CN1162722A - Lighting device for microwave oven - Google Patents
Lighting device for microwave oven Download PDFInfo
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- CN1162722A CN1162722A CN 97101293 CN97101293A CN1162722A CN 1162722 A CN1162722 A CN 1162722A CN 97101293 CN97101293 CN 97101293 CN 97101293 A CN97101293 A CN 97101293A CN 1162722 A CN1162722 A CN 1162722A
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- lighting device
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Abstract
The present invention relates to a lighting device for a microwave oven, which including a hole formed on the upper surface of the cooking chamber and a lamp for illuminating the cooking chamber through the hole. The above lamp includes a filament and a bulb, and the filament is located 2mm above the upper surface. The hole, which is less than 19mm in diameter, is formed 2/14 of the upper surface's depth from the front of the upper surface. The upper surface includes a beveled portion that slopes downward towards the front of the microwave oven on which the hole is formed. The lamp is provided to the hole so as to face the rear of the cooking chamber and is covered by a protective glass protruding into the cooking chamber.
Description
The present invention relates generally to a kind of lighting device for microwave oven.More particularly relate to a kind of lighting device that is installed in cooking chamber for microwave oven top, thus cooking room is strengthened illumination.
Micro-wave oven utilize by magnetron produce about 2, the heating using microwave food of 450MHz, this microwave is launched in the cooking room that fills food.The polar molecule of food is aimed at the opposite polarity microwave electric charge with it.Thereby the vibration of the high speed of microwave causes food molecule and collides the generation heat mutually with heat food.Recently, a kind of electrons heat method is introduced into micro-wave oven, utilizes radiant heat to finish gastronomical process.
Fig. 7 has drawn as the Japanese utility model application number profile perspective for disclosed a kind of conventional microwave oven in the application of flat 6-59707.It comprises that 3, one groups of magnetrons that 1, one of cooking room that a cooking food uses produces the cooking food microwave are formed at the hole on cooking room 1 top and are installed in lamp 13 on the hole 12, and this lamp throws light on to cooking room by the hole.The illumination of 13 pairs of cooking rooms of lamp is directly proportional with the size in hole 12.But their size is subjected to leaking by hole 12 restriction of the possibility of microwave.And the height of lamp 13 on cooking room 1 further reduced the illumination in the chamber.Like this, can not illuminate cooking room 1 fully, thereby hinder the user to monitor the ability of the progress of gastronomical process effectively.
The present invention is a kind of lighting device that is used for micro-wave oven, and it can avoid the problems referred to above and the shortcoming of conventional art.
The purpose of this invention is to provide a kind of lighting device that is used for micro-wave oven, this device sends more light to the cooking room of micro-wave oven.
Further purpose of the present invention provides the correct position of a lighting device, so that this device produces maximum light efficiency in cooking room.
In order to realize these purposes, disclosed herein is a lighting device that is used for micro-wave oven, micro-wave oven comprises a cooking room, the microwave energy heat food that produces with the magnetic control oscillating tube in this chamber, this lighting device comprises the hole and the lamp that illuminates cooking room by the hole that are formed on the cooking room upper surface layer.
Above-mentioned lamp comprises a filament that is installed in 2mm place on the cooking room upper surface layer.The diameter in this hole is 14 to 19mm, and this hole is positioned at the center of upper surface sloping portion.The hole is 2/14 of the upper surface degree of depth to the distance of upper surface front.Lamp is arranged in the hole, and towards the rear wall of cooking room, the hole hides with the convex cover glass.
According to a second embodiment of the present invention, disclose the lighting device of above-mentioned micro-wave oven, this device comprises two holes that are formed on the cooking room upper surface at least, a lamp is set to illuminate cooking room in each hole.Every lamp sends the light of at least two kinds of colors, and this lamp comprises a filament that is arranged on upper surface and a bulb that puts in cooking room.
In the accompanying drawings:
Fig. 1 is the profile perspective that has the micro-wave oven of lighting device of the present invention;
Fig. 2 is the amplification profile of first most preferred embodiment of the present invention along the II-II line;
Fig. 3 is the decomposition diagram that is used for a lighting device of micro-wave oven according to the present invention;
Fig. 4 is the profile of the lighting device for microwave oven of second most preferred embodiment according to the present invention;
Fig. 5 is the profile of the lighting device for microwave oven of the 3rd most preferred embodiment according to the present invention;
Fig. 6 is the figure of the diverse location of expression specific most preferred embodiment mesopore of the present invention; And
Fig. 7 is the profile perspective of micro-wave oven that has a lighting device of prior art.
Describe most preferred embodiment of the present invention in detail below in conjunction with accompanying drawing.
At first, be used for a microwave oven structure of the present invention with reference to figure 1 description.
This micro-wave oven comprises 50 of import of a cooking room 20 and ON/OFF cooking room 20.Cooking room 20 is made of inner casing 11, and inner casing 11 is connected to shell 12, has formed the main body of micro-wave oven.A rotatable pallet that is driven by the motor (not shown) has been installed in the bottom of cooking room 20.
One electronic components cabinet 30 is arranged between inner casing 11 and the shell 12.This electronic components cabinet 30 comprises magnetron 31, and this magnetron provides power by high-tension transformer 32, launched microwave to cooking room 20 with the food in the cooking chamber 20.In the back of electronic building brick 30 are the fans 33 that are used for cooling off high-tension transformer 32.On the upper surface 21 of cooking room 20, lighting device 40 is set, to illuminate the inside of cooking room 20.
Front end at upper surface layer 21 is provided with a sloping portion 21a, and lighting device 40 is installed on the sloping portion.When overlooking, the back segment of sloping portion 21a is designed to have maximum positive pitch.It is last and vertical with the inclined plane towards cooking room 20 that lighting device 40 is arranged on sloping portion 21a.
Referring to figs. 2 and 3 the structure that will describe lighting device in detail.
Sloping portion 21a has hole 21b, and this hole is positioned at the center of sloping portion 21a, and the light of lighting device 40 passes this hole.This lighting device 40 is installed outside the 21b of hole, is connected with wiring board (not shown) in the electronic components cabinet 30 by an electric connector and make lighting device open and close.Lighting device 40 comprises that has a filament 41a, and the lamp 41 that a joint 41c and a bulb 41b are formed when connecting with the mains, is given filament 41a heating by this joint, this filament light-emitting.Lamp 41 is arranged on the lamp support 44, and lamp support 44 is fixed on the sloping portion 21a by rivet 45, and itself and sloping portion 21a and peripheral the maintenance are fitted tightly.In addition, each lamp support 44 is provided with a prerotation vane 44a who protrudes upward, and places the lampshade 43 of lamp 41 with the chucking the inside.This lampshade 43 is the box-shaped of bottom surface opening, and is provided with opening 43a on each limit of lampshade.Be provided with the first boss 44b on each prerotation vane 44a of lamp support 44, this boss inserts respectively among the opening 43a, and lampshade 43 is connected on the lamp support 44.Lamp 41 is fixed in the lampshade 43, and the low side of filament 41a stretches out the outside of sloping portion 21a.
One cover glass 42 is installed among the 21b of hole, reaches 20 li guard lamps 41 of cooking room, and makes lamp 41 waterproof, has so just prevented that lamp 41 from cutting off the power supply because of moist.This cover plate 42 also stops dust and dirt directly to stick on the lamp 41, thereby has prevented the infringement to lamp 41.In addition, the cover glass of being made by heat resistant glass 42 is suitable for the light diffusion of lamp 41.
This cover glass 42 comprises the flange 42a that is positioned at sloping portion 21a outer surface and by hole 21b, put in the bossing 42b of cooking room 20 from flange 42a.One taper reflecting part 46 is arranged on lampshade 43 inside makes it center on lamp 41, and this reflecting part reflexes to the light of lamp 41 in the cooking room 20.The low side of this reflecting part 46 contacts with this cover glass 42, and its upper end links with the inner surface of lamp 41.The second boss 43b is arranged on the inner edge of lampshade 43, and the upper end of reflecting part 46 is installed in the lampshade.
Figure 4 and 5 have been described the lighting device for microwave oven of the present invention's second most preferred embodiment.
One group of hole 21b ' and 21b " are formed among the sloping portion 21a, a lamp 41 are set in each hole at least.In lamp 41, the low side of filament 41a ' is positioned at the outside of sloping portion 21a, and the low side of bulb 41b ' puts in the cooking room 20.Have one a group of block protection glass 42 ' protection bulb and lampshade 43 with hole 21b ' and 21b " corresponding bossing 42b ' and 42b ", and hide whole lamp 41.
Fig. 4 represents a kind of lighting device, and wherein, each hole 21b ', 21b " are equipped with lamp 41; Fig. 5 represents another kind of lighting device, and wherein, two lamps 41 are arranged among the hole 21b ', and a lamp 41 is arranged on another hole 21b " in.In Fig. 5, two lamps 41 of hole 21b ' send white light, hole 21b " a lamp 41 send ruddiness.Dividing plate 47 so just provides double-colored illumination capability between these lamps 41.
Operation of the present invention is described below.
Begin the cooking in case the user presses the starting button (not shown), magnetron 31 just sends the microwave of cooking food in cooking room.Fan 33 utilizes extraneous air cooling high-tension transformer 32 and magnetron 31.
In order to prevent the leakage of high-frequency microwave, the size of limiting holes 21b ', this has more detailed description in table 1-1.Table 1-1 represents the relation (numerical value of showing among the 1-1 is result of experiment) between the life-span of diameter (φ), microwave leakage amount and lamp of brightness and hole 21b in the cooking room 20.
Table 1-1 (unit: mw/cm
2)
| Aperture (mm) | Brightness (db) | Microwave leakage amount (mv/cm 2) | The life-span of lamp |
| ????3.2 | ????15 | ????0.05 | 500 hours or longer |
| ????10 | ????50 | ????0.1 | 500 hours or longer |
| ????14 | ????119 | ????0.1 | 500 hours or longer |
| ????19 | ????135 | ????0.15 | 500 hours or longer |
| ????20 | ????175 | ????6 | 30 minutes |
| ????22 | ????190 | ????20 | 15 minutes |
| ????25 | ????210 | ????50 | Once the disconnection of vibrating |
Reference table 1-1, the diameter of hole 21b is big more, and the brightness increase of cooking room 20 is many more, but the increase of microwave leakage amount is also many more.When leakage rate exceeds a predetermined value (6mw/cm
2) time, the lost of life of lamp 41.Like this, the diameter phi of hole 21b is preferably in 14mm-19mm.
Fig. 6 has represented the diverse location of hole 21b.
7 hole 21b that diameter is 14mm have been formed in the centre of upper surface 21.More particularly, according to experimental data, from the front of upper surface 21, hole 21b is respectively 1/14,2/14 apart from the degree of depth of upper surface 21 ... 6/14 and 7/14.In the experiment, the horizontal level of this filament 41a is than upper surface 21 low 3mm, high 1mm or high 2mm.
Table 2-1 (unit: mw/cm
2)
| The position, hole | The hole | Diffusing glass | Lamp support | Filament position (from upper surface) | |||
| Concordant in upper surface | Low 3mm | High 1mm | High 2mm | ||||
| ????1 | ??0.2 | ??0.2 | ??0.8 | ??0.8 | ??3.0 | ??0.5 | ??0.1 |
| ????2 | ??0.2 | ??0.2 | ??0.8 | ??0.8 | ??2.8 | ??0.5 | ??0.1 |
| ????3 | ??0.2 | ??0.2 | ??1.0 | ??0.8 | ??3.2 | ??0.5 | ??0.1 |
| ????4 | ??0.2 | ??0.2 | ??1.2 | ??1.2 | ??3.5 | ??0.5 | ??0.1 |
| ????5 | ??0.2 | ??0.2 | ??1.0 | ??0.8 | ??3.0 | ??0.5 | ??0.2 |
| ????6 | ??0.2 | ??0.2 | ??1.2 | ??1.2 | ??3.5 | ??0.5 | ??0.1 |
| ????7 | ??0.2 | ??0.2 | ??1.2 | ??1.2 | ??3.5 | ??0.5 | ??0.2 |
As show shown in the 2-1, when filament 41a and upper surface 21 were in same horizontal level, microwave leakage was approximately 0.8mw to 1.2mw.When the position of filament 41a was lower than upper surface 212mm, the position difference that microwave is let out with hole 21b arrived 3.5mw about 2.8mw greatly.When the position of filament 41a during than upper surface 21 high 1mm, microwave leakage is approximately 0.5mw, and with the location independent of hole 21b.When the position of filament 41a during than upper surface 21 high 2mm, microwave leakage is with the position difference of hole 21b, greatly about 0.1mw to 0.2mw.The maximum of the standard volume of microwave leakage is 2.0mw/cm
2So,, the optimum position of filament 41a is to be higher than hole 21b2mm.
Table 2-2 represents the height level of cooking room 20.When an illumination photometer is installed in cooking room 20 inside when measuring illumination, the luminous efficiency of the lamp 41 by being arranged in the hole 21b in the middle of the upper surface 21 reaches highest level.When this illumination photometer was installed in door 50 central, the luminous efficiency of the lamp 41 of the hole 21b by being arranged in second 2/T position reached highest level.Therefore, this lamp 41 preferably is installed in 1: 2/7 place.
As mentioned above, according to lighting device for microwave oven of the present invention, lamp is installed in the cooking room upper surface near cooking room, and directly offers cooking room from most of light of lamp, has so just strengthened illumination efficiency.Light from this lamp is dispersed by the cover glass that puts in cooking room.Thereby more effectively illuminate cooking room.
Table 2-2 (unit: Lux)
| The position, hole | The door center | Cooking room |
| ????1 | ????95.0 | ????64.9 |
| ????2 | ????116.4 | ????160.0 |
| ????3 | ????55.1 | ????171.0 |
| ????4 | ????51.8 | ????207.0 |
| ????5 | ????44.4 | ????223.0 |
| ????6 | ????41.4 | ????371.0 |
| ????7 | ????35.2 | ????424.0 |
The light that is mapped to the cooking room outside in addition is by reflecting part reflected back cooking room, and this has just strengthened the illumination efficiency of lamp.This lamp is installed in the position that illumination efficiency is strengthened, and the diameter in this hole is big as far as possible in the scope that microwave leakage does not take place.In addition, it is very simple at the inner casing top of micro-wave oven lighting device of the present invention being installed.
Claims (14)
1, a kind of lighting device for microwave oven, described micro-wave oven have the cooking room that utilizes microwave energy to come cooking food and can send the magnetic control oscillator that microwave comes heat food, and this lighting device comprises:
Be formed on the hole of described cooking room upper surface; With
Illuminate the lamp of described cooking room by the hole.
2, a kind of lighting device as claimed in claim 1 is characterized in that described lamp comprises filament and bulb, and described filament is installed on the described upper surface.
3, a kind of lighting device as claimed in claim 2 is characterized in that described filament is installed in 2mm position on the described upper surface.
4, a kind of lighting device as claimed in claim 1, the diameter that it is characterized in that described hole is between 14mm to 19mm.
5, a kind of lighting device as claimed in claim 1 is characterized in that described hole is positioned at the central authorities of described upper surface.
6, a kind of lighting device as claimed in claim 5 is characterized in that described hole is positioned at the 2/14 corresponding position of counting from described upper surface front apart from the upper surface degree of depth.
7, a kind of lighting device as claimed in claim 5, it is characterized in that described upper surface comprises that lowermost portion is positioned at the downward-sloping sloping portion of described cooking room front, described hole is positioned on the described sloping portion, and described lamp is arranged in the hole and towards the rear wall of cooking room.
8, a kind of lighting device as claimed in claim 1 is characterized in that described pore area has the cover glass that stretches to described cooking room.
9, a kind of lighting device as claimed in claim 1, the reflecting part that it is characterized in that being arranged on described lamp back reflexes to the light of described lamp in the described cooking room.
10, a kind of lighting device as claimed in claim 1 is characterized in that by lamp support described lamp being connected to the upper surface of described cooking room securely, hides and fixing described lamp.
11, a kind of lighting device as claimed in claim 10 is characterized in that the prerotation vane of described each lamp support is bent upwards and inserts lampshade.
12, a kind of lighting device for microwave oven, described micro-wave oven have the cooking room that utilizes microwave energy to come cooking food and can send the magnetic control oscillator that microwave comes heat food, and this lighting device comprises:
At least two holes are formed on the upper surface of described cooking room; With
The lamp that is positioned at each hole by the described cooking room of described Aperture Illumination.
13, a kind of lighting device as claimed in claim 12 is characterized in that described lamp produces the light of at least two kinds of colors.
14, a kind of lighting device as claimed in claim 12 is characterized in that described every lamp comprises filament that is positioned at described upper surface and the bulb that puts in described cooking room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97101293 CN1162722A (en) | 1996-02-14 | 1997-02-14 | Lighting device for microwave oven |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR3568/96 | 1996-02-14 | ||
| CN 97101293 CN1162722A (en) | 1996-02-14 | 1997-02-14 | Lighting device for microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1162722A true CN1162722A (en) | 1997-10-22 |
Family
ID=5165630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97101293 Pending CN1162722A (en) | 1996-02-14 | 1997-02-14 | Lighting device for microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1162722A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313774C (en) * | 2003-12-10 | 2007-05-02 | 三星电子株式会社 | Cooking apparatus |
| US7637624B2 (en) | 2006-05-29 | 2009-12-29 | Lg Electronics Inc. | Cooking device |
| CN101164375B (en) * | 2005-04-22 | 2010-04-21 | 浦瑞玛柯Feg有限责任公司 | Large kitchen professional oven with improved illumination |
| CN102549343A (en) * | 2009-09-26 | 2012-07-04 | 伊莱克斯家用产品股份有限公司 | An oven with at least one illuminated oven cavity |
| CN106016080A (en) * | 2016-07-26 | 2016-10-12 | 珠海格力电器股份有限公司 | Oven and light mounting structure thereof |
-
1997
- 1997-02-14 CN CN 97101293 patent/CN1162722A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313774C (en) * | 2003-12-10 | 2007-05-02 | 三星电子株式会社 | Cooking apparatus |
| CN101164375B (en) * | 2005-04-22 | 2010-04-21 | 浦瑞玛柯Feg有限责任公司 | Large kitchen professional oven with improved illumination |
| US8138459B2 (en) | 2005-04-22 | 2012-03-20 | Premark Feg L.L.C. | Large kitchen professional oven with improved lighting |
| US7637624B2 (en) | 2006-05-29 | 2009-12-29 | Lg Electronics Inc. | Cooking device |
| CN102549343A (en) * | 2009-09-26 | 2012-07-04 | 伊莱克斯家用产品股份有限公司 | An oven with at least one illuminated oven cavity |
| CN102549343B (en) * | 2009-09-26 | 2014-12-24 | 伊莱克斯家用产品股份有限公司 | An oven with at least one illuminated oven cavity |
| CN106016080A (en) * | 2016-07-26 | 2016-10-12 | 珠海格力电器股份有限公司 | Oven and light mounting structure thereof |
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