chip  14  impregnated with the fragrance  106  is held by the cap  56 . According to such a structure, an aroma that the fragrance  106  has can be diffused from the PDA  300 . 
     In the PDA  300 , the fragrance  106  is also selected by exchange with the rear cover  40 , exchange with the cap  56 , exchange with the chip  14  or exchange with the fragrance  106  to enable an aroma to be diffused. 
     (6) In a video game device, an additional effect such as dramatizing a video game is enabled by an aroma of a fragrance or exchange of the aroma. 
     (7) A cellular phone and so on are exemplified as carried portable devices. The aroma diffuser of the present disclosure is not limited to portable devices, and may apply to an intercom, remote control, etc. 
     (8) While the fragrance chip  14  is exemplified as an aromatic chip in the above embodiments, a deodorant chip may be used. 
     All examples and conditional language recited herein are intended for pedagogical purposes to aid the reader in understanding the invention and the concepts contributed by the inventor to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions, nor does the organization of such examples in the specification relate to a showing of the superiority and inferiority of the invention. Although the embodiments of the present inventions have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention. 
     Technical ideas extracted from the embodiments of the present invention described above will then be listed. The technical ideas of the present invention may be comprehended at various levels and variations ranging from higher to lower conceptions and the present invention is not limited to the following description. 
     An aroma diffuser includes a housing to include an accommodating part that accommodates at least an aromatic chip, and a lid to be attached to the housing detachably and to close the accommodating part. The aromatic chip is provided for the lid. 
     In the above aroma diffuser, preferably, the housing may have a cover, and the lid may be attached to the cover detachably. 
     The above aroma diffuser may preferably include a holding part to be provided for the lid and to hold the aromatic chip attachably and detachably. 
     In the above aroma diffuser, preferably a space may be provided between the lid and the aromatic chip. 
     In the above aroma diffuser, preferably the cover may be placed outside a waterproof construction member of the housing. 
     In the above aroma diffuser, preferably the accommodating part accommodating the aromatic chip may be arranged in the vicinity of a heat generating member that is built in the housing. 
     In the above aroma diffuser, preferably the aromatic chip may include a main chip body and an aromatic or deodorant with which the main chip body is impregnated. 
     In the above aroma diffuser, preferably the lid may have a single or a plurality of diffuser holes that diffuse (s) an aroma. 
     In the above aroma diffuser, preferably the lid may have an engaging part engaging with the accommodating part of the housing, and may be detachably attached by the engaging part. 
     In the above aroma diffuser, preferably a recess may be provided between an outer edge of the lid and an inner edge of the accommodating part. The gap  60  ( FIG. 3 ) is an example thereof. 
     Following effects can be obtained according to the aroma diffuser of the present disclosure. 
     (1) A desired aroma can be diffused from a housing having an aromatic chip. 
     (2) An aroma is easily selectable by any of exchange of a lid including an aromatic chip, exchange of an aromatic chip on the lid or exchange of an aromatic of the aromatic chip. 
     While the embodiments of the aroma diffuser have been described hereinabove, the present invention is not limited to the above description, and it is a matter of course that various variations and modifications can be made by those skilled in the art based on the gist of the invention recited in the claims or disclosed in the embodiment, and needless to say, such variations and modifications are also encompassed in the scope of the present invention. 
     The aroma diffuser of the present disclosure is usable for an effect with an aroma, and is broadly used for a portable device such as a cellular phone and a fixed device. Thus, the aroma diffuser is useful.