Cooking device lamp for cooking devices with microwave cooking function

Abstract

A cooking appliance light for cooking appliances with a microwave cooking function, in particular for a combination cooking appliance, is described and illustrated, - with a mounting sleeve by means of which the cooking appliance light is held in a recess in a cooking appliance wall, - with an LED light source which is arranged on the mounting sleeve and whose light is fed through a cylindrical space of the mounting sleeve into a cooking chamber of the cooking appliance, - with a microwave trap in the form of a grid-like blocking element which prevents microwave radiation from the cooking chamber from passing through the cylindrical space of the mounting sleeve into an outer region of the cooking appliance, and - with a translucent cover which is arranged at one axial end on the mounting sleeve and which prevents cooking vapors from entering the cylindrical space of the mounting sleeve.

Description

[0001] The invention relates to a cooking appliance light for cooking appliances with microwave cooking function, in particular for so-called combination cooking appliances.

[0002] Combination cooking appliances with a microwave function allow food to be prepared not only using microwave energy but also in other ways, such as baking or steaming. Combination appliances are therefore available as combined oven-microwave cooking appliances or as combination appliances that include both an oven and microwave function and a steaming function. Ovens are also known that can increase the humidity in the cooking chamber by adding small amounts of steam to support certain baking and cooking functions.

[0003] The particular challenge for appliances with microwave cooking functions lies in reliably preventing microwave radiation from escaping from the cooking chamber. Since cooking appliance lights require an opening in the cooking chamber wall through which light is fed into the cooking chamber, special attention must be paid to ensuring that these openings in the cooking chamber wall are microwave-tight.

[0004] From US Pat. No. 4,559,585 A, it is known to arrange a sleeve component behind the opening in the cooking chamber wall, within which a filament lamp is arranged. The diameter of the sleeve component is dimensioned such that microwaves can enter the sleeve component while reliably preventing them from escaping at the end facing away from the cooking chamber. A microwave trap in the form of a grid-like barrier element is omitted in this case.

[0005] A grid-like microwave trap as a blocking element in front of a lighting device of a microwave cooking appliance is disclosed in US 4 367 388 A.

[0006] DE 29 37 499 B discloses a cooking appliance light for microwave ovens. A mounting sleeve is located in a cutout in the oven wall. This mounting sleeve is provided with an internal thread. The light consists of a metal sleeve with a translucent cover and a locking element located behind the cover. The metal sleeve has an external thread that engages the internal thread of the mounting sleeve to secure the light to the cooking chamber wall.

[0007] US 7,267,450 B2 shows a cooking appliance light of this type, in which a pot-shaped housing holding the light source is inserted into the opening of a cooking chamber wall. A translucent cover, which is provided with a locking element on the inside, is snapped into the pot-shaped housing.

[0008] DE 36 06 421 C1 shows that a sleeve surrounding the lamp of the luminaire can be perforated in a sieve-like manner so that it serves as a barrier element for microwave radiation.

[0009] DE 36 41 420 C2 shows a cooking appliance light with a classic incandescent filament lamp. It shows how microwave radiation can be shielded by surrounding the lamp bulb with a perforated sleeve.

[0010] In EP 4 033 861 A1 of the applicant, a cooking appliance light is shown which uses an LED as a light source.

[0011] Conventional light sources, such as gas discharge lamps and incandescent filament lamps, are increasingly being replaced by LED light sources in cooking appliances. LED light sources have the primary advantage of consuming significantly less power, thus positively impacting and reducing the overall energy consumption of a cooking appliance. Furthermore, they are compact, allowing for a smaller installation space. Overall, LED light sources open up new possibilities in the design of cooking appliances.

[0012] The smaller form factor of LED light sources also allows for a significant reduction in the number of openings in the cooking chamber wall required to introduce the light illuminating the cooking chamber, which also helps prevent heat loss and thus reduce the energy consumption of cooking appliances. Since the energy efficiency of cooking appliances is a key marketing argument, these factors are of considerable importance for economic success.

[0013] However, this is offset by a significant investment volume when certain parts of cooking appliances need to be redesigned for the use of LED lighting. The cooking chamber walls are particularly noteworthy here, as these are manufactured from sheet metal using specially designed presses. The forming process also creates the wall openings for, among other things, the cooking chamber lighting. For many manufacturers, this generally requires new forming tools for the use of LED lighting, which requires significant investment.

[0014] The object of the invention is to create a cooking appliance light for cooking appliances with microwave cooking function, which can be used in wall cutouts for conventional lamps and yet meets the requirements of LED lamps.

[0015] The invention is solved by a cooking appliance light with the features of claim 1.

[0016] Particularly when the advantageous snap-in mounting of the sleeve to the cooking chamber wall described above is preferred, the invention faces the problem that the snap-in wings protruding from the peripheral wall result in openings in the peripheral wall of the mounting sleeve. Such peripheral wall openings pose the risk of microwave radiation escaping instead of being properly absorbed.

[0017] The invention therefore provides that the mounting sleeve is provided with an inner sleeve which covers the openings in the peripheral wall of the mounting sleeve caused by the deployment of the locking wings.

[0018] The additional effort required for pre-assembling the cooking appliance light is more than offset by the simple snap-in installation at the cooking appliance manufacturer, so that this effort is justified in every respect.

[0019] Easy assembly of the inner sleeve in the mounting sleeve is ensured if the inner sleeve itself has locking tabs protruding from the inner sleeve peripheral wall, by means of which the inner sleeve locks into the mounting sleeve.

[0020] In order to ensure proper absorption of the microwave radiation, the locking tabs are provided with a free locking end pointing towards the translucent cover and a connecting end facing away from the cover, with which they are held to the inner sleeve peripheral wall.

[0021] Furthermore, the absorption of the microwave radiation when the inner sleeve is locked into the outer sleeve is ensured by the fact that the locking tabs of the inner sleeve and the locking wings of the outer sleeve are arranged circumferentially offset from one another in order to avoid alignment of the circumferential wall openings of the inner sleeve and the mounting sleeve.

[0022] From a manufacturing perspective, it is significantly advantageous if the mounting stop is formed by the end of the inner sleeve closest to the LED light source. This eliminates the need to machine the mounting sleeve to create a mounting stop for holding the locking element between the LED holder and the mounting stop.

[0023] It is also intended that the centering springs engage around the inner sleeve circumferential wall.

[0024] If care is taken to ensure that the diameter of the locking element corresponds to or slightly exceeds the diameter of the inner sleeve, a gap-free arrangement of the locking element on the inner sleeve is possible.

[0025] It is also intended that the inner sleeve form a retaining flange at its end closest to the translucent cover, which rests on or overlaps the mounting flange. This ensures that there is no open annular gap between the mounting sleeve and the inner sleeve on the cooking chamber side through which microwave radiation could penetrate to the outside.

[0026] An electrical connection between the locking element and the cooking chamber wall can also be established if the mounting sleeve provides a mounting stop for the locking element and the holding part holds the locking element to the mounting stop.

[0027] Further advantages of the invention and a better understanding thereof will become apparent from the following description of exemplary embodiments. They show: Fig. 1a: an exploded view of a cooking appliance light not claimed, Fig. 1b: a perspective overall view of the cooking appliance light according to Fig. 1a, Fig. 2: a top view of the cooking appliance light according to Fig. 1 without cover glass, Fig. 3: the illustration of the cooking appliance light after Fig. 1 in a first side view, Fig. 4: a sectional view of the cooking appliance light according to section line IV-IV in Fig. 3 , Fig.5:the cooking appliance light after Fig. 1 in a second side view, Fig. 6: a sectional view of the cooking appliance light according to section line VI-VI in Fig. 5 , Fig. 7: an exploded view of a claimed embodiment of a cooking appliance light according to the invention, Fig. 8 the cooking appliance light according to Fig. 7 in perspective view, Fig. 9: a view from above of the cooking appliance light after Fig. 7 without cover glass, Fig. 10: a first side view of the cooking appliance light after Fig. 7 , Fig. 11: a sectional view of the cooking appliance light according to section view XI-XI in Fig. 10 , Fig. 12: a second side view of the cooking appliance light according to Fig. 7, Fig. 13: a sectional view according to section line XIII-XIII in Fig. 12 .

[0028] Two cooking appliance lights are described below. For better understanding, different number ranges are used for the different embodiments. Components of the first, unclaimed embodiment are provided with reference numbers from the number range 100 to 199, while components of the second, claimed embodiment are provided with reference numbers from the range 200 to 299. Identical or equivalent components in the tens number range have identical numbers and, in case of doubt, are also named identically. Unless otherwise stated, what is stated for one embodiment also applies to the other embodiment.

[0029] The first embodiment is shown in the Figures 1 to 6This is a cooking appliance light, designated overall by reference number 100, which is intended for use in a microwave cooking appliance, particularly in a combination cooking appliance with a microwave cooking function. The cooking appliance itself is not shown.

[0030] The exploded view according to Fig. 1a first shows the essential components of the cooking appliance light 100.

[0031] The central component of the cooking appliance light 100 is a mounting sleeve 101.

[0032] This has a mounting flange 102 which is provided with through holes 103.

[0033] The mounting sleeve 101 serves to anchor the cooking appliance light 100 in the cutout of a cooking chamber wall. For this purpose, the mounting flange 102 rests on the inside of the cooking chamber wall. The through-holes 103 align with threaded holes and, if applicable, threaded bosses on the cooking chamber wall. Screw bolts (not shown) penetrate the through-hole 103 to reach the threads on the cooking chamber wall and hold the mounting sleeve 101, and with it the cooking appliance light 100, to the cooking chamber wall.

[0034] The sleeve interior 104 of the mounting sleeve 101 is closed on the cooking chamber wall side by a cover glass 105. A ring element 106 is arranged between the mounting flange 102 and the cover glass 105. This ring element has a sealing effect and can also apply a longitudinal axial preload to the sleeve to secure the cover glass 105 screwed into the mounting sleeve 101 against unintentional unscrewing.

[0035] For screw fastening of the cover glass 105 in the mounting sleeve 101, the cover glass 105 has a threaded neck 108 provided with an external thread 107. The external thread 107 engages in thread sections 109 which are embossed into the peripheral wall 110 of the mounting sleeve 101.

[0036] The mounting sleeve 101 then forms retaining tabs 111 at its end facing away from the cover glass 105 or the mounting flange 102. The retaining tabs 111 are directed longitudinally axially and are set with their free ends pointing radially inward.

[0037] The illuminant 112 of the cooking appliance light 100 is an LED light source, which is designed in the form of a circuit board 113 that carries an unspecified LED and is also provided with terminals 114 for connecting connecting conductors 115. The connecting conductors 115 primarily serve to supply voltage to the LED, but can also be provided for transmitting control signals if required.

[0038] The circuit board 113 is mounted on a counter-support 116, here in the form of a heat sink. The heat sink 116 serves to dissipate the waste heat generated during operation of the LED. Pins 117 are provided to secure the circuit board 113 to the heat sink 116.

[0039] A holding part 118 receives the heat sink 116 with the printed circuit board 113 arranged thereon via a holding arm 119 at its end facing away from the mounting sleeve 101. The heat sink 116 is preferably latched to the holding arms 119. Additionally, it can be secured to the holding part 118 via a securing element 120, for example in the form of a screw.

[0040] In the embodiment shown here, the holding part 118 also carries an optical element 121, for example a lens, which is arranged in the beam path of the light-emitting LED of the circuit board 113 and directs the emitted light into the cooking chamber for optimal light feed. The optical element 121 is arranged in a holding ring 122. This holding ring 122 ensures the correct distance between the optical element 121 and the LED. Furthermore, the holding ring 122 can also serve as a reflector to guide scattered light emitted by the LED to the optical element 121 and thus make it usable for illuminating the cooking chamber.

[0041] The holding part 118 is also formed by several annular discs 123 spaced apart along the sleeve's longitudinal axis. These annular discs 123 each form a heat shield to dampen the radiant heat radiating from the cooking chamber through the mounting sleeve 101 toward the light source 112. Furthermore, the radial gaps 124 between the annular discs 123 allow an air flow to pass through, which serves to dissipate heat and thus cool and protect the LED light source 112.

[0042] Finally, the cooking appliance light 100 comprises a microwave trap in the form of a grid-like blocking element 125. This is designed in the form of a substantially circular, perforated disc. Centering means 126 in the form of axially directed spring ribs, which extend slightly radially outward, extend from the disc's edges. These are supported on the inner circumference of the peripheral wall 110 during installation of the blocking element 125 in the mounting sleeve 101 and center the blocking element 125 within the mounting sleeve 101.

[0043] Finally, it should be noted that the holding part 118 forms plug-in receptacles 127 which are provided for receiving the holding tabs 111, wherein each plug-in receptacle 127 can have a locking lug 128 which engages in a locking opening (not shown) of the holding tab 111.

[0044] The perspective view according to Fig. 1bshows the cooking appliance light 100 just described in assembled form. Here, one can clearly see how the cover glass 105 is attached to the mounting sleeve 101. The ring element 106 is arranged between the cover glass 105 and the mounting flange 102.

[0045] The holding part 118 carries, on its side facing away from the cover glass 105, the heat sink 116 provided with the printed circuit board 113 with its holding arms 119.

[0046] The retaining tabs 111 are seated in the plug-in receptacle 127 of the retaining part 118 and thus fix the retaining part 118 to the mounting sleeve 101.

[0047] The pre-assembled cooking appliance light 100 can then be finally installed in the cooking appliance by the cooking appliance manufacturer.

[0048] Fig. 2shows a top view of the cooking appliance light 100, with the cover glass 105 hidden. Therefore, the annular blocking element 125 in the form of a perforated disc can be seen, as it is arranged centered in the sleeve interior 104. It is also visible that the centering ensures that the fit clearance required for assembly in the form of circumferential gap sections 129 is approximately uniform all around. The distance caused by each circumferential gap section 129 between the circumferential wall 110 of the mounting sleeve 101 and the blocking element 125 is not greater in its radial depth than the diameter of the perforation holes of the blocking element 125. This ensures that no microwave radiation can penetrate outward through the mounting sleeve 101 in the axial direction.

[0049] Fig. 3shows another side view of the cooking appliance light 100. This shows once again how the threaded sections 109 are embossed into the peripheral wall 110 of the mounting sleeve 101. It is also visible that the retaining tabs 111 of the mounting sleeve 101 are seated in the plug-in receptacles 127 of the holding part 118.

[0050] Fig. 4 shows a sectional view of the cooking appliance light 100 along the section line IV-IV in Fig. 3. This illustration initially shows the interaction of the thread sections 109 on the mounting sleeve 101 and the external thread 107 of the cover glass 105. However, special attention must be paid here to the locking element 125. It can be seen from this drawing that the locking element 125 sits on the holding part 118 in such a way that the centering means 126 also serve to hold the locking element 125 on the holding part 118, preferably to snap it onto it. This initially has assembly advantages. The locking element 125 sitting on the holding part 118 can thus be fixed to the mounting sleeve 101 together with the holding part 118. The holding part 118, with its end section near the cover glass 105, penetrates at least minimally into the sleeve interior 104. In this way, the locking element 125 is introduced into the sleeve interior 104 strictly horizontally or transversely to the sleeve longitudinal axis, so that a correct mounting position is ensured.

[0051] Also visible here is how the heat sink 116 is secured in the holding part 118 by the securing element 120. For this purpose, the holding part 118 forms a securing dome 130 that extends in the opposite direction to the cover glass 105. Furthermore, it is visible how the heat sink 116 is engaged behind by a locking projection 131 of a holding arm 119.

[0052] It is also visible that the locking lugs 128 of the plug-in receptacles 127 engage in the retaining tabs 111 of the mounting sleeve 101 in a securing manner.

[0053] Finally, it can be seen how the optical element 121 sits in the retaining ring 122 and how the retaining ring 122 correctly positions the optical element 121 at a distance from the circuit board 113 or the illuminant 112. This illustration also clearly shows that, with appropriate mirroring of the inner surfaces 132, the retaining ring 122 can serve as a reflector.

[0054] Fig. 5shows another side view of the cooking appliance light 100. This is different from the illustration according to Fig. 3 rotated by about 90 degrees.

[0055] The Figures 5 and 6 show the Figures 3 and 4 the facts already described from a correspondingly changed perspective. In particular, one can Fig. 6 Remove the fastening of the circuit board 113 by means of the plug pins 117 on the heat sink 116.

[0056] The Figures 7 to 13 show a cooking appliance lamp, generally designated by reference number 200, as a second embodiment of the invention.

[0057] The second cooking appliance lamp 200 claimed as an invention is initially in Figure 7 shown in the form of an exploded view and also has a mounting sleeve 201, which serves to arrange the cooking appliance light 200 in the recess of a cooking chamber wall of a cooking appliance.

[0058] The cooking appliance light 200 is essentially identical or has the same function as the cooking appliance light 100 of the first embodiment, which is briefly described below.

[0059] The mounting sleeve 201 also has a mounting flange 202 and forms a sleeve interior 204. The cover glass 205 has a threaded neck 208 with an external thread 207. A peripheral wall 210 of the mounting sleeve 201 forms retaining tabs 211. These are arranged at the end of the mounting sleeve 201 facing away from the mounting flange 202 and extend away from the mounting flange 202 in the longitudinal axial direction, with the retaining tabs 211 being slightly radially inwardly angled.

[0060] A light source 212 in the form of a circuit board 213 with a non-specifically labeled LED mounted thereon is also present in the second embodiment of the cooking appliance light 200. Here, too, the circuit board 213 has terminals 214, which serve to connect connecting conductors 215. These connecting conductors 215 serve, on the one hand, to supply electricity to the light source 212, but can also be used to transmit control signals if necessary.

[0061] Here, too, the printed circuit board 213 is fastened to a counter bearing 216 in the form of a heat sink by means of plug pins 217.

[0062] The heat sink 216 itself is arranged at the end of a holding part 218 facing away from the cover glass 205 and is secured by holding arms 219 provided there. Here, too, the holding arms 219 can latch onto the heat sink 216. However, it is also possible here, and specifically provided in the second embodiment, to use a securing element 220 for additional anchoring of the heat sink 216 to the holding part 218.

[0063] The second embodiment of the cooking appliance light 200 also provides for an optical element 221 to be arranged in the beam path of the light emitted by the illuminant 212 in order to direct, for example, in particular, to collect, the light while maximizing the light yield to optimize the illumination of the cooking chamber. Here, too, the optical element 221 is mounted in a retaining ring 222, which simultaneously maintains the correct distance between the optical element 221 and the LED. Here, too, the retaining ring 222 can additionally be configured as a reflector and reflect scattered light toward the optical element 221 and thus toward the cooking chamber.

[0064] In the second embodiment of the invention, the holding part 218 also has a plurality of annular discs 223 arranged at an axial distance from one another, so that gaps 224 are formed between the annular discs 223. The central annular space of each holding ring 223 allows the light emitted by the LED to pass through the holding part 218 toward the cooking chamber.

[0065] The holding part 218 has plug-in receptacles 227, which are also provided with the optional locking lug 228 and serve to receive the holding tabs 211. In the illustrations of the second embodiment, it can be seen that the holding tabs 211 are provided with a locking opening 233, into which the locking lugs 228 serve to secure the holding part 218 to the mounting sleeve 201.

[0066] Figure 7also shows a disc-shaped blocking element 225, which serves as a microwave trap and is perforated to allow light to pass through by means of a plurality of small openings. In this embodiment, the blocking element 225 also has centering means 226. These are also formed here as essentially axially directed spring tabs. In contrast to the first embodiment, the blocking element 225 here has, by way of example, a fastening tab 234 to which a flat plug 235 can be attached in an electrically conductive manner. The flat plug 234 can, for example, be welded, soldered, or mechanically fastened to the fastening tab. By means of this flat plug 235, it is possible to establish an electrical connection to a mating plug on the side of the cooking chamber wall via a discharge cable in order to be able to neutralize the energy of microwaves impinging on the blocking element 225.

[0067] However, there are obvious deviations in detail, particularly initially on the side of the mounting sleeve 201. The mounting sleeve 201 has locking wings 236 that are notched radially outwards from the peripheral wall 210. When mounting the cooking appliance light 200 in the cutout of a cooking chamber wall, it is inserted from the cooking chamber outwards into the cooking chamber wall recess. The insertion movement ends when the mounting flange 202 rests against the inside of the cooking chamber wall. During the insertion process, the locking wings 236 slide along the cutout and, after passing through the cutout, engage behind the cooking chamber wall, so that the cooking chamber wall is arranged between the locking wings 236 and the mounting flange 202 and the cooking appliance light 200 is thus securely held.

[0068] A coding web 237 formed by the peripheral wall 210 allows a safe and defined relative alignment of the cooking appliance light 200 to the wall cutout

[0069] In the second embodiment of the invention, the cooking appliance light 200, an inner sleeve 238 is also provided. This inner sleeve 238 is smaller in diameter than the mounting sleeve 201. The inner sleeve 238 has a sleeve wall 239. Threaded sections 209 are stamped into this sleeve wall 239. These interact with the external thread 207 of the cover glass 205, so that the cover glass 205 can be screwed into the inner sleeve 238 for securing.

[0070] The inner sleeve 238 has a support flange 240 formed at its end near the cover glass 205. The support flange 240 covers an annular space 244 existing between the inner sleeve 238 and the mounting sleeve 201, so that microwave radiation is reliably prevented from entering the annular space 244.

[0071] To anchor the inner sleeve 238 in the mounting sleeve 201, the inner sleeve 238 has locking tabs 241. These are extended from the sleeve wall 239. The locking tabs 241 are connected to the sleeve wall 239 with their end remote from the cover glass 205, whereas the cover glass 205 near the end of the locking tabs 241 is freely extended and radially outward.

[0072] Figure 8 shows a perspective view of the cooking appliance light 200 in assembled form. The cover glass 205 is screwed into the inner sleeve 238, with the external thread 207 engaging the threaded portions 209 of the inner sleeve 238.

[0073] The locking element 225 is arranged in the mounting sleeve 201 in a manner to be described later. The holding part 218 is also connected to the mounting sleeve 201 by the holding tabs 211 engaging the plug-in receptacles 227 of the holding part 218. Since, as already explained, the assembly comprising the holding part 218, the illuminant 212, and the heat sink 216 is identical to the first embodiment, reference is made here to the previous explanations.

[0074] Figure 8 shows, however, in contrast to the first embodiment, that the aforementioned flat plug 235, which in this embodiment is electrically conductively connected by the blocking element 225, is led out of the mounting sleeve 201 away from the cover glass in order to be able to attach an electrical conductor.

[0075] Figure 8also shows how the mounting sleeve 201 and the inner sleeve 238 interact with respect to the locking wings 236. It has already been mentioned above and Figure 8 It is also evident that by extending the locking wings 236 from the peripheral wall 210 of the mounting sleeve 201, openings 242 are created in the peripheral wall 210. The inner sleeve 238 is arranged in the mounting sleeve 201 in such a way that it covers these openings 242. Consequently, microwaves penetrating through the cover glass 205 cannot escape through the openings 242.

[0076] Figure 9 the second embodiment is the analog representation to Figure 2 of the first embodiment. Here, too, a view from above of the cooking appliance light 200 is shown, with essentially identical facts to Figure 2 or the first embodiment. The inner sleeve space 243 is arranged

[0077] Blocking element 225 in the form of a disc perforated by a plurality of holes. Of the inner sleeve 238, the support flange 240, which covers the mounting flange 202 of the mounting sleeve 201, can be seen in particular in this view. Furthermore, the function of the centering means 226, which hold the blocking element 225 centered in the inner sleeve space 243, is also evident here. In this way, the fit or assembly play required for mounting the blocking element and the resulting circumferential gap sections 229 are reduced to a size no larger than the diameter of the perforation holes. This reliably prevents microwave radiation from escaping axially from the inner sleeve space 243 through the circumferential gap sections 229 into the outside environment.

[0078] The side view of the cooking appliance light 200 of the second embodiment in Figure 10 has its counterpart in Figure 3of the first embodiment. In addition to what has been described there, it is shown here again in particular how the flat plug 235 is led out of the interior space 204 of the mounting sleeve 201. The locking effect of the locking lug 228 in the plug receptacle 227 for securing the holding arm 229 is also clearly visible here.

[0079] Figure 11 shows a sectional view according to section line XI in Figure 10 . This shows the basic structure of the cooking appliance light 200 in assembled form. This is largely identical to the first embodiment and there the Figure 4 , as far as the components below the mounting sleeve 201, i.e. the components arranged at the end of the mounting sleeve 201 remote from the cover glass, are concerned. In this respect, reference is made to the Figure 4 said.

[0080] Out of Figure 11However, the interaction of mounting sleeve 201 and inner sleeve 238 becomes particularly clear once again. It can be seen that inner sleeve 238 is arranged in the interior space 204 of mounting sleeve 201 and held concentrically. Support flange 240 covers mounting flange 202 and thus covers the annular space 244 necessarily present between mounting sleeve 201 and inner sleeve 238 from the cooking chamber (not shown). Penetration of microwave radiation into this annular space 244 and thus a possible axial passage of microwave radiation into the outside environment is thus reliably prevented.

[0081] It is not absolutely necessary, but advantageous, if—as here—the inner sleeve 238 locks into the mounting sleeve 201. This considerably simplifies the arrangement of the inner sleeve 238 in the mounting sleeve 201. The locking tabs 241 described above serve this purpose.

[0082] Since the locking tabs 241, projecting from the sleeve wall 239, also introduce openings into the sleeve wall 239, the special arrangement of the locking tabs 241 with their connected end far from the cover glass and the end protruding close to the cover glass 205 was initially chosen. In this way, incident microwave radiation is reflected back toward the cooking chamber or absorbed by an electrical conductor. If microwave radiation escapes through the openings in the sleeve wall 239, it can at most enter the annular space 244 and is absorbed there upon impact with the mounting sleeve 201. To reliably prevent radial escape of microwave radiation from the arrangement of the mounting sleeve 201 and inner sleeve 238, the openings in the sleeve wall 239 are always arranged sufficiently offset from the openings in the peripheral wall 210 of the mounting sleeve 201.

[0083] You can see in Figure 11further, how the cover glass 205 is held in the inner sleeve 238, which is done in an analogous manner to the arrangement of the cover glass 105 in the mounting sleeve 101 of the first embodiment.

[0084] Figure 12 now shows a second side view of the cooking appliance light 200. The counterpart to Figure 12 is the Figure 5 to the first embodiment. In this respect, what is stated there is essentially identical or analogous to Figure 12 . In this respect, reference is made to the previous explanations. Regarding the specific components of the second embodiment, reference is made to the description of Figure 10 referred to.

[0085] Figure 13 shows a sectional view according to section line XIII in Figure 12 . The counterpart to Figure 13 is the Figure 6 of the first embodiment. Unless specific components of the cooking appliance light 200 according to the second embodiment are shown, the Figure 6 executed.

[0086] In particular, however, and also in conjunction with Figure 11 - Here, attention should be drawn to the arrangement of the locking element 225 of the cooking appliance light 200. The locking element 225 of the cooking appliance light 200 is seated at the end of the inner sleeve 238 remote from the cover glass, which thus represents an assembly stop for the locking element 225. The locking element 225 is mounted between the end of the inner sleeve 238 remote from the cover glass 205 and the end of the holding part 218 near the cover glass 205.

[0087] In contrast to the first embodiment, the centering means 226 are not supported on the inner circumference of the sleeve wall 239 or the peripheral wall 210. Instead, the centering means 226 rest on the outer circumference of the sleeve wall 239 of the inner sleeve 238. They hold the locking element 225 there at least frictionally; a positive fit is certainly conceivable.

[0088] While it was proposed for the first exemplary embodiment, the cooking appliance light 100, to pre-assemble the locking element 125 on the holding part 118, it is proposed for the cooking appliance light 200 according to the second embodiment to pre-assemble the locking element 225 on the inner sleeve 238. Thus, for mounting the light, the inner sleeve 238 together with the locking element 225 is inserted into the mounting sleeve 201. The holding part 218 is placed in the opposite direction, from the side remote from the cover glass 205, onto the end of the mounting sleeve 201 remote from the cover glass 205, so that in this way the locking element 225 is securely arranged between the holding part 218 and the inner sleeve 238.

[0089] The second embodiment can dispense with an inner sleeve 238 if the wall gaps created by the deployment of the locking wings 236 are kept narrow enough. The escape of microwave radiation can then be reliably prevented even without an inner sleeve 238. The fixing of the holding part 218 and the blocking element 225, as well as the cover glass 205, is then carried out analogously to the first embodiment.

[0090] In summary, two examples of cooking appliance lights 100, 200 were presented, which offer the following essential advantages for cooking appliance manufacturers.

[0091] Cooking appliance manufacturers can use the lights 100, 200 for microwave cooking appliances or combination cooking appliances with a microwave cooking function, as an effective blocking element and a clever lamp design reliably prevent microwave radiation from escaping from the cooking chamber. In the second embodiment, the support flange 240 of the inner sleeve 238 also contributes to this. In this case, a secure and centered mounting of the blocking element 125, 225 in the cooking appliance light 100, 200 is guaranteed in every case.

[0092] The cooking appliance light 100, 200 is designed for installation in cooking chamber wall cutouts for conventional light sources, but uses an LED light source 112, 212. In this respect, the cooking appliance lights 100, 200 adapt existing component structures to modern LED light sources. Advantageous fastening techniques are used to anchor the cooking appliance light 100, 200, which were previously only used for cooking appliance lights with conventional light sources 112, 212.

[0093] Nevertheless, both embodiments of the cooking appliance lights 100, 200 also manage to meet the requirements of LED lamps, in particular to reliably protect them from the potentially harmful heat radiation of the cooking chamber. For this purpose, the LED lamp 112, 212 is arranged outside the mounting sleeve 201, in particular at the end thereof remote from the cover glass 105, 205. This not only distances the LED lamp 112, 212 from the cooking chamber. It also mounts the LED lamp 112, 212 outside the sleeve body, in which heat buildup can occur in case of doubt. The use of a holding part 118, 218 enables the lamps 112, 212 to be mounted outside the mounting sleeve 201.

[0094] In this case, the applicant uses a special holding part which, in addition to the advantageous arrangement of the illuminants 112, 212 outside the mounting sleeve 201, also ensures advantageous ventilation through gaps 224, 124 and protection against heat radiation via annular discs 123, 223. LIST OF REFERENCE SYMBOLS 100 Cooking appliance light 128 locking lug 101 Mounting sleeve 129 circumferential gap section 102 Mounting flange 130 Security dome 103 Through holes 131 locking projection 104 Shell interior 132 inner surface 105 Cover glass 106 Ring element 107 external thread 108 threaded neck 109 Thread section 110 Perimeter wall of 101 111 retaining tab 112 Light bulbs 113 circuit board 114 connection terminal 115 connecting conductor 116 Counter bearing / heat sink 117 socket pin 118 Holding part 119 holding arm 120 securing element 121 optical element 122 retaining ring 123 Ring disc 124 space 125 locking element 126 Centering agent 127 Plug-in socket 200 Cooking appliance light 228 locking lug 201 Mounting sleeve 229 circumferential gap section 202 Mounting flange 230 Security dome 204 Shell interior 231 locking projection 205 Cover glass 232 inner surface 207 external thread 233 Snap opening v. 211 208 threaded neck 234 Mounting tab 209 Thread section 235 Flat plug 210 Perimeter wall of 201 236 Locking wing v. 201 211 retaining tab 237 Coding bridge 212 Light bulbs 238 inner sleeve 213 circuit board 239 sleeve wall 214 connection terminal 240 support flange 215 connecting conductor 241 locking tab 216 Counter bearing / heat sink 242 breakthrough 217 socket pin 243 inner sleeve space 218 Holding part 244 annular space 219 holding arm 220 securing element 221 optical element 222 retaining ring 223 Ring disc 224 space 225 locking element 226 Centering agent 227 Plug-in socket

Claims

1. A cooking appliance light (200) for cooking appliances with a microwave cooking function, in particular for a combination cooking appliance, - comprising a mounting sleeve (201) by means of which the cooking appliance light (200) is held in a recess in a cooking appliance wall, - comprising an LED light source (212) arranged on the mounting sleeve (201) and whose light is fed through a cylindrical space of the mounting sleeve (201) into a cooking chamber of the cooking appliance, - comprising a microwave trap in the form of a grid-like blocking element (225) which prevents the passage of microwave radiation from the cooking chamber through the cylindrical space of the mounting sleeve (201) into an outer region of the cooking appliance, - comprising a translucent cover (205) arranged at one axial end on the mounting sleeve (201) and which prevents the entry of cooking vapors into the cylindrical space of the mounting sleeve (201), characterized in thatthe mounting sleeve (201) is provided with a mounting flange (202) and with locking wings (236) projecting from its peripheral wall for locking onto a cooking chamber wall.

2. Cooking appliance light (200) according to claim 1, characterized in that - the LED light source (212) is mounted on a holding part (218), - the holding part (218) is arranged on the axial end of the mounting sleeve (201) facing away from the cover (205), - the LED light source (212) is arranged upstream of the axial end of the mounting sleeve (201) facing away from the cover (205) in the light feed direction.

3. Cooking appliance light (200) according to claim 1 or 2, characterized in that the locking element (215) is arranged within the mounting sleeve (201) and is electrically conductively connected to the mounting sleeve (201).

4. Cooking appliance light (200) according to one of claims 1 to 3, characterized in that the locking element (215) has centering means (216) which align the locking element (225) centered within the mounting sleeve (201).

5. Cooking appliance light (200) according to claim 4, characterized in that the centering means (216) are designed as centering springs arranged on the outside circumference of the locking element (225) and integrally connected to the locking element (225).

6. Cooking appliance light (200) according to one of the preceding claims, characterized in that the locking element (225) is provided with a plug connection (235) for electrically conductive connection to a cooking chamber wall.

7. Cooking appliance light (200) according to claim 1, characterized in that the mounting sleeve (201) is provided with an inner sleeve (238) which covers the openings in the peripheral wall of the mounting sleeve (201) caused by the deployment of the locking wings (236).

8. Cooking appliance light (200) according to claim 7, characterized in that the inner sleeve (238) in turn has locking tabs (241) projecting from the inner sleeve peripheral wall (239), by means of which the inner sleeve (238) locks into the mounting sleeve (201).

9. Cooking appliance light (200) according to claim 8, characterized in that the locking tabs (241) have a free locking end pointing in the direction of the translucent cover (205) and a connecting end facing away from the cover (205), with which they are held on the inner sleeve peripheral wall (239).

10. Cooking appliance light (200) according to claim 8 and 9, characterized in that the locking tabs (241) of the inner sleeve (238) and the locking wings (236) of the mounting sleeve (201) are arranged circumferentially offset from one another in order to prevent alignment of the circumferential wall openings of the inner sleeve (238) and the mounting sleeve (201).

11. Cooking appliance light (200) according to one of claims 8 to 10, characterized in that the mounting stop is formed by the sleeve end of the inner sleeve (238) near the LED light source (212).

12. Cooking appliance light (200) according to claim 6 and 11, characterized in that the centering springs engage around the inner sleeve peripheral wall (239).

13. Cooking appliance light (200) according to claim 1 and 7, characterized in that the inner sleeve (238) forms a holding flange at its end near the translucent cover (205), which rests on the mounting flange (202).

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