DE102009006313A1 - Housing arrangement for an electronic clip-on ballast - Google Patents

Abstract

The invention relates to a housing arrangement for an electronic Aufsteck-ballast comprising a first wiring substrate with external pins according to the standard of a standard fluorescent tube of larger diameter and a second wiring substrate with Kontaktbuchststoffröhre smaller diameter, wherein the first and second wiring support substantially parallel spaced from each other, as well as in the housing located active and passive electronic components or assemblies. According to the invention, connecting the first and second wiring substrates, a third wiring substrate is provided, wherein the third wiring substrate is disposed between the first and second wiring substrates and formed into an end portion near the standard smaller diameter fluorescent tube (extension space A). In the space Z between the first and the second wiring support and / or in a second extension space B, heat-sensitive electronic assemblies or components are arranged at least on the third wiring support and heat-sensitive and / or heat-insensitive electronic assemblies or components in the extension space. An outside first housing cap encloses at least the first and third wiring carriers and the space between these two wiring carriers. A second housing cap ...

Description

The The invention relates to a housing arrangement for a electronic plug-on ballast, comprising a first wiring support with external contact pins according to the standard of a standard fluorescent larger Diameter and a second wiring carrier with contact socket for the electrical connection of a standard fluorescent tube smaller diameter, wherein the first and second wiring carrier substantially parallel spaced from each other, as well as active and passive in the housing electronic components or assemblies according to the preamble of claim 1

From the DE 195 24 386 B4 is a rod-shaped electric lamp with an elongated housing and an electric tube, which is arranged in a receptacle of the housing, previously known. In an interior of the housing is a ballast for the operation of the fluorescent tube. The ballast is comprised of two physically separate, electrically connected components, wherein a first component of the ballast is disposed in a first end of the elongated housing and the second component of the ballast is disposed in a second end of the elongate housing. The ballast comprises a power supply and a generator, wherein the power supply is the first component and the generator is the second component of the ballast. The fluorescent tube is designed as a rod-shaped miniature fluorescent lamp, in particular as a so-called T5 lamp. Such T5 lamps have a circular cylindrical, two-sided capped glass lamp bulb, wherein the outer diameter of the lamp envelope is 16 mm.

The Splitting the ballast into spatially separated Components that are located on either side of the T5 lamp should cause a thermal separation of heavily loaded circuit components. Naturally, in such a solution the formation of two separate housings required which makes both the assembly-side effort and handling difficult.

With the double-ended straight fluorescent tube after DE 199 00 888 C5 An electronic ballast is housed either in one or in two sockets, with additional electrical connections between the sockets. The electrical connections between the sockets are attached to this and concealed in a duct located, wherein the duct is formed as a reflector.

By the solution after DE 199 00 888 C5 The conversion of inductive lights to lights with electronic operation should be possible in a simple manner without installation work.

It However, it has been shown that in the arrangement of electronic assemblies and elements in a single, fairly compact housing Thermal problems occur for the desired long-term stability and reliability of the ballast detrimental are.

Known are also electronic ballast the company Neosafe Europe Ltd., with whose help fluorescent lamps T8 type replaced by efficient T5 type fluorescent lamps can be. Such a retrofit ECG for Fluorescent tubes consists of an adapter with external Contact pins and internal contact sockets and the electronic Components for generating the necessary voltages and currents. Furthermore, in addition to the designed as an adapter ballast a current bridge is provided instead of a conventional one Starters, for conventional ballasts is provided is used. Furthermore, a so-called Distal to the T5 tube at the opposite of the ECG adapter End attached or attached.

Also in this prior art solution are thermal problems due to the compact ECG housing and thus a lack of Reliability can not be ruled out.

The state of the art is still on the US 4,163,176 B as well as the DE 20 2006 005 091 U1 referenced, the solutions of electronic ballasts reveal that can be used via a socket-pin pairing in conventional luminaire housing.

Out The above, it is therefore an object of the invention, a further developed Housing arrangement for an electronic clip-on ballast specify all the necessary active and passive electronic Components or assemblies combined and which despite aspiring compact dimensions both sufficient mechanical stability especially when inserting the fluorescent tube as well a high system reliability, especially when occurring thermal loads.

The Solution of the object of the invention is achieved by the feature combination according to claim 1, wherein the dependent claims at least expedient Represent refinements and developments.

It is therefore from a Gehäuseanord for a plug-in electronic ballast, comprising a first wiring carrier with external contact pins according to the standard of a standard larger diameter fluorescent tube and a second wiring carrier having contact sockets for electrically connecting a standard smaller diameter fluorescent tube, wherein the first and second wiring carriers are substantially parallel spaced apart from each other. The housing contains all the necessary active and passive electronic components or assemblies that ensure the functioning of the ballast.

According to the invention, connecting the first and the second wiring support, a third wiring carrier provided.

This third wiring board is between the first and the second wiring carrier arranged. Continues to extend the third wiring carrier in an end portion the standard lamp of smaller diameter. Alternatively or in addition, the third wiring carrier can also larger in the front section of the standard light Diameter, so that a third room behind the second wiring substrate is created.

in the Space between the first and the second wiring substrate are at least on the third wiring substrate heat-sensitive electronic Components or assemblies of the ballast circuit arranged. Likewise, in the room in front of the first wiring board on the third wiring board an array of heat-sensitive Components, eg. As an electrolytic capacitor can be made.

in the Extension space of the end section of the standard light smaller Diameter are located on the third wiring substrate heat-producing and / or heat-insensitive Assemblies or components.

Farther encloses an outside, first housing cap at least the first and parts of the third wiring substrate as well as the space between these wiring brackets.

A second housing cap is the first housing cap provided opposite, wherein the second housing cap at least a part of the extension space of the end portion of the Standard light of smaller diameter with the inside encloses electronic components or assemblies.

The outside housing cap has at least one Inner stop for supporting and absorbing forces on top of the second wiring substrate, in particular when plugging in the standard fluorescent tube smaller Diameter are applied.

Prefers the first housing cap can be formed so that these complete the first and second wiring support and partially encloses the third wiring substrate. In other words, the first housing cap at least surrounds the space necessary for the heat-sensitive electronic Assemblies or components is provided.

The outside, first housing cap is at a preferred embodiment of two opposite Sub-cylinders with straight-walled sections in between.

The second housing cap may also include a partial cylinder.

Of the Radius of the sub-cylinder of the second housing cap corresponds essentially the radius of one of the sub-cylinders of the first Housing cap.

The Area dimensions of the first and second wiring substrate and the surface shape substantially correspond to the cross-sectional area of first housing cap. This is when inserting the arrangement from first to third wiring carrier a lateral Guide and a corresponding hold within the housing cap guaranteed.

Of the Distance of the outer contact pins to one of the outer edges of the first wiring substrate substantially corresponds the radius of the standard fluorescent tube larger Diameter.

at Another preferred embodiment is the first one and the second wiring substrate substantially perpendicular fixed on the third wiring carrier, so that a good partitioning of the room to accommodate the heat-sensitive Components or assemblies results.

Of the second wiring board meets next to it electrical function among other things to the power supply related to the contact sockets also the task of a thermal Separation and shielding of the area in which the heat-producing Components or assemblies are located, from the room where the heat-sensitive Components or assemblies on the relevant sections of the Wiring carrier are arranged.

The first housing cap may be for the purpose of cooling of the room in which the heat-sensitive components or assemblies are located, vents exhibit.

The mentioned two housing caps can be connected by form and / or adhesion.

Ausgestaltend the second housing cap has a flange-shaped Extension on which a circular recess in the area the contact sockets for leading record a corresponding End of the standard fluorescent tube of smaller diameter has.

The Housing caps can in a first embodiment in particular be joined by a snap-in connection. In a second embodiment, the connection is made in the manner of a groove / spring, which realizes the housing running around is.

in the Operating case of the whole arrangement, d. H. when inserting the housing with clip-on ballast in a conventional bulb is the standard smaller diameter fluorescent tube located above the third wiring substrate.

At the Inserting in a conventional light source is the third wiring carrier at the side of the standard fluorescent tube smaller diameter and it becomes the operation case position a pivoting movement of substantially 90 ° about the longitudinal axis reached the overall arrangement. The partially cylindrical design allows the corresponding parts of the housing caps In this case, a maximum utilization of the available Space, without it when swiveling in or out when changing the bulb comes to trouble.

at An embodiment of the invention, the second wiring substrate a greater longitudinal extent than the first wiring carrier on.

at This embodiment comprises the first and second Wiring carrier encompassing partial cylinder of the first Housing cap a grading, which related to the inner stop on the wiring substrate with the larger one Longitudinal extent, d. H. the second wiring substrate forms.

in the Space between the first and the second wiring substrate and / or in front of the first wiring carrier, d. H. by doing cooler section of the housing assembly, are For example, relatively heat-sensitive electrolytic capacitors arranged.

in the Extension space of the end section for standard luminaires smaller diameter, however, are transformers or Inductors. It has been shown here that the efficiency of Transformers, as used for electronic ballasts are used, is improved at a temperature which over the room temperature is. It can therefore here on the one hand the heat of the Transformers, which arises during operation, can be used. To the others can use the heat that comes from preheating the fluorescent tube arises, to increase or to reach the desired Operating temperature can be used.

The Invention will be described below with reference to an embodiment and explained in more detail with the aid of various figures become.

in this connection demonstrate:

1 a perspective view of the basic construction of first to third wiring carrier;

1a a representation similar 1 but with a supplementary extension space of the third wiring substrate in front of the first wiring support;

2 a representation similar to that after 1a but already with a symbolically indicated part of fixed electronic components and assemblies as well as a recorded in the contact sockets fluorescent tube;

3 a perspective view of the housing assembly, wherein here the first housing cap already surrounds the first and second wiring support and a portion of the third wiring substrate, and with a free view of the contact sockets, which are located on the second wiring board and which receiving a corresponding base of the fluorescent tube serve smaller diameter;

4 an illustration of the housing assembly with second housing cap, which encloses an extension space of the third wiring substrate;

4a a representation of the connection of the housing caps via a clamping part, which is inserted from above into an opening in the second housing cap and executed with a pin arrangement in the longitudinal axis direction of the second housing cap, locked;

5 a side view of the complete housing assembly comprising nested first and second housing cap with recognizable outer pins and the second Housing cap partially enclosed fluorescent tube;

6 a perspective view of the illustration after 5 with recognizable outer side of the second housing cap without fluorescent tube located there;

7a to 7c a principle, non-limiting mounting scheme for the housing assembly;

8th a longitudinal section through the housing assembly with detail B and there recognizable inner stop for the second wiring substrate and

9 a representation similar to that after 4a with additional clamp part.

The 1 shows the arrangement of the first to third wiring carrier as a perspective view.

The wiring carriers are designed here as provided with the appropriate conductor tracks copper-laminated boards. The first and second wiring carrier 1 ; 2 are at a spacing perpendicular to the surface plane of the third wiring substrate 3 located.

The relation to the overall arrangement outside of the first wiring substrate 1 takes a pair of pins 5 on. The diameter of the contact pins 5 and their spacing in one embodiment of the invention corresponds to the size and arrangement of socket pins of a standard T8 type fluorescent tube.

The second wiring carrier 2 has a pair of contact sockets 4 on. These contact sockets 4 are dimensioned to accept pins on a base of a standard T5 type luminaire.

In space Z between the first and second wiring support 1 ; 2 , in particular on the surface of the third wiring substrate available there 3 According to the invention, all heat-sensitive components or assemblies are arranged.

The Indian 1 shown right-hand portion of the third wiring substrate 3 , designated as the first extension space A, accommodates heat-producing and / or heat-insensitive assemblies or components of the ballast circuit arrangement. 1a FIG. 10 illustrates a second embodiment in which a second extension space B is obtained by returning the first wiring substrate 1 or extending the third wiring substrate 3 was created.

The arrangement of corresponding electronic components is the 2 removable.

An electrolytic capacitor 6 is located in the space between the first and the second wiring carrier 1 ; 2 and / or in the second extension space 3 , Wärmeproduzierende components, such. B. transformers 7 on the other hand, are located on the extension-space-side part of the third wiring substrate 3 (Room A).

In the presentation after 2 is indicated as a base end of a standard fluorescent tube of smaller diameter 11 from the contact sockets 4 is recorded.

3 allows the execution of an outside, first housing cap 8th detect.

This housing cap 8th encloses according to the illustration 3 the first and second wiring carriers 1 ; 2 and a larger portion of the third wiring substrate 3 and thus the room or the rooms B and Z (second embodiment) for receiving the heat-sensitive electronic assemblies or components.

The outside housing cap can be a gradation 9 with resulting inner stop (see 5 ) exhibit.

This grading 9 and the resulting inner stop cooperates with the rounding portion, ie, the upper portion of the second wiring substrate 2 together and fixes it against displacement movements, especially when inserting the fluorescent tube 11 in the contact sockets 4 ,

A second housing cap 10 , in the final state of the first housing cap 8th is opposite, is in the 4 and 4a shown.

This second housing cap 10 encloses at least a part of the extension space A and located in this space electronic assemblies or components that have heat-producing or heat-insensitive properties.

The two housing caps 8th and 10 Can use a tongue and groove or snap-in connection 14 locked in each other latching, as in the result, the side view 5 or the perspective view after 6 shows.

From the overall view of 3 . 5 . 6 and 7a to 7c it becomes clear that the outside, first housing cap 8th consists of two opposite sub-cylinders with straight sections located therebetween.

Also the second housing cap 10 has a partial cylinder shape with a substantially subsequent straight section (see in particular 6 ).

The radius of the part cylinder of the second housing cap 10 essentially corresponds to the radius of the sub-cylinder of the first housing cap 8th , so here at the bottom (see 5 and 6 ) a continuous transition between the housing caps 8th and 10 results.

The area dimensions of the first and second wiring substrates 1 ; 2 and their surface shape substantially correspond to the cross section of the first housing cap 8th , so that on the one hand, the available space is optimally utilized and on the other hand, an all-round leadership of the wiring support relative to the first housing cap 8th is guaranteed.

In an embodiment not shown figuratively, there is the possibility in the first housing cap 8th additionally form ventilation openings in order to improve the cooling of the components located in this subspace or to prevent an undesirable increase in temperature.

The second housing cap 10 has a flange-shaped extension 12 which is a circular recess 13 in the field of contact sockets 4 for leadingly receiving a respective end of the standard fluorescent tube 11 has.

The extent of the housing assembly in the direction A according to 5 is chosen so that insertion into a conventional bulb for receiving Type T8 lights can be made vertically from above and pivoting through 90 °, without the housing assembly collides with the lamp body in carrying out this pivoting movement. At the same time the available space is used to the maximum.

The Housing arrangement according to the invention increases a complete electronic ballast to operate a T5 fluorescent lamp in a light source, usually provided for inserting a T8 fluorescent tube or suitable is. A conversion from T8 to T5 can be done without installation side Made effort, the housing arrangement for the necessary thermal separation through the described volumes provides.

The assembly of the housing arrangement takes place z. B. as in the 7a to 7c shown.

The assembly of first to third wiring substrates and electronic components (not shown) thereon are placed in the first housing cap 8th inserted.

The upper rounding edge of the second wiring substrate 2 comes into abutment with the inside of the gradation 9 the first housing cap 8th (see also 8th and detail B).

After the end position of the first to third wiring support assembly is reached, the second housing cap becomes 10 postponed. This then surrounds the extension space with therein electronic components (not shown), in particular the heat-producing and heat-insensitive components.

Using a snap-in connection through the parts 14 and 15 , Which are provided on the first and second housing cap, there is a positive and non-positive connection of the two housing caps with each other.

According to the representations after the 4a and 9 there is the possibility for easier insertion and fixing of a connection cable, a clamping part 16 to provide, for the purpose of assembly after moving the first housing cap to each other 8th and the second housing cap 10 from above into an opening 17 the first housing cap 8th is used. Rest extensions 19 , designed as locking lugs, which are located on the clamping part 16 extending and extending in the direction of the longitudinal axis of the overall arrangement, engage behind the space between two spaced pins of a pin arrangement 18 , On the mounting side, the boards are inserted into the housing cap 8th inserted and then with the housing cap 10 locked. Afterwards the connecting cable is connected. Thereafter, the supplementary clamping part 16 assembled. This clamping part 16 on the one hand has the function of improved cable mounting on the second wiring substrate. On the other hand, the clamping part 16 provided with a strain relief for the connection cable. Alternatively, it is also possible in the housing cap 8th to install a further inner stop for the first wiring support, which can be realized by a step inside the housing. In addition, a force-absorbing stop by the guide channels for the contact pins 5 available. These guide channels are in the housing cap 8th integrated and extend to the board position of the wiring substrate 1 , Outer mounting pins 20 (please refer 9a ) on the housing cap 10 serve the possible fixation and power dissipation of a reflector. Thus, the reflector weight is not carried as before alone by the fluorescent lamp, but it the reflector weight is distributed to the housing, the fluorescent lamp of smaller diameter and the Gegenpolhülse.

1 to 3

first to third wiring carrier

4

Contact socket

5

contact pins

6

electrolytic capacitor

7

transformer or inductance

8th

first housing cap

9

gradation

10

second housing cap

11

Fluorescent tube

12

flange-like extension

13

circular recess

14; 15

Snap-in connection means

16

clamping part

17

opening

18

pin arrangement

19

Rest extensions

20

mounting pins

A

first extension area

B

second extension area

Z

room between first and second wiring carrier

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19524386 B4 [0002]
• - DE 19900888 C5 [0004, 0005]
• US 4163176 B [0009]
• - DE 202006005091 U1 [0009]

Claims (21)

Housing arrangement for an electronic clip-on ballast, comprising a first wiring support ( 1 ) with external contact pins ( 5 ) according to the standard of a standard larger diameter fluorescent tube and a second wiring carrier ( 2 ) with contact sockets ( 4 ) for electrically connecting a standard smaller diameter fluorescent tube, wherein the first and second wiring carriers are substantially parallel spaced apart from each other, as well as active and passive electronic components (FIGS. 6 ; 7 ) or assemblies, characterized in that - the first ( 1 ) and second ( 2 ) Wiring carrier connecting a third wiring carrier ( 3 ), wherein the third wiring substrate ( 3 ) between the first ( 1 ) and the second ( 2 Wiring carrier and in an end portion near the standard fluorescent tube of smaller diameter ( 11 extending into (space A) is formed, - in space (Z) between the first ( 1 ) and the second ( 2 ) Wiring carrier at least on the third wiring substrate ( 3 ) heat-sensitive electronic assemblies or components ( 6 ) and in the first extension space (A) heat-producing and / or heat-insensitive electronic assemblies or components ( 7 ), - an outside, first housing cap ( 8th ) at least the first and third wiring substrate ( 1 ; 3 ) and the space (Z) between these wiring carriers encloses and a second housing cap ( 10 ) of the first housing cap is provided opposite, wherein the second housing cap ( 10 ) at least a part of the first extension space (A) with therein electronic assemblies or components ( 7 ) encloses. Housing arrangement according to claim 1, characterized in that a second extension space (B), the first extension space (A) opposite and the space (Z) then, behind the first wiring substrate ( 1 ), is provided. Housing arrangement according to claim 2 or 3, characterized in that the outside housing cap ( 8th ) has an inner stop for supporting and absorbing forces acting on the second wiring carrier ( 2 ) are applied. Arrangement according to claim 1 or 2, characterized in that the outside, first housing cap ( 8th ) consists of two opposite sub-cylinders with linear sections located therebetween. Arrangement according to one of the preceding claims, characterized in that the second housing cap ( 10 ) is formed from a partial cylinder. Arrangement according to claim 4 and 5, characterized in that the radius of the sub-cylinder of the second housing cap ( 10 ) the radius of one of the partial cylinders of the first housing cap ( 8th ) corresponds. Arrangement according to one of claims 4 to 6, characterized in that the surface dimensions of the first and second wiring substrate ( 1 ; 2 ) substantially the cross-sectional area of the first housing cap ( 8th ) correspond. Arrangement according to one of the preceding claims, characterized in that the distance of the outer contact pins ( 5 ) to one of the outer edges of the first wiring substrate ( 1 ) substantially corresponds to the radius of the standard larger diameter fluorescent tube. Arrangement according to one of the preceding claims, characterized in that the first ( 1 ) and second ( 2 ) Wiring carrier substantially perpendicular to the third wiring substrate ( 3 ) are fixed. Arrangement according to one of the preceding claims, characterized in that the second wiring carrier ( 2 ) the space for receiving the heat-sensitive assemblies or components ( 6 ) from the first extension space (A) of the heat-producing assemblies or components (A) 7 ) shields. Arrangement according to one of the preceding claims, characterized in that the first housing cap ( 8th ) Has ventilation openings. Arrangement according to one of the preceding claims, characterized in that the two housing caps ( 8th ; 10 ) are connectable to each other by form and / or adhesion. Arrangement according to one of the preceding claims, characterized in that the second housing cap ( 10 ) a flange-shaped extension ( 12 ), which has a circular recess ( 13 ) in the area of the contact bushes ( 4 ) for leading a base end of the standard smaller diameter fluorescent tube ( 11 ) owns. Arrangement according to claim 12, characterized ge indicates that the housing caps have tongue and groove and / or snap-in connection means ( 14 ; 15 ) feature. Arrangement according to one of the preceding claims, characterized in that in operation the standard fluorescent tube of smaller diameter ( 11 ) above the third wiring substrate ( 3 ) is located. Arrangement according to one of the preceding claims, characterized in that when inserted into a conventional light source, the third wiring substrate ( 3 ) laterally of the standard smaller diameter tube ( 11 ) and the operating case position is achieved by a pivoting movement of about 90 ° about the longitudinal axis of the assembly. Arrangement according to one of the preceding claims, characterized in that the second wiring carrier ( 2 ) has a greater longitudinal extent than the first wiring carrier ( 1 ) having. Arrangement according to claim 4 and 17, characterized in that the first ( 1 ) and second ( 2 ) Wiring carrier encompassing partial cylinder of the first housing cap ( 8th ) a grading ( 9 ), which forms the inner stop. Arrangement according to one of the preceding claims, characterized in that in the space (Z) between the first ( 1 ) and second ( 2 ) Wiring carrier and / or in the second extension space (B) at least one electrolytic capacitor ( 6 ) is arranged. Arrangement according to one of the preceding claims, characterized in that in the first extension space (A) transformers or inductors ( 7 ) are arranged. Arrangement according to one of the preceding claims, characterized in that the standard fluorescent tube larger diameter type T8 and one smaller diameter of the type T5.