Light-emitting glazing assembly, door and piece of refrigerating equipment comprising this assembly and manufacture thereof

Abstract

A light-emitting glazed door for a piece of refrigerating equipment, includes first and second glazing units forming an insulating glazing unit, the glazing units being spaced apart by a mastic seal; a peripheral light source with a source carrier; a system for extracting guided light in order to form at least one luminous zone; and a fastening part, namely a profile, making direct adhesive contact with the mastic seal.

Claims

1. A light-emitting glazing assembly for a door for a piece of refrigerating equipment comprising an insulating glazing unit having an external main face and an internal main face, the insulating glazing unit comprising: a first glazing unit comprising the external main face and a first edge face, said first glazing unit including a first glass sheet having a first main face and a second main face; a second glazing unit comprising the internal main face and a second edge face, said second glazing unit including a second glass sheet, having a third main face and a fourth main face, the second and third main faces being spaced apart by a first gas-filled cavity; on a periphery of the second and third main faces, a first polymeric seal forming a frame; a light source external to the insulating glazing unit, said source being chosen from: light-emitting diodes each comprising a semiconductor chip having an emissive face, and an optical fiber having a lateral portion forming an emissive zone, said light source external to the insulating glazing unit being optically coupled to an injection edge face that corresponds to the first edge face, in order to propagate light by total internal reflection in a thickness of the first glazing unit, which then plays the role of a light guide; a source carrier bearing the light source and not extending beyond the first edge face in a direction of the external main face and, which, for said light source being the light-emitting diodes, is a printed circuit board; and a light extracting device configured to extract guided light, associated with the first glazing unit, in order to form at least one luminous zone; a fastening part that makes direct adhesive contact with the first polymeric seal, the fastening part adjacent to the injection edge face, and the fastening part being a profile placed along the periphery of the injection edge face; and a bottom part facing and spaced apart from the injection edge face, the light source being housed between the bottom part and the injection edge face.

2. The light-emitting glazing assembly as claimed in claim 1, wherein the fastening part comprises one or more portions that are spaced apart and that make direct adhesive contact with the first polymeric seal along the injection edge face.

3. The light-emitting glazing assembly as claimed in claim 1, wherein the fastening part is made of metal and does not make contact both with the first glazing unit and the second glazing unit.

4. The light-emitting glazing assembly as claimed in claim 1, wherein the first polymeric seal is present between the fastening part and the second main face or wherein the fastening part is adhesively bonded by adhesive bonding to the second main face and/or to an insert between the second main face and the third main face.

5. The light-emitting glazing assembly as claimed in claim 1, wherein the bottom part is against or securely fastened to the fastening part or is against or securely fastened to the second glazing unit.

6. The light-emitting glazing assembly as claimed in claim 1, wherein the bottom part extends the fastening part, the bottom and fastening parts forming a part of unitary construction.

7. The light-emitting glazing assembly as claimed in claim 1, wherein the second edge face extends beyond the injection edge face so that the second glazing unit forms a protrusion that protrudes past the source carrier or the optical fiber directly on the bottom part, said protrusion being on the opposite side to the injection edge face, and the source carrier optionally makes direct adhesive contact with the first polymeric seal.

8. The light-emitting glazing assembly as claimed in claim 1, wherein a cap closes a cavity bounded by the injection edge face, the fastening part and the bottom part, said cavity housing the light source and the source carrier, said cap extending along a longitudinal direction of the injection edge face.

9. The light-emitting glazing assembly as claimed in claim 8, wherein the cavity opens laterally.

10. The light-emitting glazing assembly as claimed in claim 8, wherein the cap has a portion against or adhesively bonded to the external main face, the portion having a thickness of at most 1.5 mm.

11. The light-emitting glazing assembly as claimed in claim 8, wherein the cap has: a portion adhesively bonded to the external main face, the portion having a thickness of at most 1 mm, wherein the cap extends to form the bottom part; and wherein the bottom part is against or securely fastened to the fastening part or wherein the bottom part is spaced apart from the fastening part and extends in order to be against or adhesively bonded to the second glazing unit.

12. The light-emitting glazing assembly as claimed in claim 8, wherein the cap extends the bottom part which is then bent at an angle, an assembly formed by the fastening part, the bottom part and the cap being a part of unitary construction, a portion of the cap being against or adhesively bonded to the external main face.

13. The light-emitting glazing assembly as claimed in claim 8, wherein the light source and the source carrier do not make adhesive contact in the cavity.

14. The light-emitting glazing assembly as claimed in claim 1, further comprising a framing profile comprising a framing jamb facing the injection edge face and positioned on at least the internal or the external main face, the bottom part being between the framing jamb and the injection edge face and fastened to the insulating glazing unit, no adhesive being present in the space between the light source and the injection edge face.

15. The light-emitting glazing assembly as claimed in claim 14, wherein the framing jamb comprises: a first portion facing the injection edge face and the bottom part and extending onto the external face, adhesively bonded to the external face or to the bottom part; and a second portion, securely fastened via adhesive bonding to the first portion, facing the second edge face adjacent to the injection edge face and optionally extending onto the internal face, adhesively bonded to the internal face or to the fastening part; one of the first and second portions being made of metal, the other being thermally insulating.

16. The light-emitting glazing assembly as claimed in claim 15, wherein the second edge face extends beyond the injection edge face and so that the second glazing unit forms a protrusion that protrudes past the source carrier or the optical fiber directly on the bottom part, said protrusion being on the opposite side to the injection edge face, the framing jamb does not comprise a lip on the internal main face and the internal main face comprises a masking arrangement for masking the first polymeric seal.

17. The light-emitting glazing assembly as claimed in claim 14, wherein the framing profile comprises a void capped by an impermeable apertured cover with a sealing device, the cover and/or the sealing device being removable and forming an access flap allowing access to the light source.

18. The light-emitting glazing assembly as claimed in claim 17, wherein the cover is a part fastened to the framing profile and furthermore comprising a pivot.

19. The light-emitting glazing assembly as claimed in claim 17, wherein the framing profile is adhesively bonded by an adhesive to the insulating glazing unit and the adhesive is absent between the access flap and a lateral end closest to an open cavity closable by a cap and bounded by the injection edge face, the fastening part and the bottom part, said cavity housing the light source and the source carrier, said cap extending along a longitudinal direction of the injection edge face.

20. A door for a piece of refrigerating equipment comprising a light-emitting glazing assembly as claimed in claim 1.

21. A refrigerated enclosure comprising a door for a piece of refrigerating equipment as claimed in claim 1.

22. A process for manufacturing a light-emitting glazing assembly as claimed in claim 1, comprising fastening the fastening part to the first polymeric seal while the first polymeric seal is still in the adhesive state or adhesively bonding the fastening part to the second face and/or to an insert between the second main face and the third main face and the first polymeric seal is applied, the first polymeric seal then making contact with the fastening part.

23. The process for manufacturing a light-emitting glazing assembly as claimed in claim 22, further comprising, after the fastening part has been fastened to the first polymeric seal while the first polymeric seal is still in the adhesive state: forming a cavity bounded by the injection edge face, the fastening part and the bottom part forming a lateral projection of the fastening part, said cavity opening laterally; housing the light source and the source carrier in the cavity; closing the cavity is closed with a cap in a longitudinal direction of the injection edge face, the cavity remaining open laterally; and mounting a framing profile on the insulating glazing unit by adhesive bonding, with a mounting adhesive or with a double-sided adhesive tape, said framing profile including a framing jamb facing the injection edge face.

24. The process for manufacturing a light-emitting glazing assembly as claimed in claim 22, further comprising: placing a shim against the injection edge face, the shim being longer than the injection edge face; placing at least one part forming a cap, bottom part and fastening part, around the shim and adhesively fastened to the external main face and to the second main face and/or insert; and applying said first polymeric seal; mounting a framing profile on the insulating glazing unit by adhesive bonding, with a mounting adhesive or with a double-sided adhesive tape, said framing profile including a framing jamb facing the injection edge face and adhesively bonded to the bottom part; removing the shim thereby leaving a laterally open cavity; and placing the light source and the source carrier in the cavity.

25. The process for manufacturing a light-emitting glazing assembly as claimed in claim 23, wherein the mounting adhesive is absent at least between the framing jamb and a lateral end of the cavity and, the framing profile comprising a void capped by an impermeable cover and with a sealing device, the cover and/or the sealing device being removable and forming an access flap allowing access to the light source, the method further comprising removing the cover and/or the sealing device and removing the light source via the lateral end of the open cavity.

26. The light-emitting glazing assembly as claimed in claim 1, wherein the first main face is the external main face or the first glass sheet is laminated to another glass sheet or the first glazing unit is a central pane of a triple glazing unit, and wherein the fourth main face is the internal main face or the second glass sheet is laminated to another glass sheet or a third glass sheet is spaced apart from the second glass sheet by a second gas-filled cavity.

27. The light-emitting glazing assembly as claimed in claim 1, wherein the source carrier for the optical fiber is the bottom part or the fastening part directly.

Description

(1) Other details and advantageous features of the invention will become apparent from reading the examples of glazing units according to the invention, which are illustrated by the following figures:

(2) FIG. 1a shows a light-emitting refrigerated enclosure;

(3) FIGS. 1, 1, 1bis, 2, 2, 2, 3, 3a, 3b, 3c, 3d, 3, 5a to 5g, 6, 7, 8, 9, 10 and 11 show schematic and partial cross-sectional views of light-emitting glazed doors for pieces of refrigerating equipment in various embodiments of the invention;

(4) FIG. 1 is a detail view of the cap used to close the cavity used in FIG. 1 longitudinally fastened in place;

(5) FIG. 4a shows a schematic front view of a light-emitting glazed door for a piece of refrigerating equipment with an access flap allowing access to the light source; and

(6) FIGS. 4b and 4c show the access flap.

(7) It will be noted that for the sake of clarity the various elements of the objects shown are not necessarily to scale.

(8) FIG. 1a shows a schematic view of a refrigerated enclosure 1000 in a first embodiment of the invention.

(9) This chamber is here a cabinet comprising shelves 101 (dotted lines) and two doors each comprising a light-emitting insulating glazing unit comprising an external main face 11 on the user side (visible here) and an internal main face (shelf side) and an edge with four edge faces. The longitudinal edge faces of the edge are vertical. A framing profile is a frame fastened to the periphery of the rectangular insulating glazing unit (double glazing unit or even a triple glazing unit). The frame comprises four jambs that abut at the corners of the insulating glazing unit. The two longitudinal jambs 7a and 7b are identical and vertical. The two lateral jambs 7c and 7d are horizontal. Two light sources (represented by dotted lines because masked) are inserted between the first longitudinal jamb 7a and a first longitudinal edge face 13a and between the second longitudinal jamb 7b and a second longitudinal edge face, respectively.

(10) Each door opens outward by virtue of a pivot 7p on the top and bottom jambs.

(11) FIG. 1 shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 100 in a first embodiment of the invention.

(12) This light-emitting glazed door 100 comprises an insulating glazing unit having an external main face 11 on the user side and an internal main face (12 shelf side), comprising: a first glazing unit comprising the external face and a first edge formed from four edge faces including a first longitudinal edge face 13a, said first glazing unit here being a single glazing unit comprising a first glass sheet 1 having a first main face 11 and a second main face 12, the first face therefore being the external face, for example a sheet of extra-clear soda-lime-silica glass of thickness equal to at least 3.8 mm (4 mm or 6 mm as standard) is used; a second glazing unit comprising the internal face 12 and a second edge formed from four edge faces including a second longitudinal edge face 13a, said second glazing unit here being a single glazing unit comprising a second glass sheet 1 having a third face 11 and a fourth main face 12 that here is the internal face the second and third faces being spaced apart by a first gas-filled cavity; and on the periphery of the second and third faces a polymeric first seal 3 forming a frame, and an insert forming a spacer 3.

(13) Conventionally, the insert 3 is fastened to the interior of the glazing unit by its lateral faces to the faces 12, 11 of the glass sheets by butyl rubber 81 that also plays the role of sealing the interior of the insulating glazing unit from water vapor. The insert 3 is placed set back into the interior of the glazing unit and in proximity to the longitudinal edge faces of the edges of said glass sheets, so as to provide a peripheral groove into which a first polymeric seal 3 is injected, this polymeric seal being made of a mastic, such as a polysulfide or polyurethane mastic. The mastic confirms the mechanical assembly of the two glass sheets 1, 1 and creates a seal to solvents or to liquid water.

(14) A light source 2 is external to the insulating glazing unit. Light-emitting diodes 2 are preferred each comprising a semiconductor chip with an emissive face 21.

(15) The diodes are optically coupled to the first longitudinal edge face 13a, which is referred to as the injection edge face, in order to propagate light by total internal reflection in the thickness of the first glazing unit, which then plays the role of a light guide. The diodes are on a printed circuit board or PCB carrier 20 and extend facing the first edge face (the injection edge face) 13a.

(16) The PCB carrier 20 is of unitary construction, thin, of thickness equal to 1.8 mm, and of 5 mm width. It is a rectangular bar (strip), i.e. a bar of rectangular cross section, and is of FR-4 type or made of metal. The PCB carrier 20 does not extend beyond the first edge in the direction of the external face and here is on a metal in order to dissipate heat.

(17) The light-emitting diodes each comprise an emissive chip able to emit radiation at one or more wavelengths in the visible, said radiation being guided by the first sheet 1. The diodes are small, typically being a few mm or less in size, and conventionally have a thickness of at most 2 mm, especially being about 221 mm in size. The diodes optionally comprise optics (a lens) and are either not pre-encapsulated, in order to decrease their bulk as much as possible, or are encapsulated, for example in a single resin. The emissive faces are preferably spaced apart from the injection edge face and do not make adhesive contact thereto, but may be pre-encapsulated and adhesively bonded with an adhesive or double-sided optical tape, preferably of at most 0.5 mm in thickness. It is possible to choose diodes emitting light that is white or colored.

(18) The distance between the emissive face and the injection edge is as small as possible, for example 5 mm and better still 0.2 to 2 mm. The main emission direction is the direction perpendicular to the face of a semiconductor chip, which may for example have a multiple quantum well (MQW) active layer fabricated in AlInGaP or another semiconductor technology. The emission cone is a Lambertian cone of 60. In the configuration illustrated, the emissive face 21 of the chip is perpendicular to the PCB 20.

(19) The light 12 is extracted for example via the external face 11. The extraction 14 is achieved by any scattering means on the surface: sandblasting, acid etching, scattering layer such as a white enamel, etc. or as a variant by laser etching in the first sheet 1. The luminous pattern may have a commercial purpose, form a sign, etc.

(20) The second glazing unit 1 comprises a first layer 15 providing a thermal function, on the third face 11.

(21) The PCB carrier 20 and the light source 2 are located in a cavity bounded by the injection edge face 13a, a part referred to as the fastening part 4 and a bottom part 5 and closed by a longitudinal cap 6. This elongate cavity opens laterally.

(22) The fastening part 4 is a metal profile, here anextruded or bentplate made of aluminum of thickness Ep4 of 1.5 mm forming a hollow part of rectangular cross section of thickness E4 of 7 mm. This profile 4 is mounted on the mastic 3 while it is still in its adhesive state (the glazing unit generally being horizontal), so that the external edge face of the mastic 31 makes direct adhesive contact with the fastening part, which may typically penetrate by 1 to 3 mm or even more into the mastic 3. The protruding thickness E4 is therefore for example 5 mm. The fastening part 4 does not touch both the first and second glazing units in order not to form a thermal bridge. It may especially be spaced apart from the second face 12 by 2 mm so that the source carrier does not extend beyond the external face.

(23) The fastening part 4 may protect the light source 2 from misalignment and/or from being crushed against the injection edge faceprotrusion of its planar back portion 42, on the side opposite to the injection edge face.

(24) The bottom part 5 is for its part facing and spaced apart from the injection edge face; it is here a question of a lateral projection of the fastening part, and therefore of a rectangular bar of thickness Ep5 of 1.5 mm that extends the planar back wall 42. The aluminum sheet folded or extruded to form fastening part and bottom part. The dimensions of the fastening part and of the bottom part are shown in FIG. 1.

(25) The bottom part 5 could even be bent at an angle in the direction of the injection edge face without touching it or so as to touch it (if the fastening part 4 does not touch the second glazing unit, preferably) if the diodes on the PCB carrier are mounted by sliding via the lateral end of the open cavity.

(26) The glazing unit furthermore comprises a cap 6 for closure of the cavity, said closure following the longitudinal direction of the injection edge face 13a.

(27) The cap is a 50 to 100 m-thick adhesive-coated metal foil 6 having a portion 62 adhesively bonded to the external face 11, thereby increasing thickness by a negligible amount of at most 1 mm, and a portion 61 adhesively bonded to the bottom part 5 via its back face.

(28) Mention may be made for example of an aluminum foil adhesively bonded via a double-sided adhesive tape or even a metal tape with an adhesive on its injection-edge face side face. For example, the metal tape (shown in FIG. 1) comprises on this face an adhesive 85 that is covered by a protective film 65 (a lining) except in zones for adhesive bonding to the face 11 and the bottom part 5. It is for example a question of simply cutting the lining sold with the adhesive metal tape.

(29) To insert diodes after the cap has been applied or to change them the cap 6 need not necessarily be demounted because it is possible to insert or remove the diodes on their PCB carrier (or an optical fiber 2 on its carrier 20 as shown in FIG. 1bis) laterally preferably via the top of the door. It is also possible to insert the diodes before the cap has been applied.

(30) Thus, the PCB carrier 20 and the diodes 2 thereon are inserted into the cavity against the bottom part, the carrier 20 making nonadhesive contact with the metal bottom part or the metal fastening part, and it may even not be fastened in any way that could prevent its possible desired removal laterally. Magnetically fastened contact is possible. There is possibly a small space between the diodes and the injection edge face if it does not disrupt optical alignment. The bottom part 5 forms a heat sink.

(31) Forceful fitting and even a tight fit is preferably avoided.

(32) The fastening part/bottom part/cap assembly is associated with the insulating glazing unit without creating a thermal bridge. Optionally, the cap and the fastening part reflect lateral light in order to direct some thereof toward the injection edge face.

(33) The glazed door 100 furthermore comprises a framing profile fastened to the insulating glazing unit, preferably by an adhesive referred to as the mounting adhesive 8, and masking the first seal 3 and the insert 3. It comprises a longitudinal (vertical on the mounted door) framing jamb 7a that extends along the injection edge face 13a, fastened to the insulating glazing unit by the mounting adhesive 8 and that thus, here, makes adhesive contact, via the adhesive, with the fastening part, the bottom part and the cap, the mounting adhesive 8 being absent from the space between the light source and the injection edge face and better still from the space between the end of the laterally (top in the mounted door) open cavity in order to make it accessible (as will be described in more detail below).

(34) The framing jamb 7a is made of two portions in order to prevent the thermal bridge (if metal). A metal first portion 70 is bent at an angle (it is for example a profile of L-shaped cross section) in order to face the injection edge face and extend over the external face and comprises: a portion 71 adhesively bonded to the external face and to a (planar) portion of the cap serving to close the cavity; and a portion 72 facing the edge of the insulating glazing unit (and offset from the edge face 13a of the second glazing unit), adhesively bonded to another portion of the cap 61, to the (back face 51 of the) bottom part and to the (planar back portion 42 of the) fastening part.

(35) The second portion 70 is thermally insulating, preferably polymeric, securely fastened by an adhesive 80 to the first portion and bent at an angle in order to face the second edge 13a adjacent to the injection edge and extend over the internal face 12.

(36) The framing profile is preferably mounted while the unit is horizontal, with the cap for closing the top portion of the cavity.

(37) FIG. 1 shows as a variant, in a detail view, of a door 100, bottom 5 and fastening 4 parts, that are two securely fastened parts, the bottom part 5 being L-shaped and the short portion of the L being adhesively bonded via a double-sided adhesive tape 80 to a lateral portion 40 of the fastening part 4.

(38) FIG. 2 shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 200 in a second embodiment of the invention.

(39) The door 200 differs from the door 100 by the choice of side-emitting diodes each of which has an emissive face parallel to the PCB carrier 20, and therefore by the position of the PCB carrier 20 that here is against the lateral portion 40 of the metal fastening part (bottom of the cavity). The fastening part may touch the face 12 of the first glazing unit (second face) for example in order to center (raise) the diodes on the middle of the guiding pane 1. Otherwise the thickness of the PCB is for example adjusted.

(40) If the fastening part 4 is made of plastic a metal part may be inserted.

(41) FIG. 2 shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 200 in one variant of the second embodiment of the invention.

(42) The door 200 differs from the door 100 by the choice of side-emitting diodes each of which has an emissive face 21 parallel to the PCB carrier 20, and therefore by the position of the PCB carrier 20 that is fastened (laterally demountable or not) to the cap 6 closing the cavity, which here is an extension of the bottom part, which is of unitary construction with the fastening part 4 (metal part such as an aluminum plate) of thickness Ep4 of 1.5 mm or less. The thickness of the cap Ep6 (or even the bottom part 5) may even be at most 1 mm and even at most 0.8 mm in order not to increase thickness on the external face 11. The monolithic part is for example an extrudate. The part forming the cap 6 is adhesively bonded with an adhesive 8 to the external face 11.

(43) Alternatively, the PCB carrier is against the fastening part or side-emitting diodes are again used with the PCB carrier against the fastening part 3. This makes it possible to avoid having to fasten the PCB carrier.

(44) If the thickness of the part of unitary construction forming the bottom part, fastening part and cap is decreased below 1 mm, it is preferable for the second glazing unit to extend beyond the first in order to protect the diodes during their insertion before the framing jamb has been installed, in a first method of manufacture.

(45) FIG. 2 shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 200 in another variant of the second embodiment of the invention.

(46) The door 200 differs from the door 100 by the choice of side-emitting diodes each of which has an emissive face 21 parallel to the PCB carrier 20, and therefore by the position of the PCB carrier 20 that is fastened (laterally demountable or not) to the cap 6 closing the cavity that here is an extension of the bottom part 5. The thickness of the cap Ep6 (or even of the bottom part 5) is at most 1 mm and even at most 0.8 mm in order not to increase thickness on the external face 11. The unitarily constructed cap/bottom part is for example an extrudate.

(47) The bottom part 5 is separate from the fastening part 4 and is fastened by adhesive bonding 8 via a lip to the lateral face 40. The part forming the cap 6 is adhesively bonded with an adhesive 8 to the external face 11.

(48) FIG. 3 shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 300 in a third embodiment of the invention.

(49) The door 300 differs from the door 100 by the dimensions of the second glazing unit 1 the second edge 13a of which extends beyond the injection edge face 13a and protrudes past the source carrier 20, and even the fastening part 4 and the bottom part 5 and the cap on the back face of the bottom part, said protrusion being on the side opposite the injection edge face and protecting the light source especially from misalignment and/or from being crushed against the injection edge face.

(50) The second edge is closer to the polymeric portion of the framing profile 7a.

(51) It may protrude past the back of the fastening part by 1 mm and by at most 3 mm, for example in order not to increase the thickness of the glazing unit.

(52) FIG. 3 shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 300 in a variant of the third embodiment of the invention.

(53) The door 300 differs from the door 300 by the cross section of the framing jamb 7, which does not comprise a lip on the internal face 12 and is especially of L-shaped cross section. Furthermore, the internal face 12 comprises means 17 for masking the first seal 3 and the insert 3, namely an enamel that is sufficiently opaque, for example a black or white enamel of optical density equal to 3.

(54) A hybrid solution consists in a profile 70 that extends only a small distance over the internal face and that does not completely mask the peripheral means 3 and 3, the masking means, consisting of a deposited layer, then ensuring that they are completely masked.

(55) FIG. 3a shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 300a in a variant of the third embodiment of the invention.

(56) The door 300a differs from the door 300 by the cap, which extends to form the bottom part 5, 62 and which comprises a portion 63 that even extends as far as to fasten to the back face 42 of the fastening part.

(57) The PCB carrier is therefore premounted on the back face of the fastening part.

(58) In a demountable variant, the PCB carrier is against the lateral face 42 and the cap makes contact via its edge with the carrier, said contact preferably being nonadhesive. A plastic part bent at a right angle (with an internal reflector) and fastened to the back face 40 of the fastening part is then chosen.

(59) FIG. 3b shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 300b in a variant of the third embodiment of the invention.

(60) The door 300b differs from the preceding door 300a by the cap 6, the metal portion of which, which extends to form the bottom part 5, is spaced apart from the fastening part and from the source carrier that is placed on the lateral portion of the fastening part. This metal sheet makes adhesive contact (via an adhesive 8 or double-sided tape) with a plastic sheet that is fastened by adhesive bonding (adhesive 8 or double-sided tape) to the edge 13a of the second glazing unit 1.

(61) FIG. 3c shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 300b in a variant of the third embodiment of the invention.

(62) The door 300b differs from the preceding door 300a by a plastic part having a reflective film on its surface (except at its ends) bent at a right angle and adhesively bonded to the external face 11, for example by a double-sided tape 8, and into the edge 13a of the second glazing unit 1, for example by a double-sided tape 8.

(63) FIG. 3d shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 300b in a variant of the third embodiment of the invention.

(64) The door 300b differs from the preceding door 300d in that the source carrier makes direct adhesive contact with the mastic 3 as does the metal fastening part, here a profile of rectangular cross section. The cap 6 is an adhesive-coated metal foil starting on the external face 11 and extending as far as the lateral face 43 opposite the face 40. As in FIG. 1, it may comprise a protective film on the cavity side. As a variant, the source carrier is demountable and therefore is not adhesively bonded to the first seal.

(65) FIG. 4a shows a front schematic partial view of a light-emitting glazed door for a piece of refrigerating equipment 100 in a variant of the first embodiment of the invention with an access flap allowing access to the diodes on their PCB carrier.

(66) The framing profile comprises a void 73 capped by an apertured cover part 9 sealed with sealing means such as a seal 91, shown in detail in FIG. 4b (cross-sectional view) and FIG. 4c (top view). The seal 91 is here pierced in the center (orifice 9b), in order to allow electrical power cables 90 to be run to the source, and radially (orifice 9a) to remove the wires. The seal is also removable and forms an access flap allowing access to the source. The cover 9 is for example adhesively bonded to the top (horizontal) framing jamb and may also comprise a pivot 7p.

(67) FIGS. 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5i and 6 show schematic partial cross-sectional views of light-emitting glazed doors for refrigerating equipment in a variant of the first embodiment of the invention.

(68) These doors differ by the cross section of the fastening part (though they all have a lateral portion 40 and a portion 41 making direct adhesive contact with the mastic), which is of open cross section. Some differ in that the lateral portion 40 opposite the portion 40 has been omitted (part 4a in FIG. 5a, part 4d in FIG. 5d, part 4e in FIG. 5e and part 4h in FIG. 5h).

(69) The part 4b is C-shaped (FIG. 5b), the part 4c is in the shape of an H at 90 (FIG. 5c) defining two zones of contact (fastening zones) 41a and 41b with the mastic 3 and comprising a for example planar portion 40 parallel to the portion 40 and closer to the second glazing unit. Likewise, the part 4i is of U-shaped (or C-shaped) cross section and comprises two lateral projections forming two bottom parts 5. Here another PCB carrier and set of diodes face the second glazing unit (cavity closed by another cap 6a). The portion 40 or the portion 40 may almost touch the associated glazing unit but both preferably do not if the part is made of metal in order to avoid creating a thermal bridge.

(70) In FIG. 5d the bottom part 5 is separate from the fastening part (the cap 6 is extended to form the bottom part and is fastened to the fastening part).

(71) In FIG. 5e, the unitarily constructed part forming the bottom part 5 and fastening part 4e forms a T (at 90).

(72) In FIG. 5f, the unitarily constructed part forming the bottom part 5 and fastening part 4f forms an L.

(73) In FIG. 5g, the bottom part and fastening part 4g form an L and the unitarily constructed part forming the bottom part, fastening part and cap forms a C.

(74) In FIG. 5h, the bottom part 5 and the (L-shaped) fastening part 4h form a step.

(75) In FIG. 6, the fastening part 4i is of triangular cross section, and a second glazing unit preferably extends beyond the first in order to provide protection in particular during mounting.

(76) The side-emitting diodes are on the lateral face 40 in FIGS. 5b, 5c, 5d, 5e and 6.

(77) FIG. 7 shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 700 in a variant of the first embodiment of the invention that differs in that the first glazing unit is laminated via a lamination interlayer 18 to another pane comprising the internal face (user side). In this configuration, the fastening part extends across the entire thickness of the first laminated glazing unit.

(78) For example, light extraction may occur via the second face (gas-filled cavity side).

(79) Other diodes have been added on the edge face opposite the injection edge face, with another fastening part, bottom part and cap.

(80) FIG. 8 shows a schematic partial cross-sectional view of a light-emitting glazed door for a piece of refrigerating equipment 800 in one variant of the first embodiment of the invention that differs in that the glazing unit is a triple glazing unit with a second gas-filled cavity and a second mastic seal 3a and insert 3a.

(81) The face 12 is no longer the face closest to the interior of the enclosure. The third glazing unit 1 comprises a layer 15 providing a thermal function (gas-filled cavity side). Other diodes 2 on a PCB 20b have been added to the edge face of the third glazing unit adjacent to the injection edge face, with another fastening part 4, bottom part 5a and cap 6a.

(82) In a first method for manufacturing the above embodiments, the fastening part is brought into contact with the mastic seal (applied beforehand) while it is still hot. In this configuration, an adhesive (adhesive or double-sided tape) is not used to fasten the fastening part to the mastic and it is not necessary to provide one or more insets for receiving this fastening part. The fastening part may extend as far as to almost make contact with the inserts.

(83) In a second method of manufacture (pertaining to the following embodiments) the fastening part (profile of any shape, a simple strip or a profile of U-shaped cross section) is adhesively bonded to the first face and the first seal is applied, the seal then making contact with the fastening part (and of course with the insert and with the first and second glazing units).

(84) More precisely, this second method comprises the following steps: a shim (of square or preferably rectangular cross section) preferably made of a non-stick material (Teflon) is placed against the injection edge face, the shim being longer than the injection edge face; at least one preferably metal part forming a cap, bottom part and fastening part, is placed around the shim and adhesively fastened to the external face and to the second face; said seal is applied (making direct adhesive contact once set); a framing profile is mounted on the insulated glazing unit by adhesive bonding, with the adhesive referred to as the mounting adhesive or even with a double-sided adhesive tape, said profile including a framing jamb facing the injection edge face and adhesively bonded to the bottom part; the shim is removed leaving a laterally open cavity; and the light source and the source carrier are placed in the cavity via a lateral end.

(85) FIG. 9 shows a schematic partial cross-sectional view of a light-emitting glazed door of a piece of refrigerating equipment 900 in another embodiment of the invention.

(86) The door 900 differs from the door 100 in that the bottom part extends to form a cap. A bent metal sheet that is adhesive coated in order to be adhesively bonded by an adhesive 83, 84 or a double-sided tape to the first and second faces of the first glazing unit is for example chosen.

(87) As a variant an adhesive-coated metal foil with its protective film (cavity side) is chosen and therefore adhesively bonded to both faces of the first glazing unit.

(88) The PCB could also be on the portion 40 and the diodes top-emitting diodes.

(89) FIG. 10 shows a schematic partial cross-sectional view of a light-emitting glazed door of a piece of refrigerating equipment 910 in another embodiment of the invention.

(90) The door 920 differs from the door 9100 in that the cap 6 is a separate part (adhesive-coated metal foil for example) that is adhesively bonded to the back face of the bottom part. The portion 41 is not the edge of the portion 41 but a perpendicular lip.

(91) As a variant an adhesive-coated metal foil with its protective film (cavity side) is chosen and therefore adhesively bonded to both faces of the first glazing unit.

(92) The PCB could also be on the portion 40 and the diodes top-emitting diodes.

(93) FIG. 11 shows a schematic partial cross-sectional view of a light-emitting glazed door of a piece of refrigerating equipment 920 in another embodiment of the invention.

(94) The door 920 differs from the door 910 by the shape of the fastening part which comprises, in addition to the planar lateral portion 40 the edge 41a of which makes direct adhesive contact with the mastic 3, another planar lateral portion 40 the edge 41b of which makes direct adhesive contact with the mastic 3 and which is optionally adhesively bonded to the second glazing unit by an adhesive 83. The fastening part also has another projection facing the edge of the second glazing unit.

(95) The PCB could also be on the portion 40 and the diodes top-emitting diodes.

(96) The part 6 could be an extension of the bottom part.