The invention relates to a personal electrical appliance.
of the personal
Demand, for example, to electric toothbrushes or
to electric hair removal devices, in particular electrical
Shavers or electric epilators. In an electrical
is a brushhead
attached to a housing part
and is driven by means of an electric motor, which is arranged in the housing
is. An electric shaver usually has a housing and
one or more electrically driven shear systems, with their
Help cut the hair and thereby remove it. An electric epilator serves
to, the hair as possible
including removing their roots. For this purpose, the epilation device grasps the hair
by means of at least one clamping device and plucks it by a
Movement of the clamping device relative to the skin.
In order to achieve a flat hair removal with a hair removal device, the hair removal device is guided over a desired skin area. The handling of the hair removal device can be made difficult by poor lighting conditions or shading effects. In this connection, it is already known to equip a razor with a lighting device. For example, it has been proposed to integrate a lamp in the shaving head of the shaver or to arrange in the vicinity of the shaving head. However, there has hitherto been the problem that in the region of the shaving head, the space is very limited and therefore there was no lamp could be arranged, which has sufficient performance. One solution to this problem is from the DE-OS 21 17 663
known. There, a shaver with a lighting device for illuminating the skin surface to be shaved is disclosed. The lighting device consists of a fixed or displaceable on or in the device housing electrical light source and at least one body of transparent material. One end of the body is facing the light source and the other is arranged on or in the shaving head. The body is designed as a light-conducting spatial structure whose length dimension exceeds its cross-section by a multiple.
of the personal
Need that over
Have light sources,
The power supply to the light sources is usually via solder joints
made to over
a long-term reliable electrical contact
is to ensure. All recently, in particular, the assembly
one on the housing
arranged light source relatively expensive.
Invention is based on the object, an electrical appliance of the personal
Requirements with one possible
to provide little effort with a lighting device.
Task is solved by the combination of features of claim 1.
Electrical appliance according to the invention of the personal
Need has a durable case in the hand, arranged on the housing
Switch, in particular for switching on and off the electrical appliance and a
Light source on. The peculiarity of the electrical appliance according to the invention exists
in that the
Light source by means of a holder and / or by means of a lens such
mechanically clamped is that they
contacted by touching at least one contact element and on the
Contact element can be supplied with power.
Invention has the advantage that the
Light source with very little effort is mountable. Another
The advantage is that the
Light source takes up little space and does not interfere
the handling of the electrical appliance
Light source may be clamped between the holder and the lens.
In particular, the light source is counteracted by the contact element
pressed the lens.
As a result, the light source is permanently mechanically fixed and also
a reliable galvanic
Formed connection between the light source and the contact element.
The lens preferably has a recess for receiving the light source
on. This favors
on the one hand, an effective mechanical fixation of the light source and reduced
on the other, the height.
For easy installation
and to ensure a tight fit
the lens is preferably fixed in a form-fitting manner. Good optical
and mechanical properties can be achieved when the lens
made of Plexiglas.
In a preferred embodiment of the invention, the light source is arranged in the region of the switch and in particular a component of the switch. This reduces the additional expense for the light source. It is particularly advantageous if the power supply of the light source via the switch. A very compact design can be achieved in that the light source is designed as an SMD component. In particular, the light source is designed as a light emitting diode. There By a high light output can be achieved with a low power consumption.
According to a first variant of the invention, the light source illuminates
Workspace off. This facilitates the handling of the electrical appliance according to the invention. Especially
the illuminated work area indicates a preferred direction
Operation of the electrical appliance,
so that the danger
a faulty operation is reduced. In a second variant of the
Invention, the light source is designed as a signaling device.
It is advantageous if the contact element yields elastically
is trained. In this case, without additional aids a safe
and gentle mechanical fixation and at the same time a reliable electrical
Contacting the light source can be achieved. Furthermore, that can
Contact element flat piece
be educated. In particular, the contact element extends
from the light source to a circuit arrangement which is at least
a contact surface
having. In the area of the circuit arrangement can on the contact element
least a sliding contact be formed. With the sliding contact
in a simple way a galvanic connection to the contact surface of the circuit arrangement
can through the big one
the contact element, the heat dissipation
which improves the operation of a high current LED, i.
Light output, allows.
The contact element can be movable, in particular displaceable.
Preferably, the contact element is movable to a position in which it
at the contact surface
is applied. This can be done
in addition to the contact element
realize a switching function. In the preferred embodiment
the invention, the contact element is a part of the switch.
Invention will be described below with reference to the drawing
Embodiment of a
and further advantageous refinements and developments explained in more detail.
1 An embodiment of an inventively embodied epilator in front view,
2 the epilation device off 1 in section,
3 the switch in an enlarged sectional view,
4 a top view of the epilation head of the epilation device 1 .
5 some components of the epilation device 1 in perspective,
6 some components of the epilation device 1 in a further perspective view and
7 a circuit diagram for an embodiment of the electronic circuit including the components connected thereto.
1 shows an embodiment of an inventively designed epilation device 1 in front view. The epilation device 1 has a housing 2 and a detachable on the case 2 attached epilation head 3 on. The housing 2 is shaped so that it can be comfortably held in the hand. At the housing 2 is a switch 4 for switching the epilation device on and off 1 arranged. In the switch 4 is a light emitting diode 5 with an attached lens 6 integrated. A light-emitting diode is preferred 5 used, which emits white light. In the epilation head 3 is a rotary cylinder 7 rotatably suspended, the several clamping devices 8th for plucking hair has.
2 shows the epilation device 1 out 1 in section. An enlarged sectional view of the switch 4 shows 3 , The section is always along the in 1 marked line AA. To illustrate the conditions during epilation is in 2 a skin surface 9 drawn over the the epilator 1 to be led. The epilation device 1 indicates in addition to the in 1 components shown in particular a connector 10 for power, an electronic circuit 11 and an electric motor 12 for driving the rotary cylinder 7 on. The desk 4 is designed as a slide switch and by means of an actuating element 13 parallel to the longitudinal axis of the epilator 1 displaceable. The actuator 13 has three side-by-side recesses 14 on. Through the depressions 14 and a locking element 15 , optionally in one of the three wells 14 engages and thereby the switch 4 locked, three switching positions are defined. These switching positions correspond to an off state or a first or second operating state of the epilation device 1 , In 2 is shown a switching position, which is the off state of the epilator 1 equivalent.
As in particular from 3 shows, is the LED 5 designed as an SMD component and a holder 16 arranged. SMD stands for Surface Mounting Device and refers to electronic components, which are usually very compact are formed and can be soldered onto the track side of a circuit board. The holder 16 is on a carrier plate 17 attached. The light emitting side of the light emitting diode 5 is from the lens 6 covered, a recess 18 for partially receiving the light-emitting diode 5 having. The Lens 6 is by means of projections 19 and 20 positively fixed, so that the light emitting diode 5 between the lens 6 and the holder 16 is trapped. On its opposite to the light-emitting side back is the light emitting diode 5 partially formed electrically conductive and is there on each an angled section 21 respectively. 22 two contact sheets 23 and 24 on, so that galvanic connections between the light emitting diode 5 and the contact sheets 23 and 24 be formed.
The contact sheets 23 and 24 supply the LED 5 with electricity and extend for this purpose of the light emitting diode 5 to the electronic circuit 11 , The contact plates run 23 and 24 partially at the from the actuator 13 abgewanden side of the carrier plate 17 , The angled sections 21 and 22 the contact sheets 23 and 24 are elastically yielding and are illuminated by the light emitting diode 5 that focus on the lens 6 supports, in the 3 illustrated manner elastically deformed. By the elastic deformation, a restoring force is generated which the angled portions 21 and 22 the contact sheets 23 and 24 against the light emitting diode 5 and thus the LED 5 against the lens 6 presses. In this way, without a soldering a reliable galvanic connection between the light emitting diode 5 and the contact sheets 23 and 24 trained and the light emitting diode 5 mechanically fixed. For mounting is the light emitting diode 5 only on the holder 16 hang up and then by placing the lens 6 against the angled sections 21 and 22 the contact sheets 23 and 24 to press and thereby the positive fixation of the lens 6 train. This allows a quick and easy installation of the LED 5 ,
When switched on, the LED lights up 5 an area 25 from whose perpendicular to the plane extending boundary surfaces form an angle α with each other. The illuminated area 25 is with respect to the intended direction of movement of the epilation device represented by an arrow 1 in front of the epilation device 1 and in fact is not as sharply delimited as in the representation of 2 played. The geometry and intensity distribution of the illuminated area 25 depend significantly on the training of the lens 6 from. The Lens 6 is thus shaped so that the desired shape of the illuminated area 25 results. As material for the lens 6 Plexiglass is preferably used. But it can also be a lens 6 from a different material, such as polycarbonate, are used.
4 shows a view of the epilation head 3 of the epilation device 1 out 1 , It is the of the light emitting diode 5 illuminated area 25 schematically in the plane of the skin surface 9 shown. On the skin surface 9 has the illuminated area 25 a substantially rectangular shape.
To perform the epilation becomes the epilation device 1 by moving the actuating element 13 of the switch 4 put into operation and on the skin surface 9 placed. The commissioning leads on the one hand to the fact that the rotary cylinder 7 from the electric motor 12 is driven and performs a rotational movement. On the other hand, the light emitting diode 5 energized and lights the skin surface 9 out. This allows the user to control the epilation result even in low light conditions. During the epilation process, the epilation device becomes 1 in the direction of the illuminated area 25 over the skin surface 9 guided. In view of the rotational movement of the rotary cylinder 7 It does not matter in which direction the epilation device 1 over the skin surface 9 to be led. The light-emitting diode 5 thus facilitates the user with proper handling of the epilator 1 , The removal of the hair takes place in that the hair from the clamping devices 8th detected and by the movement of the clamping devices 8th which results from the rotational movement of the rotary cylinder 7 results, plucked.
The invention allows for extremely compactness an unexpectedly high optical efficiency. In particular, when using an SMD LED, which is operated with excessive current - which is feasible due to the above-described cooling by the contact elements - can ensure a very strong luminosity. The SMD LED allows a precisely defined highly effective light coupling and the adjacent optics even at extremely low distance between the LED and the coupling surface of the optics. This in turn leads to a particularly uniform illumination without shadows and other light intensity jumps. This also allows a defined drop in light intensity at the boundaries of the illumination area 25 achieve how it is in 4 is shown schematically.
Here, I illustrates the intensity distribution along the direction of the arrow and Iy the intensity distribution transverse to the direction of the arrow. Due to the continuous drop in light intensity to the limit of the illuminated area 25 towards a dazzling of the user is prevented and allows a very effective intensive lighting. Be Brightness contrast jumps would lead namely to a glare and poorer perceptibility.
5 and 6 each show some components of the epilator 1 out 1 in perspective view. The 5 and 6 differ in the perspective chosen and in that in 5 compared to 6 in addition the lens 6 and the carrier plate 17 are shown. In the field of electronic circuit 11 is on the contact plate 23 a sliding contact 26 educated. At the contact sheet 24 There are two galvanically connected sliding contacts 27 and 28 educated. The electronic circuit 11 points in the movement range of the sliding contact 26 a contact surface 29 on. In the movement area of the sliding contact 27 is a contact surface 30 arranged and in the range of movement of the sliding contact 28 are two contact surfaces 31 and 32 arranged. The contact sheets 23 and 24 be with the help of the actuator 13 parallel to the longitudinal axis of the epilator 1 shifted so that it depends on the switching position of the switch 4 depends on whether there is any contact between the sliding contacts 26 . 27 . 28 and the contact surfaces 29 . 30 . 31 . 32 comes. For details, see 7 explained.
In the 5 and 6 continue to be motor contacts 33 and 34 represented by the electric motor 12 to the electronic circuit 11 extend. The motor contacts 33 and 34 lie in contact with their contact areas in their end areas 35 and 36 the electronic circuit 11 on, but do not have a switching function, with the touch of the contact surfaces 35 and 36 optionally can be canceled or trained.
7 shows a circuit diagram for an embodiment of the electronic circuit 11 including the components connected to it. The electronic circuit 11 is via the socket 10 powered by a negative terminal 37 and a positive connection 38 having. The negative connection 37 the connection socket 10 is with the contact surface 36 and about a resistance 39 with the contact surface 29 connected. The positive connection 38 the connection socket 10 is with the contact surface 30 connected. The contact surface 35 is with the contact surface 32 and via a series connection of a first diode 40 and a second diode 41 with the contact surface 31 connected. External is to the contact surface 35 the motor contact 33 and to the contact surface 36 the motor contact 34 connected. Depending on the switching position of the switch 4 can the contact surface 29 from the sliding contact 26 be contacted touching. The contact surface 30 becomes permanently from the sliding contact 27 touchingly contacted. The contact surfaces 31 and 32 can alternatively from the sliding contact 28 be contacted touching.
In a first switching position of the switch 4 in which the epilation device 1 is switched off, there is only the sliding contact 27 touching at the contact surface 30 at. This first switching position, in which neither the electric motor 12 still the light-emitting diode 5 to be powered is in 6 shown.
In a second switching position of the switch 4 is the sliding contact 26 touching at the contact surface 29 , the sliding contact 27 at the contact surface 30 and the sliding contact 28 at the contact surface 31 at. This means that the electric motor 12 over the two upstream diodes 40 and 41 is powered and thus operated at reduced power. The circuit between the contact surfaces 30 and 31 over the two sliding contacts 27 and 28 closed, both at the contact plate 24 formed and thus galvanically connected to each other. Furthermore, in the second switching position of the switch 4 the LED 5 over the upstream resistor 39 powered.
In a third switching position of the switch 4 is the sliding contact 26 touching at the contact surface 29 , the sliding contact 27 at the contact surface 30 and the sliding contact 28 at the contact surface 32 at. This will cause the electric motor 12 directly, ie without the upstream diodes 40 and 41 , powered and operated at full power. The circuit is thereby according to the second switching position on the two sliding contacts 27 and 28 of the contact sheet 24 closed.
The invention does not only relate to epilators 1 but also to other hair removal devices such as razors and other personal electrical appliances such as electric toothbrushes.
In the embodiment described above, the light emitting diode is used 5 the illumination of the work area. Likewise, it is also possible, the invention in connection with a light emitting diode 5 or any other light source that serves as an optical signal source. This application is particularly important in electric toothbrushes of relevance, but can also be used in other electrical appliances of personal need, for example for charging lights, timer functions, etc. As optical signal sources are preferably light-emitting diodes 5 used to emit colored light.