Oven light for ovens with microwave function

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 ovens with a microwave cooking function allow food to be prepared not only using microwave energy but also in other ways, such as baking or steaming. These combination appliances are therefore available as combined oven-microwave ovens or as combination appliances that include a steam cooking function in addition to the oven and microwave cooking functions. Furthermore, there are ovens 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 with appliances that have a microwave cooking function lies in reliably preventing microwave radiation from escaping the cooking chamber. Since oven lights require an opening in the cooking chamber wall through which light enters the chamber, special attention must be paid to making these openings microwave-tight.

[0004] From US patent 4,559,585 A, it is known to arrange a sleeve component behind the opening in the oven wall, within which a filament lamp is located. The diameter of the sleeve component is dimensioned such that microwaves can enter the sleeve component, but their exit at the end facing away from the oven is reliably prevented. A microwave trap in the form of a grid-like barrier element is not used.

[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 an oven light for microwave ovens. In this design, a mounting sleeve is inserted into 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 with the internal thread of the mounting sleeve to secure the light to the oven wall.

[0007] US 7,267,450 B2 discloses a generic oven light in which a pot-shaped housing part holding the light source is inserted into an opening in an oven wall. A translucent cover, which is provided with a locking element on the inside, is snapped into the pot-shaped housing part.

[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 bulb. It illustrates that shielding of microwave radiation is possible by enclosing the bulb in 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 lamps, are increasingly being replaced by LEDs in cooking appliances. LEDs offer the significant advantage of considerably lower power consumption, thus positively impacting and reducing the overall energy consumption of a cooking appliance. Furthermore, their compact size allows for a reduction in the space required for lighting. Overall, LEDs open up new possibilities in the design of cooking appliances.

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

[0013] However, this is offset by a significant investment if certain parts of cooking appliances need to be redesigned for the use of LED lighting. This is particularly true for the cooking chamber walls, as these are manufactured from sheet metal using specially designed presses. During the forming process, the wall openings for the cooking chamber lighting, among other things, are also created. For many manufacturers, the use of LED lighting therefore typically requires new forming tools, resulting in a considerable 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 light sources and yet meets the requirements for LED light sources.

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

[0016] Particularly when the advantageous snap-fit ​​mounting of the sleeve to the cooking chamber wall described above is preferred, the invention faces the problem that the snap-fit ​​wings projecting from the circumferential wall result in openings in the circumferential wall of the mounting sleeve. Such circumferential 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 conceals the openings in the circumferential 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 assembly 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 projecting from the inner sleeve's circumferential wall, by means of which the inner sleeve locks into the mounting sleeve.

[0020] To ensure proper absorption of microwave radiation, the locking tabs are designed to have a free locking end pointing towards the translucent cover and a connecting end facing away from the cover, with which they are held against the inner sleeve circumferential wall.

[0021] Furthermore, the absorption of microwave radiation during locking of the inner sleeve in 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 each other in order to prevent the circumferential wall penetrations of the inner sleeve and the mounting sleeve from aligning.

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

[0023] It is also planned that the centering springs will grip the inner sleeve's 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] Furthermore, the inner sleeve is designed to 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 escape.

[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 retaining part holds the locking element against the mounting stop.

[0027] Further advantages of the invention, as well as a better understanding of it, will become apparent from the following description of exemplary embodiments. These show: Fig. 1a: an exploded view of an unclaimed cooking appliance light, 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 according to 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 according to Fig. 1 In a second side view, Fig. 6: a sectional view of the cooking appliance light along 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 top view of the cooking appliance light according to Fig. 7 without cover glass, Fig. 10: a first side view of the cooking appliance light according to Fig. 7 , Fig. 11: a sectional view of the cooking appliance light according to section 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] The following describes two oven lights. For clarity, different number ranges are used for the different embodiments. Components of the first, unclaimed embodiment are designated with reference numerals from the range 100 to 199, while components of the second, claimed embodiment are designated with reference numerals from the range 200 to 299. Identical or functionally equivalent components within the range of ten bear identical numerals and, in case of doubt, are also named identically. Unless otherwise specified, what is stated for one embodiment also applies to the other embodiment.

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

[0030] The exploded view according to Fig. 1a First, it shows the essential individual parts of the cooking appliance light 100.

[0031] The central component of the cooking appliance light 100 is a mounting sleeve 101. This has a mounting flange 102, which is provided with through holes 103.

[0032] The mounting sleeve 101 serves to anchor the oven light 100 in the cutout of an oven wall. For this purpose, the mounting flange 102 rests on the inside of the oven wall. The through-holes 103 align with threaded holes and, if applicable, threaded bosses on the oven wall. Screw bolts (not shown) extend through the through-hole 103 to reach the threads on the oven wall and hold the mounting sleeve 101, and with it the oven light 100, to the oven wall.

[0033] The inner chamber 104 of the mounting sleeve 101 is closed on the oven 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 in order to secure the cover glass 105, which is screwed into the mounting sleeve 101, against unintentional unscrewing.

[0034] 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 circumferential wall 110 of the mounting sleeve 101.

[0035] 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 longitudinally oriented and their free ends are set radially inwards.

[0036] The light source 112 of the cooking appliance light 100 is an LED light source, which is designed in the form of a circuit board 113, which contains an unspecified LEDIt carries and is also equipped with terminal blocks 114 for connecting conductors 115. The conductors 115 primarily serve to supply power to the LED, but can also be used to transmit control signals if required.

[0037] 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 heat generated during operation of the LED. Pins 117 are provided for fastening the circuit board 113 to the heat sink 116.

[0038] A retaining element 118 receives the heat sink 116 with the circuit board 113 mounted on it at its end facing away from the mounting sleeve 101 via a retaining arm 119. The heat sink 116 is preferably snapped onto the retaining arms 119. It can also be secured to the retaining element 118 by a locking element 120, for example in the form of a screw.

[0039] In the embodiment shown here, the retaining element 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 supply. The optical element 121 is arranged in a retaining ring 122. This retaining ring 122 ensures the correct distance between the optical element 121 and the LED. Furthermore, the retaining ring 122 can also serve as a reflector to direct stray light emitted by the LED to the optical element 121 and thus make it available for illuminating the cooking chamber.

[0040] The retaining element 118 is formed by several ring discs 123 spaced longitudinally along the sleeve. These ring discs 123 each form a heat shield to dampen radiant heat radiating from the cooking chamber through the mounting sleeve 101 towards the light source 112. Furthermore, the radial gaps 124 between the ring discs 123 allow an airflow to pass through, which serves to dissipate heat and thus cool and protect the LED light source 112.

[0041] Finally, the oven light 100 includes a microwave trap in the form of a grid-like locking element 125. This element is designed as an essentially circular, perforated disc. Centering means 126, in the form of axially oriented spring ribs projecting radially outwards, extend from the edges of the disc. During installation of the locking element 125 in the mounting sleeve 101, these ribs bear against the circumferential wall 110 on the inside and center the locking element 125 within the mounting sleeve 101.

[0042] Finally, it should be noted that the retaining part 118 forms plug-in receptacles 127 which are provided for receiving the retaining tabs 111, each plug-in receptacle 127 having a locking lug 128 which engages securely in a locking opening of the retaining tab 111 (not shown).

[0043] The perspective view according to Fig. 1bThe figure shows the cooking appliance light 100 described above in its assembled form. It clearly shows how the cover glass 105 is fixed to the mounting sleeve 101. The ring element 106 is positioned between the cover glass 105 and the mounting flange 102.

[0044] The retaining part 118 carries on its side facing away from the cover glass 105 the heat sink 116, which is equipped with the circuit board 113 and has its retaining arms 119.

[0045] The retaining tabs 111 are inserted into the plug receptacle 127 of the retaining part 118 and thus secure the retaining part 118 to the mounting sleeve 101.

[0046] The pre-assembled cooking appliance light 100 can then be fully assembled in the cooking appliance by the cooking appliance manufacturer.

[0047] Fig. 2Figure 1 shows a top view of the oven light 100, with the cover glass 105 obscured. The ring-shaped locking element 125, in the form of a perforated disc, is visible, positioned centrally within the sleeve 104. It is also evident that this centering ensures that the required clearance for assembly, in the form of circumferential gap sections 129, is approximately uniform all around. The radial depth of each circumferential gap section 129 between the circumferential wall 110 of the mounting sleeve 101 and the locking element 125 is no greater than the diameter of the perforation holes in the locking element 125. This ensures that no microwave radiation can escape through the mounting sleeve 101 in the axial direction.

[0048] Fig. 3Figure 1 shows another side view of the cooking appliance light 100. This shows again how the thread sections 109 are embossed into the circumferential wall 110 of the mounting sleeve 101. It is also visible that the retaining tabs 111 of the mounting sleeve 101 are inserted into the plug-in receptacles 127 of the retaining part 118.

[0049] Fig. 4 shows a sectional view of the cooking appliance light 100 along the section line IV-IV in Fig. 3This illustration initially shows the interaction of the threaded sections 109 on the side of the mounting sleeve 101 and the external thread 107 of the cover glass 105. However, particular attention should be paid to the locking element 125. This drawing shows that the locking element 125 rests on the retaining part 118, in such a way that the centering means 126 also serve to hold the locking element 125 on the retaining part 118, preferably snapping it into place. This offers initial assembly advantages. The locking element 125, resting on the retaining part 118, can thus be secured to the mounting sleeve 101 together with the retaining part 118. The retaining part 118, with its end section near the cover glass 105, extends at least minimally into the interior of the sleeve 104. In this way, the locking element 125 is inserted strictly horizontally or perpendicular to the longitudinal axis of the sleeve into the interior of the sleeve 104, so that a correct mounting position is ensured.

[0050] It is also visible here how the heat sink 116 is secured in the retaining part 118 by the locking element 120. The retaining part 118 forms a locking boss 130 for this purpose, which extends in the opposite direction to the cover glass 105. It is also evident how the heat sink 116 is engaged from behind by a detent projection 131 of a retaining arm 119.

[0051] It is also visible that the locking lugs 128 of the plug receptacles 127 engage securely in the retaining tabs 111 of the mounting sleeve 101.

[0052] Finally, it can be seen how the optical element 121 is seated in the retaining ring 122 and how the retaining ring 122 positions the optical element 121 at the correct distance from the circuit board 113 and the light source 112. This illustration also clearly shows that, with appropriate mirroring of the inner surfaces 132, the retaining ring 122 can serve as a reflector.

[0053] Fig. 5This shows another side view of the cooking appliance light 100. This differs from the illustration shown in the previous image. Fig. 3 rotated approximately 90 degrees.

[0054] The Figures 5 and 6 show the to the Figures 3 and 4 The facts already described are viewed from a correspondingly altered perspective. In particular, one can... Fig. 6 Remove the mounting of the circuit board 113 by means of the locking pins 117 on the heat sink 116.

[0055] The Figures 7 to 13 Figure 200 shows a cooking appliance light as a second embodiment of the invention, provided with the reference numeral 200.

[0056] The second cooking appliance light 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.

[0057] The cooking appliance light 200 is essentially identical in its components or has the same effect as the cooking appliance light 100 of the first embodiment, which is briefly described below.

[0058] 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 circumferential 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 a longitudinal axial direction, with the retaining tabs 211 being angled slightly radially inwards.

[0059] A light source 212 in the form of a circuit board 213 with an attached and not specifically designated LEDThis feature is also present in the second embodiment of the kitchen appliance light 200. Here too, the circuit board 213 has terminal blocks 214, which serve to connect conductors 215. These conductors 215 serve, firstly, to supply electricity to the light source 212, but can also be used to transmit control signals if required.

[0060] The circuit board 213 is also attached here to a counter bearing 216 in the form of a heat sink by means of a dowel pin 217.

[0061] The heat sink 216 itself is arranged at the end of a retaining part 218 facing away from the cover glass 205 and is secured by retaining arms 219 located there. The retaining arms 219 can also snap onto the heat sink 216. However, it is also possible here, and specifically provided for in the second embodiment, to use a locking element 220 for additional anchoring of the heat sink 216 to the retaining part 218.

[0062] In the second embodiment of the cooking appliance light 200, an optical element 221 is also arranged in the beam path of the light imitated by the light source 212 in order to direct this light while maximizing luminous efficacy for optimizing the illumination of the cooking chamber, for example, by focusing it. 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. The retaining ring 222 can also be designed as a reflector, reflecting stray light towards the optical element 221 and thus towards the cooking chamber.

[0063] In the second embodiment of the invention, the retaining element 218 also has several ring discs 223, which are arranged axially apart from one another, so that spaces 224 are formed between the ring discs 223. The central annular space of each retaining ring 223 allows the LEDThe simulated light passed through the retaining part 218 towards the cooking chamber.

[0064] The retaining part 218 has plug-in receptacles 227, which are also provided with the optional locking lug 228 and serve to receive the retaining tabs 211. In the illustrations of the second embodiment, it can be seen that the retaining tabs 211 are provided with a locking opening 233, into which the locking lugs 228 serve to secure the retaining part 218 to the mounting sleeve 201.

[0065] Figure 7Figure 1 also shows a disc-shaped locking element 225, which serves as a microwave trap and is perforated by means of numerous small openings to allow light to pass through. In this embodiment as well, the locking element 225 has centering means 226. These are again formed as essentially axially oriented spring tabs. In contrast to the first embodiment, the locking element 225 here has, by way of example, a mounting tab 234 to which a flat connector 235 can be electrically attached. The flat connector 234 can, for example, be welded, soldered, or mechanically fixed to the mounting tab. Using this flat connector 235, it is possible to establish an electrically conductive connection via a grounding cable to a counterpart connector on the side of the cooking chamber wall in order to neutralize the energy of microwaves incident on the locking element 225.

[0066] However, there are noticeable deviations in detail, particularly on the side of the mounting sleeve 201. The mounting sleeve 201 has locking wings 236 that are radially notched outwards from the circumferential wall 210. When mounting the oven light 200 in the cutout of an oven wall, it is inserted from the oven wall outwards into the oven wall recess. The insertion movement ends when the mounting flange 202 rests against the inside of the oven wall. During the insertion process, the locking wings 236 slide off the cutout and, after passing through the cutout, engage the oven wall itself, so that the oven wall is positioned between the locking wings 236 and the mounting flange 202, thus securely holding the oven light 200.

[0067] A coding ridge 237 formed by the circumferential wall 210 allows for a secure and defined relative alignment of the oven light 200 to the wall cutout. In the second embodiment of the invention, the oven light 200, an inner sleeve 238 is also provided. This inner sleeve 238 has a smaller diameter than the mounting sleeve 201. The inner sleeve 238 has a sleeve wall 239. Threaded sections 209 are embossed 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 it.

[0068] The inner sleeve 238 has a mounting flange 240 formed at its end near the cover glass 205. The mounting flange 240 covers an annular space 244 between the inner sleeve 238 and the mounting sleeve 201, thus reliably preventing microwave radiation from entering the annular space 244.

[0069] To anchor the inner sleeve 238 in the mounting sleeve 201, the inner sleeve 238 has locking tabs 241. These are projected from the sleeve wall 239. The locking tabs 241 are attached to the sleeve wall 239 at their end furthest from the cover glass 205, whereas the cover glass 205 near the end of the locking tabs 241 is free and projects radially outwards.

[0070] Figure 8 Figure 1 shows a perspective view of the cooking appliance light 200 in its assembled form. The cover glass 205 is screwed into the inner sleeve 238, with the external thread 207 engaging in the thread sections 209 of the inner sleeve 238.

[0071] The locking element 225 is arranged in the mounting sleeve 201 in a manner to be described later. The retaining part 218 is also connected to the mounting sleeve 201 by means of the retaining tabs 211 engaging in the plug-in receptacles 227 of the retaining part 218. Since, as already explained, the assembly consisting of the retaining part 218, the light source 212, and the heat sink 216 is identical to the first embodiment, reference is made here to the previous descriptions.

[0072] Figure 8 In contrast to the first embodiment, the aforementioned flat plug 235, which in this embodiment is electrically connected to the locking element 225, is led out of the mounting sleeve 201 far from the cover glass in order to be able to attach an electrical conductor.

[0073] Figure 8Furthermore, it shows how the mounting sleeve 201 and the inner sleeve 238 interact with regard to the locking wings 236. This has already been mentioned above and is explained below. Figure 8 It is also evident that openings 242 are created in the circumferential wall 210 of the mounting sleeve 201 when the locking wings 236 are extended. 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.

[0074] Figure 9 The second embodiment is analogous to Figure 2 of the first embodiment. Here too, a top view of the cooking appliance light 200 is shown, with essentially identical circumstances to the Figure 2or as shown in the first embodiment. The locking element 225, arranged in the inner sleeve chamber 243, is visible in the form of a disc perforated by a multitude of holes. In this view, the support flange 240 of the inner sleeve 238, which covers the mounting flange 202 of the mounting sleeve 201, is particularly visible. Furthermore, the function of the centering means 226, which hold the locking element 225 centered in the inner sleeve chamber 243, is evident. In this way, the fit or assembly clearance required for mounting the locking element and the resulting circumferential gap sections 229 are reduced to a dimension no greater than the diameter of the perforation holes. This reliably prevents microwave radiation from escaping axially from the inner sleeve chamber 243 into the external environment through the circumferential gap sections 229.

[0075] The side view of the cooking appliance light 200 of the second embodiment in Figure 10 has its counterpart in Figure 3 of the first embodiment. In addition to what has been described there, it is shown here in particular how the flat connector 235 is led out of the inner space 204 of the mounting sleeve 201. The locking effect of the detent 228 in the plug receptacle 227 for securing the retaining arm 229 is also clearly visible here.

[0076] Figure 11 shows a section view according to section line XI in Figure 10 The basic structure of the 200 kitchen appliance light in its assembled form can be seen here. This is largely identical to the first embodiment and there the Figure 4 , insofar as it concerns the components below the mounting sleeve 201, i.e., the components located at the end of the mounting sleeve 201 furthest from the cover glass. In this respect, reference is made to the Figure 4 said references.

[0077] Out of Figure 11The interaction between mounting sleeve 201 and inner sleeve 238 becomes particularly evident here. It can be seen that the inner sleeve 238 is arranged and held concentrically within the inner space 204 of the mounting sleeve 201. The support flange 240 covers the mounting flange 202 and thus seals the annular space 244, which is necessarily present between mounting sleeve 201 and inner sleeve 238, from the cooking chamber (not shown). This reliably prevents microwave radiation from penetrating this annular space 244 and thus any possible axial transmission of microwave radiation into the external environment.

[0078] It is not strictly necessary, but advantageous if – as here – the inner sleeve 238 snaps into the mounting sleeve 201. This significantly simplifies the arrangement of the inner sleeve 238 in the mounting sleeve 201. The locking tabs 241 described above serve this purpose.

[0079] Since the locking tabs 241, projecting from the sleeve wall 239, also create openings in the sleeve wall 239, the specific arrangement of the locking tabs 241 was initially chosen, with their cover glass located at the end furthest from the wall and the cover glass 205 near the projecting end. Incident microwave radiation is thus reflected back towards 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 contact with the mounting sleeve 201. To reliably prevent radial emission of microwave radiation from the assembly of mounting sleeve 201 and inner sleeve 238, the openings in the sleeve wall 239 are in any case sufficiently offset from the openings in the circumferential wall 210 of the mounting sleeve 201.

[0080] It can be seen in Figure 11furthermore, how the cover glass 205 is held in the inner sleeve 238, wherein this is done in an analogous manner to the arrangement of the cover glass 105 in the mounting sleeve 101 of the first embodiment.

[0081] Figure 12 This shows a second side view of the 200-series kitchen appliance light. The counterpart to Figure 12 is the Figure 5 Regarding the first embodiment: In this respect, what is stated there applies essentially identically or analogously to... Figure 12 Therefore, reference is made to the preceding explanations. Regarding the specific components of the second embodiment, reference is made to the description at Figure 10 referred.

[0082] Figure 13 shows a section 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 are shown according to the second embodiment, the following applies: Figure 6 executed.

[0083] However, in particular – also in conjunction with Figure 11 - Here, the arrangement of the locking element 225 of the oven light 200 should be noted. The locking element 225 of the oven light 200 is located at the end of the inner sleeve 238 furthest from the cover glass, which thus forms an end stop for the locking element 225. The locking element 225 is mounted between the end of the inner sleeve 238 furthest from the cover glass 205 and the end of the retaining part 218 closest to the cover glass 205.

[0084] Unlike the first embodiment, the centering means 226 do not bear against the inner circumference of the sleeve wall 239 or the circumferential wall 210. Instead, the centering means 226 sit on the outer circumference of the sleeve wall 239 of the inner sleeve 238. They hold the locking element 225 there at least by friction; a positive locking is also conceivable.

[0085] While the first embodiment, the kitchen appliance light 100, proposed pre-assembling the locking element 125 on the retaining part 118, the second embodiment, the kitchen appliance light 200, proposes pre-assembling the locking element 225 on the inner sleeve 238. Thus, for light assembly, the inner sleeve 238, including the locking element 225, is inserted into the mounting sleeve 201. The retaining part 218 is then placed onto the end of the mounting sleeve 201 furthest from the cover glass 205, so that the locking element 225 is securely positioned between the retaining part 218 and the inner sleeve 238.

[0086] The second embodiment can dispense with an inner sleeve 238 if the wall gaps created by extending the locking wings 236 are kept sufficiently narrow. In this case, the escape of microwave radiation can be reliably prevented even without an inner sleeve 238. The fixing of the retaining part 218, the locking element 225, and the cover glass 205 is then carried out analogously to the first embodiment.

[0087] In summary, two exemplary embodiments of cooking appliance lights 100, 200 were presented, which offer the following essential advantages for cooking appliance manufacturers.

[0088] Manufacturers of cooking appliances can use the lights 100, 200 for microwave ovens or combination ovens with a microwave cooking function, as an effective locking element and a clever light design reliably prevent microwave radiation from escaping the cooking chamber. In the second embodiment, the mounting flange 240 of the inner sleeve 238 also contributes to this. In every case, a secure and centered mounting of the locking element 125, 225 in the cooking appliance light 100, 200 is ensured.

[0089] The 100, 200 oven light is designed for installation in oven wall cutouts for conventional light sources, but it itself uses an LED light source 112, 212. In this respect, the 100, 200 oven lights adapt existing component structures to modern LED light sources. Advantageous fastening techniques are used for anchoring the 100, 200 oven light, techniques previously only employed in oven lights with conventional light sources 112, 212.

[0090] Nevertheless, both embodiments of the oven lights 100, 200 also manage to meet the requirements of LED light sources, in particular to reliably protect them from the potentially harmful heat radiation from the oven cavity. For this purpose, the LED light source 112, 212 is arranged outside the mounting sleeve 201, specifically at its end furthest from the cover glass 105, 205. This not only distances the LED light source 112, 212 from the oven cavity, but also positions the LED light source 112, 212 outside the sleeve body, where heat could potentially accumulate. The use of a retaining element 118, 218 enables the light sources 112, 212 to be positioned outside the mounting sleeve 201.

[0091] The applicant uses a special holding element which, in addition to the advantageous arrangement of the light sources 112, 212 outside the mounting sleeve 201, also ensures advantageous ventilation through spaces 224, 124 and protection against heat radiation via ring discs 123, 223. REFERENCE MARK LIST 100 Cooking appliance light 128 Rastnose 101 Mounting sleeve 129 Circumferential gap section 102 Mounting flange 130 Security Dome 103 Through-holes 131 Rast ledge 104 The inside of the casing 132 Inner surface 105 Cover glass 106 Ring element 107 external thread 108 threaded neck 109 Thread section 110 Perimeter wall v. 101 111 Retaining tab 112 light bulbs 113 Circuit board 114 Terminal block 115 Connection conductor 116 Counter bearing / heat sink 117 Locking pins 118 Retaining part 119 Support arm 120 Safety element 121 Optical element 122 retaining ring 123 ring disc 124 space 125 Locking element 126 Centering device 127 Plug socket REFERENCE MARK LIST 200 Cooking appliance light 228 Rastnose 201 Mounting sleeve 229 Circumferential gap section 202 Mounting flange 230 Security Dome 204 The inside of the casing 231 Rast ledge 205 Cover glass 232 Inner surface 207 external thread 233 Resting opening v. 211 208 threaded neck 234 Mounting tab 209 Thread section 235 Flat connectors 210 Perimeter wall v. 201 236 Rastflügel v. 201 211 Retaining tab 237 Coding bridge 212 light bulbs 238 Inner sleeve 213 Circuit board 239 Sleeve wall 214 Terminal block 240 Mounting flange 215 Connection conductor 241 Locking flap 216 Counter bearing / heat sink 242 Breakthrough 217 Locking pins 243 Inner sleeve space 218 Retaining part 244 annular space 219 Support arm 220 Safety element 221 Optical element 222 retaining ring 223 ring disc 224 space 225 Locking element 226 Centering device 227 Plug socket

Claims

1. 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 wall of the cooking appliance, - with an LED light source (212) arranged on the mounting sleeve (201), the light from which passes through a cylindrical space of the mounting sleeve (201) into a cooking chamber of the cooking appliance, - with a microwave trap in the form of a grid-like barrier element (225), which prevents microwave radiation from passing from the cooking chamber through the cylindrical space of the mounting sleeve (201) into an external area of the cooking appliance, - with a translucent cover (205) which is arranged at one axial end on the mounting sleeve (201) and which prevents cooking vapours from entering the cylindrical space of the mounting sleeve (201), characterised in that the mounting sleeve (201) comprises a mounting flange (202) and protrusions extending from its circumferential wall locking tabs (236) for locking onto a cooking chamber wall.

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

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

4. Cooking appliance light (200) according to any one of claims 1 to 3, characterised in that the locking element (215) comprises centring means (216) which align the locking element (225) centrally within the mounting sleeve (201).

5. Cooking appliance light (200) according to claim 4, characterised in that the centring means (216) are designed as centring springs arranged on the outer circumference of the locking element (225) and integrally connected to the locking element (225) by material bonding.

6. Cooking appliance light (200) according to any of the preceding claims, characterised 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, characterised in that the mounting sleeve (201) is provided with an inner sleeve (238) which covers the openings in the circumferential wall of the mounting sleeve (201) caused by the extension of the locking wings (236).

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

9. Cooking appliance light (200) according to claim 8, characterised in that the locking tabs (241) have a free locking end facing towards the translucent cover (205) and a cover (205), by means of which they are held on the inner sleeve circumferential wall (239).

10. Cooking appliance light (200) according to claims 8 and 9, characterised in that the locking tabs (241) of the inner sleeve (238) and the locking wings (236) of the mounting sleeve (201) are arranged with a circumferential offset relative to one another in order to prevent the circumferential wall openings of the inner sleeve (238) and the mounting sleeve (201) from aligning.

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

12. Cooking appliance light (200) according to claims 6 and 11, characterised in that the centring springs engage the peripheral wall of the inner sleeve (239).

13. Cooking appliance light (200) according to claims 1 and 7, characterised in that the inner sleeve (238) is attached at its end opposite the translucent 20 cover (205), which rests on the mounting flange (202).