Indicator lamp mechanism for physical sign monitor
By designing light guide components and limiting structures, the problem of uneven brightness caused by the overlapping of light from the LED beads was solved, achieving uniform light emission and stable indication in the vital signs monitor.
Patent Information
- Application Number
- CN202520414492.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing indicator light mechanisms suffer from uneven brightness of the ring due to overlapping light from the LED beads and reflections from internal components, making it difficult to provide a clear indication.
The light from the LED beads is concentrated and directed into the light guide area for uniform dispersion, and then reflected to the light transmission part through the light guide part. The combination of the buckle and limiting groove structure ensures the stable installation of the light guide and avoids the light beams from crossing, overlapping and shifting.
It achieves uniform light emission from the light-transmitting part, improves brightness and stability, enhances the indicative function, and avoids the risk of uneven light and damage.
Smart Images
Figure CN223782709U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of indicator light mechanisms, specifically an indicator light mechanism for a vital signs monitor. Background Technology
[0002] The vital signs monitor is a non-contact, wearable, and non-invasive respiratory and heart rate monitoring product. It can monitor a person's bedridden status, sleep status, respiratory rate, and heart rate. Its main function is to monitor the respiratory and heart rate in real time when a person is lying down or sleeping, and to provide feedback on respiratory waveforms, body movement index, respiratory rate, heart rate index, etc. The vital signs monitor is also equipped with an indicator light mechanism to display different forms of light to remind the user to connect to the network, or to display a red light alarm when a person's breathing or heartbeat is interrupted.
[0003] The existing indicator light mechanism includes several LEDs arranged in a ring on a circuit board. When these LEDs emit light, they can illuminate the outer periphery of the vital signs monitor housing to create a ring of light. However, due to the cross-over of light between the LEDs and the reflection of light from other components inside the vital signs monitor, the brightness of the ring of light generated on the outer periphery of the vital signs monitor housing after the LEDs emit light is uneven. This results in some areas of the ring of light being less bright and others being brighter, making it difficult to provide a conspicuous indication.
[0004] The research objective of this utility model is to design an indicator light mechanism for a vital signs monitor to address the problems existing in the prior art. Utility Model Content
[0005] To address the problems existing in the prior art, this utility model provides an indicator light mechanism for a vital signs monitor, which can effectively solve the problems existing in the prior art.
[0006] The technical solution of this utility model is:
[0007] An indicator light mechanism for a vital signs monitor, the vital signs monitor including a housing and a circuit board disposed within the housing, the housing having a light-transmitting portion on its side wall, the indicator light mechanism comprising:
[0008] Several LED beads are distributed in a ring at intervals on the circuit board and are controlled by the circuit board.
[0009] A light guide is installed within the housing and one side corresponds to several of the lamp beads. The outer wall of the light guide has an annular recess forming an opening side corresponding to the light-transmitting part of the light guide area. One side wall of the light guide area has a protruding light guide cover that abuts against the circuit board and covers the outer periphery of several of the lamp beads. The other side wall is a light guide part for guiding light toward the light-transmitting part. The inner side of the light guide cover has a light guide channel that communicates with the light guide area and corresponds to the light guide part.
[0010] Furthermore, one side wall of the light guide area is configured as a straight light-incident portion, and the other side wall is configured as a light guide portion that is arc-shaped and recessed away from the light-incident portion. The distance between the light guide portion and the light-incident portion gradually increases towards the light-transmitting portion, and the light guide channel is arranged perpendicular to the light-incident portion.
[0011] Furthermore, the light-incident portion extends toward the circuit board and is provided with a plurality of first latches, the plurality of first latches being circumferentially spaced and used to latch onto the side of the circuit board away from the light guide.
[0012] Furthermore, the housing includes a front shell and a rear shell. The front end of the outer wall of the rear shell is provided with a ring of light-transmitting parts. The circuit board is detachably disposed inside the rear shell and has a plurality of lamp beads on its front side. The inner wall of the front end of the rear shell is provided with a plurality of second buckles that extend inward and are circumferentially spaced. The front shell is provided with a third buckle that engages with the second buckles. The front and rear side walls of the light guide area are respectively the light guide part and the light incident part. The outer end of the light guide part is recessed and provided with a plurality of first limiting grooves that are correspondingly sleeved on the outer side of the plurality of second buckles.
[0013] Furthermore, the outer end of the light guide is recessed with several circumferentially spaced second limiting grooves, and the inner wall of the front shell is protruded with several limiting ribs that extend rearward and are inserted into several of the second limiting grooves. The rear ends of the several limiting ribs are located on the front side of the light-transmitting part.
[0014] Furthermore, the number of the first buckles is four and they are symmetrically located on the left and right sides of the light-incident part; the number of the first limiting grooves is six and they are symmetrically located on the upper and lower sides and the left and right sides of the light guide part, respectively; and the number of the second limiting grooves is four and they are symmetrically located on the left and right sides of the light guide part.
[0015] Furthermore, the light guide cover is fitted onto the outside of the lamp bead, and the circumferential gap of the lamp bead is located in the middle of the light guide channel, and the length of the light guide channel is greater than the height of the lamp bead.
[0016] Furthermore, the light guide is a ring-shaped white plastic component.
[0017] Therefore, the beneficial effects of this utility model are:
[0018] 1. By using a light guide cover to isolate the light from adjacent LED beads and prevent light beams from crossing or overlapping, and by guiding the light from several LED beads into the light guide area through a light guide channel for uniform dispersion, the light is then uniformly reflected by the light guide part to the light-transmitting part, ensuring uniform light emission from the light-transmitting part. Thus, the addition of the light guide component allows the light-transmitting part of the vital signs monitor housing to emit light uniformly for alerts and alarms, greatly improving the uniformity and brightness of the light emission from the light-transmitting part, enhancing the stability of its luminous alerts or alarms, and achieving a prominent indicative function.
[0019] 2. By setting the light guide part as an arc-shaped concave depression and forming a concave surface for concentrating reflected light to the light-transmitting part, a certain reflection angle is formed between the light-incident part and the concave surface, corresponding to the reflection path of the light-transmitting part. This improves the concentration of light that is dispersed into the light guide area through the light guide channel after being reflected by the concave surface. In this way, while improving the light emission uniformity of the light-transmitting part when the lamp bead emits light, the brightness of the light is increased, and the indicative function is enhanced.
[0020] 3. By adding several first buckles, the limiting connection between the light guide and the circuit board is realized, the axial limiting setting of the light guide is realized, the stability of several light guide covers against the circuit board is improved, and the stability of the concentrated light guiding of the light guide channel is improved.
[0021] 4. By using a series of first limiting grooves and second buckles to limit the circumferential setting of the light guide, the stability of the light guide installation is improved. This avoids the situation where the light guide shifts during transportation or use of the vital signs monitor, causing the light guide cover to collide with the lamp beads and be damaged, or the light guide cover to shift, causing uneven light in the light guide area after the light guide channel is guided. This improves the stability of the concentrated light guiding of the light guide channel.
[0022] 5. By interlocking and limiting the light guide with several second limiting slots and several limiting ribs, the circumferential limiting setting of the light guide is further realized, which further improves the stability of the light guide installation. The light guide is stably fixed and installed between the front shell and the rear shell, which further avoids the situation where the light guide shifts during transportation or use of the vital signs monitor, causing the light guide cover to collide with the lamp beads and be damaged, or the situation where the light guide cover shifts and the light guide area is uneven after the light guide channel is guided, which further improves the stability of the concentrated light guiding of the light guide channel. On this basis, by limiting the rear end of several limiting ribs to the front side of the light-transmitting part, the limiting ribs can avoid blocking the light refraction between the light guide part and the light-transmitting part, ensuring the stability of the concentrated refraction of light to the light-transmitting part.
[0023] 6. The number of first latches is four, symmetrically located on the left and right sides of the light-incident section; the number of first limiting slots is six, symmetrically located on the upper and lower sides and left and right sides of the light guide section; and the number of second limiting slots is four, symmetrically located on the left and right sides of the light guide section. This improves the uniformity of the distribution of the first latches, first limiting slots, and second limiting slots, allowing them to cooperate with the corresponding circuit boards, second latches, and limiting ribs to provide bidirectional axial and circumferential limiting for the light guide component. This stably confines the light guide component to the center between the front and rear shells, enabling the light guide area and light guide section to stably and uniformly diffuse and refract the light emitted by several LED beads. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the vital signs monitoring device.
[0025] Figure 2 This is a schematic diagram of the back cover and indicator light mechanism of the vital signs monitor.
[0026] Figure 3 for Figure 2 A cross-sectional structural diagram.
[0027] Figure 4 for Figure 3 A schematic diagram of the structure after removing the light guide.
[0028] Figure 5 This is a schematic diagram of the light guide component.
[0029] Figure 6 This is a schematic diagram of the front casing of the vital signs monitor. Detailed Implementation
[0030] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:
[0031] refer to Figure 1-6 An indicator light mechanism for a vital signs monitor:
[0032] The vital signs monitor includes a housing and several working elements disposed within the housing, and a circuit board 3 for driving the several working elements to work. The side wall of the housing is provided with a ring of light-transmitting parts 21. Specifically, the working elements can be millimeter-wave radar, etc. The specific structure of the elements is prior art and is not the main inventive point of this application, so it will not be described in detail here.
[0033] The indicator light mechanism includes:
[0034] A number of LED beads 4 are arranged in a ring at intervals on the circuit board 3 and are controlled by the circuit board 3. Specifically, the LED beads 4 are LED lights, and the circuit board 3 is a control circuit board 3. The circuit board 3 is used to control the LED beads 4 to flash, stay on, or display different colors of light, etc.
[0035] A light guide 5 is installed within the housing and one side corresponds to several of the LED beads 4. The outer wall of the light guide 5 has an annular recess forming an opening side corresponding to the light guide area 51 of the light-transmitting part 21. One side wall of the light guide area 51 has a protrusion with several light guide covers 52 that abut against the circuit board 3 and cover the outer periphery of several LED beads 4, and the other side wall is a light guide part 53 for guiding light toward the light-transmitting part 21. The inner side of the light guide cover 52 has a light guide channel 521 that connects to the light guide area 51 and corresponds to the light guide part 53. Specifically, the light guide channel 521 is used to guide the light from the LED beads 4 to the light guide area 51, and the light guide area 51 is used to uniformly diffuse the light introduced by the light guide channel 521. The light guide 5 is an annular white plastic part.
[0036] The aforementioned structure isolates the light from adjacent LED beads 4 through the light guide cover 52, preventing light rays from crossing and overlapping. The light from several LED beads 4 is concentrated and guided into the light guide area 51 through the light guide channel 521 for uniform dispersion, and then uniformly reflected by the light guide part 53 to the light-transmitting part 21, ensuring uniform light emission from the light-transmitting part 21. Thus, the addition of the light guide 5 allows the light-transmitting part 21 of the vital signs monitor housing to emit light uniformly for alerts and alarms, significantly improving the uniformity and brightness of the light emission from the light-transmitting part 21, enhancing the stability of its luminous alert or alarm function, and achieving a prominent indicative effect.
[0037] To improve the luminous brightness of the light-transmitting part 21, one side wall of the light-guiding area 51 is configured as a straight light-incident part 54, and the other side wall is configured as a light-guiding part 53 that is arc-shaped and recessed away from the light-incident part 54. The distance between the light-guiding part 53 and the light-incident part 54 gradually increases towards the light-transmitting part 21. The light-guiding channel 521 is perpendicular to the light-incident part 54. By configuring the light-guiding part 53 as an arc-shaped recess and forming a concave surface for concentrating reflected light to the light-transmitting part 21, a certain reflection angle is formed between the light-incident part 54 and the concave surface corresponding to the reflection path of the light-transmitting part 21. This improves the concentration of light diffused into the light-guiding area 51 through the light-guiding channel 521 after reflection by the concave surface. Consequently, while improving the luminous uniformity of the light-transmitting part 21 when the lamp bead 4 is emitting light, it also increases its luminous brightness and enhances its indicative function.
[0038] To limit the position of the light guide 5, the light-incident portion 54 extends toward the circuit board 3 and is provided with a plurality of first latches 541. These first latches 541 are circumferentially spaced and used to latch onto the side of the circuit board 3 away from the light guide 5. Thus, the addition of these first latches 541 achieves a limiting connection between the light guide 5 and the circuit board 3, realizing axial limiting of the light guide 5, improving the stability of the plurality of light guide covers 52 against the circuit board 3, and further improving the stability of the concentrated light guiding in the light guide channel 521.
[0039] To further limit the position of the light guide 5, the housing includes a front shell 1 and a rear shell 2. The front end of the outer wall of the rear shell 2 is provided with a ring of light-transmitting parts 21. The circuit board 3 is detachably disposed in the rear shell 2 and has a number of lamp beads 4 on its front side. The inner wall of the front end of the rear shell 2 is provided with a number of second buckles 22 that extend inward and are circumferentially spaced. The front shell 1 is provided with a third buckle 11 that is corresponding to and engages with the second buckles 22. The front and rear side walls of the light guide area 51 are the light guide part 53 and the light-incident part 54, respectively. The outer end of the light guide part 53 is recessed with a number of first limiting grooves 531 that are correspondingly sleeved on the outer side of the number of second buckles 22. Thus, by limiting the light guide 5 through the limiting sleeve between several first limiting grooves 531 and second buckles 22, the circumferential limiting setting of the light guide 5 is realized, which improves the stability of the installation of the light guide 5 and avoids the situation where the light guide 5 shifts during transportation or use of the vital signs monitor, causing the light guide cover 52 to collide with the lamp bead 4 and be damaged, or the light guide cover 52 shifts, causing the light to be uneven in the light guide area 51 after the light guide channel 521 guides the light, thereby improving the stability of the concentrated light guiding of the light guide channel 521.
[0040] In order to further limit the position of the light guide 5, the outer end of the light guide 53 is recessed with a plurality of second limiting grooves 532 distributed circumferentially, and the inner wall of the front shell 1 is protruded with a plurality of limiting ribs 12 extending rearward and inserted into the plurality of second limiting grooves 532, and the rear ends of the plurality of limiting ribs 12 are located in front of the light-transmitting part 21. By using the insertion and limiting between several second limiting grooves 532 and several limiting ribs 12, the circumferential limiting setting of the light guide 5 is further realized, which further improves the stability of the installation of the light guide 5. The light guide 5 is stably limited and installed between the front shell 1 and the rear shell 2, which further avoids the situation where the light guide 5 shifts during transportation or use of the vital signs monitor, causing the light guide cover 52 to collide with the lamp bead 4 and be damaged, or the light guide cover 52 shifts, causing the light to be uneven in the light guide area 51 after the light guide channel 521 guides the light. This further improves the stability of the concentrated light guiding of the light guide channel 521. On this basis, by limiting the rear end of several limiting ribs 12 to the front side of the light-transmitting part 21, the limiting ribs 12 can be prevented from blocking the light refraction between the light guide part 53 and the light-transmitting part 21, ensuring the stability of the concentrated refraction of light to the light-transmitting part 21.
[0041] Specifically, there are four first buckles 541 symmetrically located on the left and right sides of the light-incident portion 54, six first limiting grooves 531 symmetrically located on the upper and lower sides and left and right sides of the light guide portion 53, and four second limiting grooves 532 symmetrically located on the left and right sides of the light guide portion 53. This improves the uniformity of the distribution of the first buckles 541, the first limiting grooves 531, and the second limiting grooves 532, so that after they cooperate with the corresponding circuit board 3, the second buckle 22, and the limiting rib 12, they can provide bidirectional axial and circumferential limiting for the light guide component 5, stably confining the light guide component 5 centrally between the front shell 1 and the rear shell 2, so that the light guide area 51 and the light guide portion 53 can stably and uniformly diffuse and refract the light emitted by the several lamp beads 4.
[0042] To improve the concentrated light guiding effect of the light guide channel 521, the light guide cover 52 is adapted to cover the outside of the lamp bead 4, and the circumferential gap of the lamp bead 4 is located in the middle of the light guide channel 521. The length of the light guide channel 521 is greater than the height of the lamp bead 4. Thus, through the limiting cooperation of the first buckle 541, the first limiting groove 531, and the second limiting groove 532 with the corresponding circuit board 3, the second buckle 22, and the limiting ridge 12, respectively, during the transportation and use of the vital signs monitor, the light guide cover 52 can be stably covered on the outer periphery of the lamp bead 4, while the lamp bead 4 is stably positioned in the middle of the light guide channel 521, and the length of the light guide channel 521 is extended. This allows the light guide channel 521 to stably and fully concentrate the light from the lamp bead 4 before guiding it forward into the light guide area 51, improving the concentrated light guiding stability and effect of the light guide channel 521.
[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An indicator light mechanism for a vital signs monitor, characterized in that, The vital signs monitor includes a housing and a circuit board (3) disposed within the housing. A light-transmitting portion (21) is provided on the side wall of the housing. The indicator light mechanism includes: Several LED beads (4) are distributed in a ring at intervals on the circuit board (3) and controlled by the circuit board (3); A light guide (5) is installed in the housing and one side corresponds to a plurality of lamp beads (4). The outer wall of the light guide (5) is recessed in an annular shape to form a light guide area (51) with the opening side corresponding to the light-transmitting part (21). One side wall of the light guide area (51) is provided with a plurality of light guide covers (52) that abut against the circuit board (3) and cover the outer periphery of the plurality of lamp beads (4). The other side wall is provided with a light guide part (53) for guiding light toward the light-transmitting part (21). The inner side of the light guide cover (52) is provided with a light guide channel (521) that communicates with the light guide area (51) and corresponds to the light guide part (53).
2. The indicator light mechanism for a vital signs monitor as described in claim 1, characterized in that, One side wall of the light guide area (51) is a straight light-incident part (54), and the other side wall is a light guide part (53) that is arc-shaped and recessed away from the light-incident part (54). The distance between the light guide part (53) and the light-incident part (54) gradually increases towards the light-transmitting part (21). The light guide channel (521) is perpendicular to the light-incident part (54).
3. The indicator light mechanism for a vital signs monitor as described in claim 2, characterized in that, The light-inlet portion (54) extends toward the circuit board (3) and is provided with a plurality of first buckles (541). The plurality of first buckles (541) are circumferentially spaced and are used to fasten to the side of the circuit board (3) away from the light guide (5).
4. The indicator light mechanism for a vital signs monitor as described in claim 3, characterized in that, The housing includes a front shell (1) and a rear shell (2). The front end of the outer wall of the rear shell (2) is provided with a ring of light-transmitting parts (21). The circuit board (3) is detachably disposed in the rear shell (2) and has a number of lamp beads (4) on its front side. The inner wall of the front end of the rear shell (2) is provided with a number of second buckles (22) that extend inward and are circumferentially spaced. The front shell (1) is provided with a third buckle (11) that is corresponding to and engages with the second buckles (22). The front and rear side walls of the light guide area (51) are the light guide part (53) and the light entrance part (54) respectively. The outer end of the light guide part (53) is recessed and provided with a number of first limiting grooves (531) that are correspondingly sleeved on the outer side of the number of second buckles (22).
5. The indicator light mechanism for a vital signs monitor as described in claim 4, characterized in that, The light guide (53) has a recessed second limiting groove (532) with a plurality of circumferentially spaced grooves at its outer end. The inner wall of the front shell (1) has a protrusion with a plurality of limiting ribs (12) that extend rearward and are inserted into the plurality of second limiting grooves (532). The rear ends of the plurality of limiting ribs (12) are located in front of the light-transmitting part (21).
6. The indicator light mechanism for a vital signs monitor as described in claim 5, characterized in that, The number of the first buckles (541) is four and they are symmetrically located on the left and right sides of the light-inlet portion (54). The number of the first limiting grooves (531) is six and they are symmetrically located on the upper and lower sides and the left and right sides of the light guide portion (53). The number of the second limiting grooves (532) is four and they are symmetrically located on the left and right sides of the light guide portion (53).
7. The indicator light mechanism for a vital signs monitor as described in claim 1, characterized in that, The light guide cover (52) is adapted to cover the outside of the lamp bead (4), and the circumferential gap of the lamp bead (4) is located in the middle of the light guide channel (521). The length of the light guide channel (521) is greater than the height of the lamp bead (4).
8. The indicator light mechanism for a vital signs monitor as described in claim 1, characterized in that, The light guide (5) is a ring-shaped white plastic part.