DE102019205859A1 - Speaker unit - Google Patents

Abstract

The invention relates to a loudspeaker unit (1) with a carrier part (10) to which a magnet (20) is attached. A membrane (30), to which a coil (40) is attached, is movably held on the carrier part (10). The coil (40) is at least partially arranged in an annular gap (22) of the magnet. A cover (100) is used to optically conceal the membrane (30) and also to make a mark (70) visible. According to the invention, it is proposed that at least one light-emitting element (50) is arranged behind the cover (100) in such a way that when released of light rays (L) through the light emitting element (50) the identifier (70) in the light emission direction behind the light emitting element (50) on a delimited area (71) of the cover (100) can be made visible or its visibility can be increased.

Description

The invention relates to a loudspeaker unit with the features of the preamble of claim 1.

Such loudspeaker units are sufficiently known from the general prior art. For design reasons and for brand-specific customization, it is often desirable to provide the loudspeaker unit with a corresponding identifier on its cover. In addition to its concealing and protective function, the cover also serves to make the license plate visible. The identifier can be designed, for example, as lettering, a sequence of letters or as a symbol. It is mostly applied as a plate-like component in the middle of the cover of the loudspeaker unit for the purpose of good visibility. However, this leads to significant sound impairment, since such a positioning is located directly in the sound exit area of the loudspeaker unit.

From the DE 20 2006 015 232 U1 a cover device for a loudspeaker has become known, which consists of a frame which carries a loudspeaker grille as a cover. The frame is manufactured in a two-component process and consists of colored, opaque plastic and sections of translucent plastic with light-diffusing properties. A light source in the form of a light-emitting diode is arranged in each of the translucent areas of the frame. The light from the light sources penetrates the frame, is scattered there by the material properties and emerges diffusely from the frame. It is also proposed to provide the frame in certain areas with symbols and alphanumeric characters which are highlighted when the frame is illuminated.

From the DE 20 2014 102 203 U1 a loudspeaker cover has also become known. The cover has a frame formed from a bend of a semi-finished product, the inside of which is assigned a light guide in order to illuminate an edge region of the loudspeaker cover. Specifically, the cover is illuminated indirectly from the inside out, since light passes through the perforation holes in the speaker cover to the outside.

The present invention is based on the object of providing a loudspeaker unit which can be individualized by means of an identifier without having to accept any loss of sound.

The present problem is solved by a loudspeaker unit with the features of patent claim 1. Advantageous designs or further developments of the invention can be found in the respective dependent claims.

The invention is based on a loudspeaker unit with a carrier part to which a magnet is attached. A membrane is also movably held on the carrier part, to which a coil is in turn attached. The coil is at least partially arranged in an annular gap of the magnet. There is a cover for optically concealing the membrane, the cover also serving to make a label visible.

The invention now proposes that at least one light-emitting element is arranged behind the cover in such a way that when light rays are emitted by the light-emitting element, the label in the light-emitting direction behind the light-emitting element can be made visible on a delimited area of the cover or its visibility can be increased.

For this purpose, the basic requirements are created so that the loudspeaker unit can be individualized by means of a label, without the acoustic properties of the cover (i.e. sound permeability) being significantly impaired.

According to a further development, it is proposed that the light-emitting element is arranged on a longitudinal center axis of the loudspeaker unit. In this way, uniform visualization of the identifier on the cover is promoted by the emitted light rays.

In a very advantageous embodiment of the inventive concept, at least one carrier element with the identifier can be arranged between the light emitting element and the cover, the carrier element being transilluminated by emitted light rays of the light emitting element in the manner of a slide frame.

This creates an image or a projection of the license plate on the cover, which enables the license plate to be made visible in a structurally simple manner.

It is conceivable that the carrier element is transparent and the label is opaque. Conversely, it is also possible to make the carrier element impermeable and the identifier translucent.

According to another development it is conceivable that the carrier element mentioned by the To train membrane itself. This helps to reduce the number of components.

If the carrier element is designed as a separate component, additional processing of the sensitive membrane can be dispensed with, thus simplifying manufacturability.

It is also conceivable to design the light-emitting element as a projector unit or as a mini projector, which enables a compact design with high functionality.

In particular, the light-emitting element can in this case be designed as a projector that can be freely controlled by a suitable control unit. Such a solution offers a high degree of flexibility. For example, in this case it is also possible to change the identifier dynamically when it is made visible.

It can also be advantageous if the light-emitting element is designed as a light coupling-out surface of a light guide. Such a solution can be advantageous above all when a light source and a control unit which may control it have to be accommodated in a location separate from the loudspeaker unit.

If the light-emitting element is designed as a light-emitting diode, in particular as an RGB light-emitting diode, this contributes to a compact design of the loudspeaker unit. A so-called RGB light-emitting diode can emit light rays in any light color of the color spectrum.

In a very expedient embodiment of the inventive concept, it is also conceivable that the label is applied to the cover itself in such a way that existing openings in the cover for sound passage are not reduced in size or covered. As a result, the structure of the loudspeaker unit can be simplified and a license plate can be made visible in a sound-neutral manner.

A simple application can be done, for example, by laser processing or by printing with such a color that is emphasized when irradiated with light.

Finally, the invention is also intended to protect a motor vehicle which is equipped with at least one loudspeaker unit according to the invention.

Preferred exemplary embodiments of the invention are shown in the figures and are explained in more detail in the following description with reference to the figures. This also makes further advantages of the invention clear. The same reference symbols, even in different figures, relate to the same, comparable or functionally identical components. Corresponding or comparable properties and advantages are achieved, even if a repeated description or reference is not made. The figures are not, or at least not always, to scale. In some figures, proportions or distances can be exaggerated in order to be able to emphasize features of an exemplary embodiment more clearly.

• 1 einen Längsschnitt durch eine Lautsprechereinheit in einer ersten Ausführungsform,
• 2 einen Längsschnitt durch eine Lautsprechereinheit in einer zweiten Ausführung,
• 3 eine Ansicht auf die Lautsprechereinheit gemäß Ansicht III aus 1, jedoch mit abgenommener Abdeckung,
• 4 einen Längsschnitt durch eine Lautsprechereinheit in einer vierten Ausführungsform,
• 5 einen Längsschnitt durch eine Lautsprechereinheit in einer fünften Ausführungsform und
• 6 ein Kraftfahrzeug mit zwei erfindungsgemäßen Lautsprechereinheiten.

It show each schematically

• 1 a longitudinal section through a loudspeaker unit in a first embodiment,
• 2 a longitudinal section through a loudspeaker unit in a second embodiment,
• 3 a view of the loudspeaker unit according to view III 1 but with the cover removed,
• 4th a longitudinal section through a loudspeaker unit in a fourth embodiment,
• 5 a longitudinal section through a loudspeaker unit in a fifth embodiment and
• 6 a motor vehicle with two loudspeaker units according to the invention.

First, the 1 Referenced. In this figure is a speaker unit 1 can be seen which in an interior panel 3 a not shown motor vehicle is mounted.

In the interior trim 3 it can be, for example, a door lining, a headlining lining, an instrument panel lining or the like.

Specifically, there is the speaker unit 1 from a housing-like support part 10 in which a magnet 20th , in particular a ring magnet, is added. By the magnet 20th becomes an annular gap 22nd educated.

It can also be seen that the magnet 20th a through hole in the middle 21a has, which with a conical widening 21b is provided. On the carrier part 10 is also a membrane 30th over a rubbery bead 31 held so movably that the membrane 30th a vibration S. in the direction of a longitudinal central axis 5 can perform.

With the membrane 30th is a tubular extension 32 connected. On the tubular extension 32 is a coil 40 attached, which is connected to a power supply in a manner not shown.

Both the appendix 32 as well as the coil 40 are located at least partially within the aforementioned annular gap 22nd .

When current flows through the coil 40 becomes a movement of the appendix 32 and thus the membrane 30th in the direction of the longitudinal central axis 5 induced and there is thus a sound radiation in the direction of an interior 6 .

It can also be seen from the figure that the loudspeaker unit 1 a cover 100 having. Through the cover 100 are the carrier part 10 and the membrane 30th to the interior 6 covered and optically concealed. The cover 100 is preferably on the carrier part 10 attached. But it is also conceivable that the cover 100 elsewhere, for example on the interior lining 3 is attached.

The cover 100 has a grid-like cover element 101 on which one with small openings 102 is interspersed. The openings 102 serve as sound passage openings for the loudspeaker unit 1 .

At the speaker unit 1 In the exemplary embodiment, it is a tweeter, in particular a so-called dome tweeter. However, the principle of the invention can also be applied to loudspeaker units which operate in other frequency ranges, that is to say in the mid-range or also in the bass range.

It can also be seen that in the area of the conical widening 21b , concentric to the longitudinal center axis 5 , a light emitting element 50 is arranged. The light emitting element 50 is designed as a light-emitting diode in the present case. A necessary power supply and attachment for the light emitting element 50 is not shown in detail.

When activating the light-emitting element 50 become rays of light L. towards the cover 1 submitted. This creates a cone of light 80 that is on the cover 1 in a demarcated area 71 is projected.

Between the light emitting element 50 and the cover 100 , especially between the membrane 30th and the cover 100 , is a separate component 60 arranged, which on the carrier part 10 is mounted.

The component 60 serves as a carrier of a license plate 70 . The license plate 70 can for example be designed as lettering, as a symbol, brand emblem or the like.

So that the membrane 30th and the component 60 from the rays of light L. can be transilluminated, these components are at least partially transparent.

In the present embodiment, the component 60 transparent and the mark 70 made opaque. When activating the light-emitting element 50 thus becomes the component 60 including the license plate 70 X-rayed like a slide frame. The license plate 70 is thus on the demarcated area 71 projected.

This has the great advantage that the cover 100 or the cover element 101 can be left unchanged in the sound outlet properties, so that despite making the label visible 70 on the area 71 maximum sound permeability of the cover 100 can be achieved.

The figure also shows that the loudspeaker unit 1 in one housing 90 is included, which in turn in a mounting opening 2 the interior trim 3 is recorded. An opening on the back 91 in the housing 90 provides access to a necessary but not shown power supply.

Based on 2 is now a further embodiment of a loudspeaker unit 1 described. In contrast to the loudspeaker unit 1 of the previous figure, in this embodiment is the speaker unit 1 with a light emitting element 55b equipped, which as a light exit surface of a light guide 55 is trained. The light guide 55 can for example be designed as an elongated component. The use of a light guide enables light to be drawn one away from the loudspeaker unit 1 located light emitting diode 56 via a light coupling surface 55a and sent to the speaker unit.

In the 3 is the speaker unit 1 in a plan view of the interior 6 seen can be seen with the cover 100 has been removed.

The speaker unit 1 is circular in outline in the exemplary embodiment. Hence the component 60 , which as a carrier of identification 70 serves, preferably circular in outline. However, there are also other designs of the speaker unit 1 , for example. Conceivable with an oval or angular outline.

As mentioned earlier, the component is 60 with translucent, especially transparent areas 60a and with opaque, in particular opaque, areas 60b fitted. Through the areas 60b is also the indicator in the present case 70 educated.

In a departure from the exemplary embodiment, it is conceivable that the membrane 30th (see. 1 and 2 ) itself as a carrier for the license plate 70 serves. In this case, the separate component 60 omitted.

Based on 4th is a third embodiment of a loudspeaker unit according to the invention 1 described. In contrast to the 2 is the indicator in this embodiment 70 directly on the cover 100 or on the cover element 101 in a demarcated area 71 upset. When emitting light rays L. through the light emitting element 55b becomes the translucent membrane 30th in turn transilluminated so that the rays of light L. with the cone of light 80 in the area 71 on the cover element 101 can hit. This is how when the light emitting element is activated 55b the visibility of the license plate 70 on the area 71 reinforced or made possible in the first place. The application of the mark 70 is in one with regard to the sound emission behavior of the cover 100 or the cover element 101 done in a neutral manner. So can the license plate 70 for example on the cover element 101 be lasered. It is also conceivable that the license plate 70 on the cover element 101 to be printed, whereby the list is not to be regarded as exhaustive. The application of the mark 70 so takes place in such a way that the openings 102 of the cover element 101 can neither be significantly reduced nor covered.

Finally, in 5 a speaker unit 1 shown, in contrast to the execution according to 4th as a light emitting element 57 a projector unit, in particular a mini projector with only a few millimeters in external dimensions, is used.

The light emitting element 57 gives a cone of light 80 on a demarcated area 71 from, making the indicator 70 from the light emitting element 57 through the transparent membrane 30th on the cover element 101 is projected and thus made visible.

It is also conceivable that the light-emitting element 57 designed in the manner of a beamer and can be or is controlled via a control unit (not shown in detail) in such a way that moving texts, symbols or the like are also displayed in the area 71 are producible.

Finally in the 6 a motor vehicle K can be seen which is in the area of door openers 4th in the interior 6 with loudspeaker units according to the invention 1 is provided. On covers 100 the speaker units 1 license plates can be made visible in the manner already described without impairing the sound in the interior 6 of the motor vehicle K comes.

List of reference symbols

1

Speaker unit

2

Assembly opening

3

interior panelling

4th

Door opener

5

Longitudinal central axis

6th

inner space

10

Carrier part

20th

magnet

21a

Through hole

21b

conical expansion

22nd

Annular gap

30th

membrane

31

Bead

32

tubular extension

40

Kitchen sink

50

Light emitting element; light emitting diode

55

Light guide

55a

Light coupling surface

55b

Light emitting element; Light exit surface

56

light emitting diode

57

Light emitting element; Projector unit

60

separate component as license plate holder

60a

translucent areas

60b

opaque areas

70

Mark

71

demarcated area

80

Cone of light

90

casing

91

opening

100

cover

101

Cover element

102

openings

K

Motor vehicle

L.

Rays of light

S.

vibration

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 202006015232 U1 [0003]
• DE 202014102203 U1 [0004]

Claims (12)

Loudspeaker unit (1), with a carrier part (10) to which a magnet (20) is fastened, a membrane (30) also being movably held on the carrier part (10), to which a coil (40) is fastened, which is at least partially arranged in an annular gap (22) of the magnet (20), with a cover (100) for optically concealing the membrane (30) and the cover (100) also serving to make a mark (70) visible, thereby characterized in that at least one light-emitting element (50, 55b, 56) is arranged behind the cover (100) in such a way that when light rays (L) are emitted through the light-emitting element (50, 55b, 56) the identifier (70) in the light emission direction behind the Light-emitting element (50, 55b, 56) can be made visible on a delimited area (71) of the cover (100) or its visibility can be increased. Loudspeaker unit (1) Claim 1 , characterized in that the light-emitting element (50, 55b, 56) is arranged on a longitudinal center axis (5) of the loudspeaker unit (1). Loudspeaker unit (1) Claim 1 or 2 , characterized in that between the light-emitting element (50, 55b, 56) and the cover (100) at least one carrier element with the identifier (70) is arranged, which in the manner of a slide frame of emitted light rays (L) of the light-emitting element (50, 55b ) is translucent. Loudspeaker unit (1) Claim 3 , characterized in that the carrier element is formed by the membrane (30) itself. Loudspeaker unit (1) Claim 3 , characterized in that the carrier element is formed by a separate component (60). Loudspeaker unit (1) Claim 1 or 2 , characterized in that the light output element (56) is designed as a projector unit. Loudspeaker unit (1) Claim 6 , characterized in that the light-emitting element (56) is designed as a controllable beamer. Loudspeaker unit (1) after one of the Claims 1 to 5 , characterized in that the light-emitting element (55b) is designed as a light coupling-out surface of a light guide (55). Loudspeaker unit (1) after one of the Claims 1 to 3 , characterized in that the light-emitting element (50) is designed as a light-emitting diode, in particular as an RGB light-emitting diode. Loudspeaker unit (1) Claim 1 or 2 , characterized in that the identifier (70) is applied to the cover (100) itself in such a way that existing openings (102) in the cover (100) for sound passage are not reduced in size or covered. Loudspeaker unit (1) Claim 10 , characterized in that the identifier (70) is applied to the cover (100) by laser processing or by printing. Motor vehicle (K), characterized by at least one loudspeaker unit (1) according to one of the preceding claims.

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