FR2788193A1 - Light installation semiconductor component manufacture technique having inner semiconductor component outer thermal radiator inserted and wiring connection position clamped using outer body mouth section deformation. - Google Patents

Abstract

The semiconductor component manufacture technique has an outer thermal radiator section (12) into which the component (1) surrounded by an isolating electrical sleeve (11) is inserted. The protruding wire (1C) is clamped into position by a tool (20) which permanently deforms the shape of the box (126) at the component exit mouth.

Description

I

  The present invention relates to a process for

  reading of a medium semiconductor component element

  insulated and radiator as well as a resulting element.

  The present invention relates to a process for

  reading of an electronic element comprising an semiconductor component with insulated medium and a radiator, the semiconductor component being provided with its conductors and its housing is housed in an electrically insulating sheath inside

of a radiator.

  The invention also relates to an element with

  electronic radiator fitting comprising - a housing connected to the component cable, - a sleeve receiving the housing and the assembly thus formed

  is housed in a radiator having a sleeve shape.

  The invention relates to the field of components

  through which an intensity which can be rela-

  significant or for an extended period of time so

  that the component heats up and that it has to be increased

  natural heat exchange face (usually made up

  by its housing) to promote heat exchange and avoid

  ter that the temperature does not exceed a critical temperature

risking destroying the component.

  Such an electronic component element is by

  example used as a shunt for a dim lamp

  being part of a set of low voltage lighting lamps

mounted in series.

  Indeed, in the case of such an installation,

  as all the lamps are placed in series, it is essential

  thinkable that the failure of a lamp, that is to say the

  pure of the (weak) resistance which it constitutes, does not

  translate into a total power cut.

  In this case, it is known to short-circuit the defective lamp to supply the other lamps connected in series. Such a shunt is currently produced, as taught, for example in the document FR 97 14 627, by a triac combined with a diode. The box with the triac and the diode as well as the end of the electric cable are housed in an electrical insulating sleeve itself glued in a

  heat conductive sleeve, for example an aluminum sleeve

minimum constituting a radiator.

  After this installation we sink into this

  seems a mass which hardens thus achieving perfect electrical insulation and good thermal conduction between

  the component housing and the external radiator.

  The power released by the semi-component

  conductor is such that an external radiator is required

  tively large and in general much larger than the box

  tier of the electronic component to eliminate the heat given off and avoid a rise in temperature beyond a relatively low operating temperature in steady state. But this element thus produced presents

  the disadvantage of a relatively high relative cost for its em-

  bend. The present invention aims to develop a

  method and device of the type defined above for obtaining

  to provide a simpler, less costly and more efficient package.

  To this end, the invention relates to a method

  characterized in that - the component housing is placed in an insulating sheath

  electric and the whole in a man-shaped radiator

  metal cord cut to the appropriate length,

  - at least one deformation of the material of the man-

  metal mesh by permanent deformation to wedge the

housing in the sleeve.

  The method according to the invention thus reduces

  important lesson the number of manufacturing steps of the element with semiconductor component since it suffices with a simple mechanical deformation of the sleeve forming the radiator,

  in a place where there is no risk of crushing the housing of the component

  sant or the component itself, to nevertheless have a good fixation of the component in the sleeve forming the radiator while allowing rapid and efficient evacuation of the

heat given off by the component.

  The simplicity of the embodiment according to the invention also results in a significant reduction in manufacturing time, in addition to the time necessary for the execution of the operations themselves since there is no need to wait for any drying or setting of the char resin

managing the element.

  According to different characteristics of the invention

  tion, the deformation of the sleeve forming the radiator can

  be a single deformation, placed next to the housing of the

  posing and which is large enough to block the component

  health without subjecting it to excessive stress.

  It is also possible to multiply the number of deformations or imprints, for example two imprints,

  one on each side of the component location.

  More advantageously, the method makes three indentations, two on the sides, and the third pinching and blocking the power cable previously furnished with a

insulation sleeve.

  In a particularly advantageous way, this imprint or deformation of the sleeve constituting is combined

  the radiator to a pinch of the electric cable connected to the

  posing. To do this and to avoid damaging the cable,

  everything if it is made up of two unique, non-braided threads,

  the cable is covered with an outer sleeve which effectively constitutes

  placement a means of absorbing dimensional differences-

  while allowing very effective cable clamping,

  avoiding any pulling of the cable with respect to the component.

  The invention also relates to an element with

  electronic posing performed according to the process defined above

  above, characterized in that the housing is crushed by a punch

  in at least one place next to the location of the component housing to lock it in the sleeve

forming the radiator.

  As already indicated, the sleeve forming the radia-

author can have three fingerprints.

  It is also very advantageous to increase the heat exchange surface of the sleeve and to simplify the production while improving the stability of the behavior of the

  component inside the radiator thanks to fins

  dull provided in the sleeve forming the radiator; these fins constitute lateral shims holding the component housing preventing it from moving and also improving the heat exchange.

  It is also possible to make the element with electronic component, differently, with a sleeve which crashes laterally or which preserves the flat surfaces

  both above and below.

  Thus, according to a particularly advantageous characteristic of the invention, the housing is formed of a sleeve, of rectangular section, provided, on its small sides, with pleats allowing the crushing of the sleeve for blocking the component and its sheath. 15 When the sleeve is crushed on the sides, the deformation is relatively slight since there is no need to

  properly speaking of footprint but simply a slight crushing

  siding of the two edges, crushing made possible by

crushing the folds.

  In the case where the upper surface of the sleeve must remain perfectly flat, it is advantageous to use

  a sleeve of a different type. Such a sleeve is characteristic

  in that the sleeve has a double wall, the intermediate wall defining the housing with the lower wall

  receiving the component and its sheath, and this intermediate partition

  diary deforming at the same time as the side folds for

  block the component and its sheath while the outer wall

remains flat.

  Thus, this sleeve can be crushed with a punch.

  perfectly flat. The sleeve is then crushed between the surface on which it is supported and the punch and the wall

  intermediate which delimits with the bottom of the sleeve, the cham-

  bre receiving the component and its sheath, deforms at the same

  time the side folds are crushed.

  In general, making a sleeve with side pleats with or without an intermediate wall is particularly simple. Such a sleeve is like the sleeve with internal radiator fins or the sleeve with a single rectangular section, which can be produced in the form of a profile.

  extruded, in particular from aluminum or an alloy having

  similar characteristics of thermal conductivity and

  neatness. The realization of a sleeve with lateral folds makes it possible to reduce the width of the element produced,

  since the radiation and conduction surface of the radia-

  tor constituted by the sleeve, is preserved due to the

surface of the folds.

  The present invention will be described below from

  in more detail using the accompanying drawings in the-

which:

  - Figure 1 is an electrical diagram of an ap-

  plication of an electronic component according to the invention,

  - Figure 2 schematically shows the realization

  tion of a component according to the known technique, - Figure 3 is a sectional view supplementing Figure 2 and showing the final phase of the production of an element with electronic component according to the prior art,

  - Figure 4 schematically shows the different

  many components of an element with an electro- component

  nique according to the invention, - Figure 5 is a perspective view of the element with electronic component, finished, - Figure 6 is a longitudinal sectional view of the element with electronic component according to the invention, - Figure 7 is a cross section of

the element of figure 6.

  - Figures 8A, 8B are sectional views ana-

  logues to those of FIGS. 6 and 7 of a first variant of

  production of sleeves according to the invention.

  - Figures 9A, 9B are sectional views ana-

  logues to the previous ones showing a second variant of

  reading of a sleeve according to the invention.

  According to FIG. 1, the invention relates, to my-

  non-exclusive, electronic components consisting of

  health (s) semiconductor (s) constituting a shunt, as by

  example the SHT shunt on the Li lamp in series with a set of

  ble of lamps L2 ... and a power regulator between a

  pale P and a neutral N of an alternating voltage supply

  tive. All Li lamps, L2, are crossed by the same current. To prevent the lamps from being cut off from the power supply in the event of one of the lamps failing,

  these are shunted by an element with an electronic component.

  according to the invention. This element functions as a commu-

  switch which closes when the voltage across the lamp

  defective Li, L2 ... exceeds a certain threshold (which

  responds to the opening of the resistance represented by the

defective lamp).

  According to FIG. 2, the element with an electronic component

  SHT pic, etc. known is constituted by a triac lt with a diode ld; the assembly is connected between the supply line and the output line of the lc cable. The triac lt is located in a housing 1 forming a thermal radiator lr. According to the prior art, the housing 1, equipped with its diode ld and the cable lc, is placed in a sheath 2 which will

  possibly glued in a sleeve 3 forming a radiator.

  The area of this sleeve 3 is calculated based on

  tion of the heat loss to achieve to stabilize the temperature and stay below a certain temperature level.

  Sleeve 3 is a piece cut from a pro-

  extruded such as for example an aluminum profile which is suitable

Especially.

  After setting up the housing lr of the component 1, ld, with its cable lc in the sheath 2, then introduction of the assembly into the sleeve 3 (FIG. 3), a resin is poured

  to block the various components of the assembly.

  This known solution has the drawback of requiring a relatively long and therefore costly implementation. The present invention relates to a method and a

  different from those described above.

  The element comprises a semiconductor component 1, provided with an input diode ld and an input / output cable

  lc with a box lb for the semiconductor component.

  Once the lc cable is connected to the semi-component

  conductor 1, ld, a protective sleeve 10 of relatively short length is engaged on the cable lc, constituting, as will be seen later, a cable gland. After this installation or before it, the component lc with its complement ld is introduced into a

  elastic sheath 11, made of plastic, constituting a means of electrical insulation. The elastic sheath is pre-

  silicone rubber shoe. Then, the sheath 11 thus furnished is housed in the

  cavity 121 of a sleeve 12, metallic, constituting a radiator

  tor, that is to say a heat exchanger.

  In the example shown in Figure 4, the man-

  chon 12, which is preferably made of aluminum or aluminum alloy, of fairly flat rectangular section, internally comprises fins 122, 123 placed on each side of the sleeve 121. Between the two groups of fins 122, 123 there remains a interval for control unit 1 already

placed in the elastic sheath 11.

  The elastic sheath 11 is definitively blocked with its component 1, lt, ld and its cable lc, by making, in the sleeve 12, one or more imprints 124, 125, 126 bordering the location of the electronic component. In the simplest case, a fingerprint 124 may suffice. In cases

  more complex, it may be necessary or preferable to pre-

  see at least three footprints distributed around the outline

  theoretical of the component inside the sleeve 12. This if

  tuation is shown in Figure 5.

  Figures 6 and 7 show in longitudinal section

  nal and transverse the realization of an imprint as

  the imprint 126 or the imprint 124 of FIG. 5.

  The fingerprint (s) 124-126 can also receive identification elements such as a code as it appears for the fingerprint 126 in FIG. 5, so

  only one operation performs the imprint and marking.

  Figure 6 schematically shows a punch 20

  with its projecting part 21 making the imprint 126.

  Figure 7 shows in section the result of

  the operation performed in Figure 6.

  Figures 8A and 8B show another mode of

embodiment, according to the invention.

  In these figures, the same reference will be used

  these as above to designate identical or analogous elements, supplementing these references with the suffix A. The component 1A is placed as previously in a sheath 11A but the latter is placed in a sleeve 12A, profiled, having generally a section rectangular with,

  in the short sides, folds 127A, 128A, preferably sy-

  metric. These folds can be crushed.

  Thus, when the sleeve 12A is compressed as indicated by the arrows A, there is, on the one hand, a crushing of the folds 127A, 128A as well as possibly a deformation in omega of the upper surface, if the punch s' press on the sides as indicated by the two arrows A in figure 8A. The sides thus have recessed parts

  124A, 125A and the central part 126A remains and forms a bom-

  stupidly. The initial position of the upper surface is represented by the dotted line P. In this embodiment, the folds 127A, 128A of the

  sleeve 12A somehow constitute fins of ra-

  diator, the equivalent of the fins 122, 123 of the embodiment

previous station.

  These folds also constitute means of po-

  sitioning of the assembly formed by component 1A and its

sheath 11A.

  FIGS. 9A, 9B show another mode of reaction.

  reading. It can indeed be interesting for some

  applications that the upper surface as the lower surface

of the sleeve remain flat.

  In this alternative embodiment, the same reference numerals have been used as in the previous embodiments with a suffix B to designate the elements

identical or analogous.

  According to FIG. 9A, component 1B is placed

  in an EB sheath of the same type as the previous sheaths.

  The assembly is placed in a sleeve 12B which has on the sides two plies 127B, 128B and on the top, a double wall

129B, 130B.

  This double wall allows crushing with a flat punch 20B, as indicated in FIG. 9B. The inner wall 129B is laterally crushed at the same time as the folds 127B, 128B are also crushed. But the top B as well as the bottom of the sleeve 12B retain a

perfectly flat shape.

  The sleeves 12A, 12B can be produced in the form of extruded / drawn profiles made of a metal such as aluminum or a light metal alloy which is a good heat conductor.

Claims (5)

R E V E N D I C A T IONS   1) Method for producing an electronic element comprising   both an insulated medium semiconductor component and a radiation   tor, the semiconductor component being provided with its conductors and its housing (1) is housed in an electrical insulating sheath (2, 11) inside a radiator (3, 12), characterized in that   - the component housing (1) is placed in an iso- sheath   electric batten (11) and the assembly in a radiator   shape of metal sleeve (12) cut to the appropriate length   required, - at least one deformation (124-126) of the material of the metal sleeve (12) is carried out by permanent deformation to   wedge the housing (1) in the sleeve.   2) Method according to claim 1, characterized in that two lateral deformations (124, 125) are produced on the one hand and   on the other side of the housing (1) of the semiconductor component.   ) Method according to claim 1, characterized in that an external sheath (10) is placed on the cables (lc) at the inlet of the radiator and the cable sheath (10) is crushed (lc) to block the cable.   ) Element with electronic component comprising a radiator comprising - a housing connected to the component cable, - a sleeve receiving the housing and the assembly thus formed is housed in a radiator having the form of a sleeve, characterized in that   the housing (1) is crushed by punching at least one   right (124, 125, 126) next to the location of the component housing (1) to lock it in the sleeve forming the radiator. l1) Element with electronic component radiator according to claim 4, characterized in that the sleeve (12) forming a radiator comprises three indentation marks (124-126) distributed around the periphery   the location of the housing (1) of the semiconductor component.   6) Element with electronic radiator component as per   vendication 4, characterized in that   the sleeve forming the radiator internally comprises ai-   lateral strips (122, 123) constituting lateral wedges   for the housing (1) of the semiconductor component.   7) Element with electronic component radiator according to the re-   vendication 4, characterized in that the sleeve (12) is made of a heat conducting metal such as   aluminum or an aluminum alloy.   8) Element with electronic heat component according to the re-   vendication 4, characterized in that   it includes an elastic sheath (11) made of silicone rubber.   ) Element with electronic radiator component as per   vendication 4, characterized in that the housing (1) is formed by a sleeve (12A, 12B), of rectangular section, provided, on its short sides, with pleats (127A, 128A, 127B, 128B) allowing crushing sleeve for the   blocking of the component and its sheath (1A, 11A, 1B, 11B).    ) Element with electronic radiator component according to claim 9, characterized in that the sleeve (12B) has a double wall (129B, 130B), the   intermediate wall (129B) delimiting with the lower wall   the housing receiving the component (IB) and its sheath (IIB), and this intermediate partition deforming at the same time as the lateral folds to block the component and its sheath while the outer wall (130B) remains flat.